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Fishery Modernization
2014,41
(5)
11-16+30
一体式膜生物反应器处理水产养殖废水膜污染特性研究
作 者：
翟雅男;范长健;李媛;海热提;王晓慧;石红;李盛盛
单 位：
舟山市环境保护局;北京化工大学
关键词：
一体式MBR;膜污染;优化;水产养殖废水
摘 要：
采用一体式膜生物反应器(MBR)处理水产养殖废水,对处理过程中MBR膜污染的特征进行研究。首先,选取污泥浓度(MLSS)、水力停留时间(HRT)和曝气量这3个与膜污染有密切关系的变量,通过组合优化,研究操作条件对膜污染的影响,并确定最佳操作条件;其次,在最优化参数组合情况下,通过长期稳定运行,确定膜压增长特点;最后,通过膜阻力分布分析,得出造成膜污染的最主要原因。结果显示,对膜污染的贡献依次为:曝气量>HRT>MLSS;最佳的操作参数组合为曝气量437.5 L/h,HRT 4.25 h,MLSS 2.2 g/L;长期稳定运行过程中,发现膜压增长呈现出快速增长、平稳增长、急剧增长的3个阶段;通过膜阻力分布分析,得出由胞外聚合物(EPS)和微生物代谢产物(SMP)形成的吸附性膜孔阻塞是造成膜污染的最主要原因。因此,优化操作条件和减少混合液中EPS和SMP是减轻膜污染的重要手段。
译 名：
Research on membrane fouling characteristics of the integrated MBR applied to aquacultural wastewater
作 者：
ZHAI Yanan;FAN Changjian;LI Yua;Haireti;WANG Xiaohui;SHI Hong;LI Shengsheng;Beijing University of Chemical Technology,Beijing Engineering Research Center of Environmental Material for Water Purification;China Highway Vehicle Machinery Co.,Ltd;Zhoushan Municipal Environmental Protection Bureau;
关键词：
integrated membrane bioreactor;;membrane fouling;;optimization;;aquacultural wastewater
摘 要：
In order to study on the characteristics of membrane fouling,the integrated membrane bioreactor(MBR) is applied to treat aquaculture wastewater.First,hydraulic retention time(HRT),aeration quantityand mixed liquid suspended solid(MLSS) which have close relationship with membrane fouling are chosen toresearch the influence of operating conditions on membrane fouling through combinatorial optimization and thenconfirm the optimal operational condition.Second,determine the growth characteristics of membrane pressurethrough a long-term stable operation with the optimal parameter combinations.Finally,analyze thecontributions of membrane resistance and then get the main cause of membrane fouling.The results show thatinfluence degree of the parameters is,in order,aeration quantity,HRT,MLSS.Under this experimentalcondition,437.5 L/ h for aeration quantity,4.25 h for HRT,2.2 g/ L for sludge concentration is the optimalparameters.With a long-term stable operation,it is found that the increase of membrane pressure presentsthree stages,including rapid growth,steady growth and sharp increase.By analysis distribution of themembrane resistance,absorption film pollution caused by extracellular polymeric substances(EPS) andsoluble microbial products(SMP) is the main reason for membrane fouling.Therefore,to reduce the influenceof EPS as well as SMP and to optimize operation conditions are essential.
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