Perspectives on Innovative Characterization and Remediation Technologies for Contaminated Sites

Download Perspectives on Innovative Characterization and Remediation Technologies for Contaminated Sites

Post on 19-Mar-2016

40 views

Category:

Documents

2 download

Embed Size (px)

DESCRIPTION

Perspectives on Innovative Characterization and Remediation Technologies for Contaminated Sites. Sept. 27, 2001 ENRY Belgrade, Yugoslavia Walter W. Kovalick Jr., Ph.D. Director Technology Innovation Office US Environmental Protection Agency. Technology Innovation Office. - PowerPoint PPT Presentation

TRANSCRIPT

  • Perspectives on Innovative Characterization and Remediation Technologies for Contaminated SitesSept. 27, 2001ENRYBelgrade, Yugoslavia

    Walter W. Kovalick Jr., Ph.D.DirectorTechnology Innovation OfficeUS Environmental Protection Agency

    8/3//01

    Technology Innovation OfficeResponsible Party/OwnerOperatorFederal/StateProject ManagerConsultingEngineerTechnology VendorInternational MarketsInvestor CommunityTechnology VendorsClients for Information on Technology Innovations

    8/3//01

    TIOs MissionAdvocates smarter technologies for the characterization and cleanup of contaminated sites

    Works with clients to identify and understand better, faster, and cheaper options

    Seeks to identify and reduce barriers to the use of innovative technologies

    8/3//01

    http://cluin.org/asr

    8/3//01

    Superfund Remedial Actions:Summary of Source Control Treatment Technologies (FY 1982 - FY 1999)Soil Vapor Extraction (196) 26%In Situ Solidification/ Stabilization (46) 6%Incineration (off-site) (94) 13%Thermal Desorption (61) 8%Bioremediation (49) 7%Incineration (on-site) (42) 6%Chemical Treatment (10) 1%Solidification/Stabilization (137) 19%Ex Situ Technologies (425) 58%In Situ Technologies (314) 42%http://cluin.org/asr

    8/3//01

    Superfund Remedial Actions:Trends in Types of Source Control RODs (FY 1982 - FY 1999)75%25%4%15%35%32%86%74%68%51%45%46%44%40%33%23%25%32%27%28%29%49%42%51%47%40%52%61%70%73%73%67%73%71%55%14%19%30%0%0%2%0%0%1%0%2%1%4%2%6%9%23%21%7%0%10%20%30%40%50%60%70%80%90%100%828384858687888990919293949596979899Fiscal YearPercent of Source Control RODshttp://cluin.org/asr

    8/3//01

    Superfund Remedial Actions:In Situ Technologies for Source Control (FY 1985 - FY 1999)Percentage of Source Control Treatment Projects44%34%47%61%68%31%33%45%31%21%29%36%34%50%47%20%30%40%50%60%70%80%858687888990919293949596979899Fiscal YearPercentage of Treatment TechnologiesLinear Trendline (In Situ Projects)http://cluin.org/asr

    8/3//01

    Superfund Remedial Actions:Groundwater Remedies (FY 1982 - FY 1999)Total Sites With Pump-and-Treat, Monitored Natural Attenuation (MNA) and In Situ Groundwater Treatment Remedies = 749Pump-and-Treat Only (521) 71%Pump-and-Treat and In Situ (48) 6%Pump-and-Treat and MNA (55) 7%In Situ Only (16) 2%Pump-and-Treat, In Situ, and MNA (14) 2%In Situ and MNA (3)

  • EPAs Environmental Technology Verification Programhttp://www.epa.gov/etv

    8/3//01

    ETV Site Characterization and Monitoring Technologies Pilothttp://www.epa.gov/etv

    Categories

    Technologies Verified

    Report Status

    Cone penetrometer/laser-induced fluorescence

    2

    Completed

    Field-portable XRF (SITE)

    7

    Completed

    Field portable GC/MS

    2

    Completed

    Soil/soil gas sampling (SITE)

    6

    Completed

    Well-head monitoring of VOCs

    5

    Completed

    PCB analysis

    9

    Completed

    Decision-support software

    6

    Completed

    Ground water sampling

    6

    Completed

    Explosives test kits

    4

    Completed

    TPH test kits (SITE)

    5

    In Peer review

    Sediments sampling (SITE)

    2

    Completed

    Lead-in-dust detection

    8

    New Project

  • Monitoring: Saving ResourcesThroughout the Cleanup ProcessLets get through characterization and on to cleanup

    8/3//01

    The Triad ApproachSystematic PlanningDynamic WorkplanningOn-Site Measurement Technologies

    8/3//01

    Characteristics of the TriadFully maximizing capabilities of field analytical instruments and rapid sampling toolsSystematic planning Meeting site or project-specific goals vs. prescriptive methods checklistsRelying on thorough advance planning/up-front understanding of the siteGlobal view of project, ultimate goalsDynamic or adaptive decision makingBringing together the right teamChanging perception Requirements for accurate, protective, and defensible decisionsTime, money, and quality

    8/3//01

    Recent Bioremediation ReportUse of Bioremediation at Superfund SitesDescribes site-specific applications of ex situ and in situ bioremediation at 104 Superfund sitesSummarizes contaminants and media treatedProvides available cost and performance dataAnalyzes trends over time48 pageshttp://clu-in.org/techpubs.htm

    8/3//01

    Superfund Site Types Most Commonly Treated by Bioremediation (FY 1982 FY 1999)1 Part 1 of 2322219138Wood PreservingPetroleum Refining, Reuse, and PipelineLandfill/ Disposal AreaUnderground/ Aboveground Storage TankPesticide Manufacturing/ Use/Storage05101520253035Number of Projects1Some sites are described by more than one site type.Total Projects = 104Site Type

    8/3//01

    Superfund Site Types Most Commonly Treated by Bioremediation (FY 1982 FY 1999)1 Part 2 of 21Some sites are described by more than one site type.Site TypeFire/Crash Training AreaMunitions Manufacturing or StorageSurface Impound-ment or LagoonVehicle MaintenanceDrum Storage/DisposalNumber of ProjectsTotal Projects = 1047777605101520253035

    8/3//01

    Contaminant Groups Treated by Bioremediation Technologies at Superfund Sites (FY 82 FY 99) Ex Situ Source Treatment TechnologiesBiopile3Slurry Phase2Other3Land Treatment33Composting8

    8/3//01

    Example Windrow Composting SystemFormWindrowsWith soil and AmendmentsPeriodicTurning ofWindrowWindrowMonitoringCompostAnalysisWindrowDisassemblyAndDispositionExcavateandScreen Soils

    8/3//01

    Contaminant Groups Treated by Bioremediation Technologies at Superfund Sites (FY 82 FY 99) In Situ TreatmentOther9Bioventing24Slurry Phase2Source ControlBiosparging3Injection/Recirculation17Groundwater

    8/3//01

    In Situ Treatment TechnologiesSoilEstablishedBioventing (fuels)SVE (fuels, organics) Solidification/stabilization (metals) Soil washingEmergingElectrokinetics (metals)Phytoremediation (fuels, metals)Thermal treatment (fuels, organics)

    8/3//01

    Superfund Remedial Actions:Percentage of Soil Treated by Technology Type (FY 1982 - FY 1999)Other Ex Situ 7%Bioremediation (Ex Situ) 7%Neutralization (Ex Situ) 7%Solidification/Stabilization (Ex Situ) 8%Solidification/Stabilization (In Situ) 6%Other In Situ 3%Bioremediation (In Situ) 5%Soil Vapor Extraction (In Situ) 57%http://cluin.org/asr

    8/3//01

    Soil Vapor ExtractionEnhancements/AdaptationsMODIFY OPERATIONBioventing

    IMPROVE PLACEMENTDirectional Drilling

    INTEGRATE WITH GROUNDWATERDual-Phase ExtractionAir SpargingIMPROVE RECOVERYPneumatic FracturingHydraulic FracturingThermal ProcessesRadio-Frequency HeatingElectrical Resistance HeatingSteam/Hot Water InjectionConduction

    8/3//01

    PhytoremediationDescription Use of plants to remove, destroy or sequester contaminantsApplicable to wide range of media and contaminantsHydraulic control and remediationMainly poplars for chlorinated solvents in ground waterGrasses for fuels, metals in soilContaminants Treated VOCs SVOCs Fuels Explosives Inorganicshttp://clu-in.org/techfocus/

    8/3//01

    PhytoremediationProsIn situ, permanent solutionLow capital and operating costsLow maintenanceHigh hydraulic pumping pressuresReduced volume for disposalTreats wide variety of contaminants

    ConsShallow, low- to moderate-level contaminationLack of performance dataTreatment durationSeasonally, climatically dependentNot applicable to all mixed wastesNeed to displace existing facilities

    http://clu-in.org/techfocus/

    8/3//01

    In Situ Treatment TechnologiesGroundwaterEstablishedAir Sparging (fuels, organics)Bioslurping (fuels, organics)Enhanced Bioremediation (organics, fuels)Multiphase Extraction (fuels, organics)

    Emerging Chemical oxidation (fuels, organics)Electrokinetics (metals)Phytoremediation (organics)Recirculating Wells (fuels, organics)Steam stripping (fuels, organics)Permeable Reactive Barriers (metals, organics)http://clu-in.org/techfocus/

    8/3//01

    Biodegradation MechanismsTypically Occurring with Enhanced In Situ Bioremediation of CAHs*Chlorinated aliphatic hydrocarbons

    CAH*Aerobic OxidationAnaerobic Reductive DechlorinationDirectCometabolicDirectCometabolicPCETCEDCEVCYesTrichloroethaneDichloroethaneYesC. tetrachlorideChloroformMethylene chlorideYes

    CAH*Aerobic OxidationAnaerobic Reductive DechlorinationDirectCometabolicDirectCometabolicPCETCEYesDCEYesVCYesYesTrichloroethaneYesDichloroethaneYesC. tetrachlorideChloroformYesMethylene chlorideYesYes

    CAH*Aerobic OxidationAnaerobic Reductive DechlorinationDirectCometabolicDirectCometabolicPCEYesYesTCEYesYesYesDCEYesYesYesVCYesYesYesYesTrichloroethaneYesYesDichloroethaneYesYesC. tetrachlorideYesChloroformYesYesMethylene chlorideYesYesYesYes

    8/3//01

    Example In Situ GroundwaterBioremediation System

    8/3//01

    Permeable Reactive BarriersTrendsOther reactive media Other contaminantsDeeper contaminant plumesNeedsLongevity of wall reactivityPermeability changes due to precipitationLong term performance monitoring data

    Contaminants Treated Chlorinated solvents Metals and radionuclideshttp://clu-in.org/techfocus/

    8/3//01

    Remediation Technologies Development Forum (RTDF)Permeable Reactive Barrier (PRB) Installation Profileshttp://www.rtdf.org

    Contaminants Treated

    Full-Scale

    Pilot Scale

    Chlorinated Solvents

    23

    13

    Metals and Inorganics

    8

    2

    Other Organic Compounds

    6

    1

    Radionuclides

    3

    2

    Nutrients

    1

    1

    Fuel Hydrocarbons

    0

    2

    8/3//01

    Natural Attenuation Processes include a variety of physical, chemical, or biological processes that act without human intervention to reduce the mass, toxicity, mobility, volume, or concentration of contaminants in soil or groundwater. These in-situ proces

Recommended

View more >