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Research on Operation Efficiency and Membrane Fouling of A(2)/O-MBR in Reclaimed Water Treatment

Taking the public building domestic wastewater as an example, the combination of the MBR (membrane bioreactor) process and the traditional A(2)/O (anaerobic-anoxic-oxic) process was established and analyzed in terms of the removal effect of the pollutants, the impact of the microbial community chang...

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Autores principales: Li, Fenfen, An, Xinyue, Feng, Cuimin, Kang, Jianwei, Wang, Junling, Yu, Hongying
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6950661/
https://www.ncbi.nlm.nih.gov/pubmed/31861172
http://dx.doi.org/10.3390/membranes9120172
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author Li, Fenfen
An, Xinyue
Feng, Cuimin
Kang, Jianwei
Wang, Junling
Yu, Hongying
author_facet Li, Fenfen
An, Xinyue
Feng, Cuimin
Kang, Jianwei
Wang, Junling
Yu, Hongying
author_sort Li, Fenfen
collection PubMed
description Taking the public building domestic wastewater as an example, the combination of the MBR (membrane bioreactor) process and the traditional A(2)/O (anaerobic-anoxic-oxic) process was established and analyzed in terms of the removal effect of the pollutants, the impact of the microbial community changes on the process, the MBR membrane fouling, the cleaning methods, and the cleaning performance. The results indicated that the effluent water quality of the domestic wastewater treated with the A(2)/O-MBR process was stable and met the emission requirement to the natural water body. There was good microbial diversity in raw water, the anaerobic tank, the anoxic tank, the aerobic MBR tank and the disinfection tank, and the aerobic MBR tank has a wide variety of aerobic microorganisms, which elevates the removal of organics and the nitrification of ammonia nitrogen and ensures the qualification of nitrogen and phosphorus indexes of the system effluent water. For the fouled membrane, the surface of the contaminated membrane was covered by macromolecular contaminants, causing the membrane flux to drop, and after different cleaning methods to the membrane were compared, it was discovered that the combined use of cleaning agents had better effects than the single ones, and the cleaning method of sodium hydroxide followed by hydrochloric acid showed the best effect, achieving a membrane flux restoration ratio above 80% after cleaning.
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spelling pubmed-69506612020-01-16 Research on Operation Efficiency and Membrane Fouling of A(2)/O-MBR in Reclaimed Water Treatment Li, Fenfen An, Xinyue Feng, Cuimin Kang, Jianwei Wang, Junling Yu, Hongying Membranes (Basel) Article Taking the public building domestic wastewater as an example, the combination of the MBR (membrane bioreactor) process and the traditional A(2)/O (anaerobic-anoxic-oxic) process was established and analyzed in terms of the removal effect of the pollutants, the impact of the microbial community changes on the process, the MBR membrane fouling, the cleaning methods, and the cleaning performance. The results indicated that the effluent water quality of the domestic wastewater treated with the A(2)/O-MBR process was stable and met the emission requirement to the natural water body. There was good microbial diversity in raw water, the anaerobic tank, the anoxic tank, the aerobic MBR tank and the disinfection tank, and the aerobic MBR tank has a wide variety of aerobic microorganisms, which elevates the removal of organics and the nitrification of ammonia nitrogen and ensures the qualification of nitrogen and phosphorus indexes of the system effluent water. For the fouled membrane, the surface of the contaminated membrane was covered by macromolecular contaminants, causing the membrane flux to drop, and after different cleaning methods to the membrane were compared, it was discovered that the combined use of cleaning agents had better effects than the single ones, and the cleaning method of sodium hydroxide followed by hydrochloric acid showed the best effect, achieving a membrane flux restoration ratio above 80% after cleaning. MDPI 2019-12-17 /pmc/articles/PMC6950661/ /pubmed/31861172 http://dx.doi.org/10.3390/membranes9120172 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Fenfen
An, Xinyue
Feng, Cuimin
Kang, Jianwei
Wang, Junling
Yu, Hongying
Research on Operation Efficiency and Membrane Fouling of A(2)/O-MBR in Reclaimed Water Treatment
title Research on Operation Efficiency and Membrane Fouling of A(2)/O-MBR in Reclaimed Water Treatment
title_full Research on Operation Efficiency and Membrane Fouling of A(2)/O-MBR in Reclaimed Water Treatment
title_fullStr Research on Operation Efficiency and Membrane Fouling of A(2)/O-MBR in Reclaimed Water Treatment
title_full_unstemmed Research on Operation Efficiency and Membrane Fouling of A(2)/O-MBR in Reclaimed Water Treatment
title_short Research on Operation Efficiency and Membrane Fouling of A(2)/O-MBR in Reclaimed Water Treatment
title_sort research on operation efficiency and membrane fouling of a(2)/o-mbr in reclaimed water treatment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6950661/
https://www.ncbi.nlm.nih.gov/pubmed/31861172
http://dx.doi.org/10.3390/membranes9120172
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