Abstract：The present work focused on investigating the proliferation of biomass in a submerged membrane bioreactor (sMBR) and its influence on the performance of this reactor. A programmable logic controller (PLC) was used to control the process of the sMBR. After operating for 20~40d with no discharge of sludge, the concentration of biomass attained 9670mg/L, every indexes in the effluent achieved the optimal effect. However, as the proliferation of biomass, the apparent viscosity of sludge increased markedly, which led to decreasing of the F/M and difficulty in mass transfer, and inhibited the activity of sludge as well as deteriorated the quality of effluent. Results also indicated that the increasing trend between the apparent viscosity and MLSS, EPS were rather similar, which revealed that these two factors had a close relationship with the apparent viscosity of sludge. Additionally, a SEM/EDS method was used to observe the morphology of the membrane surface and analyze the elemental composition, the results indicated organic pollutants were the main components in the fouling layer of the membrane modules, and the inorganic components accounted for a less ratio.
梁文钟, 汤兵, 陈烜, 黄绍松, 付丰连, 宾丽英. 浸没式膜生物反应器中生物质的增殖及其对运行效能的影响[J]. 中国环境科学, 2013, 33(8): 1399-1406.
LIANG Wen-Zhong, TANG Bing, CHEN Hui, HUANG Shao-Song, FU Feng-Lian, BIN Li-Ying. Proliferation of biomass and its impact on the performance of a submerged membrane bioreactor. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(8): 1399-1406.
