期刊
BIORESOURCE TECHNOLOGY
卷 204, 期 -, 页码 177-184出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.01.005
关键词
Developing countries; Down-flow hanging sponge; Full-scale experiment; Municipal sewage; Nitrification
资金
- Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Japanese Ministry of Land, Infrastructure, Transport and Tourism (MLIT)
- Japan Society for the Promotion of Science (JSPS)
- Science and Technology Research Partnership for Sustainable Development (SATREPS)
- Grants-in-Aid for Scientific Research [15H05339] Funding Source: KAKEN
The first full-scale down-flow hanging sponge (DHS) reactor applied to post-treatment of effluent from an upflow anaerobic sludge blanket (UASB) reactor for the treatment of municipal sewage was evaluated, with emphasis on nitrification. The full-scale DHS reactor was successfully operated at a hydraulic retention time of 1.5 h for over 1800 days in India. The DHS reactor produced effluent with 6 mg L-1 ammonium nitrogen, corresponding to 79% removal efficiency. The total nitrogen removal by the DHS reactor was 65%. The high process performance of the DHS reactor was supported by its distinctive characteristics of (1) high dissolved oxygen of 5.4 mg L-1 in the DHS effluent without forced ventilation, (2) dense retained sludge in the range of 23-46 gVSS Lsponge(-1), and (3) adequate sludge activity of 52 mgN gVSS(-1) day(-1) for nitrification. The full-scale experiment has proven that the DHS reactor has practical applicability to developing countries. (C) 2016 Elsevier Ltd. All rights reserved.
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