期刊
BIORESOURCE TECHNOLOGY
卷 130, 期 -, 页码 136-143出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.11.151
关键词
Membrane bioreactor; Heterotrophic microorganism activity; Biomass respiration potential; Dehydrogenase activity; Membrane adsorption bioreactor
资金
- National Natural Science Foundation of China [51138008]
- State Key Laboratory of Urban Water Resource and Environment [2010DX01]
- Funds for Creative Research Groups of China [51121062]
- Cooperative Project of Chinese Academy of Science-Foshan [2011BY100291]
In order to quantify the activity of heterotrophic microorganism in membrane bioreactor (MBR) for drinking water treatment, biomass respiration potential (BRP) test and 2,3,5-triphenyl tetrazolium chloride-dehydrogenase activity (TTC-DHA) test were introduced and modified. A sludge concentration ratio of 5:1, incubation time of 2 h, an incubation temperature that was close to the real operational temperature, and using a mixture of main AOC components as the substrate were adopted as the optimum parameters for determination of DHA in drinking water MBR. A remarkable consistency among BDOC removal, BRP and DHA for assessing biological performance in different MBRs was achieved. Moreover, a significant correlation between the BRP and DHA results of different MBRs was obtained. However, the TTC-DHA test was expected to be inaccurate for quantifying the biomass activity in membrane adsorption bioreactor (MABR), while the BRP test turned out to be still feasible in that case. (C) 2012 Elsevier Ltd. All rights reserved.
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