PRB负载生物介质去除地下水中硝酸盐试验研究_杨维
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2020-01-12 00:03:10
文档简介：
RemovalEffectoftheImmobilizedBiologicalMediumofPRBonGroundwaterNitrateWeiYANG1,ShuangSHI1,Bing-shuangSUN21.CollegeofMunicipalandEnvironmentalEngineering,ShenyangJianzhuUniversity,shengyang,China,110168;2LiaoningUrbanConstruction&RenewalProjectOffice,LiaoningShenyang,China,110016,Email:shishuang0306@163.comAbstract:PermeableReactiveBarrier(PRB)isanewtechnologyforin-situremediationofpollutedgroundwater.Nitratewasselectedastargetcontaminantandpolyvinylalcohol(PVA)asthebodyofmicrobialloadincolumnexperimentofsimulatinggroundwaterenvironment.ThemediumofPRBwasmadebymicrobialimmobilizationtechnologyandmaterial-embeddingmethodtoimmobilizethemixednitrifyinganddenitrifyingbacteria.There-sultsindicatethatthemaximumnitrateremovalefficiencyofthesystemis90.1%withthewatertemperatureof13-15,pH℃of7.2-7.5andCODof600mg/L.UsingtheimmobilizedbiologicalmediuminPRBtechnologyisfeasibletosomeextentforremediationofnitratecontaminatedgroundwater.Keywords:PRB;nitrate;immobilizedbacteria;removaleffectPRB负载生物介质
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