PAC与PAM复合絮凝剂对湿地进水预处理试验郭晋玲

J.SHANXIAGRIC.UNIV.(NaturalScienceEdition)()2009,29(4)002553:2008-12-21　　　:2009-04-30:(1972-),(),,,。PAC与PAM复合絮凝剂对湿地进水预处理试验郭晋玲,宋逸清(,215128)　:为考察无机高分子混凝剂聚合氯化铝(PAC)与有机高分子絮凝剂聚丙烯酰胺(PAM)复合絮凝剂对进水中主要污染物的去除效果,并找出最佳的投药量,进行了PAC与PAM复合絮凝剂对人工湿地进水预处理的效果研究。结果表明,PAC与PAM复合絮凝剂对污水中SS、TP、COD去除效果较好。在PAC最佳投加量为24mg/L、PAM为0.3mg/L时,对河水和生活污水的SS去除率分别达到了65%、69%,对TP的去除率为41%、49%,对COD的去除率为36%、44%。湿地的年药剂费用为6.2万元。:PAC;PAM;复合絮凝剂;人工湿地;预处理:X52　　:A　　:1671-8151(2009)04-0379-04UsingPACandPAMCompositeCoagulanttoPretreatConstructedWetlandsInfluentGUOJin-ling,SONGYi-qing(EnvironmentalMonitoringStation,WuzhongDistrict,Suzhou215000,China)Abstract:InordertoinspecttheeliminationeffectofPACandthePAMcompoundflocculantonthemainpollutantsinwateranddiscoveredthebestmedicinaldosage,thecoagulationexperimentofPACandPAMcompositecoagulantonconstructedartificialwetlandinfluentwasconducted.Theresultshowedthatthecompositecoagulantcouldimprovere-movalofSSandTPaswellasCODinconstructedwetlandsinfluent.TheSS,TPandCODremovalratiowere65%,41%and36%respectivelywithPACdosageof24mg/LandPAM0.3mg/Ltowetlandsinfluentfromsmallcreekwhiletheywere69%,49%and44%forruraldomesticwastewater.Thetotalcoagulantcostwas62thousandyuanperyear.Keywords:PAC;PAM;CompositeCoagulant;Constructedwetlands;Pretreatment　　,、、,。,。,,、,SS,[1～3]。,,SS,,。,pH,(PAC)(PAM),,,。1　材料与方法1.1　,4000m3/d。5,。1。1.2　MY-6000。,DOI:10.13842/j.cnki.issn1671-8151.2009.04.0041　Table1　ThequalityofwetlandsinfluentInfluentfactorsSmallcreekRuraldomesticwastewater(℃)18～2118～21pH7.36～7.857.24～7.81DO(mg/L)0～0.30.1～0.5COD(mg/L)102～14635～88TP(mg/L)3.07～5.211.10～5.79SS(mg/L)25～4917～25,GGt,。:350r·min-1、10s;:350r·min-1、50s,;,:60r·min-1、10min,;:,30min,。。1.3　PAC,8mg·L-1、16mg·L-1、24mg·L-1、32mg·L-1、40mg·L-1、48mg·L-1。PAM,0.1%,0.3mg·L-1。1.4　YSIDO200,CODHACH,TP、SS。[4]2　结果与分析2.1　SSPAC,SS1、2。PAC,SS,PACPAMSS。,,,,。1　SSFig.1　SSremovalwithdifferentamountofcompos-itecoagulanttosmallcreek2　SSFig.2　SSremovalwithdifferentdosageofcompos-itecoagulanttorurallivingsewage　　,PAC24mg/L,SS(GB18918-2002)B(20mg/L),SS65%,PAC40mg/L,SS92%,,SS。,PAC16mg/L,B,SS57%,32mg/L,SS86%。PACPAM,PAM(),,,PAC[5]。2.2　TPTP3、4。380()20093　TPFig.3　TPremovalwithdifferentamountofcompos-itecoagulanttosmallcreek4　TPFig.4　TPremovalwithdifferentamountofcompos-itecoagulanttorurallivingsewage　　3、4,PAC,TP。24mg/L,TP41%,TP49%,48mg/L,TP60%,TP70%,,TP1.6mg/L,TP0.8mg/L,TP。TP80%,PAC,AL3+TP,,,TP,。2.3　COD,COD102～146mg/L,COD35～88mg/L。PACPAM,COD,5、6。24mg/L,COD36%,COD77mg/L,COD44%,33mg/L,B(GB60mg/L);,48mg/L,COD46%,COD55%,PAC,COD,COD。,PAM,,,,。5　CODFig.5　CODremovalwithdifferentamountofcom-positecoagulanttosmallcreek6　CODFig.6　CODremovalwithdifferentamountofcom-positecoagulanttorurallivingsewage2.4　PACPAM,、。PAC1500/t,PAM20000/t,,PAC24mg/L,SSB,PAC40mg/L,TPB,24mg/L,CODB。4000t/d,PAC24mg/L,PAM0.3mg/L,38129(4):PACPAM6.2。3　结论PACPAMSS、TPCOD。24mg/L,SS65%、69%,TP41%、49%,COD36%、44%。SS、CODB,,TP,TPB,TP,,TPB。PAC24mg/L、PAM0.3mg/L,6.2。,PACPAM24mg/L、0.3mg/L。　　　[1]WinterKJ,DGoetz.Theimpactofsewagecompositiononthesoilcloggingphenomenaofverticalflowconstructedwetlands[J].Wat.Sci.Tech,2003,48(5):9-14.[2]NguyenLM.Organicmattercomposition,microbialbiomassandmicrobialactivityingravel-bedconstructedwetlandstreatingfarmdairywastewaters[J].Ecolog.Engin.,2000,6:99-221.[3],,.[J].,2003,23(5):457-461.[4].[M].:,1998.[5],,,.PACPAM[J].,2008,34(9):58-61.(编辑:杨忠义)382()2009