PAC投加点对超滤组合工艺影响的中试研究

PAC于海宽1，柳斌2，纪洪杰1，3，于淑花3，陈玲1(1．东营工大水环境技术有限公司，山东东营257091;2．哈尔滨工业大学市政环境工程学院，黑龙江哈尔滨150090;3．东营市自来水公司，山东东营257091)针对东营南郊引黄水库微污染原水进行了粉末活性炭/混凝沉淀/超滤联用工艺研究，首先通过烧杯试验确定了粉末活性炭(PAC)和聚合氯化铝(PACl)的最佳投量，然后采用中试装置考察了粉末活性炭的投加点对工艺净水效能的影响。在PACl投量为4mg/L、粉末活性炭投量为2mg/L及PAC投加在第二级机械搅拌絮凝池的工况下，该工艺对CODMn、UV254的去除率分别达到了24%和52%。正确地投加PAC能缓解膜污染，并延长超滤膜的使用周期。超滤膜;粉末活性炭;投加点;膜污染TU991A1000－4602201411－0043－05EffectofPACDosingPointonUltrafiltrationCombinedwithPACandCoagulationSedimentationYUHai-kuan1LIUBin2JIHong-jie13YUShu-hua3CHENLing11．DongyingGongdaWaterEnvironmentTechnologyCo．Ltd．Dongying257091China2．SchoolofMunicipalandEnvironmentalEngineeringHarbinInstituteofTechnologyHarbin150090China3．DongyingWaterSupplyCo．Dongying257091ChinaAbstractAcombinedprocessofPACcoagulationsedimentationandultrafiltrationwasusedtotreatmicro-pollutedrawwaterinNanjiaoreservoirinDongyingCity．Theoptimaldosagesofpowderedac-tivatedcarbonPACandpolyaluminumchlorideweredeterminedinajartest．TheeffectofPACdosingpointontheefficiencyofthecombinedprocesswasinvestigatedinapilot-scaledevice．TheremovalratesofCODMnandUV254were24%and52%respectivelywhenthedosageofpowderedactivatedcarbonwas2mg/Lthedosageofpolyaluminumchloridewas4mg/LandPACdosingpointwaslocatedinthesecond-stagemechanicalflocculationtank．TheappropriatePACdosagecouldreducemembranefoulingandextendmembranelifetime．KeywordsultrafiltrationmembranepowderedactivatedcarbonPACdosingpointmembranefouling12C2621370402210UF。1。NOM23。PAC4·34·第30卷第11期2014年6月中国给水排水CHINAWATEＲ＆WASTEWATEＲVol．30No．11Jun．20145。6～8。PACPAC/UF。1试验材料与方法1.11。1Tab．1Ｒawwatercharacteristic/℃10～15/NTU8～15CODMn/mg·L－12．40～3．10UV254/cm－10．045～0．060pH7．80～8．20/104·mL－13500～4500/CFU·mL－120～501.21。1Fig．1Flowchartofpilot-scalesystemprocessPACl。41～4。。280、120、5015s－1。1.3、、pH、、CODMn、UV254、pH、、、、。2结果与讨论2.1CODMnUV254。300r/min30s150r/min10min60r/min20min0．45μm。PACl60．5、1、2、4、6、10mg/L。2。2Fig．2ＲemovaloforganicmatteratdifferentPACldosages2PAClCODMnPACl4mg/LCODMnUV25426%、27%。4mg/L。PACl4mg/L0．5、1、2、3、4、5mg/LPAC3。PAC850～900mg/g20095%＜10%pH8．9。3PACFig．3ＲemovaloforganicmatteratdifferentPACdosages·44·第30卷第11期中国给水排水．watergasheat．com3CODMnUV254PACPAC2mg/LCODMnUV25428%、35%。PAC2mg/L。2.2PAC。4．1NTU3．7、3．6、3．73．84NTU/66%。PAC0．14NTUPAC0．1、0．02、0．05、0．06NTU。//99%PAC2。。2.3PAC40。4PACCODMnUV254Fig．4ＲemovalofCODMnandUV254atdifferentPACdosingpointsCODMnUV254。CODMnUV254。PAC//CODMnUV25414．5%32%PAC//CODMnUV2547%、24%、19%、8%46%、52%、40%、42%。CODMnUV254。2.4PAC30L/m2·h。Ｒt=△pμ·J1Ｒt=Ｒa+Ｒb+Ｒc2Ｒt———Ｒa———Ｒb———Ｒc———μ———△p———J———。。。60d。PAC40kPa166．7%27kPa80．0%86．7%。125kPa177．8%16kPa77．8%·54·．watergasheat．com于海宽，等:PAC投加点对超滤组合工艺影响的中试研究第30卷第11期100．0%。222kPa83．3%14kPa16．7%66．6%。327kPa107．7%17kPa41．7%66．0%。433kPa120．0%24kPa60．0%60．0%。2＜1＜3＜4＜02＜3＜4＜1＜0。。3讨论。。2．1、2．22．32PAC。CODMn/PACCODMn。PACCODMnUV2540．45μmCODMn。PACCODMnUV254。0．45μmCODMnCODMn/。。。PAC910PACPAC。CODMn1PACCODMn29．8%4PACCODMn8．1%5CODMn。5PACCODMnFig．5IncreasingofCODMnatdifferentdosingpoints4结论①PAC//。②PACl4mg/L、PAC2mg/L、PACCODMn、UV25424%52%。③PACCODMnCODMn。1．PAC-UFJ．201042111779－1782．2．J．200727135－40．3．J．200925516－19．·64·第30卷第11期中国给水排水．watergasheat．com4．J．200622219－13．5．DJ．2008241540－43．6．J．2007353356－360．7FabrisＲLeeEKChowCWKetal．Pre-treatmentstoreducefoulingoflowpressuremicro-filtrationMFmembranesJ．JMembrSci20072891/2231－240．8LohwacharinJOgumaKTakizawaS．Effectsofpread-sorptionbycarbonblackonmembranefiltrationofnatu-ralorganicmatterJ．DesalinationandWaterTreat-ment200961/374－79．9．－－J．201131460－64．10．－－J．201024392－95．1980－。[e-mail]櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆2014－01－14(上接第42页)14．J．2005313326－328．15．J．2008145732－736．16ChenJALiXLiJetal．Degradationofenvironmentalendocrinedisruptordi-2-ethylhexylphthalatebyanewlydiscoveredbacteriumMicrobacteriumsp．strainCQ0110YJ．ApplMicrobiolBiotechnol2007743676－682．17PriyaAMJayachandranS．Inductionofapoptosisandcellcyclearrestbybis2-ethylhexylphthalatepro-ducedbymarineBacilluspumilusMB40J．ChemBi-olInteract20121952133－143．18ＲuelSMChoubertJMEsperanzaMetal．On-sitee-valuationoftheremovalof100micro-pollutantsthroughadvancedwastewatertreatmentprocessesforreuseappli-cationsJ．WaterSciTechnol201163112486－2497．19．2－J．201127371－73．20ＲoslevPVorkampKAarupJetal．Degradationofphthalateestersinanactivatedsludgewastewatertreat-mentplantJ．WaterＲes2007415969－976．1973－。[e-mail]2014－02－11·74·．watergasheat．com于海宽，等:PAC投加点对超滤组合工艺影响的中试研究第30卷第11期