PACPDM复合混凝剂对冬季太湖原水的除藻性能研究

:10050930(2010)05080709:X703:Ado:i10.3969/.jissn.10050930.2010.05.010:20081011;:20090313:(BS2007121);(2003BA327C):(1959),,,.PAC/PDM张跃军,赵晓蕾,李潇潇,刘程,朱玲玲(,210094):采用由聚二甲基二烯丙基氯化铵(PDM)与聚合氯化铝(PAC)制成的系列稳定PAC/PDM复合混凝剂,用于冬季太湖原水的除藻性能研究.通过混凝除藻试验,考察了复合混凝剂加药量PAC与PDM复配质量比例(20151)PDM特征黏度(0.553.99dL/g)对除藻性能的影响,探讨了使用复合混凝剂替代预加氯工艺的可行性及深度处理时复合混凝剂的除藻性能.结果表明:(1)对原水使用PACPAC/PDM(0.55/2013.99/51)复合混凝剂后的余浊达到2NTU的水厂沉淀出水浊度标准时,其加药量分别为3.05mg/L2.912.24mg/L,除藻率分别为85.95%87.26%92.28%;加药量为3.05mg/L时,其除藻率分别为85.95%88.03%96.00%,余浊分别为2.00NTU1.550.53NTU.(2)对加氯水的加药量为3.40mg/L时,PAC/PDM(1.53/101)复合混凝剂对原水的处理效果优于PACPAC/PDM(0.55/201)复合混凝剂对加氯水的处理效果;PAC/PDM(3.99/51)复合混凝剂对原水的处理效果优于PACPAC/PDM(055/201)PAC/PDM(1.53/101)复合混凝剂对加氯水的处理效果.(3)满足余浊1NTU的深度处理要求时,PAC/PDM(0.55/2013.99/51)复合混凝剂比PAC减少藻含量11.2%59.2%,节省加药量6.7%26.3%.因此,PAC/PDM复合混凝剂与PAC相比,余浊达标时节省加药量,加药量相等时提高处理效果.使用PAC/PDM复合混凝剂可以替代预氯化工艺中混凝除藻作用的部分功能,且是未来深度处理时有效的技术储备.:(PDM);(PAC);;;1/4,,,..,(2.0104/ml),185201010JOURNALOFBASICSCIENCEANDENGINEERINGVo.l18,No.5October2010,.,,,.(PAC),,,.[1].(dimethyldiallylammoniumchloride,DM)(PDM)FDA,,[2].,(AM)DM,[35],PAC,83.6%98.5%[6].,1.3dL/gPDMPAC,PAC,[7].AM,PDM(),,[8].PAC,,PDMPACPAC/PDM,,PACPDMPDM.,,,,,,.11.1:;XSP8C:;TA62:;QZ201:;JS94H:.PAC:,w(Al2O3)=10.2%;PDM:4(),0.55dL/g1.53dL/g247dL/g3.99dL/g.PAC,PAC/PDMw(Al2O3),m(Al2O3)m(PDM)=51101201,3,.,PAC/PDM(PDM/),PAC/PDM(0.55/201)PAC/PDM(399/51)12.1.2,.57,3034NTU,pH=6.8,1.98104/m,l(Oocystis)(Chlorella)(Scenedesmus)(Chlorophyta)(Cyclotella)(Melosira)(Bacillariophyta),80%,(Cryptomonas)808Vo.l18(Merismopedia)(Microcystis)20%.(),57,3236NTU,pH=6.6,1.56104/m,l1.44mg/L,2h.1.3(1)()2NTUPAC,,,:300rpm2.5min,100rpm3min,30rpm3min,30min;(2)1000ml,(300rpm)15s,;(3)0.1ml0.1ml,,;50m,lZeta./%=(-)/100%2,PACPAC/PDM(0.55/201)PAC/PDM(3.99/51),14.,,PACPAC/PDM(0.55/201)PAC/PDM(1.53/101)PAC/PDM(3.99/51),56.809No.5:PAC/PDM2.1PACPAC/PDM14,PAC,3.5mg/L,PAC,.,,,,,.,,23NTU2NTU.,142NTU,;PAC,PAC(3.05mg/L),,1.810Vo.l181PACPAC/PDMTable1ComparisonoftreatmenteffectsofPAC,PAC/PDMcompositecoagulantsPACPAC/PDM(/)0.55/2010.55/1010.55/511.53/2011.53/1011.53/512.47/2012.47/1012.47/513.99/2013.99/1013.99/512NTU/mg/L3.052.912.762.562.852.652.432.742.562.332.672.472.24/%85.9587.2689.1690.4188.0391.1792.1189.1691.3592.2089.3691.4692.283.05mg/L/%85.9588.0390.1392.8889.1692.7394.5890.7892.9795.6391.2693.8296.00/NTU2.001.551.190.991.401.140.881.120.960.731.030.890.531,2NTU,PACPAC/PDM(0.55/201)PAC/PDM(399/51)85.95%87.26%92.28%,305mg/L2.912.24mg/L,PAC9.3%45.1%,4.6%26.6%;3.05mg/L,85.95%88.03%96.00%,2.00NTU1.550.53NTU,PAC148%71.5%,22.5%73.5%.2.214,,,.,PAC,PAC.PDM,PAC[910],.,PAC.141,PACPDM(PDM),PDM,,.PDM,,PAC,,.PDM1.53dL/g,,2.50mg/L,PACPAC/PDM(1.53/201)PAC/PDM(1.53/51)Zeta-16.362mv-16.029mv-14.398mv.,PDM,Zeta,PACPDM,.,[11],,.,PDM,,,,;PDM,,,,,.,PACPDM,PDM.PDM,,PDM[12],,,.,2NTU,PAC/PDM(0.55/101)PAC/PDM(3.99/201)811No.5:PAC/PDM2.76mg/L2.67mg/L,89.16%89.36%;3.05mg/L,90.13%91.26%,1.19NTU1.03NTU.,PDM50%,,.2.3,PAC/PDMPAC.,,,.2.3.156,PAC,.1PAC3.05mg/L.563.05mg/L,PACPAC/PDM(0.55/201)PAC/PDM(3.99/51)85.95%88.03%96.00%89.34%9192%98.21%;2.00NTU1.550.53NTU279NTU1.900.66NTU.,,,,,.,,[13].,,,[14].,,,,,[15],,.2.3.26PAC3.40mg/L,;5,,2.2PACPAC/PDMTable2ComparisonoftreatmenteffectsofPAC,PAC/PDMcompositecoagulantstorawwaterandchlorineaddedwaterPACPAC/PDM(0.55/201)PAC/PDM(1.53/101)PAC/PDM(3.99/51)PACPAC/PDM(0.55/201)PAC/PDM(1.53/101)PAC/PDM(3.99/51)3.40mg/L/%87.0188.8293.9396.7290.9193.6895.7698.62/NTU1.361.100.770.382.001.371.050.512,3.40mg/L,PAC/PDM(1.53/101)PAC.,PAC/PDM(1.53/101),812Vo.l18.,,PAC/PDM.2.4,,,1NTU.14PACPAC/PDM(0.55/201)PAC/PDM(3.99/51)1NTU,,3.3PACPAC/PDMTable3ComparisonoftreatmenteffectsofPAC,PAC/PDMcompositecoagulantsatdeeptreatmentPACPAC/PDM(0.55/201)PAC/PDM(3.99/51)1NTU/mg/L3.723.472.74PAC/%/6.726.3/%87.3788.7994.84//ml2.501032.221031.02103PAC/%/11.259.23.72mg/L/%87.3789.6897.63//ml2.501032.041034.69102PAC/%/18.481.2/NTU1.000.830.23PAC/%/17.077.03,1NTU,PAC3.72mg/L,2.50103/m,l,.PAC/PDM(0.55/201)PAC/PDM(3.99/51)3.472.74mg/L,PAC6.7%26.3%,112%59.2%.3.72mg/L,PAC/PDM(0.55/201)PAC/PDM(3.99/51)PAC18.4%81.2%,17.0%77.0%.,,PAC/PDM,,.3(1)PAC/PDMPAC,PAC.PAC/PDM(0.55/201)PAC/PDM(3.99/51)PAC,2NTU,9.3%45.1%,4.6%26.6%;3.05mg/L,14.8%71.5%,22.5%73.5%,,;(2)PACPDM,PDM,PAC/PDM,.;(3),,PAC/PDM813No.5:PAC/PDM;(4),PAC/PDM,.[1],.[J].,2002,16(2):1619LiShanren,LiFengting.Thecurrentstatusanddevelopingtrendofinorganicandorganicmacromolecularcompositeflocculants[J].EnergyEnvironmentalProtection,2002,16(2):1619[2]WandreyC,HernandezBarajasJ,HunkelerD.Diallyldimethylammoniumchlorideanditspolymers[J].AdvancesinPolymerScience,1999,145:123182[3],,,.[J].,2000,31(4):79YinWeihong,SongXiangyang,ZhangZhanjun,eta.lStudyofalgaeremovalbycoagulationandprecipitationinZhengzhouBaimiaopotablewaterplant[J].IndustrialWater&Wastewater,2000,31(4):79[4],.[J].,2005,28(1):3133LiuShuaixia,WangRu.iEnhancedcoagulationfortreatingcontaminatedwaterofyellowriverduringwinterseason[J].EnvironmentalScienceandTechnology,2005,28(1):3133[5],.[J].,2004,35(5):2022WangGuirong,ZhangJie.Astudyoftreatmentoflowturbidity,lowtemperaturewaterbyenhancedcoagulation[J].Industr