首页> 外文会议>Membrane technology 2008 >VIRUS REMOVAL BY LOW PRESSURE MEMBRANES IN WASTEWATERTREATMENT: EFFECTS OF ION COMPOSITION AND EFFLUENT ORGANICMATTER
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VIRUS REMOVAL BY LOW PRESSURE MEMBRANES IN WASTEWATERTREATMENT: EFFECTS OF ION COMPOSITION AND EFFLUENT ORGANICMATTER

机译:低压膜去除废水中的病毒:离子组成和有效有机物的影响

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Low pressure membranes (LPMs) have been increasingly applied in the disinfection ofrnwastewater effluent. The efficiency of LPM in disinfection is affected by the quality of therneffluent, including ion composition and effluent organic matter (EfOM). In order to betterrnunderstand the two effects, two types of commercial LPMs with similar pore size rating werernchallenged with MS2 bacteriophage in this study at bench and pilot scales. It was found that ionrncomposition had different effects on the performance of LPMs with loose and tight porernstructures, probably as a result of different role of electrostatic repulsions between viruses andrnthe membranes. Meanwhile, the EfOM effect was related to the presence of a colloidal fractionrnlarger than other dissolved organics. Detailed mechanism for the EfOM effect has not beenrnidentified.rnThe results indicate that the performance of LPMs in wastewater disinfection may be stronglyrninfluenced by the effluent ion composition and EfOM properties and different from thatrndetermined in standard bench-scale challenge tests. This should be carefully considered in thernevaluation and selection of LPMs for full-scale applications.
机译:低压膜(LPM)已越来越多地用于废水的消毒。 LPM的消毒效率受废水质量的影响,包括离子组成和废水有机物(EfOM)。为了更好地理解这两种效果,本研究在基准规模和中试规模上将两种类型的孔径大小相似的商业LPM与MS2噬菌体结合。发现离子组成对具有松散且紧密的孔结构的LPMs的性能具有不同的影响,这可能是由于病毒和膜之间的静电排斥作用不同所致。同时,EfOM效应与胶体部分的存在有关,该胶体部分比其他溶解的有机物更大。 EfOM效应的详细机理尚未确定。结果表明,LPM在废水消毒中的性能可能受到流出物离子组成和EfOM特性的强烈影响,并且与标准工作台规模测试中确定的不同。在对LPM进行全面评估和重新选择时应仔细考虑这一点。

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