HarmfulnessoftheleakageinultrafiltrationvalvestothemembraneequipmentandcontrolmeasuresGuoXiaoyu1,GuoBaosheng1,ZhangXuefei1,ZhengYongbin1,WangZhongliang2,YangHong2(1.DatangTuoketuoPowerGenerationCo.,Ltd.,Huhehaote010206,China;2.TuoketuoYunfaPowerGenerationCo.,Ltd.,Huhehaote010206,China)1,1,1,1,2,2(1.,010206;2.,010206)[],,。,,,,,,。,,1~10μg/L,(ORP)350~450mV,,。[];;[]P747.5[]B[]1005-829X(2010)01-0084-02Abstract:Reverseosmosisinfluentwatercontainingsodiumhypochloritewillcausetheoxidationofmembranes,andaffectmembraneperformanceandlife-span.Thecorrosionandleakagehappen,becauseoftheimproperselectionoftheultrafiltrationvalveplatematerial.Whensodiumhypochloriteisaddedforbackwashduringultrafiltration,thebackwashwaterwithsodiumhypochloritewillleaksintotheultrafiltrationtank.WhenthewaterthatcomesfromtheultrafiltrationtanksflowsintotheRO,theROmembranewillbeoxidizedandtherateofROdesaltationwillbereduced.Atpresent,allofthecoppervalveplateshavebeenreplacedbystainlesssteelvalveplates.And,aftertheadjustmenttest,theROwaterresidualchlorineiscontrolledat1-10μg/L,andoxidation-reductionpotential(ORP)at350-450mV.TheseavoidthebreedingofmicrobeswhichpolluteandblocktheROmembrane,andalsocanprotectthereverseosmosismembranefromoxidation.Keywords:ultrafiltration;reverseosmosis;residualchlorine()2450t/h,10D3200mm67~83t/h,4167t/h,4100t/h。167t/h,90%,,()。、、、,,21min1,3~4,。15,1HClNaClO,,。,<0.05MPa,150L/(m2·h)。100t/h,60%,70%,1201mBW30-365FR,20,,∶13∶7,≥97%(3a),HCl、NaHSO3,pH7.0~7.5,5mg/L。30120101IndustrialWaterTreatmentVol.30No.1Jan.,201084——2010-01,30(1),:1,,。2a98%90%,。2006123、41,,3、4,。1、21,。,:SDI<4,1~10μg/L,1NTU,CODMn1.5mg/L,Fe0.1mg/L,pH2~11。、、,,、,。2,,。。8,,,。:,;,。,,。()()1。1,,。。31。4(1)。(2),0~10μg/L,(ORP)350~450mV。(3),,。(4),():,;,;。(5),,。(6),。1[](1980—),2004,。:15848925869,0471-8668440,Ε-mail:xiaogy709803@126.com。[]2009-09-14()(1);(2),(1);(2),,,(1),;(2),,;(3),(1),;(2),;(3),,,185——