菱铁矿催化过氧化氢过硫酸钠修复地下水中TCE时对微生物的影响
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2020-01-22 13:39:44
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第21卷第4期2014年7月地学前缘(中国地质大学(北京);北京大学)EarthScienceFrontiers(ChinaUniversityofGeosciences(Beijing);PekingUniversity)Vol.21No.4July2014http://www.earthsciencefrontiers.net.cn地学前缘,2014,21(4)收稿日期:2013-11-20;修回日期:2014-03-10基金项目:国家自然科学基金项目(40972162)作者简介:刘雅莉(1987—),女,硕士,主要研究方向为地下水有机污染检测与治理。E-mail:lylbreeze@sina.comdoi:10.13745/j.esf.2014.04.020菱铁矿催化过氧化氢-过硫酸钠修复地下水中TCE时对微生物的影响刘雅莉,刘菲,黄伟英中国地质大学(北京)水资源与环境工程北京市重点实验室,北京100083LIUYali,LIUFei,HUANGWeiyingBeijingKeyLaboratoryofWaterResourcesandEnvironmentalEngineering,ChinaUniversityofGeosciences(Beijing),Beijing100083,ChinaLIUYali,LIUFei,HUANGWeiying.Theimpactonmicroorganismwhileusingsiderite-catalyzedhydrogenperoxideandsodiumpersulfatetoremovetrichloroethylenefromgroundwater.EarthScienceFrontiers,2014,21(4):186-190Abstract:Thereisacertainamountofindigenousmicroorganisminthegroundwater.InordertoknowtheimpactonmicroorganismwhileusingFenton-likeoxidationtoremovetrichloroethylenefromgroundwater,theexperimentswereconductedbymonitoringtheFluoresceinDiacetateactivityofthemicroorganismandTCEconcentrationinthemixtureofaerobicactivatedsludgeandwater,usingsiderite-catalyzedhydrogenperoxide-sodiumpersulfateasanoxidationsystem.Theexperimentscouldillustratetheimpactofthisoxidationsystemonthemicroorganism,andtheinteractionbetweenTCEandmicroorganismwhenTCEexists.Theresultshowsthatthisoxidantsinthesystemcouldinactivatetheenzymaticactivitiesofmicroorganism.Thehighertheratiooftheoxidantvolumetothesewagevolumeis,thehigherthelethalityrateofthemicroorganismis.Whentheratioreaches1.2∶1(theconcentrationofperoxideandsodiumpersulfateare0.1mol/Land0.0042mol/L,respectively),thelethalityrateis50percent.TCEalsoinactivatestheenzymaticactivitiesofmicroorganism.Inaddition,thelethalityrateofthemicroorganismrosewiththeincreaseofTCEconcentration.However,thepresenceofthemicroorganismhaslittleeffectonthetreatmentofTCE.Keywords:Microbialactivity;Fenton-likeoxidation;trichloroethylene;influence摘要:地下水中存在着一定量的土著微生物,为了了解类芬顿氧化去除地下水中三氯乙烯(trichloroethyl-ene,TCE)时对微生物的影响,实验利用某污水处理厂
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