二氧化氯投加点对超滤膜运行效能的影响叶挺进

檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲殘殘殘殘528305//。CODMnUV2546．8%7．2%。。TU991A1000－4602201121－0001－04EffectofChlorineDioxideDosingPointonEfficiencyofUltrafiltrationMembraneYETing-jinLUOWang-xingHUANGYu-kunCAOGuo-dongFoshanWaterGroupCo．Ltd．Foshan528305ChinaAbstractTheeffectsofchlorinedioxidedosingbeforecoagulationandaftersedimentationonthepurificationefficiencyandmembranefoulingcontrolofthecombinedprocessofcoagulationsedimenta-tionultrafiltrationandchlorinedioxideoxidationwasinvestigatedinthepilotexperimentandinfluencemechanismofthechlorinedioxidedosingpointonthemembranefoulingwasdiscussed．Theresultsshowthatthedosingpointofthechlorinedioxidehasnoapparentinfluenceontheremovalofparticlepollutantsandpathogenicmicroorganisms．ComparingtothedosingaftersedimentationthechlorinedioxidedosingbeforecoagulationcanincreasetheremovalratesofCODMnby6．8%andUV254by7．2%respectively．Thechlorinedioxidedosingbeforecoagulationcancontrolmembranefoulingbetterthandosingaftersedi-mentationbecausethechlorinedioxidedosingbeforecoagulationcanenhancecoagulationsedimentationandstrengthentheoxidativedegradationofmacromolecularorganicmattersbyextendingthecontacttime．Keywordschlorinedioxideultrafiltrationmembranefoulingpretreatment。、1～3。4。5。6。7·1·2721201111CHINAWATER＆WASTEWATERVol．27No．21Nov．2011。、8～11。12。、。。///。11.11。1Tab．1Characteristicsofrawwaterquality/NTUCODMn/mg·L－1TOC/mg·L－1/CFU·mL－1/CFU·100mL－195．53．345．4548518514．51．892．628958292．383．17246881.2、、、。3m3/h0．5mg/L。1．2～3．0mg/L4min20min。30min12h。PVC50ku40m2。62．5L/m2·h30min10s/40s/10s0．15MPa2～3。15d。、、。TMP13。T＞20℃TMP20=TMPTe0．0239T－201T＜20℃TMP20=TMPTe0．021T－202T———TMPT———TTMP20———20℃1.3、CODMn、UV254、。HACH2100NCODMnUV254TMP20。22.12.1.1。0．08NTU99%。0．01μm。2.1.2CODMnUV2541．72～2．36mg/L0．045～0．060cm－1。CODMnUV2541．10～1．34mg/L0．027～0．039cm－129．8%～44．1%、33．3%～43．8%CODMnUV2541．20～1．52mg/L0．030～0．044cm－122．7%～37．2%、24．1%～36．2%。CODMnUV2546．8%7．2%。·2·2721．watergasheat．com。2.1.3。15±10CFU/mL26±17CFU/mL。。2CFU/mL。。2。2Tab．2Effectofchlorinedioxidedosingpositiononconcentrationsofmicroorganismandoxidationbyproductsinwaterbeforeandafterultrafiltrationmg·L－10．26±0．110．39±0．120．05±0．020．21±0．090．41±0．120．05±0．020．30±0．130．33±0．110．04±0．020．27±0．100．36±0．090．04±0．022.1.414。2。。20．5mg/L0．7mg/L。2.2。、、。1。TMP200．043MPa0．050MPa0．007MPaTMP200．033MPa0．046MPa0．013MPa。TMP20。TMP20。1Fig．1Effectofchlorinedioxidedosingpositiononultrafiltrationmemebranefouling、。。。·3·．watergasheat．com2721。。3①0．08NTU2CFU/mL。②CODMnUV2546．8%7．2%③。④。1．DBPsJ．20082216－20．2．－/J．200726634－36．3．J．200625241－43．4．THMFPJ．200925556－58．5．J．1998174381－386．6．J．200319293－96．7．J．2004345104－108．8．———J．2007111－3．9FiksdalLLeiknesTO．TheeffectofcoagulationwithMF/UFmembranefiltrationfortheremovalofvirusindrinkingwaterJ．JMembrSci20062791/2364－371．10GuoXYZhangZJFangLetal．Studyonultrafiltra-tionforsurfacewaterbyapolyvinylchloridehollowfibermembraneJ．Desalination20092383183－191．11．/PAC/J．200925211－4．12．－J．20032211731－733．13LiangHYangYLGongWJetal．Effectofpretreat-mentbypermanganate/chlorineonalgaefoulingcontrolforultrafiltrationUFmembranesystemJ．Desalina-tion20082221/374－80．14．J．2008252101－103．1973－。[e-mail]2011－06－15·4·2721．watergasheat．com