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Pichel A, Fra A, Morales N, Campos JL, Méndez R, Mosquera-Corral A, Val Del Río Á. Is the ammonia stripping pre-treatment suitable for the nitrogen removal via partial nitritation-anammox of OFMSW digestate? JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123458. [PMID: 32846255 DOI: 10.1016/j.jhazmat.2020.123458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/25/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
Treating the organic fraction of municipal solid waste (OFMSW) can be performed by coupling the anaerobic digestion (AD) and partial nitritation-anammox (PN-AMX) processes for organic matter and nitrogen removal, respectively. Besides, an ammonia stripping (AS) step before the AD benefit the removal of organic matter. In the present study, the operation of two PN-AMX sequencing batch reactors with and without AS pre-treated OFMSW digestate (AS-SBR and nAS-SBR, respectively) was assessed. The specific anammox activity decreased by 90 % for increasing proportions of fed OFMSW in both cases, indicating no differences over the anammox activity whether the AS pre-treatment is implemented or not. For 100 % OFMSW proportion, the AS-SBR achieved better effluent quality than the nAS-SBR (127 ± 88 vs. 1050 ± 23 mg N/L) but with lower nitrogen removal rates (58 ± 8 vs. 687 ± 32 g N/(L·d)). Still, the latter required successive re-inoculations to obtain higher removal rates. Changes in the microbial communities were mainly correlated to sCOD/N ratios in the OFMSW, being Candidatus Brocadia the dominant anamnmox species. The results proved the AS to be a suitable pre-treatment, despite the higher sCOD/N ratios in the OFMSW digestate, achieving good synergy between the PN-AMX and heterotrophic denitrification processes.
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Affiliation(s)
- Andrés Pichel
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, E-15705, Santiago de Compostela, Spain.
| | - Andrea Fra
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, E-15705, Santiago de Compostela, Spain
| | - Nicolás Morales
- Aqualia, Guillarei WWTP, Camino de la Veiga s/n, E-36720 Tui, Spain
| | - José Luis Campos
- Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Avda. Padre Hurtado 750, Viña del Mar, E- 2503500, Chile
| | - Ramón Méndez
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, E-15705, Santiago de Compostela, Spain
| | - Anuska Mosquera-Corral
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, E-15705, Santiago de Compostela, Spain
| | - Ángeles Val Del Río
- CRETUS Institute, Department of Chemical Engineering, Universidade de Santiago de Compostela, E-15705, Santiago de Compostela, Spain
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Mostafaii G, Mohebbi F, Dehghani R, Tarazouj F, Akbari M, Rovan M. An overview of comparing chemical oxygen demand removal methods from landfill leachate. INTERNATIONAL ARCHIVES OF HEALTH SCIENCES 2021. [DOI: 10.4103/iahs.iahs_43_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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3
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Potassium Ferrate (VI) as the Multifunctional Agent in the Treatment of Landfill Leachate. MATERIALS 2020; 13:ma13215017. [PMID: 33172185 PMCID: PMC7664322 DOI: 10.3390/ma13215017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/23/2020] [Accepted: 11/04/2020] [Indexed: 01/09/2023]
Abstract
Possible use of potassium ferrate (VI) (K2FeO4) for the treatment of landfill leachate (pH = 8.9, Chemical Oxygen Demand (COD) 770 mg O2/L, Total Organic Carbon (TOC) 230 mg/L, Total Nitrogen (Total N) 120 mg/L, Total Phosphorus (Total P) 12 mg/L, Total Coli Count (TCC) 6.8 log CFU/mL (Colony-Forming Unit/mL), Most Probable Number (MPN) of fecal enterococci 4.0 log/100 mL, Total Proteolytic Count (TPC) 4.4 log CFU/mL) to remove COD was investigated. Central Composite Design (CCD) and Response Surface Methodology (RSM) were applied for modelling and optimizing the purification process. Conformity of experimental and predicted data (R2 = 0.8477, Radj2 = 0.7462) were verified using Analysis of Variance (ANOVA). Application of K2FeO4 using CCD/RSM allowed to decrease COD, TOC, Total N, Total P, TCC, MPN of fecal enterococci and TPC by 76.2%, 82.6%, 68.3%, 91.6%, 99.0%, 95.8% and 99.3%, respectively, by using K2FeO4 0.390 g/L, at pH = 2.3 within 25 min. Application of equivalent amount of iron (as FeSO4 × 7H2O and FeCl3 × 6H2O) under the same conditions allowed to diminish COD, TOC, Total N, Total P, TCC, MPN of fecal enterococci and TPC only by 38.1%, 37.0%, 20.8%, 95.8%, 94.4%, 58.2%, 90.8% and 41.6%, 45.7%, 29.2%, 95.8%, 92.1%, 58.2%, 90.0%, respectively. Thus, K2FeO4 could be applied as an environmentally friendly reagent for landfill leachate treatment.
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Sun D, Hong X, Cui Z, Du Y, Hui KS, Zhu E, Wu K, Hui KN. Treatment of landfill leachate using magnetically attracted zero-valent iron powder electrode in an electric field. JOURNAL OF HAZARDOUS MATERIALS 2020; 388:121768. [PMID: 31843409 DOI: 10.1016/j.jhazmat.2019.121768] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/25/2019] [Accepted: 11/27/2019] [Indexed: 06/10/2023]
Abstract
This study combined electro-oxidation (EO) and electrocoagulation (EC) process (EO/EC) to treat landfill leachate by using RuO2-IrO2/Ti plate and microscale zero-valent iron powder composite anode. EO was achieved by direct oxidation and indirect oxidation on RuO2-IrO2/Ti plate, whereas EC was achieved using iron powder to lose electrons and produce coagulants in situ. The influences of variables including type of anode material, applied voltage, zero-valent iron dosage, interelectrode gap, and reaction temperature on EO/EC were evaluated. Results showed that at an applied voltage of 10 V, zero-valent iron dosage of 0.2 g, interelectrode gap of 1 cm, and non-temperature-controlled mode, the removal efficiencies were 72.5 % for total organic carbon (TOC), 98.5 % for ammonia, and 98.6 % for total phosphorus (TP). Some heavy metals and hardness were also removed. Further analysis indicated that the removal of TOC, ammonia, and TP followed pseudo-first order, pseudo-zero order, and pseudo-second order kinetic models, respectively. Other characteristics were examined by scanning electron microscopy-energy dispersive spectrometry, X-ray diffraction, and X-ray photoelectron spectroscopy. Overall, our results showed that EO/EC can be used to efficiently remove organic matter, ammonia, TP, and heavy metals from landfill leachate.
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Affiliation(s)
- Dongni Sun
- Department of Chemistry, Zhejiang Sci-tech University, Hangzhou, 310018, PR China; State Environment Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan, 430081, PR China
| | - Xiaoting Hong
- Department of Chemistry, Zhejiang Sci-tech University, Hangzhou, 310018, PR China.
| | - Zhonghua Cui
- School of Environment and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, PR China
| | - Yingying Du
- Department of Chemistry, Zhejiang Sci-tech University, Hangzhou, 310018, PR China
| | - K S Hui
- School of Engineering, Faculty of Science, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Enhao Zhu
- Department of Chemistry, Zhejiang Sci-tech University, Hangzhou, 310018, PR China
| | - Keming Wu
- State Environment Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan, 430081, PR China
| | - K N Hui
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China
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Wu L, Shen M, Li J, Huang S, Li Z, Yan Z, Peng Y. Cooperation between partial-nitrification, complete ammonia oxidation (comammox), and anaerobic ammonia oxidation (anammox) in sludge digestion liquid for nitrogen removal. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 254:112965. [PMID: 31401520 DOI: 10.1016/j.envpol.2019.112965] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 07/20/2019] [Accepted: 07/25/2019] [Indexed: 06/10/2023]
Abstract
The challenge of sludge digester liquor treatment is its high ammonium nitrogen (NH4+-N) concentration. Early reports found that complete ammonia oxidation (comammox) was not present and anaerobic ammonia oxidation (anammox) was difficult to achieve in most sludge digester liquor treatments. In this study, NH4+-N removal by cooperation between partial-nitrification, comammox, and anammox processes was achieved in a sequencing batch reactor (SBR) for sludge digester liquor treatment. The results showed that 2100-2200 mg/L of NH4+-N was removed in the SBR with 98.82% removal efficiency. In addition, 55.11% of NH4+-N was converted to nitrite nitrogen (NO2--N) by partial-nitrification, 25.43% of NH4+-N was converted to nitrate nitrogen (NO3--N) by comammox, and 18.28% of NH4+-N was removed by anammox. During the operation, in the SBR, the relative abundance of the dominant ammonia-oxidizing bacteria (Chitinophagaceae) was 18.89%, that of the dominant anammox bacteria (Candidatus Kuenenia) was 0.10%, and that of the dominant comammox bacteria (Nitrospira) was 0.20%. Therefore, the high nitrogen removal efficiency in this system was considered the result of the combination of the three processes. These results showed that comammox and anammox could play very important roles in nitrogen transformation and energy-saving in nitrogen removal systems.
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Affiliation(s)
- Lina Wu
- Key Laboratory of Urban Stormwater System and Water Environment (Ministry of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Mingyu Shen
- Key Laboratory of Urban Stormwater System and Water Environment (Ministry of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Jin Li
- Key Laboratory of Urban Stormwater System and Water Environment (Ministry of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Shan Huang
- Department of Civil and Environmental Engineering, Princeton University, Princeton 08544, USA
| | - Zhi Li
- Key Laboratory of Urban Stormwater System and Water Environment (Ministry of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Zhibin Yan
- Key Laboratory of Urban Stormwater System and Water Environment (Ministry of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China.
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Guan Y, Zhou J, Fu X, Zhao Y, Luo A, Xu J, Fu J, Zhao D. Effects of long-lasting nitrogen and organic shock loadings on an engineered biofilter treating matured landfill leachate. JOURNAL OF HAZARDOUS MATERIALS 2018; 360:536-543. [PMID: 30145480 DOI: 10.1016/j.jhazmat.2018.08.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Revised: 07/21/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
The decentralized bioreactor is a promising process for landfill leachate (LL) treatment, however, it is often confronted with various forms of shock loadings. To explore the robustness of bioreactors to the long-lasting substrate shocks, a long-term study of over 90 days was carried out to investigate the effects of nitrogen (mainly ammonium nitrogen, NH4-N) and organic (in terms of chemical oxygen demand, COD) shock loading on an engineered zeolite-based biofilter with alternative soil-mixed block (SMB) (EZS-biofilter) for treating matured LL. The low-, mid-, and high-strength intensity of matured LL was theoretical defined mainly according to the content of total nitrogen (TN) and COD. The experiment proved that the EZS-biofilter could effectively absorb the substrate shocks in a range of 104, 408, and 1357 mg/L as TN and 178, 590, and 1050 mg/L as COD, corresponding to the low-, medium-, and high-strength LL, respectively. A modified sensitivity index reflected that the nitrogen shock loadings exerted much more predominant influence than COD shock due to the great variation of nitrification/denitrification. The provided information in this study are beneficial for the practical engineered operation of biofilters for treating matured LL.
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Affiliation(s)
- Yidong Guan
- Jiangsu Provincial Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China; Key Laboratory of Environment Remediation and Ecological Health (Zhejiang University), Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jun Zhou
- Jiangsu Provincial Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Xiaoru Fu
- Jiangsu Provincial Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Yaqian Zhao
- Centre for Water Resources Research, School of Architecture, Landscape and Civil Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | - Ancheng Luo
- Key Laboratory of Environment Remediation and Ecological Health (Zhejiang University), Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jianqiang Xu
- Jiangsu Provincial Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Jie Fu
- Department of Environmental Science & Engineering, Fudan University, Shanghai 200438, China.
| | - Dongye Zhao
- Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, USA.
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Wang K, Li L, Tan F, Wu D. Treatment of Landfill Leachate Using Activated Sludge Technology: A Review. ARCHAEA (VANCOUVER, B.C.) 2018; 2018:1039453. [PMID: 30254508 PMCID: PMC6142762 DOI: 10.1155/2018/1039453] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/21/2018] [Accepted: 08/13/2018] [Indexed: 11/21/2022]
Abstract
Landfill leachate contains a large amount of organic matter and ammoniacal nitrogen. As such, it has become a complex and difficult issue within the water treatment industry. The activated sludge process has been found to be a good solution with low processing costs and is now therefore the core process for leachate treatment, especially for nitrogen removal. This paper describes the characteristics and treatment of leachate. Treatment of leachate using the activated sludge process includes the removal of organic matter, ammoniacal nitrogen, and total nitrogen (TN). The core method for the removal of organic matter involves anaerobic treatment supplemented with an aerobic process. Ammoniacal nitrogen is commonly removed using a conventional aerobic treatment, and advanced TN removal is achieved using endogenous denitrification or an anaerobic ammonium oxidation (ANAMMOX) process. Since biological processes are the most economical method for TN removal, a key issue is how to tap the full potential of the activated sludge process and improve TN removal from leachate. This complex issue has been identified as the focus of current scholars, as well as an important future direction for leachate research and development.
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Affiliation(s)
- Kai Wang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Lusheng Li
- Qingdao Xin Bei De Environmental Technology Co. Ltd., Qingdao 266000, China
| | - Fengxun Tan
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Daoji Wu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
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Efficient Utilization of Waste Carbon Source for Advanced Nitrogen Removal of Landfill Leachate. BIOMED RESEARCH INTERNATIONAL 2017; 2017:2057035. [PMID: 29435456 PMCID: PMC5757105 DOI: 10.1155/2017/2057035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 11/27/2017] [Indexed: 11/17/2022]
Abstract
A modified single sequencing batch reactor (SBR) was developed to remove the nitrogen of the real landfill leachate in this study. To take the full advantage of the SBR, stir phase was added before and after aeration, respectively. The new mechanism in this experiment could improve the removal of nitrogen efficiently by the utilization of carbon source in the raw leachate. This experiment adopts the SBR process to dispose of the real leachate, in which the COD and ammonia nitrogen concentrations were about 3800 mg/L and 1000 mg/L, respectively. Results showed that the removal rates of COD and total nitrogen were above 85% and 95%, respectively, and the effluent COD and total nitrogen were less than 500 mg/L and 40 mg/L under the condition of not adding any carbon source. Also, the specific nitrogen removal rate was 1.48 mgN/(h·gvss). In this process, polyhydroxyalkanoate (PHA) as a critical factor for the highly efficient nitrogen removal (>95%) was approved to be the primary carbon source in the sludge. Because most of the organic matter in raw water was used for denitrification, in the duration of this 160-day experiment, zero discharge of sludge was realized when the effluent suspended solids were 30-50 mg/L.
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Advanced nitrogen removal using bio-refractory organics as carbon source for biological treatment of landfill leachate. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.06.033] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Wu LN, Liang DW, Xu YY, Liu T, Peng YZ, Zhang J. A robust and cost-effective integrated process for nitrogen and bio-refractory organics removal from landfill leachate via short-cut nitrification, anaerobic ammonium oxidation in tandem with electrochemical oxidation. BIORESOURCE TECHNOLOGY 2016; 212:296-301. [PMID: 27115616 DOI: 10.1016/j.biortech.2016.04.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/04/2016] [Accepted: 04/10/2016] [Indexed: 06/05/2023]
Abstract
A cost-effective process, consisting of a denitrifying upflow anaerobic sludge blanket (UASB), an oxygen-limited anoxic/aerobic (A/O) process for short-cut nitrification, and an anaerobic reactor (ANR) for anaerobic ammonia oxidation (anammox), followed by an electrochemical oxidation process with a Ti-based SnO2-Sb2O5 anode, was developed to remove organics and nitrogen in a sewage diluted leachate. The final chemical oxygen demand (COD), ammonia nitrogen (NH4(+)-N) and total nitrogen (TN) of 70, 11.3 and 39 (all in mg/L), respectively, were obtained. TN removal in UASB, A/O and ANR were 24.6%, 49.6% and 16.1%, respectively. According to the water quality and molecular biology analysis, a high degree of anammox besides short-cut nitrification and denitrification occurred in A/O. Counting for 16.1% of TN removal in ANR, at least 43.2-49% of TN was removed via anammox. The anammox bacteria in A/O and ANR, were in respective titers of (2.5-5.9)×10(9) and 2.01×10(10)copy numbers/(gSS).
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Affiliation(s)
- Li-Na Wu
- Beijing Institute of Petrochemical Technology, Beijing 102617, China; State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Da-Wei Liang
- Beijing Key Laboratory of Bioinspired Energy Materials and Devices, Beihang University, Beijing 100191, China
| | - Ying-Ying Xu
- Beijing Institute of Petrochemical Technology, Beijing 102617, China
| | - Ting Liu
- Beijing Institute of Petrochemical Technology, Beijing 102617, China
| | - Yong-Zhen Peng
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
| | - Jie Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
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Sun F, Su X, Kang T, Wu S, Yuan M, Zhu J, Zhang X, Xu F, Wu W. Integrating landfill bioreactors, partial nitritation and anammox process for methane recovery and nitrogen removal from leachate. Sci Rep 2016; 6:27744. [PMID: 27279481 PMCID: PMC4899737 DOI: 10.1038/srep27744] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 05/24/2016] [Indexed: 11/30/2022] Open
Abstract
A new process consisting of a landfill bioreactor, partial-nitritation (PN) and the anammox process has been developed for landfill leachate treatment. In this study, the landfill bioreactor exhibited excellent performance in methane-rich biogas recovery, with a specific biogas yield of 0.47 L gas g−1 COD and methane percentages of 53–76%. PN was achieved in the aerobic reactor by high free ammonia (101 ± 83 mg NH3 L−1) inhibition for nitrite-oxidizing bacteria, and the desired PN effluent composition (effluent nitrite: ammonium ratio of 1.1 ± 0.3) was controlled by adjusting the alkalinity concentration per unit of ammonium oxidized to approximately 14.3 mg CaCO3 mg−1 N in the influent. The startup of anammox process was successfully achieved with a membrane bioreactor in 160 d, and a maximum nitrogen removal rate of 216 mg N L−1 d−1 was attained for real landfill leachate treatment. The quantitative polymerase chain reaction results confirmed that the cell-specific anammox activity was approximately 68–95 fmol N cell−1 d−1, which finally led to the stable operation of the system.
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Affiliation(s)
- Faqian Sun
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou 310058, China
| | - Xiaomei Su
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou 310058, China
| | - Tingting Kang
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou 310058, China
| | - Songwei Wu
- Quzhou Environmental Sanitation Department, Quzhou 324000, China
| | - Mengdong Yuan
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou 310058, China
| | - Jing Zhu
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou 310058, China
| | - Xiayun Zhang
- Zhejiang Institute of Microbiology, Hangzhou 310012, China
| | - Fang Xu
- Zhejiang Institute of Microbiology, Hangzhou 310012, China
| | - Weixiang Wu
- Institute of Environmental Science and Technology, Zhejiang University, Hangzhou 310058, China
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Wang W, Ding Y, Ullman JL, Ambrose RF, Wang Y, Song X, Zhao Z. Nitrogen removal performance in planted and unplanted horizontal subsurface flow constructed wetlands treating different influent COD/N ratios. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:9012-9018. [PMID: 26822218 DOI: 10.1007/s11356-016-6115-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 01/12/2016] [Indexed: 06/05/2023]
Abstract
Microcosm horizontal subsurface flow constructed wetlands (HSSFCWs) were used to examine the impacts of vegetation on nitrogen dynamics treating different influent COD/N ratios (1:1, 4:1, and 8:1). An increase in the COD/N ratio led to increased reductions in NO3 and total inorganic nitrogen (TIN) in planted and unplanted wetlands, but diminished removal of NH4. The HSSFCW planted with Canna indica L. exhibited a significant reduction in NH4 compared to the unplanted system, particularly in the active root zone where NH4 removal performance increased by up to 26 % at the COD/N ratio of 8:1. There was no significant difference in NO3 removal between the planted and unplanted wetlands. TIN removal efficiency in the planted wetland increased with COD/N ratios, which was likely influenced by plant uptake. NH4 reductions were greater in planted wetland at the 20- and 40-cm depths while NO3 reductions were uniformly greater with depth in all cases, but no statistical difference was impacted by depth on TIN removal. These findings show that planting a HSSFCW can provide some benefit in reducing nitrogen loads in effluents, but only when a sufficient carbon source is present.
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Affiliation(s)
- Wei Wang
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, People's Republic of China
- Department of Environmental Health Sciences, University of California, Los Angeles, Los Angeles, CA, 90095-1771, USA
| | - Yi Ding
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, People's Republic of China
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Jeffrey L Ullman
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Richard F Ambrose
- Department of Environmental Health Sciences, University of California, Los Angeles, Los Angeles, CA, 90095-1771, USA
- Institute of the Environment and Sustainability, University of California, Los Angeles, Los Angeles, CA, 90095-1771, USA
| | - Yuhui Wang
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, People's Republic of China
| | - Xinshan Song
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, People's Republic of China.
| | - Zhimiao Zhao
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, People's Republic of China
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Wu L, Zhang L, Shi X, Liu T, Peng Y, Zhang J. Analysis of the impact of reflux ratio on coupled partial nitrification-anammox for co-treatment of mature landfill leachate and domestic wastewater. BIORESOURCE TECHNOLOGY 2015; 198:207-214. [PMID: 26386424 DOI: 10.1016/j.biortech.2015.08.072] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 08/12/2015] [Accepted: 08/15/2015] [Indexed: 06/05/2023]
Abstract
A combined system of anaerobic-aerobic techniques was used for deep co-treatment of mature landfill leachate and domestic sewage, mixed at a ratio of 1:5, through partial nitrification-anammox. While ensuring synchronous removal of organic matter and nitrogen, we investigated changes in several factors under different reflux ratios (0%, 100% and 300%). High nitrification efficiency and a relatively high accumulation rate of NO2(-)-N were achieved, the latter through selective inhibition of bacteria by free ammonia. The results indicated that maintaining the reflux ratio within an optimum range contributes to the enrichment of anammox bacteria. In this study, the optimum ratio, which permitted the highest removal rates of chemical oxygen demand (COD), NH4(+)-N, and total nitrogen, was 300%. The COD level in the anammox reactor (ANAOR) decreased to lower than 70 mg/L, resulting in no inhibitory effect on anammox and maximum enrichment of bacteria.
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Affiliation(s)
- Lina Wu
- Beijing Institute of Petrochemical Technology, Beijing 102617, China; State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Lieyu Zhang
- Laboratory of Water Systems Engineering, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xiao Shi
- Beijing Institute of Petrochemical Technology, Beijing 102617, China
| | - Ting Liu
- Beijing Institute of Petrochemical Technology, Beijing 102617, China
| | - Yongzhen Peng
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
| | - Jie Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
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14
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Areal Distribution of Ammonium Contamination of Soil-Water Environment in the Vicinity of Old Municipal Landfill Site with Vertical Barrier. WATER 2015. [DOI: 10.3390/w7062656] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Talalaj IA. Removal of nitrogen compounds from landfill leachate using reverse osmosis with leachate stabilization in a buffer tank. ENVIRONMENTAL TECHNOLOGY 2015; 36:1091-1097. [PMID: 25383650 DOI: 10.1080/09593330.2014.982207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this paper, a removal of nitrogen compounds from a landfill leachate during reverse osmosis (RO) was evaluated. The treatment facility consists of a buffer tank and a RO system. The removal rate of N─NH4, [Formula: see text] and [Formula: see text] in the buffer tank reached 14%, 91% and 41%, respectively. The relatively low concentration of organic carbon limits N─NH4 oxidation in the buffer tank. The removal rate for the total organic nitrogen (TON) was 47%. The removal rate in RO was 99% for [Formula: see text], 84.1% for [Formula: see text] and 41% for [Formula: see text]. The accumulation of [Formula: see text] may be the result of a low pH, which before the RO process is reduced to a value of 6.0-6.5. Besides it, the cause for a low removal rate of the [Formula: see text] in the buffer tank and during RO may be free ammonia, which can inhibit the [Formula: see text] oxidation. The removal rates of total inorganic nitrogen and TON in the RO treatment facility were similar being 99% and 98.5%, respectively.
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Affiliation(s)
- Izabela Anna Talalaj
- a Department of Environmental Engineering Systems , Bialystok University of Technology , Wiejska 45A Street 15-351 Bialystok , Poland
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16
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Kim SS. Effective partial nitrification and denitrification via nitrite with inhibitor removal basin for high strength ammonium wastewater treatment. KOREAN J CHEM ENG 2014. [DOI: 10.1007/s11814-014-0208-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Fudala-Ksiazek S, Luczkiewicz A, Fitobor K, Olanczuk-Neyman K. Nitrogen removal via the nitrite pathway during wastewater co-treatment with ammonia-rich landfill leachates in a sequencing batch reactor. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:7307-7318. [PMID: 24569868 PMCID: PMC4053604 DOI: 10.1007/s11356-014-2641-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 02/10/2014] [Indexed: 05/30/2023]
Abstract
The biological treatment of ammonia-rich landfill leachates due to an inadequate C to N ratio requires expensive supplementation of carbon from an external carbon source. In an effort to reduce treatment costs, the objective of the study was to determine the feasibility of nitrogen removal via the nitrite pathway during landfill leachate co-treatment with municipal wastewater. Initially, the laboratory-scale sequencing batch reactor (SBR) was inoculated with nitrifying activated sludge and fed only raw municipal wastewater (RWW) during a start-up period of 9 weeks. Then, in the co-treatment period, consisting of the next 17 weeks, the system was fed a mixture of RWW and an increasing quantity of landfill leachates (from 1 to 10% by volume). The results indicate that landfill leachate addition of up to 10% (by volume) influenced the effluent quality, except for BOD5. During the experiment, a positive correlation (r(2) = 0.908) between ammonia load in the influent and nitrite in the effluent was observed, suggesting that the second step of nitrification was partially inhibited. The partial nitrification (PN) was also confirmed by fluorescence in situ hybridisation (FISH) analysis of nitrifying bacteria. Nitrogen removal via the nitrite pathway was observed when the oxygen concentration ranged from 0.5 to 1.5 mg O2/dm(3) and free ammonia (FA) ranged from 2.01 to 35.86 mg N-NH3/dm(3) in the aerobic phase. Increasing ammonia load in wastewater influent was also correlated with an increasing amount of total nitrogen (TN) in the effluent, which suggested insufficient amounts of assimilable organic carbon to complete denitrification. Because nitrogen removal via the nitrite pathway is beneficial for carbon-limited and highly ammonia-loaded mixtures, obtaining PN can lead to a reduction in the external carbon source needed to support denitrification.
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Affiliation(s)
- S. Fudala-Ksiazek
- Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdansk, Poland
| | - A. Luczkiewicz
- Department of Water and Wastewater Technology, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdansk, Poland
| | - K. Fitobor
- Department of Water and Wastewater Technology, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdansk, Poland
| | - K. Olanczuk-Neyman
- Department of Water and Wastewater Technology, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gabriela Narutowicza Str. 11/12, 80-233 Gdansk, Poland
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18
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Zhao Q, Han H, Xu C, Zhuang H, Fang F, Zhang L. Effect of powdered activated carbon technology on short-cut nitrogen removal for coal gasification wastewater. BIORESOURCE TECHNOLOGY 2013; 142:179-185. [PMID: 23735800 DOI: 10.1016/j.biortech.2013.04.051] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 04/13/2013] [Accepted: 04/14/2013] [Indexed: 06/02/2023]
Abstract
A combined process consisting of a powdered activated carbon technology (PACT) and short-cut biological nitrogen removal reactor (SBNR) was developed to enhance the removal efficiency of the total nitrogen (TN) from the effluent of an upflow anaerobic sludge bed (UASB) reactor, which was used to treat coal gasification wastewater (CGW). The SBNR performance was improved with the increasing of COD and TP removal efficiency via PACT. The average removal efficiencies of COD and TP in PACT were respectively 85.80% and 90.30%. Meanwhile, the NH3-N to NO2-N conversion rate was achieved 86.89% in SBNR and the total nitrogen (TN) removal efficiency was 75.54%. In contrast, the AOB in SBNR was significantly inhibited without PACT or with poor performance of PACT in advance, which rendered the removal of TN. Furthermore, PAC was demonstrated to remove some refractory compounds, which therefore improved the biodegradability of the coal gasification wastewater.
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Affiliation(s)
- Qian Zhao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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19
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Wang K, Wang S, Zhu R, Miao L, Peng Y. Advanced nitrogen removal from landfill leachate without addition of external carbon using a novel system coupling ASBR and modified SBR. BIORESOURCE TECHNOLOGY 2013; 134:212-218. [PMID: 23500577 DOI: 10.1016/j.biortech.2013.02.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 01/31/2013] [Accepted: 02/04/2013] [Indexed: 06/01/2023]
Abstract
In order to achieve advanced nitrogen removal from landfill leachate without the addition of external carbon sources, a novel system coupling an anaerobic sequencing batch reactor (ASBR) and sequencing batch reactor (SBR) was proposed for the treatment of real landfill leachate with NH4+-N and chemical oxygen demand (COD) concentrations of 1100 mg/L and 6000 mg/L, respectively. ASBR could remove 80% of the influent COD under a volumetric loading rate of 5 kg COD/(m3d). Denitritation and simultaneous nitritation-denitritation were responsible for 50% of the TN removal in SBR under alternate anoxic/aerobic modes. Furthermore, advanced nitrogen removal was realized with a total inorganic nitrogen (TIN) removal efficiency of 99% at the expense of endogenous denitritation during a 26 h period, which led to effluent COD and TN values of 550-650 mg/L and 15-25 mgN/L, respectively. For the combined system, removal efficiencies of COD and total nitrogen (TN) were above 90% and 95%, respectively.
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Affiliation(s)
- Kai Wang
- Engineering Research Center of Beijing, Beijing University of Technology, Beijing, China
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