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Becker AM, Yu K, Stadler LB, Smith AL. Co-management of domestic wastewater and food waste: A life cycle comparison of alternative food waste diversion strategies. BIORESOURCE TECHNOLOGY 2017; 223:131-140. [PMID: 27788426 DOI: 10.1016/j.biortech.2016.10.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/06/2016] [Accepted: 10/09/2016] [Indexed: 06/06/2023]
Abstract
Food waste is increasingly viewed as a resource that should be diverted from landfills. This study used life cycle assessment to compare co-management of food waste and domestic wastewater using anaerobic membrane bioreactor (AnMBR) against conventional activated sludge (CAS) and high rate activated sludge (HRAS) with three disposal options for food waste: landfilling (LF), anaerobic digestion (AD), and composting (CP). Based on the net energy balance (NEB), AnMBR and HRAS/AD were the most attractive scenarios due to cogeneration of produced biogas. However, cogeneration negatively impacted carcinogenics, non-carcinogenics, and ozone depletion, illustrating unavoidable tradeoffs between energy recovery from biogas and environmental impacts. Fugitive emissions of methane severely increased global warming impacts of all scenarios except HRAS/AD with AnMBR particularly affected by effluent dissolved methane emissions. AnMBR was also most sensitive to food waste diversion participation, with 40% diversion necessary to achieve a positive NEB at the current state of development.
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Affiliation(s)
- Adilson M Becker
- Department of Civil and Environmental Engineering, University of Southern California, 3620 S Vermont Avenue, Los Angeles, CA 90089, United States
| | - Kevin Yu
- Department of Civil and Environmental Engineering, University of Southern California, 3620 S Vermont Avenue, Los Angeles, CA 90089, United States
| | - Lauren B Stadler
- Department of Civil and Environmental Engineering, Rice University, 6100 Main Street, Houston, TX 77005, United States
| | - Adam L Smith
- Department of Civil and Environmental Engineering, University of Southern California, 3620 S Vermont Avenue, Los Angeles, CA 90089, United States.
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52
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Xia T, Gao X, Wang C, Xu X, Zhu L. An enhanced anaerobic membrane bioreactor treating bamboo industry wastewater by bamboo charcoal addition: Performance and microbial community analysis. BIORESOURCE TECHNOLOGY 2016; 220:26-33. [PMID: 27552720 DOI: 10.1016/j.biortech.2016.08.057] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/11/2016] [Accepted: 08/13/2016] [Indexed: 06/06/2023]
Abstract
In this study, two anaerobic membrane bioreactors (AnMBRs) were operated for 150days to treat bamboo industry wastewater (BIWW), and one of them was enhanced with bamboo charcoal (B-AnMBR). During the steady period, average chemical oxygen demand (COD) removal efficiencies of 94.5±2.9% and 89.1±3.1% were achieved in B-AnMBR and AnMBR, respectively. The addition of bamboo charcoal (BC) increased the amount of biomass and improved the performance of the systems. A higher biogas production and methane yield were also observed in B-AnMBR. Regarding the issue of membrane fouling, BC lowered the soluble microbial product (SMP) content by approximately 62.73mg/L and decreased the membrane resistance, thereby mitigating membrane fouling. Analysis of the microbial communities demonstrated that BC increased the microbial diversity and promoted the activity of Methanosaeta, Methanospirillum, and Methanobacterium, which are dominant in methane production.
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Affiliation(s)
- Tian Xia
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Xinyi Gao
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Caiqin Wang
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
| | - Xiangyang Xu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China
| | - Liang Zhu
- Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China; Zhejiang Province Key Laboratory for Water Pollution Control and Environmental Safety, Hangzhou 310058, China.
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53
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Crone BC, Garland JL, Sorial GA, Vane LM. Significance of dissolved methane in effluents of anaerobically treated low strength wastewater and potential for recovery as an energy product: A review. WATER RESEARCH 2016; 104:520-531. [PMID: 27595700 DOI: 10.1016/j.watres.2016.08.019] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 08/08/2016] [Accepted: 08/09/2016] [Indexed: 06/06/2023]
Abstract
The need for energy efficient Domestic Wastewater (DWW) treatment is increasing annually with population growth and expanding global energy demand. Anaerobic treatment of low strength DWW produces methane which can be used to as an energy product. Temperature sensitivity, low removal efficiencies (Chemical Oxygen Demand (COD), Suspended Solids (SS), and Nutrients), alkalinity demand, and potential greenhouse gas (GHG) emissions have limited its application to warmer climates. Although well designed anaerobic Membrane Bioreactors (AnMBRs) are able to effectively treat DWW at psychrophilic temperatures (10-30 °C), lower temperatures increase methane solubility leading to increased energy losses in the form of dissolved methane in the effluent. Estimates of dissolved methane losses are typically based on concentrations calculated using Henry's Law but advection limitations can lead to supersaturation of methane between 1.34 and 6.9 times equilibrium concentrations and 11-100% of generated methane being lost in the effluent. In well mixed systems such as AnMBRs which use biogas sparging to control membrane fouling, actual concentrations approach equilibrium values. Non-porous membranes have been used to recover up to 92.6% of dissolved methane and well suited for degassing effluents of Upflow Anaerobic Sludge Blanket (UASB) reactors which have considerable solids and organic contents and can cause pore wetting and clogging in microporous membrane modules. Microporous membranes can recover up to 98.9% of dissolved methane in AnMBR effluents which have low COD and SS concentrations. Sequential Down-flow Hanging Sponge (DHS) reactors have been used to recover between 57 and 88% of dissolved methane from Upflow Anaerobic Sludge Blanket (UASB) reactor effluent at concentrations of greater than 30% and oxidize the rest for a 99% removal of total dissolved methane. They can also remove 90% of suspended solids and COD in UASB effluents and produce a high quality effluent. In situ degassing can increase process stability, COD removal, biomass retention, and headspace methane concentrations. A model for estimating energy consumption associated with membrane-based dissolved methane recovery predicts that recovered dissolved and headspace methane may provide all the energy required for operation of an anaerobic system treating DWW at psychrophilic temperatures.
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Affiliation(s)
- Brian C Crone
- National Exposure Research Laboratory, Office of Research and Development, United States Environmental Protection Laboratory, 26 West Martin Luther King Drive, Cincinnati, OH, 45268, USA; Department of Biomedical Chemical, and Environmental Engineering, University of Cincinnati, P.O. Box 210012, Cincinnati, OH, USA.
| | - Jay L Garland
- National Exposure Research Laboratory, Office of Research and Development, United States Environmental Protection Laboratory, 26 West Martin Luther King Drive, Cincinnati, OH, 45268, USA.
| | - George A Sorial
- Department of Biomedical Chemical, and Environmental Engineering, University of Cincinnati, P.O. Box 210012, Cincinnati, OH, USA.
| | - Leland M Vane
- National Risk Management Research Laboratory, Office of Research and Development, United States Environmental Protection Agency Laboratory, 26 West Martin Luther King Drive, Cincinnati, OH, 45268, USA.
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54
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Ortiz-Alvarez R, Casamayor EO. High occurrence of Pacearchaeota and Woesearchaeota (Archaea superphylum DPANN) in the surface waters of oligotrophic high-altitude lakes. ENVIRONMENTAL MICROBIOLOGY REPORTS 2016; 8:210-7. [PMID: 26711582 DOI: 10.1111/1758-2229.12370] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 12/16/2015] [Indexed: 05/12/2023]
Abstract
We carried out a regional survey on the archaea composition from surface waters of > 300 high-altitude Pyrenean lakes (average altitude 2300 m, pH range 4.4-10.1) by 16S rRNA gene tag sequencing. Relative Archaea abundances ranged between 0% and 6.3% of total prokaryotes amplicons in the polymerase chain reaction (PCR) mixture, and we detected 769 operational taxonomic units (OTUs; grouped at 97% identity) that split into 13 different lineages, with altitude and pH having a significant effect on the community composition. Woesearchaeota and Pacearchaeota (formerly Euryarchaeota DHVEG-6 cluster) dominated the data set (83% of total OTUS), showed a high occurrence (presence in c. 75% of the lakes) and had relative abundances significantly and positively correlated with the phylogenetic diversity of bacterial communities. Micrarchaeota-Diapherotrites (formerly Euryarchaeota MEG cluster), Methanomicrobia, Thermoplasmata and ammonia-oxidizing thaumarchaeota (AOA) showed relative abundances between 1% and 3% and occurrences between 14% and 26%. Minor lineages were SM1K20, Aenigmarchaeota (formerly Euryarchaeota DSEG cluster), Methanobacteria, Bathyarchaeota and SCG. Environmental preferences substantially differed among lineages, with Aenigmarchaeota and Methanomicrobia having the largest habitat breadth, and Thermoplasmata, AOA and Micrarchaeota having the smallest. Pacearchaeota and Woesearchaeota had been mostly reported from saline habitats and sediments, but surface waters of oligotrophic alpine lakes are suitable environments for such ecologically spread and genetically diverse archaeal lineages.
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Affiliation(s)
- Rudiger Ortiz-Alvarez
- Integrative Freshwater Ecology Group-Limnological Observatory of the Pyrenees, Centre for Advanced Studies of Blanes (CEAB), Spanish Research Council (CSIC), Blanes, Catalonia, 17300, Spain
| | - Emilio O Casamayor
- Integrative Freshwater Ecology Group-Limnological Observatory of the Pyrenees, Centre for Advanced Studies of Blanes (CEAB), Spanish Research Council (CSIC), Blanes, Catalonia, 17300, Spain
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55
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Guo J, Fu X, Andrés Baquero G, Sobhani R, Nolasco DA, Rosso D. Trade-off between carbon emission and effluent quality of activated sludge processes under seasonal variations of wastewater temperature and mean cell retention time. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 547:331-344. [PMID: 26789371 DOI: 10.1016/j.scitotenv.2015.12.102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 12/07/2015] [Accepted: 12/21/2015] [Indexed: 06/05/2023]
Abstract
Over the seasonal cycles, the mean cell retention time (MCRT) of the activated sludge process is varied to compensate the wastewater temperature variations. The effects of these variations on the carbon footprint (CFP) and effluent quality index (EQI) of a conventional activated sludge (CAS) process and a nitrification/denitrification (NDN) process were quantified. The carbon emission included both biogenic and non-biogenic carbon. Carbon emissions of wasted biosolids management were also addressed. Our results confirmed that the effluent quality indicated by EQI was not necessarily improved by increasing MCRT. Higher MCRT increased the carbon emission and reduced excess sludge production, which decreased the potential for biogas energy recovery. The NDN process was preferable to the CAS process from the perspective of effluent quality. This consideration extended to the whole plant CFP if the N2O emitted during NDN was limited ([N2O]<1% [NH4(+)]removed) as the carbon emission per unit effluent quality achieved by NDN process is less than that of the CAS process. By putting forward carbon emission intensity (γ) derived from CFP and EQI, our work provides a quantitative tool for decision makers evaluating process alternatives when there is a trade-off between carbon emission and effluent quality.
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Affiliation(s)
- Jingbo Guo
- School of Civil and Architecture Engineering, Northeast Dianli University, Jilin 132012, PR China.
| | - Xin Fu
- School of Civil and Architecture Engineering, Northeast Dianli University, Jilin 132012, PR China
| | - G Andrés Baquero
- Ciencia e Ingeniería del Agua y el Ambiente, Pontificia Universidad Javeriana, Carrera 7 No. 40-62, Bogotá D.C., Colombia
| | - Reza Sobhani
- Water-Energy Nexus Center, University of California, Irvine, CA 92697-2175, USA
| | - Daniel A Nolasco
- Water-Energy Nexus Center, University of California, Irvine, CA 92697-2175, USA; Nolasco y Asociados, S.A., Congreso 1908, Piso 2D, Buenos Aires C1428BVB, Argentina
| | - Diego Rosso
- Water-Energy Nexus Center, University of California, Irvine, CA 92697-2175, USA; Department of Civil and Environmental Engineering, University of California, Irvine, CA 92697-2175, USA
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56
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Keating C, Chin JP, Hughes D, Manesiotis P, Cysneiros D, Mahony T, Smith CJ, McGrath JW, O'Flaherty V. Biological Phosphorus Removal During High-Rate, Low-Temperature, Anaerobic Digestion of Wastewater. Front Microbiol 2016; 7:226. [PMID: 26973608 PMCID: PMC4776080 DOI: 10.3389/fmicb.2016.00226] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 02/12/2016] [Indexed: 12/20/2022] Open
Abstract
We report, for the first time, extensive biologically mediated phosphate removal from wastewater during high-rate anaerobic digestion (AD). A hybrid sludge bed/fixed-film (packed pumice stone) reactor was employed for low-temperature (12°C) anaerobic treatment of synthetic sewage wastewater. Successful phosphate removal from the wastewater (up to 78% of influent phosphate) was observed, mediated by biofilms in the reactor. Scanning electron microscopy and energy dispersive X-ray analysis revealed the accumulation of elemental phosphorus (∼2%) within the sludge bed and fixed-film biofilms. 4′, 6-diamidino-2-phenylindole (DAPI) staining indicated phosphorus accumulation was biological in nature and mediated through the formation of intracellular inorganic polyphosphate (polyP) granules within these biofilms. DAPI staining further indicated that polyP accumulation was rarely associated with free cells. Efficient and consistent chemical oxygen demand (COD) removal was recorded, throughout the 732-day trial, at applied organic loading rates between 0.4 and 1.5 kg COD m-3 d-1 and hydraulic retention times of 8–24 h, while phosphate removal efficiency ranged from 28 to 78% on average per phase. Analysis of protein hydrolysis kinetics and the methanogenic activity profiles of the biomass revealed the development, at 12°C, of active hydrolytic and methanogenic populations. Temporal microbial changes were monitored using Illumina MiSeq analysis of bacterial and archaeal 16S rRNA gene sequences. The dominant bacterial phyla present in the biomass at the conclusion of the trial were the Proteobacteria and Firmicutes and the dominant archaeal genus was Methanosaeta. Trichococcus and Flavobacterium populations, previously associated with low temperature protein degradation, developed in the reactor biomass. The presence of previously characterized polyphosphate accumulating organisms (PAOs) such as Rhodocyclus, Chromatiales, Actinobacter, and Acinetobacter was recorded at low numbers. However, it is unknown as yet if these were responsible for the luxury polyP uptake observed in this system. The possibility of efficient phosphate removal and recovery from wastewater during AD would represent a major advance in the scope for widespread application of anaerobic wastewater treatment technologies.
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Affiliation(s)
- Ciara Keating
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway Ireland
| | - Jason P Chin
- School of Biological Sciences and the Institute for Global Food Security, The Queen's University of Belfast Belfast, UK
| | - Dermot Hughes
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway Ireland
| | - Panagiotis Manesiotis
- School of Chemistry and Chemical Engineering, The Queen's University of Belfast Belfast, UK
| | - Denise Cysneiros
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway Ireland
| | - Therese Mahony
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway Ireland
| | - Cindy J Smith
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway Ireland
| | - John W McGrath
- School of Biological Sciences and the Institute for Global Food Security, The Queen's University of Belfast Belfast, UK
| | - Vincent O'Flaherty
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway Ireland
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57
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Kim J, Lee C. Response of a continuous anaerobic digester to temperature transitions: A critical range for restructuring the microbial community structure and function. WATER RESEARCH 2016; 89:241-51. [PMID: 26689661 DOI: 10.1016/j.watres.2015.11.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 11/24/2015] [Accepted: 11/26/2015] [Indexed: 05/03/2023]
Abstract
Temperature is a crucial factor that significantly influences the microbial activity and so the methanation performance of an anaerobic digestion (AD) process. Therefore, how to control the operating temperature for optimal activity of the microbes involved is a key to stable AD. This study examined the response of a continuous anaerobic reactor to a series of temperature shifts over a wide range of 35-65 °C using a dairy-processing byproduct as model wastewater. During the long-term experiment for approximately 16 months, the reactor was subjected to stepwise temperature increases by 5 °C at a fixed HRT of 15 days. The reactor showed stable performance within the temperature range of 35-45 °C, with the methane production rate and yield being maximum at 45 °C (18% and 26% greater, respectively, than at 35 °C). However, the subsequent increase to 50 °C induced a sudden performance deterioration with a complete cessation of methane recovery, indicating that the temperature range between 45 °C and 50 °C had a critical impact on the transition of the reactor's methanogenic activity from mesophilic to thermophilic. This serious process perturbation was associated with a severe restructuring of the reactor microbial community structure, particularly of methanogens, quantitatively as well as qualitatively. Once restored by interrupted feeding for about two months, the reactor maintained fairly stable performance under thermophilic conditions until it was upset again at 65 °C. Interestingly, in contrast to most previous reports, hydrogenotrophs largely dominated the methanogen community at mesophilic temperatures while acetotrophs emerged as a major group at thermophilic temperature. This implies that the primary methanogenesis route of the reactor shifted from hydrogen- to acetate-utilizing pathways with the temperature shifts from mesophilic to thermophilic temperatures. Our observations suggest that a mesophilic digester may not need to be cooled at up to 45 °C in case of undesired temperature rise, for example, by excessive self-heating, which offers a possibility to reduce operating costs.
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Affiliation(s)
- Jaai Kim
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 689-798, Republic of Korea
| | - Changsoo Lee
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 689-798, Republic of Korea.
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58
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The Vertical Distribution of Sediment Archaeal Community in the "Black Bloom" Disturbing Zhushan Bay of Lake Taihu. ARCHAEA-AN INTERNATIONAL MICROBIOLOGICAL JOURNAL 2016; 2016:8232135. [PMID: 26884723 PMCID: PMC4738990 DOI: 10.1155/2016/8232135] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 11/27/2015] [Accepted: 12/20/2015] [Indexed: 11/18/2022]
Abstract
Using the Illumina sequencing technology, we investigated the vertical distribution of archaeal community in the sediment of Zhushan Bay of Lake Taihu, where the black bloom frequently occurred in summer. Overall, the Miscellaneous Crenarchaeotal Group (MCG), Deep Sea Hydrothermal Vent Group 6 (DHVEG-6), and Methanobacterium dominated the archaeal community. However, we observed significant difference in composition of archaeal community among different depths of the sediment. DHVEG-6 dominated in the surface layer (0–3 cm) sediment. Methanobacterium was the dominating archaeal taxa in the L2 (3–6 cm) and L3 (6–10) sediment. MCG was most abundant in the L4 (10–15 cm) and L5 (15–20 cm) sediment. Besides, DHVEG-6 was significantly affected by the concentration of total phosphorus (TP). And loss on ignition (LOI) was an important environmental factor for Methanobacterium. As the typical archaeal taxa in the surface layer sediment, DHVEG-6 and Methanobacterium might be more adapted to abundant substrate supply from cyanobacterial blooms and take active part in the biomass transformation. We propose that DHVEG-6 and Methanobacterium could be the key archaeal taxa correlated with the “black bloom” formation in Zhushan Bay.
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59
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Dong H, Dong H, Zhang Z, Sun S, Wang W, Ke M, Song Z, Zhang Z, Wang J, Wu WM. Microbial community dynamics in an anaerobic biofilm reactor treating heavy oil refinery wastewater. RSC Adv 2016. [DOI: 10.1039/c6ra22469e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We have established an anaerobic biofilm reactor (AnBR) for treating heavy oil refinery wastewater at the field scale for the first time.
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Affiliation(s)
- Honghong Dong
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum
- Beijing
- P. R. China
| | - Hao Dong
- College of Chemistry and Environmental Engineering
- Yangtze University
- Jingzhou 434023
- P. R. China
| | - Zhongzhi Zhang
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum
- Beijing
- P. R. China
| | - Shanshan Sun
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum
- Beijing
- P. R. China
| | - Wei Wang
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum
- Beijing
- P. R. China
| | - Ming Ke
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum
- Beijing
- P. R. China
| | - Zhaozheng Song
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum
- Beijing
- P. R. China
| | - Zhenjia Zhang
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Jianfeng Wang
- Core Genomic Facility
- Beijing Institute of Genomics
- Chinese Academy of Science
- Beijing
- P. R. China
| | - Wei-Min Wu
- Department of Civil and Environmental Engineering
- William & Cloy Codiga Resource Recovery Research Center
- Center for Sustainable Development & Global Competitiveness
- Stanford University
- Stanford
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60
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Zhang YK, Liu XH, Liu XW, Zha YF, Xu XL, Ren ZG, Jiang HC, Wang HC. Research advances in deriving renewable energy from biomass in wastewater treatment plants. RSC Adv 2016. [DOI: 10.1039/c6ra06868e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Anaerobic digestion (AD) can be used to derive renewable energy from biomass in wastewater treatment plants, and the produced biogas represents a valuable end-product that can greatly offset operation costs.
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Affiliation(s)
- Yuan-kai Zhang
- School of Environment & Natural Resource
- Renmin University of China
- Beijing 100872
- China
| | - Xiu-hong Liu
- School of Environment & Natural Resource
- Renmin University of China
- Beijing 100872
- China
| | - Xiao-wei Liu
- School of Environment & Natural Resource
- Renmin University of China
- Beijing 100872
- China
| | - Yi-fei Zha
- School of Environment & Natural Resource
- Renmin University of China
- Beijing 100872
- China
| | - Xiang-long Xu
- School of Environment & Natural Resource
- Renmin University of China
- Beijing 100872
- China
| | - Zheng-guang Ren
- School of Environment & Natural Resource
- Renmin University of China
- Beijing 100872
- China
| | - Hang-cheng Jiang
- School of Environment & Natural Resource
- Renmin University of China
- Beijing 100872
- China
| | - Hong-chen Wang
- School of Environment & Natural Resource
- Renmin University of China
- Beijing 100872
- China
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61
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Chen X, Guo J, Xie GJ, Liu Y, Yuan Z, Ni BJ. A new approach to simultaneous ammonium and dissolved methane removal from anaerobic digestion liquor: A model-based investigation of feasibility. WATER RESEARCH 2015; 85:295-303. [PMID: 26342913 DOI: 10.1016/j.watres.2015.08.046] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 08/16/2015] [Accepted: 08/24/2015] [Indexed: 06/05/2023]
Abstract
The presence of a high level of dissolved methane (e.g., 20-26 g m(-3)) in the anaerobic sludge digestion liquor represents a major challenge to the treatment of this stream, as its emission to the atmosphere contributes significantly to the carbon footprint of wastewater treatment. Here we propose a new approach to simultaneous ammonium and dissolved methane removal from the anaerobic digestion liquor through integrating partial nitritation-Anammox and denitrifying anaerobic methane oxidation (DAMO) processes in a single-stage membrane biofilm reactor (MBfR). In such an MBfR, the anaerobic digestion liquor is provided in the bulk liquid, while oxygen is supplied through gas-permeable membranes to avoid dissolved methane stripping. A previously developed model with appropriate extensions was applied to assess the system performance under different operational conditions and the corresponding microbial interactions. Both influent surface loading (or hydraulic retention time) and oxygen surface loading are found to significantly influence the total nitrogen (TN) and dissolved methane removal, which jointly determine the overall system performance. The counter diffusion and concentration gradients of substrates cause microbial stratification in the biofilm, where ammonia-oxidizing bacteria (AOB) attach close to the membrane surface (biofilm base) where oxygen and ammonium are available, while Anammox and DAMO microorganisms jointly grow in the biofilm layer close to the bulk liquid where methane, ammonium, and nitrite are available with the latter produced by AOB. These results provide first insights and useful information for the design and operation of this new technology for simultaneous ammonium and dissolved methane removal in its potential future applications.
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Affiliation(s)
- Xueming Chen
- Advanced Water Management Centre, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Jianhua Guo
- Advanced Water Management Centre, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Guo-Jun Xie
- Advanced Water Management Centre, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Yiwen Liu
- Advanced Water Management Centre, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Zhiguo Yuan
- Advanced Water Management Centre, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Bing-Jie Ni
- Advanced Water Management Centre, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia.
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62
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Yeo H, An J, Reid R, Rittmann BE, Lee HS. Contribution of Liquid/Gas Mass-Transfer Limitations to Dissolved Methane Oversaturation in Anaerobic Treatment of Dilute Wastewater. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:10366-10372. [PMID: 26238158 DOI: 10.1021/acs.est.5b02560] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The mechanisms controlling the accumulation of dissolved methane in anaerobic membrane bioreactors (AnMBRs) treating a synthetic dilute wastewater (a glucose medium) were assessed experimentally and theoretically. The AnMBR was maintained at a temperature of 24-26 °C as the organic loading rate increased from 0.39 to 1.1 kg COD/m(3)-d. The measured concentration of dissolved methane was consistently 2.2- to 2.5-fold larger than the concentration of dissolved methane at thermodynamic equilibrium with the measured CH4 partial pressure, and the fraction of dissolved methane was as high as 76% of the total methane produced. The low gas production rate in the AnMBR significantly slowed the mass transport of dissolved methane to the gas phase. Although the production rate of total methane increased linearly with the COD loading rate, the concentration of dissolved methane only slightly increased with an increasing organic loading rate, because the mass-transfer rate increased by almost 5-fold as the COD loading increased from 0.39 to 1.1 kg COD/m(3)-d. Thus, slow mass transport kinetics exacerbated the situation in which dissolved methane accounted for a substantial fraction of the total methane generated from the AnMBR.
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Affiliation(s)
- Hyeongu Yeo
- Department of Civil and Environmental Engineering, University of Waterloo , 200 University Avenue West, Waterloo, Ontario Canada , N2L3G1
| | - Junyeong An
- Department of Civil and Environmental Engineering, University of Waterloo , 200 University Avenue West, Waterloo, Ontario Canada , N2L3G1
| | - Robertson Reid
- Department of Civil and Environmental Engineering, University of Waterloo , 200 University Avenue West, Waterloo, Ontario Canada , N2L3G1
| | - Bruce E Rittmann
- Swette Center for Environmental Biotechnology, The Biodesign Institute at Arizona State University , P.O. Box 875701, Tempe, Arizona 85287-5701, United States
| | - Hyung-Sool Lee
- Department of Civil and Environmental Engineering, University of Waterloo , 200 University Avenue West, Waterloo, Ontario Canada , N2L3G1
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63
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Smith AL, Skerlos SJ, Raskin L. Membrane biofilm development improves COD removal in anaerobic membrane bioreactor wastewater treatment. Microb Biotechnol 2015; 8:883-94. [PMID: 26238293 PMCID: PMC4554476 DOI: 10.1111/1751-7915.12311] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 07/01/2015] [Accepted: 07/09/2015] [Indexed: 02/03/2023] Open
Abstract
Membrane biofilm development was evaluated to improve psychrophilic (15°C) anaerobic membrane bioreactor (AnMBR) treatment of domestic wastewater. An AnMBR containing three replicate submerged membrane housings with separate permeate collection was operated at three levels of membrane fouling by independently controlling biogas sparging for each membrane unit. High membrane fouling significantly improved permeate quality, but resulted in dissolved methane in the permeate at a concentration two to three times the equilibrium concentration predicted by Henry's law. Illumina sequencing of 16S rRNA targeting Bacteria and Archaea and reverse transcription-quantitative polymerase chain reaction targeting the methyl coenzyme-M reductase (mcrA) gene in methanogens indicated that the membrane biofilm was enriched in highly active methanogens and syntrophic bacteria. Restoring fouled membranes to a transmembrane pressure (TMP) near zero by increasing biogas sparging did not disrupt the biofilm's treatment performance, suggesting that microbes in the foulant layer were tightly adhered and did not significantly contribute to TMP. Dissolved methane oversaturation persisted without high TMP, implying that methanogenesis in the biofilm, rather than high TMP, was the primary driving force in methane oversaturation. The results describe an attractive operational strategy to improve treatment performance in low-temperature AnMBR by supporting syntrophy and methanogenesis in the membrane biofilm through controlled membrane fouling.
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Affiliation(s)
- Adam L Smith
- Department of Civil and Environmental Engineering, University of Michigan, 2350 Hayward Road, Ann Arbor, MI, 48109, USA
| | - Steven J Skerlos
- Department of Civil and Environmental Engineering, University of Michigan, 2350 Hayward Road, Ann Arbor, MI, 48109, USA.,Department of Mechanical Engineering, University of Michigan, 2350 Hayward Road, Ann Arbor, MI, 48109, USA
| | - Lutgarde Raskin
- Department of Civil and Environmental Engineering, University of Michigan, 2350 Hayward Road, Ann Arbor, MI, 48109, USA
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64
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Impact of membrane addition for effluent extraction on the performance and sludge characteristics of upflow anaerobic sludge blanket reactors treating municipal wastewater. J Memb Sci 2015. [DOI: 10.1016/j.memsci.2014.12.021] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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65
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Kuroda K, Hatamoto M, Nakahara N, Abe K, Takahashi M, Araki N, Yamaguchi T. Community composition of known and uncultured archaeal lineages in anaerobic or anoxic wastewater treatment sludge. MICROBIAL ECOLOGY 2015; 69:586-596. [PMID: 25373332 DOI: 10.1007/s00248-014-0525-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 10/21/2014] [Indexed: 06/04/2023]
Abstract
Microbial systems are widely used to treat different types of wastewater from domestic, agricultural, and industrial sources. Community composition is an important factor in determining the successful performance of microbial treatment systems; however, a variety of uncultured and unknown lineages exist in sludge that requires identification and characterization. The present study examined the archaeal community composition in methanogenic, denitrifying, and nitrogen-/phosphate-removing wastewater treatment sludge by Archaea-specific 16S rRNA gene sequencing analysis using Illumina sequencing technology. Phylotypes belonging to Euryarchaeota, including methanogens, were most abundant in all samples except for nitrogen-/phosphate-removing wastewater treatment sludge. High levels of Deep Sea Hydrothermal Vent Group 6 (DHVEG-6), WSA2, Terrestrial Miscellaneous Euryarchaeotal Group, and Miscellaneous Crenarchaeotic Group were also detected. Interestingly, DHVEG-6 was dominant in nitrogen-/phosphate-removing wastewater treatment sludge, indicating that unclear lineages of Archaea still exist in the anaerobic wastewater treatment sludges. These results reveal a previously unknown diversity of Archaea in sludge that can potentially be exploited for the development of more efficient wastewater treatment strategies.
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Affiliation(s)
- Kyohei Kuroda
- Department of Environmental Systems Engineering, Nagaoka University of Technology, 1603-1, Kami-tomioka, Nagaoka, Niigata, 940-2188, Japan,
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66
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Matsuura N, Hatamoto M, Sumino H, Syutsubo K, Yamaguchi T, Ohashi A. Recovery and biological oxidation of dissolved methane in effluent from UASB treatment of municipal sewage using a two-stage closed downflow hanging sponge system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 151:200-209. [PMID: 25576697 DOI: 10.1016/j.jenvman.2014.12.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 12/05/2014] [Accepted: 12/10/2014] [Indexed: 06/04/2023]
Abstract
A two-stage closed downflow hanging sponge (DHS) reactor was used as a post-treatment to prevent methane being emitted from upflow anaerobic sludge blanket (UASB) effluents containing unrecovered dissolved methane. The performance of the closed DHS reactor was evaluated using real municipal sewage at ambient temperatures (10-28 °C) for one year. The first stage of the closed DHS reactor was intended to recover dissolved methane from the UASB effluent and produce a burnable gas with a methane concentration greater than 30%, and its recovery efficiency was 57-88%, although the amount of dissolved methane in the UASB effluent fluctuated in the range of 46-68 % of methane production greatly depending on the temperature. The residual methane was oxidized and the remaining organic carbon was removed in the second closed DHS reactor, and this reactor performed very well, removing more than 99% of the dissolved methane during the experimental period. The rate at which air was supplied to the DHS reactor was found to be one of the most important operating parameters. Microbial community analysis revealed that seasonal changes in the methane-oxidizing bacteria were key to preventing methane emissions.
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Affiliation(s)
- Norihisa Matsuura
- Department of Social and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan; Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, Higashi 1-1-1, Tsukuba, Ibaraki 305-8566, Japan
| | - Masashi Hatamoto
- Department of Environmental System Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
| | - Haruhiko Sumino
- Department of Civil Engineering, Gifu National College of Technology, 2236-2 Kamimakuwa, Motosu, Gifu 501-0495, Japan
| | - Kazuaki Syutsubo
- Water and Soil Environmental Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Takashi Yamaguchi
- Department of Environmental System Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
| | - Akiyoshi Ohashi
- Department of Social and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan.
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67
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Tian Z, Zhang Y, Li Y, Chi Y, Yang M. Rapid establishment of thermophilic anaerobic microbial community during the one-step startup of thermophilic anaerobic digestion from a mesophilic digester. WATER RESEARCH 2015; 69:9-19. [PMID: 25463927 DOI: 10.1016/j.watres.2014.11.001] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 10/25/2014] [Accepted: 11/02/2014] [Indexed: 06/04/2023]
Abstract
The purpose of this study was to explore how fast the thermophilic anaerobic microbial community could be established during the one-step startup of thermophilic anaerobic digestion from a mesophilic digester. Stable thermophilic anaerobic digestion was achieved within 20 days from a mesophilic digester treating sewage sludge by adopting the one-step startup strategy. The succession of archaeal and bacterial populations over a period of 60 days after the temperature increment was followed by using 454-pyrosequencing and quantitative PCR. After the increase of temperature, thermophilic methanogenic community was established within 11 days, which was characterized by the fast colonization of Methanosarcina thermophila and two hydrogenotrophic methanogens (Methanothermobacter spp. and Methanoculleus spp.). At the same time, the bacterial community was dominated by Fervidobacterium, whose relative abundance rapidly increased from 0 to 28.52 % in 18 days, followed by other potential thermophilic genera, such as Clostridium, Coprothermobacter, Anaerobaculum and EM3. The above result demonstrated that the one-step startup strategy could allow the rapid establishment of the thermophilic anaerobic microbial community.
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Affiliation(s)
- Zhe Tian
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
| | - Yu Zhang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
| | - Yuyou Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06, Aramakiaza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Yongzhi Chi
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
| | - Min Yang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
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68
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Saha S, Badhe N, Seuntjens D, Vlaeminck SE, Biswas R, Nandy T. Effective carbon and nutrient treatment solutions for mixed domestic-industrial wastewater in India. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 72:651-657. [PMID: 26247765 DOI: 10.2166/wst.2015.254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The present study evaluates effectiveness of up-flow anaerobic sludge blanket (UASB) reactor followed by two post-anaerobic treatment options, namely free-surface, up-flow constructed wetland (FUP-CW) and oxygen-limited anaerobic nitrification/denitrification (OLAND) processes in treating sewage from the peri-urban areas in India receiving illegal industrial infiltrations. The UASB studies yielded robust results towards fluctuating strength of sewage and consistently removed 87-98% chemical oxygen demand (COD) at a hydraulic retention time of 1.5-2 d. The FUP-CW removed 68.5±13% COD, 68±3% NH4+-N, 38±5% PO4(3-)-P, 97.6±5% suspended particles and 97±13% fecal coliforms. Nutrient removal was found to be limiting in FUP-CW, especially in winter. Nitrogen removal in the OLAND process were 100 times higher than the FUP-CW process. Results show that UASB followed by FUP-CW can be an excellent, decentralized sewage treatment option, except during winter when nutrient removal is limited in FUP-CW. Hence, the study proposes bio-augmentation of FUP-CW with OLAND biomass for overall improvement in the performance of UASB followed by FUP-CW process.
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Affiliation(s)
- S Saha
- Wastewater Technology Division, CSIR-National Environmental Engineering Research Institute, Nagpur 440 020, India E-mail:
| | - N Badhe
- Wastewater Technology Division, CSIR-National Environmental Engineering Research Institute, Nagpur 440 020, India E-mail:
| | - D Seuntjens
- Laboratory of Microbial Ecology and Technology, Ghent University, 9000 Ghent, Belgium
| | - S E Vlaeminck
- Laboratory of Microbial Ecology and Technology, Ghent University, 9000 Ghent, Belgium; Research Group of Sustainable Energy, Air and Water Technology, Department of Bioscience Engineering, University of Antwerp, 2020 Antwerpen, Belgium
| | - R Biswas
- Wastewater Technology Division, CSIR-National Environmental Engineering Research Institute, Nagpur 440 020, India E-mail:
| | - T Nandy
- Wastewater Technology Division, CSIR-National Environmental Engineering Research Institute, Nagpur 440 020, India E-mail:
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69
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Deng Q, Dhar BR, Elbeshbishy E, Lee HS. Ammonium nitrogen removal from the permeates of anaerobic membrane bioreactors: economic regeneration of exhausted zeolite. ENVIRONMENTAL TECHNOLOGY 2014; 35:2008-2017. [PMID: 24956795 DOI: 10.1080/09593330.2014.889759] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study revealed that ammonium exchange of natural zeolite could be an economical method of nitrogen removal from the permeates of anaerobic membrane bioreactors (AnMBRs). It was found that the mass ratio of Na+ to Zeolite - NH4+ - N significantly affected regeneration efficiency (RE), not simply NaCI concentration. Batch experiments showed that the mass ratio of 750g Na+/g Zeolite - NH4+ - N was required to achieve RE over 90% in 2h at pH 9. However, the alkaline regeneration at pH 12 significantly decreased the mass ratio down to 4.2 in batch tests. It was confirmed that the alkaline regeneration only needed NaCl 10 g/L (the mass of Na+ to Zeolite - NH4+ - N of 4.2) for RE of 85% in 2 h of reaction time in continuous column tests. Economic analysis showed that this alkaline regeneration decreased chemical costs over 10 times as compared with a conventional regeneration method. A significant bottleneck of zeolite processes would be the requirement of substituting exhausted zeolite with virgin one, due to the reductions of ammonium exchange capacity and RE.
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70
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Smith AL, Stadler LB, Cao L, Love NG, Raskin L, Skerlos SJ. Navigating wastewater energy recovery strategies: a life cycle comparison of anaerobic membrane bioreactor and conventional treatment systems with anaerobic digestion. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:5972-5981. [PMID: 24742289 DOI: 10.1021/es5006169] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The objective of this study was to evaluate emerging anaerobic membrane bioreactor (AnMBR) technology in comparison with conventional wastewater energy recovery technologies. Wastewater treatment process modeling and systems analyses were combined to evaluate the conditions under which AnMBR may produce more net energy and have lower life cycle environmental emissions than high rate activated sludge with anaerobic digestion (HRAS+AD), conventional activated sludge with anaerobic digestion (CAS+AD), and an aerobic membrane bioreactor with anaerobic digestion (AeMBR+AD). For medium strength domestic wastewater treatment under baseline assumptions at 15 °C, AnMBR recovered 49% more energy as biogas than HRAS+AD, the most energy positive conventional technology considered, but had significantly higher energy demands and environmental emissions. Global warming impacts associated with AnMBR were largely due to emissions of effluent dissolved methane. For high strength domestic wastewater treatment, AnMBR recovered 15% more net energy than HRAS+AD, and the environmental emissions gap between the two systems was reduced. Future developments of AnMBR technology in low energy fouling control, increased flux, and management of effluent methane emissions would make AnMBR competitive with HRAS+AD. Rapid advancements in AnMBR technology must continue to achieve its full economic and environmental potential as an energy recovery strategy for domestic wastewater.
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Affiliation(s)
- Adam L Smith
- Department of Civil and Environmental Engineering, University of Michigan , 2350 Hayward Street, Ann Arbor, Michigan 48109, United States
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71
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Gao H, Scherson YD, Wells GF. Towards energy neutral wastewater treatment: methodology and state of the art. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2014; 16:1223-46. [PMID: 24777396 DOI: 10.1039/c4em00069b] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Conventional biological wastewater treatment processes are energy-intensive endeavors that yield little or no recovered resources and often require significant external chemical inputs. However, with embedded energy in both organic carbon and nutrients (N, P), wastewater has the potential for substantial energy recovery from a low-value (or no-value) feedstock. A paradigm shift is thus now underway that is transforming our understanding of necessary energy inputs, and potential energy or resource outputs, from wastewater treatment, and energy neutral or even energy positive treatment is increasingly emphasized in practice. As two energy sources in domestic wastewater, we argue that the most suitable way to maximize energy recovery from wastewater treatment is to separate carbon and nutrient (particularly N) removal processes. Innovative anaerobic treatment technologies and bioelectrochemical processes are now being developed as high efficiency methods for energy recovery from waste COD. Recently, energy savings or even generation from N removal has become a hotspot of research and development activity, and nitritation-anammox, the newly developed CANDO process, and microalgae cultivation are considered promising techniques. In this paper, we critically review these five emerging low energy or energy positive bioprocesses for sustainable wastewater treatment, with a particular focus on energy optimization in management of nitrogenous oxygen demand. Taken together, these technologies are now charting a path towards to a new paradigm of resource and energy recovery from wastewater.
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Affiliation(s)
- Han Gao
- Civil and Environmental Engineering, Northwestern University, Evanston, IL, USA.
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72
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Gao DW, Hu Q, Yao C, Ren NQ. Treatment of domestic wastewater by an integrated anaerobic fluidized-bed membrane bioreactor under moderate to low temperature conditions. BIORESOURCE TECHNOLOGY 2014; 159:193-198. [PMID: 24650533 DOI: 10.1016/j.biortech.2014.02.086] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 02/19/2014] [Accepted: 02/22/2014] [Indexed: 06/03/2023]
Abstract
The performance of a novel integrated anaerobic fluidized-bed membrane bioreactor (IAFMBR) for treating practical domestic wastewater was investigated at a step dropped temperature from 35, 25, to 15°C. The COD removal was 74.0 ± 3.7%, 67.1 ± 2.9% and 51.1 ± 2.6% at 35, 25 and 15°C, respectively. The COD removal depended both on influent strength and operational temperature. The accumulation of VFAs (Volatile Fatty Acids) was affected by temperature, and acetic acid was the most sensitive one to the decrease of temperature. The methanogenic activity of the sludge decreased eventually and the methane yield was dropped from 0.17 ± 0.03, 0.15 ± 0.02 to 0.10 ± 0.01 L/Ld. And as compared with a mesophilic temperature, a low temperature can accelerate membrane biofouling. Proteins were the dominant matters causing membrane fouling at low temperature and membrane fouling can be mitigated by granular active carbon (GAC) through protein absorption.
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Affiliation(s)
- Da-Wen Gao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Qi Hu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Chen Yao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Nan-Qi Ren
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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73
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A novel electrochemical membrane bioreactor as a potential net energy producer for sustainable wastewater treatment. Sci Rep 2013; 3:1864. [PMID: 23689529 PMCID: PMC3659393 DOI: 10.1038/srep01864] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 05/03/2013] [Indexed: 11/09/2022] Open
Abstract
One possible way to address both water and energy shortage issues, the two of major global challenges, is to recover energy and water resource from wastewater. Herein, a novel electrochemical membrane bioreactor (EMBR) was developed to recover energy from wastewater and meantime harvest clean water for reuse. With the help of the microorganisms in the biocatalysis and biodegradation process, net electricity could be recovered from a low-strength synthetic wastewater after estimating total energy consumption of this system. In addition, high-quality clean water was obtained for reuse. The results clearly demonstrate that, under the optimized operating conditions, it is possible to recover net energy from wastewater, while at the same time to harvest high-quality effluent for reuse with this novel wastewater treatment system.
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74
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Wan S, Sun L, Douieb Y, Sun J, Luo W. Anaerobic digestion of municipal solid waste composed of food waste, wastepaper, and plastic in a single-stage system: performance and microbial community structure characterization. BIORESOURCE TECHNOLOGY 2013; 146:619-627. [PMID: 23974214 DOI: 10.1016/j.biortech.2013.07.140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 07/25/2013] [Accepted: 07/29/2013] [Indexed: 06/02/2023]
Abstract
The performance of municipal organic solid waste anaerobic digestion was investigated using a single-stage bioreactor, and the microbial community structures were characterized during the digestion. The results showed that the biogas and methane production rates were 592.4 and 370.1L/kg with volatile solid added at the ratio of 2:1:1 for food waste, wastepaper, and plastic based on dry weight. The methane volume concentration fluctuated between 44.3% and 75.4% at steady stage. Acetic acid, propionic acid, and butyric acid were the major volatile fatty acids produced during the digestion process. The anaerobic process was not inhibited by the accumulation of ammonia and free ammonia. The bacterial community was found to consist of at least 21 bands of bacteria and 12 bands of archaea at the steady state. All of the results indicated that the mixture of food waste, wastepaper, and plastic could be efficiently co-digested using the anaerobic digestion system.
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Affiliation(s)
- Shungang Wan
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Lei Sun
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China; Guangxi University, School of Environment, Nanning 530004, PR China
| | - Yaniv Douieb
- AgroParisTech, 16 rue Claude Bernard, F-75231 Paris, France
| | - Jian Sun
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Wensui Luo
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China.
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75
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Calderón K, González-Martínez A, Gómez-Silván C, Osorio F, Rodelas B, González-López J. Archaeal diversity in biofilm technologies applied to treat urban and industrial wastewater: recent advances and future prospects. Int J Mol Sci 2013; 14:18572-98. [PMID: 24022691 PMCID: PMC3794796 DOI: 10.3390/ijms140918572] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 08/22/2013] [Accepted: 08/30/2013] [Indexed: 02/07/2023] Open
Abstract
Biological wastewater treatment (WWT) frequently relies on biofilms for the removal of anthropogenic contaminants. The use of inert carrier materials to support biofilm development is often required, although under certain operating conditions microorganisms yield structures called granules, dense aggregates of self-immobilized cells with the characteristics of biofilms maintained in suspension. Molecular techniques have been successfully applied in recent years to identify the prokaryotic communities inhabiting biofilms in WWT plants. Although methanogenic Archaea are widely acknowledged as key players for the degradation of organic matter in anaerobic bioreactors, other biotechnological functions fulfilled by Archaea are less explored, and research on their significance and potential for WWT is largely needed. In addition, the occurrence of biofilms in WWT plants can sometimes be a source of operational problems. This is the case for membrane bioreactors (MBR), an advanced technology that combines conventional biological treatment with membrane filtration, which is strongly limited by biofouling, defined as the undesirable accumulation of microbial biofilms and other materials on membrane surfaces. The prevalence and spatial distribution of archaeal communities in biofilm-based WWT as well as their role in biofouling are reviewed here, in order to illustrate the significance of this prokaryotic cellular lineage in engineered environments devoted to WWT.
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Affiliation(s)
- Kadiya Calderón
- Environmental Microbiology Group, Department of Microbiology, Faculty of Pharmacy, and Institute of Water Research, University of Granada, Campus de Cartuja s/n, Granada 18071, Spain; E-Mails: (C.G.-S.); (B.R.); (J.G.-L.)
| | - Alejandro González-Martínez
- Environmental Microbiology Group, Department of Civil Engineering, and Institute of Water Research, University of Granada; Campus de Cartuja s/n, Granada 18071, Spain; E-Mails: (A.G.-M.); (F.O.)
| | - Cinta Gómez-Silván
- Environmental Microbiology Group, Department of Microbiology, Faculty of Pharmacy, and Institute of Water Research, University of Granada, Campus de Cartuja s/n, Granada 18071, Spain; E-Mails: (C.G.-S.); (B.R.); (J.G.-L.)
| | - Francisco Osorio
- Environmental Microbiology Group, Department of Civil Engineering, and Institute of Water Research, University of Granada; Campus de Cartuja s/n, Granada 18071, Spain; E-Mails: (A.G.-M.); (F.O.)
| | - Belén Rodelas
- Environmental Microbiology Group, Department of Microbiology, Faculty of Pharmacy, and Institute of Water Research, University of Granada, Campus de Cartuja s/n, Granada 18071, Spain; E-Mails: (C.G.-S.); (B.R.); (J.G.-L.)
| | - Jesús González-López
- Environmental Microbiology Group, Department of Microbiology, Faculty of Pharmacy, and Institute of Water Research, University of Granada, Campus de Cartuja s/n, Granada 18071, Spain; E-Mails: (C.G.-S.); (B.R.); (J.G.-L.)
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76
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Pitakteeratham N, Hafuka A, Satoh H, Watanabe Y. High efficiency removal of phosphate from water by zirconium sulfate-surfactant micelle mesostructure immobilized on polymer matrix. WATER RESEARCH 2013; 47:3583-3590. [PMID: 23726694 DOI: 10.1016/j.watres.2013.04.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 04/02/2013] [Accepted: 04/04/2013] [Indexed: 06/02/2023]
Abstract
A zirconium sulfate-surfactant micelle mesostructure (ZS) was synthesized to investigate its capacity for phosphate removal from water. Its phosphate adsorption kinetics, the effect of pH and interfering anions, adsorption isotherm, desorption capacity, and reusability were investigated. The adsorption isotherms could be described by the Langmuir model. The ZS was an effective adsorbent for phosphate with a very high adsorption capacity (114 mg P/g ZS). The phosphate adsorption capacity increased with decrease in pH. Although the adsorption of nitrate, chloride and acetate ions was negligible, bicarbonate ions were found to be possible interfering anions. The adsorbed phosphate was desorbed effectively using NaOH solution. Since breakage of ZS particles resulted when using NaOH, ZS was immobilized on a polymer matrix and a 50-cycle adsorption-desorption test was carried out to determine the ZS-immobilized polymer (P-ZS) reusability. The P-ZS retained its functionality and adsorption and desorption capacity over 50 cycles without loss of original capacity. A phosphate solution containing about 10 mg P/L was treated in a column packed with P-ZS. The phosphate could be adsorbed completely onto P-ZS up to 1020 bed volumes. These results indicate clearly that ZS is a highly effective adsorbent for phosphate and enables the removal of phosphate from water.
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Affiliation(s)
- Niti Pitakteeratham
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Japan.
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Donoso-Bravo A, Bandara WMKRTW, Satoh H, Ruiz-Filippi G. Explicit temperature-based model for anaerobic digestion: application in domestic wastewater treatment in a UASB reactor. BIORESOURCE TECHNOLOGY 2013; 133:437-442. [PMID: 23454390 DOI: 10.1016/j.biortech.2013.01.174] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Revised: 01/30/2013] [Accepted: 01/31/2013] [Indexed: 06/01/2023]
Abstract
Temperature is an important environmental variable that can strongly affect the performance of anaerobic reactors working at ambient temperatures. This study presents a mechanistic mathematical model which depends in an explicit way on the operating temperature. The cardinal temperature model function is proposed to describe the temperature dependence of the kinetic parameters and the experimental data from an UASB-degasification system was used to calibrate and validate the model. The performance of the model is compared with the classic Arrhenius approach. The results showed that the temperature-based model of the anaerobic digestion is able to reproduce a long-term reactor operation in terms of biogas production and the concentration of organic matter at fluctuating ambient temperature.
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Affiliation(s)
- A Donoso-Bravo
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.
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