纳米铁技术在污染场地土壤与地下水修复中的应用实践概要1.pptx

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1、ApplicationofNanoironinSoilandGroundwaterRemediation2013InternationalForumonRestorationofContaminatedSitesManagement–Beijing,ChinaDanielW.Elliott,Ph.D.,SeniorConsultantOctober22,2013AgendaIntroduction–BrownfieldchallengesinChinaOverviewofthenZVItechnologyAp

2、plicationsofnZVIatlargecontaminatedsitesFuturedirectionsofthenZVItechnologyQandAI.AtaleoftwotitansDifferenttimes,similartrajectoriesUS–postWWIIChina–GreatLeapForwardMajorexpansionofmanufacturingSteel,metalproducts,&vehiclesChemicals&pharmaceuticalsPlasticsE

3、lectronicsEconomicgrowthwealth,stability&environmentalimpactsAllenvironmentalmedia,esp.air&waterCreated“Brownfield”sitesUnderscoredcreationof“regulatoryinfrastructure”torespondtocrisisI.BrownfieldmanagementintheUSCERCLA1980IdentifyPRPs&“polluterpays”Liabil

4、ityis“strict,jointandseveral,andretroactive”IfnoPRPs,EPAleadscleanupSARA1986Reauthorized&increased“Superfund”Permanent&innovativeremediesGreaterinvolvementbyStatesBrownfieldAct2002InnocentpurchaserduediligencedefenseSmallbusinessliabilityexemptionNofederale

5、nforcementordutytocleanupcontaminationfromoff-sitesourcesCVOC,CBs,pesticides,dioxins/furans425,000BrownfieldsitesinUS2,000,000hectaresimpactedI.BrownfieldmanagementinChinaRegulatoryinfrastructureandguidancebeingbuilt2006:PollutionsurveyinitiatedbyMEPNationa

6、linscope;200,000soilandgroundwatersamples2011:LandmarkinvestmentplansbyMEPNational12thFive-YearPlanforSoilsEnvironmentalProtection30billionCNY($5billionUSD)NationalPlanforUndergroundWaterPollutionPrevention34.7billionCNY($5.6billionUSD)300,000–600,000Brow

7、nfieldsitesTypicalcontaminantsMetals,petroleum,inorganic-N,CN-,phenols…NotmuchdataonpossiblerecalcitrantcontaminantsI.CommoncontaminantsatBrownfieldsitesAs,Cr,Pd,Hg,Ni,ZnMeCl2,CHCl3,CCl4VC,DCEs,TCE,PCEAldrin,dieldrinChlordaneDDT,DDE,DDDBHC(HCH)PCBsAcetoneBe

8、nzeneTolueneXyleneNapthaleneSolventsHighlyRecalcitrantOrganics(POPs)MetalsChlorinatedVOCs(CVOCs)ChallengingtotreatVERYdifficulttotreat!WatercrisisinChinaGWresourcesakeycomponentUnevendistribution-30%No