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Palli L, Tuci F, Franca LML, Fibbi D, Gori R. Revamping of a Full-Scale Membrane Plant for Landfill Leachate Pretreatment Using Partial Nitritation. MEMBRANES 2024; 14:115. [PMID: 38786949 PMCID: PMC11122965 DOI: 10.3390/membranes14050115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/06/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024]
Abstract
This paper describes a case study involving a revamping of a full-scale membrane bioreactor that treats landfill leachate and other liquid wastes. The main change was the introduction of nitritation/denitritation in alternating cycles instead of the classic denitrification/nitrification process, together with the installation of fine bubble diffusers, a reduction in the volume of the biological compartment, and an increase in the equalization volume. The most significant results were obtained for the biological compartment, with a decrease in the specific energy consumption of 46.6%. At the same time, the removal efficiency of COD, BOD, and TN substantially remained the same before and after plant revamping, while the removal efficiency of TP increased over the years, reaching an average value of almost 71%. Regarding the ultrafiltration unit, the specific flux (or permeability) was characterized by an increasing trend. At the same time, the specific energy consumption of this section decreased by 9.4%. These results led to the conclusion that the changes introduced with the revamp led to a more stable process, a reduction in membrane fouling, and important energy savings.
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Affiliation(s)
- Laura Palli
- Gestione Impianti Depurazione Acque Spa, Via di Baciacavallo 36, 59100 Prato, Italy
| | - Francesca Tuci
- Department of Civil and Environmental Engineering, University of Florence, Via S. Marta 3, 50139 Florence, Italy
| | | | - Donatella Fibbi
- Gestione Impianti Depurazione Acque Spa, Via di Baciacavallo 36, 59100 Prato, Italy
| | - Riccardo Gori
- Department of Civil and Environmental Engineering, University of Florence, Via S. Marta 3, 50139 Florence, Italy
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Ilmasari D, Sahabudin E, Riyadi FA, Abdullah N, Yuzir A. Future trends and patterns in leachate biological treatment research from a bibliometric perspective. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 318:115594. [PMID: 35759967 DOI: 10.1016/j.jenvman.2022.115594] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 06/10/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
Leachate has become a great deal of concern due to its complex properties which are primarily caused by the high concentrations of organics and ammonia. Thus, proper leachate treatment is required prior to its discharge. Leachate can be treated in various ways, and biological treatment is one of the approaches. This treatment has been shown to be both effective and cost-efficient while offering the possibility of resource recovery in the form of bioenergy. In this study, the underlying patterns in publications related to leachate biological treatment were uncovered through bibliometric analysis. This study also lays the groundwork for a deeper understanding of the past, current, and future trends of the leachate biological treatment. Research publications from 1974 to 2021 were retrieved from the Scopus database, and it was identified that 2013 articles were published in the span of 47 years. From the analyzed publications, China played a leading role in publishing leachate biological treatment research articles as well as having the most productive institutions and authors. Meanwhile, the USA was found to be the most active country in initiating international collaborations with 33 countries. The research hotspots were also successfully identified using keyword co-occurrences analysis. Anaerobic digestion and constructed wetland were revealed to be the research hotspots. The critical role of biological treatment in removing nitrogen from leachate was also highlighted. Besides, numerous research gaps were identified in the application of aerobic granular sludge (AGS) for leachate treatment. This can be a potential area for research in the future. Finally, future research should be encouraged to focus on the use of sustainable treatment systems in which energy recovery in the form of biogases is promoted.
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Affiliation(s)
- Dhaneswara Ilmasari
- Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Eri Sahabudin
- Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Fatimah Azizah Riyadi
- Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Norhayati Abdullah
- Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia; UTM International, Aras 8 Menara Razak, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Ali Yuzir
- Department of Chemical and Environmental Engineering (ChEE), Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia.
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Design and annual operation of full scale landfill leachate plant in Iran: focus on multistage membrane technology. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02108-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ittisupornrat S, Phetrak A, Theepharaksapan S, Mhuantong W, Tobino T. Effect of prolonged sludge retention times on the performance of membrane bioreactor and microbial community for leachate treatment under restricted aeration. CHEMOSPHERE 2021; 284:131153. [PMID: 34214930 DOI: 10.1016/j.chemosphere.2021.131153] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 04/08/2021] [Accepted: 06/05/2021] [Indexed: 06/13/2023]
Abstract
Leachate treatment is challenging owing to the complex composition of pollutants. This study investigated the treatment performance of a membrane bioreactor (MBR) and the microbial community structure corresponding to the effect of prolonged sludge retention times (SRTs) under restricted aeration. In the present study, a pilot-scale MBR was designed to treat leachate after being pretreated with an anaerobic filter for continuous operation for 240 days. The experimental results showed that removal performance of over 90% was achieved for biochemical oxygen demand, total Kjeldahl nitrogen, ammonia-nitrogen, and suspended solids when the MBR was operated at SRTs of 150-300 days. The results on microbial communities revealed that Proteobacteria, Bacteroidetes, Firmicutes, Planctomycetes, Chloroflexi, and Actinobacteria were the major phyla. Furthermore, ammonia-oxidizing bacteria belonging to Nitrosomonadaceae were considered to play a vital role in the ammonia-nitrogen removal. A high abundance of Rhizobiales was detected on the biofilm of the membrane, which could be the key driver of bio-fouling. The dynamic changes in the microbial community indicate steady performance of MBR and can act as an indicator of membrane bio-fouling. The results of our study highlight that MBR can be viably operated in long SRTs under restricted aeration for leachate treatment with technical, economic, and environmental feasibility for resource recovery.
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Affiliation(s)
- Suda Ittisupornrat
- Environmental Research and Training Centre, Department of Environmental Quality Promotion, Pathum thani, Thailand
| | - Athit Phetrak
- Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
| | - Suthida Theepharaksapan
- Department of Civil and Environmental Engineering, Faculty of Engineering, Srinakharinwirot University, Nakhon Nayok, Thailand
| | - Wuttichai Mhuantong
- Enzyme Technology Research Team, Biorefinery and Bioproduct Technology Research Group, National Center for Genetic Engineering and Biotechnology (BIOTEC), Pathum thani, Thailand
| | - Tomohiro Tobino
- Department of Urban Engineering, The University of Tokyo, Tokyo, Japan
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Lebron YAR, Moreira VR, Brasil YL, Silva AFR, Santos LVDS, Lange LC, Amaral MCS. A survey on experiences in leachate treatment: Common practices, differences worldwide and future perspectives. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 288:112475. [PMID: 33823445 DOI: 10.1016/j.jenvman.2021.112475] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/12/2021] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
The necessity for landfill leachate treatment is a requisite to reduce the environmental impact related to municipal solid waste landfills and different aspects must be considered while deciding for an appropriate treatment process. For example, it was demonstrated that the landfill leachate stabilization in tropical regions is achieved right after its first year of operation, requiring technologies capable of treating leachates of a higher recalcitrant character if compared to those leachates from temperate regions and same landfill age. In view of its complexity and variability, stand-alone processes (either biological or physicochemical) are often ineffective in attaining the threshold values for its discharge in receiving bodies. Due to that fact, full-scale facilities have adopted integrated routes, harvesting the benefits of both biological and physicochemical processes. The implementation of membrane bioreactors followed by polishing membrane separation process (nanofiltration and reverse osmosis) seems to be a trend in leachate treatment by full-scale treatment plants. This technology is widely employed in China, European countries, and tropical countries as Brazil, generally with a treatment cost lower than the costs related to its disposal in domestic effluent collection systems. From the technologies already employed by full-scale facilities, four integrated routes were proposed for a sensitive analysis considering the treatment of a landfill leachate of different physicochemical characteristics. From all routes, those employing the membrane separation process as a polishing step had a better efficacy in attaining the threshold values for leachate disposal, being that an interesting alternative for leachate polishing by full-scale facilities.
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Affiliation(s)
- Yuri Abner Rocha Lebron
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil.
| | - Victor Rezende Moreira
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil.
| | - Yara Luiza Brasil
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil
| | - Ana Flávia Rezende Silva
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil
| | - Lucilaine Valéria de Souza Santos
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil
| | - Liséte Celina Lange
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil
| | - Míriam Cristina Santos Amaral
- Department of Sanitation and Environmental Engineering, School of Engineering, Federal University of Minas Gerais, Avenue Antônio Carlos, 6627, Campus Pampulha, MG, Brazil
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Zhang J, Xiao K, Huang X. Full-scale MBR applications for leachate treatment in China: Practical, technical, and economic features. JOURNAL OF HAZARDOUS MATERIALS 2020; 389:122138. [PMID: 32006937 DOI: 10.1016/j.jhazmat.2020.122138] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/17/2020] [Accepted: 01/18/2020] [Indexed: 06/10/2023]
Abstract
Though having been applied for decades in the leachate treatment, membrane bioreactors (MBRs) have not attracted as much attention as their application in the municipal wastewater treatment. A timely survey for full-scale applications of MBRs treating leachate would be necessary to present a thorough knowledge and implication in this field. In this study, 175 full-scale MBRs treating leachate (with individual treatment capacity of ≥100 m3/d) in China were comprehensively analyzed. The accumulative treatment capacity exceeded 65,000 m3/d in 2018, and such projects were primarily distributed in areas with developed economy and large production of municipal solid waste. Sanitary landfill leachate owned 70 % of the leachate-treating MBRs' capacity, while the proportion for incineration plants increased gradually. Synchronously, leachate from incineration plants was more degradable than that from sanitary landfills. MBRs were advantageous to pollutant removal, fouling control, and successive energy mitigation of the whole treatment processes. The investment and footprint of processes adopting MBRs were medially ∼90,000 CNY/(m3/d) and ∼15 m2/(m3/d) respectively, and the energy consumption was 20-30 kW h/m3. The technical and economical applicability and environmental policy forces would strengthen a predictable increment of market share of MBRs in leachate treatment field in the future.
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Affiliation(s)
- Jiao Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Kang Xiao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Xia Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China; Research and Application Center for Membrane Technology, School of Environment, Tsinghua University, Beijing 100084, PR China.
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Cu-BTC Metal−Organic Framework Modified Membranes for Landfill Leachate Treatment. WATER 2019. [DOI: 10.3390/w12010091] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, Cu-BTC (copper(II) benzene-1,3,5-tricarboxylate) metal-organic frameworks (MOFs) were incorporated into the structure of polysulfone (PSf) ultrafiltration (UF) membranes to improve the membrane performance for landfill leachate treatment, whereby different concentrations of Cu-BTC (0.5, 1, 1.5, 2 wt%) were added to the PSf casting solution. The successful incorporation of Cu-BTC MOFs into the modified membranes was investigated by field emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray (EDX). The Cu-BTC-modified PSf membranes showed higher performance in terms of flux and rejection, as compared to the neat PSf membrane. For example, the pure water flux (PWF) of neat membrane increased from 111 to 194 L/m2h (LMH) by loading 2 wt% Cu-BTC into the membrane structure, indicating 74% improvement in PWF. Furthermore, the flux of this membrane during filtration of landfill leachate increased up to 15 LMH, which indicated 50% improvement in permeability, as compared to the neat membrane. Finally, the modified membranes showed reasonable antifouling and anti-biofouling properties than the blank membrane.
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Coppini E, Palli L, Antal A, Del Bubba M, Miceli E, Fani R, Fibbi D. Design and start-up of a constructed wetland as tertiary treatment for landfill leachates. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 79:145-155. [PMID: 30816871 DOI: 10.2166/wst.2019.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this paper, the design and start-up of a constructed wetland (CW) for the tertiary treatment of landfill leachates is presented. The flux is characterized by high salinity, high concentration of nitrogen (almost completely in the form of nitrate) and a biochemical oxygen demand (BOD)/chemical oxygen demand (COD) ratio close to zero. The CW pilot plant suffered from mechanical and hydraulic malfunctions which led to an uneven growth of plants inside the tanks. Despite this, COD has been reduced in the range of 0-30%, reduced forms of N (ammonia and nitrite) are also oxidized and removed by 50-80% and 20-26% on average. Considering the low number of plants and the loading rate, CW pilot plant allowed to remove more than 16 kg of COD, leading to a specific removal of 10 gCOD/d · m2. Moreover, bacterial communities associated to plants were isolated and analyzed in order to evaluate the influence of such communities on phytoremediation. Bulk soil registered the lowest bacterial titers, while plant compartments and rhizospheric soil showed to be more suitable for bacterial colonization. Twenty-five different bacterial genera were observed among the analyzed isolates, with the predominance of Pseudomonas genus.
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Affiliation(s)
| | - Laura Palli
- Department of Civil and Environmental Engineering, University of Florence, Via Santa Marta 3, Florence, Italy E-mail:
| | - Alexandra Antal
- Department of Chemistry 'Ugo Schiff', University of Florence, Via della Lastruccia, 3, Sesto Fiorentino, Italy
| | - Massimo Del Bubba
- Department of Chemistry 'Ugo Schiff', University of Florence, Via della Lastruccia, 3, Sesto Fiorentino, Italy
| | - Elisangela Miceli
- Department of Biology, University of Florence, Via Madonna del Piano, 6, Sesto Fiorentino, Italy
| | - Renato Fani
- Department of Biology, University of Florence, Via Madonna del Piano, 6, Sesto Fiorentino, Italy
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