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1、实用文档水质条件对聚合氯化铝混凝去除铜绿微囊藻的影响摘要：本论文以地表水中常见的淡水蓝藻-铜绿微囊藻（MicrocystisAeruginosa）为研究对象，以聚合氯化铝为混凝剂，研究了共存离子（Cl-、H2PO4-、SO42-、NO3-和F-）、腐植酸、表面活性剂对聚合氯化铝混凝除藻的影响。结果表明，Cl-和H2PO4-的存在明显降低了铜绿微囊藻的去除率，且随着水中Cl-和H2PO4-浓度增加，藻的去除率逐步下降，SO42-对混凝去除铜绿微囊藻具有一定的抑制作用，且抑制作用随着其浓度的增加呈现出先增加后减弱的趋势，NO3-和F-对混凝去除铜绿微囊藻影响较小，其浓度分别增加到10m
2、g/L和1.5mg/L时，Chla去除率仅分别降低了3.6%和11.9%。PAC当投加量为20mg/L时，剩余浊度降至0.80NTU，Chla去除率达到84.0%,继续增加投加量，Chla去除率变化不大。随着HA浓度的增加，对混凝除藻的抑制作用表现为先增加后急剧降低，达到一定浓度后又增加；阳离子表面活性剂CTMAB随浓度的增加，对混凝除藻的作用表现为先增加后降低，阴离子表面活性剂SDS和非离子表面活性剂TritonX-100的存在对混凝除藻的影响很小；自来水和过滤湘江原水配制的藻液混凝效果均优于蒸馏水。关键词：铜绿微囊藻混凝聚合氯化铝除藻水质条件大全实用文档TheimpactofW
3、aterqualityconditionsonPACcoagulationfortheremovalofMicrocystisAeruginosaAbstract:ThispaperselectsMicrocystisAeruginosa,acommonfreshwateralgaeinsurfacewater,astheresearchobjectandselectsPolyaluminiumChloride(PAC)asacoagulanttostudytheimpactofseveralfactors.Theions(Cl-、H2PO4-、SO42-、NO3-andF-),h
4、umicacidandsurfactant,onPACcoagulationforalgaeremoval.Theresultsshowedthat,Cl-andH2PO4-significantlyreducedthepresenceoftheremovalofMicrocystisaeruginosa,andwiththeCl-andwaterH2PO4-concentration,algaeremovalrategraduallydeclined,SO42-onthecoagulationofMicrocystisaeruginosahasacertainextent,and
5、theinhibitionincreasedwiththeincreaseofitsconcentrationincreasesfirstlyandthenshowingaweakeningtrend,NO3-andThepresenceofF-coagulationlittleeffectonMicrocystisaeruginosa,anditsconcentrationincreasedto10mg/Land1.5mg/L.when,Chlaremovalratedecreasedbyonly3.6%and11.9%.Chlaremovalrateincreases,sepi
6、olitebetter;withincreasingconcentrationsofHA,theinhibitionofcoagulationforalgaeremovalincreasedrapidlyatfirstanddecreasedthenincreasedtoreachacertainconcentration;CTMABwiththecationicsurfactantconcentrationincreasedtheinhibitoryeffectofalgaeoncoagulationperformancefirst大全实用文档increasedandthende
7、creased,anionicsurfactantSDSandnon-ionicsurfactantthepresenceofTritonX-100haslittleeffectoncoagulationforalgaeremovalKeywords:MicrocystisAeruginosa,CoagulationPAC,Removalofalgae,Waterqualityconditions大全实用文档目录摘要IAbstractII第一章引言11.1我国水体富营
