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首页> 外文会议>Disinfection Conference 2013 >Removals of Enteric Viruses and Indicator Organisms in Membrane Bioreactor and Conventional Secondary Activated Sludge Wastewater Plants
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Removals of Enteric Viruses and Indicator Organisms in Membrane Bioreactor and Conventional Secondary Activated Sludge Wastewater Plants

机译：膜生物反应器和常规二级活性污泥废水处理厂中肠病毒和指示生物的去除

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Membrane bioreactors (MBRs) are a relatively new wastewater-treatment technology in which arncombination of suspended growth activated sludge biological treatment and membrane filtrationrnequipment is used to perform the critical solids/liquid separation function that is traditionallyrnaccomplished using secondary clarifiers and filters. Information is lacking on the effectiveness ofrnMBRs in removing human enteric viruses from wastewaters, particularly as compared tornremoval by conventional plants before and after disinfection. During three recreational seasonsrn(May–October), when disinfection of effluents is required in Ohio, removals of bacterialrnindicators, coliphage (indicator viruses which are not harmful to humans), and human entericrnviruses were studied throughout the treatment processes in three MBR and two conventionalrnsecondary activated sludge municipal wastewater treatment plants. Removals of all organismsrnwere higher across secondary treatment for MBR plants than for conventional plants andrnultraviolet disinfection after MBR secondary treatment provided little additional removal of anyrnorganism except for one type of coliphage. Reductions in capital cost, O&M cost, environmentalrnimpacts, and safety impacts are other considerations further supporting the argument that arndisinfection process unit after MBR secondary treatment provides little significance.
机译：膜生物反应器（MBRs）是一种相对较新的废水处理技术，其中悬浮生长的活性污泥生物处理和膜过滤设备的组合用于执行关键的固/液分离功能，而传统上是使用二级澄清器和过滤器完成的。缺少关于MBRs从废水中去除人肠病毒的有效性的信息，特别是与常规植物在消毒前后的去除效果相比。在三个娱乐季节（五月至十月），在俄亥俄州需要对废水进行消毒时，在三个MBR和两个常规的二级处理中，研究了在整个治疗过程中去除细菌指标，大肠菌群（对人类无害的指标病毒）和人肠病毒的过程。活性污泥市政污水处理厂。在MBR植物的二级处理中，所有生物的清除率均高于常规植物，在MBR二级处理后的紫外线消毒后，除一种类型的噬菌体外，几乎没有其他微生物清除。降低资本成本，运行维护成本，环境影响和安全影响的其他考虑因素进一步支持了这样的论点，即MBR二次处理后的消毒杀菌工艺单元意义不大。

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