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High rate anaerobic...
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Westerholm, MariaSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för Molekylära vetenskaper,Department of Molecular Sciences
(författare)
High rate anaerobic digestion of swine wastewater in an anaerobic membrane bioreactor
- Artikel/kapitelEngelska2020
Förlag, utgivningsår, omfång ...
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Elsevier BV,2020
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Elsevier,2024
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LIBRIS-ID:oai:slubar.slu.se:104925
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https://res.slu.se/id/publ/104925URI
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https://doi.org/10.1016/j.energy.2019.116783DOI
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Språk:engelska
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Sammanfattning på:engelska
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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.
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Sveriges lantbruksuniversitetInstitutionen för Molekylära vetenskaper
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Sveriges lantbruksuniversitet
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Ingår i:Energy: Elsevier BV193, s. 677-6870360-54421873-6785
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Energy
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