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1、INDUSTRIALWATER＆WASTEWATER工业用水与废水Vol．44No．2Apr.，2013不同回用途径的城市污水深度处理工艺选择张翠平，刘巨波（河北工程大学城市建设学院，河北邯郸056038）摘要：以某污水厂二级出水为研究对象，采用不同深度处理工艺，分析各工艺出水水质保障率以确定不同回用途径的城市污水所适宜的深度处理工艺。研究结果表明：混凝-沉淀-过滤和混凝-沉淀-粗砂滤-活性炭工艺出水回用作城市非饮用水时，对满足阴离子表面活性剂（≤0.5mg／L）、粪大肠菌群（≤200个／L）保障率分别为74.59%、98.
2、77%和0、12.82%；回用作工业用水时，对满足总硬度（≤450mg／L）保障率分别为66.52%和87.27%；回用作景观用水时，对满足BOD5（≤6mg／L）、阴离子表面活性剂（≤0.5mg／L）、石油类（≤1mg／L）保障率分别为91.26%、74.59%、0和100%、98.77%、94.56%。混凝-沉淀-粗砂滤-精滤-纳滤工艺对各回用途径下出水指标保障率均为100%。在结合技术经济性和水质保障率的基础上建议：臭氧强化混凝-沉淀-过滤工艺可作为城市非饮用水处理工艺；石灰混凝-沉淀-粗砂滤-活性炭工艺可作为工业回用
3、水处理工艺；混凝-沉淀-粗砂滤-精滤-纳滤工艺可作为景观用水处理工艺。关键词：再生水；安全保障率；纳滤；深度处理；回用途径中图分类号：X799．3文献标识码：A文章编号：%1009－2455（2013）02－0015－04SelectionofprocessesforadvancedtreatmentofmunicipalsewageaccordingtodifferentreuseapproachesZHANGCui-ping，LIUJu-bo（SchoolofUrbanConstruction,HebeiUniversi
4、tyofEngineering,Handan056038,China）Abstract：Takingsecondaryeffluentfromawastewatertreatmentplantastheresearchobject,severalpro-cessesforitsadvancedtreatmentwereadopted,andproperprocessescorrespondingtodifferenteffluentreuseapproacheswerefinallydeterminedthroughanal
5、yzingtheeffluentwaterqualityguaranteeratesofdifferentpro-cesses.Theresultsshowedthat:whentheeffluentwaterfromcoagulation-sedimentation-filtrationprocessandcoagulation-sedimentation-coarsesandfiltration-activatedcarbonprocesswasreusedasurbannon-drinkingwa-ter,thegua
6、ranteeratesoftheabovetwokindsofwatermeetingthespecificationforanionicsurfactant(≤0.5mg／L)andfecalcoliforms(≤200个／L)were74.59%,98.77%,0and12.82%respectively;whentheywerereusedasindustrialwater,theguaranteeratesofthemmeetingthespecificationfortotalhardness(≤450mg／L)w
7、ere66.52%and87.27%respectively;whentheywerereusedasscenicwater,theguaranteeratesofthemmeet-ingthespecificationforBOD5(≤6mg／L),anionicsurfactant(≤0.5mg／L),petroleumpollutants(≤1mg／L)were91.26%,74.59%,0and100%,98.77%,94.56%respectively.Fordifferentreuseapproaches,the
8、guaranteeratesoftheeffluentwaterfromcoagulation-sedimentation-coarsesandfiltration-refinedfiltration-nanofiltrationprocessmeetingthespecification
