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TREATING WET WEATHER FLOWS IN A MEMBRANE BIOREACTOR

机译:处理膜生物反应器中的潮湿天气

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Membrane bioreactors (MBRs) are a compact biological wastewater treatment process thatrnemploy microfiltration (MF) or ultrafiltration (UF) membranes to perform the solids-liquidrnseparation. While using a membrane, instead of gravity sedimentation, for solid-quid separationrnhas significant advantages (e.g. compact footprint, high quality effluent, high MLSSrnconcentrations), there is one potential disadvantage of momentous significance; the ability of thernMBR to meet the hydraulic demands at all times. There is no benefit to having membrane treatedrnwater quality if basins and emergency storage tanks are overflowing and raw wastewater isrnpopping manhole covers. This paper will discuss a unique problem that occurs when treating wetrnweather flows with MBRs, sludge deflocculation. Possible reasons for the sludge deflocculationrnwill be explored and present day industry knowledge on the topic discussed.
机译:膜生物反应器(MBR)是一种紧凑的生物废水处理工艺,采用微滤(MF)或超滤(UF)膜进行固液分离。当使用膜代替重力沉降时,固液分离具有显着的优势(例如,占地面积小,废水质量高,MLSSrn浓度高),但存在潜在的重大影响。 ThernMBR始终满足液压需求的能力。如果水池和应急储水箱溢出,而未加工的废水则渗入井盖,那么用膜处理的水的质量就没有好处。本文将讨论用MBR处理湿润天气时发生的独特问题,即污泥解絮凝。将探讨污泥反絮凝的可能原因,并讨论有关该主题的当今行业知识。

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