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Research article - Peer-reviewed, 2020

High rate anaerobic digestion of swine wastewater in an anaerobic membrane bioreactor

Jiang, Mengmeng; Westerholm, Maria; Qiao, Wei; Wandera, Simon M.; Dong, Renjie


Efficient treatment of swine wastewater at a high rate would facilitate the development of a sustainable pig industry. In this study, to investigate methane fermentation and membrane filtration performance, an anaerobic membrane bioreactor was operated under mesophilic conditions for 207 days during four stages, with a hydraulic retention time (HRT) decreasing from 5 to 3, 2, and 1 day, and a changing of solid retention time/hydraulic retention time (SRT/HRT) ratio from 18,18 to 8 and 3.2. The results showed that a higher volumetric methane production of 1.63 L/(L.d) and a lower VFAs concentration (<200 mg/L at stable stage) could achieved when the HRT was 1 day and SRT/HRT ratio was only 3.2. The specific methanogenic activity slightly decreased under the shorter HRT, and with SRT/HRT shortening, hydro-genotrophic Methanocorpusculum tended to dominate in bulk sludge while acetoclastic Methanosaeta dominated in the biofilm. Membrane fouling was observed after 4 months with a flux decline and a significant increase in trans-membrane pressure. A serial cleaning test indicated that organic pollutants contributed highly to the membrane fouling. (C) 2019 Published by Elsevier Ltd.


AnMBR; Swine wastewater; Hydraulic retention time; Methanogenesis; Membrane fouling

Published in

2020, volume: 193, article number: 116783

Authors' information

Jiang, Mengmeng
China Agr Univ
Swedish University of Agricultural Sciences, Department of Molecular Sciences
Qiao, Wei
China Agr Univ
Wandera, Simon M.
China Agr Univ
Dong, Renjie
China Agr Univ

Associated SLU-program

Food Waste

Sustainable Development Goals

SDG6 Clean water
SDG12 Ensure sustainable consumption and production patterns

UKÄ Subject classification

Water Treatment

Publication Identifiers


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