原水突发性铊污染应急处理研究

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1、原水突发性铊污染应急处理研究摘要：模拟水厂常规处理工艺对含铊（Tl）原水的处理效果，结果表明常规处理工艺不能将含Tl浓度为0.155～0.555μg/L的原水处理达标。研究高锰酸钾、pH、粉末活性炭等因素单独作用及联合作用的除Tl效果，结果表明：各因素单独作用时，Tl去除率在一定范围内随着投量增加而上升；联合作用时，KMnO4投加1mg/L，pH调节为8.5，粉末活性炭投加20mg/L，能将含Tl浓度为0.613μg/L以下的原水处理达标。初步探究了KMnO4的除Tl机理：中碱性条件下，KMnO4不能将Tl+氧化成Tl3+，KMnO4的还

2、原产物新生态二氧化锰能将0.4μg/L的模拟含Tl水样处理至0.003μg/L。生产性试验表明：KMnO4投加0.5mg/L，pH调节为8与KMnO4投加0.5mg/L，Cl2投加0.5mg/L的除Tl效果优于各因素单独作用时的处理效果。关键词：铊常规处理工艺高锰酸钾应急处理中图分类号：X52文献标识码：A文章编号：1672-3791（2014）04（b）-0120-05ResearchontheEmergencyTreatmentofRawWaterAccidentlallyPollutedbyThalliumJINXiaohua1，Z

3、HOUQin1，LIUYongzhi2，CAIZhanhang310（1.TheKeyLabofPollutionControlandEcosystemRestorationinIndustryClusters，MinistryofEducation，CollegeofEnvironmentandEnergy，SouthChinaUniversityofTechnology2.WaterQualityTestingOfGuangzhouSuiquanCo.Ltd，Guangzhou511400，China；3.PanyuWaterCo.L

4、td，Guangzhou，511400，China）Abstact：Theremovalefficiencyofthalliumwasevaluatedthroughlaboratorytests，whichwasbynatureasimulatedtreatmentforthetimebeing.Theresultsshowedthattheoutflowwater，whichwastreatedbyconventionalprocesswiththerawwaterwiththemassconcentrationofthalliumb

5、etween0.155μg/Land0.555μg/L，couldnotreachthestandard.Acamparativestudyamongfourmethods，whichweredosingpotassiumpermanganate（KMnO4）solely，adjustingpHvaluebyaddingsodiumhydrate，dosingpoweredactivatedcarbon（PAC）anddosingKMnO4combinedwithPAC，wascarriedoutontheremovalofthalliu

6、m.TheresultsdemonstratedthattheabilityofremovalofthalliumhadenhancedinsomecontentwiththeincreasingdosageofKMnO4，PAC，NaOH；whendosingKMnO410of1.00mg/L，withpHvalueof8.5，withactivatedcarbonof20mg/L，andPAFCof3mg/Lcouldtreattherawwaterwiththemassconcentrationofthalliumlowerthan

7、0.613μg/L.ThemechanismofremovalthalliumbyKMnO4wasalsoresearched.TheresultindicatedthatKMnO4couldn’tconvertthallousionstothallicionsintheneutraloralkalineconditions.Itwasthenewlyformedmanganesedioxide（thereduzateofKMnO4）thatplayedanimportantroleontheeliminationofthallium，w

8、ithmassconcentrationof0.4μg/Ldecreasingto0.003μg/L.Productexperimentsshowedthattheremovaleffecie