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Filtration capability and operational characteristics of dynamic membrane bioreactor for municipal wastewater treatment

机译：动态膜生物反应器处理城市污水的过滤能力和运行特性

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This paper introduced an approach that used an industrial fIlter-cloth material instead of the conventional MF/UF membrane to build a membrane bioreactor (MBR) for wastewater treatment.The formation and filtration capacity of the dynamic membrane and the performance of the dynamic MBR for treating municipal wastewater were investigated.The results of the batch tests showed that the dynamic membrane could be formed on the filter-cloth surface quickly and developed steadily.It played an essential role to reject particulate matter.Higher sludge concentration could contribute to the formation of dynamic membrane,but lead to elevated SS concentration in the effluent and lower permeation flux.For treating municipal wastewater sequentially,in the permeate turbidity was less than 9 NTU and SS was zero at the most operation time under the MLSS concentration of less than 6000 mgL~(-1).At hydraulic retention time (HRT) of 6.9h and temperatures of 9-13deg C,the total COD and ammonia removal ranged 72-89% and 66-94%,respectively.The total resistance of the dynamic membrane was lower than that of the MF/UF membrane 2-3 numeral classes.Cake layer resistance was the major resistance.
机译：本文介绍了一种使用工业滤布材料代替传统的MF / UF膜来构建膜生物反应器（MBR）来处理废水的方法。动态膜的形成和过滤能力以及动态MBR的性能批处理试验的结果表明，动态滤膜可以在滤布表面快速形成并稳定地发展，它在排除颗粒物方面起着至关重要的作用，较高的污泥浓度可以促进滤膜的形成。动态膜，但会导致污水中SS浓度升高而渗透通量降低。对于顺序处理城市废水，在MLSS浓度小于6000 mgL的情况下，大多数操作时间的渗透率浊度小于9 NTU，SS为零。 〜（-1）。在水力停留时间（HRT）为6.9h和温度为9-13°C时，总COD和氨去除量为动态膜的总电阻分别低于2-3个数字级别的MF / UF膜的总电阻。

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