由混凝或气浮构成的组合工艺处理太湖原水比较

书第46卷第8期2014年8月哈尔滨工业大学学报JOUＲNALOFHAＲBININSTITUTEOFTECHNOLOGYVol.46No.8Aug．2014由混凝或气浮构成的组合工艺处理太湖原水比较高梦鸿1，高乃云1，周金金1，戎文磊2，陆纳新2，袁君2(1．同济大学污染控制与资源化研究国家重点实验室，200092上海;2．无锡自来水总公司，214031江苏无锡)摘要:针对低温东太湖原水，考察常规+臭氧－生物活性炭(O3－BAC)处理中气浮和沉淀两种工艺对出水水质的影响．结果表明:气浮工艺对原水浊度的去除效果明显优于沉淀工艺，平均去除率高约10.1%，无论是气浮还是沉淀工艺，经O3－BAC深度处理后出水浊度均稳定在1NTU以下;气浮工艺对有机物的去除效果略优于沉淀工艺，CODMn和DOC平均去除率分别高约5.4%和1.6%，常规处理工艺后出水有机物含量不能达标，O3－BAC工艺出水CODMn稳定在0.5～2.1mg/L，DOC稳定在0.3～2.0mg/L;沉淀/气浮工艺只对腐殖质略有去除效果，砂滤对荧光物质几乎无去除作用，而O3－BAC工艺是去除水中荧光类物质的主要手段;气浮工艺对藻类的去除效果略优于沉淀工艺，深度处理后出水硅藻活性和叶绿素浓度降为0，蓝藻仍保有部分活性．关键词:太湖水;斜管沉淀;气浮工艺;O3－BAC;去除效果中图分类号:TU991文献标志码:A文章编号:0367－6234(2014)08－0090－06ComparisonofpiloteffectbetweensedimentationanddissolvedairflocculationforthetreatmentofTaihuLakewaterGAOMenghong1，GAONaiyun1，ZHOUJinjin1，ＲONGWenlei2，LUNaxin2，YUANJun2(1．PollutionControlandＲesourceＲeuseStateKeyLaboratory，TongjiUniversity，200092Shanghai，China;2．WuxiWaterWorksCo．，Ltd，214031Wuxi，Jiangsu，China)Abstract:TheeffluentqualityofcombinedprocesscontainingO3-BACtreatmentbetweensedimentationprocessanddissolvedairflocculation(DAF)processforthetreatmentofEastTaihuLakerawwaterwerecompared．TheresultsshowedthattheremovalefficiencyofturbiditybyDAFwas10.1%higherthanthatbysedimentationprocess，andtheeffluentturbiditywasstabledat1NTUorlessafterthetreatmentoftheO3-BAC．Comparedwiththesedimentationprocess，theCODMnandDOCremovalefficienciesofDAFwereincreasedby5.4%and1.6%，respectively．TheCODMnandDOCwerestabledat0.5－2.1mg/Land0.3－2.0mg/LafterO3-BACprocessrespectively，whiletheorganicconcentrationcouldnotreachtoeffluentstandardafterconventionaltreatment．O3-BACprocessplayedadominantroleinthedecreaseoffluorescenceintensity，whileconventionaltreatmentprocesshadonlyaslightornoeffectontheremovaloffluorescentmaterial．TheexperimentalresultsindicatedthattheDAFwasslightlybetterforalgaeremovalefficiencythansedimentationprocess．Theconcentrationofdiatomactivityandchlorophylldecreasedto0andcyanobacteriastillretainedpartoftheactivityafteradvancedtreatment．Keywords:TaihuLakewater;tubesedim