给水管网中重金属释放的控制方法研究

*陈红1段春毅1赵志领21.5300032.361021。5。。DOI10.13205/j．hjgc．201409005CONTＲOLMETHODSANDMEASUＲESOFＲELEASEHEAVYMETALSINWATEＲDISTＲIBUTIONSYSTEMChenHong1DuanChunyi1ZhaoZhiling21.GuangxiPolytechnicofConstructionNanning530003China2.CollegeofCivilEngineeringHuaqiaoUnivercityXiamen361021ChinaAbstractThereleaseandenrichmentofheavymetalsseriouslyaffectthequalityofdrinkingwaterinwaterdistributionsystemwhichthreatenthehealthofresidents．Fivemethodsandprinciplesofpipelinephysicalcleaningwasdescribed．TocutoffsectionsofpipeinwaterdistributionsysteminacityofHenanProvinceandthecompositionofgrowthringswithinthepipewallwasanalyzed．Baseonthisusingsmallscaletestsimulatesunidirectionalflushingmethodandscrapingpipesmethodtoremoveheavymetals．Theresultsshowedthatwaterpipesinthiscityhadgotseriouscorrosionphenomenawhichbecamethepotentialthreatofwaterqualitystabilization．Unidirectionalflushingmethodandscrapingpipemethodhadagoodeffectforremovalofheavymetalsinpipegrowthringswhichweretheeffectiveguidanceofpipenetworkoperationsmanagement．Keywordswaterdistributionsystemheavymetalsreleaseremovecontrol*2009ZX07424。2013－11－190。。1、。、pH、、CO2。、2。、。91WaterPollutionControl。1。、、、。3。1.1单向冲洗法3～5100～200m4。。。、1.8m/s5-6。1.2高压水射流清洗、、、。80MPa150MPa。7。30～40m8。。1.3刮管法。4。。DNl00Pigging100m1d。。9。1.4气压脉冲法10。。11-12775～1200MPa。10“”。11-12。。1。1Table1ComparisonofpipecleaningtechnicalcharacteristicsPigging100～200m30～40m100m1km1km4～8h18～12h2～4h22.1单向冲洗法试验DN50～500。1。DN400。02EnvironmentalEngineeringDN50、DN100DN200。、4h、12h、24h12。3。6。、、、pH、、、、、、、、、、。1－Fig．1Thereactordeviceoferosion-releaseofheavymetalsIBＲ2100N。。“”2h0.45μmGB/T5750.6—2006《》。GB/T5750.6—2006。2.2刮管法试验1。DN100DN200。、4h、12h、24h1。33.1单向冲洗法试验结果与分析2、3。2、3。、、。24h。110.2～0.4NTU。2Fig．2Changecurveofturbiditybyunidirectionalflushingmethod3Fig．3Changecurveoftotalparticlesindifferentpipediameter2。2、。2Table2Growingringcompositionanalysisbeforeandafterflushing%FeCaZnCuMnAsAlPbDN5053.4163.6435.2870.3548.8980.3474.6263.16DN10062.0249.4432.9662.7641.7851.7295.1860.50DN20088.3965.2837.1069.5964.7968.6371.8471.394。0.0015～0.007mg/L。3.2刮管法试验结果与分析3、、。12WaterPollutionControl4Fig．4ChangecurveAsinunidirectionalflushingwater3Table3Growingringcompositionanalysisbeforeandafterflushing%AsFeMnCaZnAlCuPbDN10099.4789.4799.6881.6094.6699.8894.6399.80DN20098.3392.2399.8582.5496.2899.8588.7899.92560.2～0.5NTU、、。5Fig．5Turbiditychangecurvebeforescraping6Fig．6Turbiditychangecurveafterscraping7。0.002mg/L。7Fig．7ChangecurveofAsineffluentbyscrapingpipemethod4、、。。1．J．200927S196-99.2．“”J．20093512112-115.3WwarfDvgwTzw．InternalCorrosionofWaterDistributionSystemsM．2nded．DenverAWWAＲesearchFoundation1996403-404.4．D．2007.5．M．2005285.6SwardNAntounJohnEDykenDavidJHiltebran．UnidirectionalflushingApowerfultoolJ．AmericanWaterWorksAssociation199991762-71.7ＲiedmanMelindaHilletat．EstablishingSite-SpecificFlushingVelocitiesC∥ProcofAmericanWaterWorksAssociation2002.8BorisKesselDanEilamItamarAshkenazi．Severehydroblastintra-abdominalinjuriesduetohigh-pressurewaterjetwithoutpenetrationofabdominalcavityJ．InjuryExtra20053682-83.2522EnvironmentalEngineering2.3二级活性污泥池SBＲ3mL×B×H=15m×8.5m×5.5mL×B×H=15m×3m×5.5m。3SBＲ0.096kg/m3·dCOD0.21kg/m3·dSBＲ2。4ρCOD600～1200mg/LρNH3－N250～400mg/LρCOD＜60mg/LρNH3－N＜10mg/L。0.19kg/m3·dCOD0.45kg/m3·d。21CODNH3－N。50%。4CODNH3－NFig．4ThechangeofCODandNH3－Ninthebiologicalcombinedprocess4600SBＲ120t/h2.56200t/h1.5880t/h0.98200t/h164.6。5+8。。1．J．200733136-138.2．J．201030179-83.3．J．20102742-44.4．SBＲJ．20081811130-131.5KubaTSmoldersGHeijnenJJetal．Biologicalphosphorusremovalfromwastewaterbyanaerobic-anoxicsequencingbatchreactorJ．WaterScienceandTechnology1993275241-252.6LawrenceKWangYL．SequencingbatchreactorsJ．HandbookofEnvironmentalEngineering20098459-511.7．-SBＲJ．200733263-65.8．J．201031118-20.9．J．201030787-90.1981－。櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅[e-mail]2007415519-529.11．J．20032089-12.12TimothyGL．WhatisultrasoundJ．ProgressinBiophysicsandMolecularBiology20079378-83.1968－。1987－。[e-mail]52WaterPollutionControl