CityChlor: presentatie Insitu Chemische Oxidatie (ISCO)

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CityChlor: presentatie Insitu Chemische Oxidatie (ISCO). Insitu aanpak van VOCl bronlocaties met behulp van ISCO. Hoe werkt het? Problemen en aandachtspunten

CityChlor: presentatie Insitu Chemische Oxidatie (ISCO). Insitu aanpak van VOCl bronlocaties met behulp van ISCO. Hoe werkt het? Problemen en aandachtspunten

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  • 1. In Situ Chemische Oxidatie Kansen en valkuilen 24 april 2012 Jack Van Rossum, WeGroSan/HMVT
  • 2. WeGroSan/HMVT • • • • • All round bodemsaneerder 2 Vestigingen, HMVT (NL) en WeGroSan/HMVT (B) Innovatief en doelmatig Ontwikkelen nieuwe saneringstechnieken Verschuiving van ‘traditioneel in-situ’ naar ISCO en injecties • Ook (industriële) lucht- en waterzuiveringen • Design & construct Titel van de presentatie | pagina 2
  • 3. Voorstelling techniek • In Situ Chemische Oxidatie (ISCO) • Oxidatie verontreiniging d.m.v. een sterke oxidatiemiddel • Injectie oxidant en in contact brengen met de verontreiniging • Verschillende oxidanten mogelijk • Verontreiniging kan behandeld worden vanaf maaiveld en onder obstakels • Snelle aanpak van de verontreiniging Titel van de presentatie | pagina 3
  • 4. Belangrijke parameters • Bodem: • Homogeniteit • Doorlatendheid • Grondwaterstand • Matrixbehoefte • Bufferend vermogen • Verontreiniging • Eigenschappen • Concentraties • Puur product Titel van de presentatie | pagina 4
  • 5. Succesfactoren • Snelle, robuuste techniek • Geschikt voor moeilijke verontreiniging en hoge concentraties • Toepasbaar op moeilijke locaties • Geen beperkingen diepte • Diverse oxidanten mogelijk Titel van de presentatie | pagina 5
  • 6. Keuze oxidant Common ISCO treated contaminants Activation Technique Permanganate None Hydrogen Peroxide Chelated iron activation Iron/acid activation Persulfate Alkaline activation Thermal activation Common Contaminant Mixtures Fair Good Good Excellent Excellent Poor Fair Fair Good Good Good Good Good Good Good Not Fair Fair Fair Good Not Fair Fair Fair Good Common Specific Fuel Contaminants and Breakdown Products Not BTEX Excellent Excellent Excellent Excellent Methyl-tertbutylether (MTBE) Poor Good Good Excellent Excellent Not Tert-butyl Alcohol (TBA) Fair Fair Good Good Common Chlorinated Solvents, Stabilizers and their Breakdown Products Tetrachloroethene (PCE) Excellent Excellent Excellent Excellent Excellent Trichloroethene (TCE) Excellent Excellent Excellent Excellent Excellent Dichloroethenes (1,1-, cis-1,2-, and trans-1,2-) Excellent Excellent Excellent Excellent Excellent Vinyl Chloride Excellent Excellent Excellent Excellent Excellent Not Tetrachloroethanes (1,1,1,2- and 1,1,2,2-) Fair Poor Fair Fair Not Trichloroethanes (1,1,1- and 1,1,2-) Good Poor Good Good Not Dichloroethanes (1,1- and 1,2-) Good Fair Good Good Not Chloroethane Good Fair Good Good Not Carbon Tetrachloride Excellent Poor Excellent Fair Not Not Chloroform Good Poor Good Not Not Dichloromethane Good Poor Fair Not Methylene Chloride Good Poor Good Fair 1-4-Dioxane Good Excellent Excellent Excellent Excellent Chlorinated Aromatic Contaminants Pentachlorophenol (PCP) Good Good Good Good Good Chlorophenols Good Good Good Excellent Excellent Chlorobenzene Poor Fair Fair Excellent Excellent Di and Trichlorobenzenes Poor Fair Fair Excellent Excellent Not Hexachlorobenzene Fair Fair Good Good Explosives, Energetics and Breakdown Products RDX and HMX Good Good Good Good Good TNT and DNT Poor Poor Poor Good Poor Titel van de presentatie | pagina 6 Di and Trinitrobenzenes Fair Fair Fair Fair Fair Mono and Dinitrophenols Good Good Good Good Good Light hydrocarbon fuels (gasoline, diesel, kerosene, jet Heavy hydrocarbon fuels (fuel oils, bunker oil, etc.) Creosote, coal tar, MGP residuals, or other PAH Polychlorinated biphenyls (PCBs) or polybrominated Dioxins or furans Ozone Iron activation Peroxide activation Ozone only Excellent Poor Fair Poor Poor Excellent Good Good Fair Fair Good Fair Good Not Not Excellent Excellent Fair Excellent Excellent Good Excellent Good Fair Excellent Excellent Excellent Excellent Fair Fair Fair Fair Not Not Not Poor Excellent Excellent Excellent Excellent Excellent Fair Good Good Good Excellent Good Fair Good Excellent Excellent Excellent Excellent Excellent Fair Good Good Good Not Poor Poor Poor Good Fair Good Good Good Fair Good Excellent Excellent Excellent Good Good Good Fair Fair Fair Good Poor Fair Good Good Good Good Good Good Poor Fair Good
  • 7. Afweging locatiespecifiek Oxidant Permanganate Ozone Activation Method None - Chelated activation Hydrogen peroxide only Iron / acid amended activation Alkaline activation Thermal activation Iron activation Peroxide activation Excellent Excellent Excellent Good Good Fair Excellent Excellent Excellent Good Good Poor Excellent Excellent Good Fair Poor Not Excellent Excellent Good Fair Poor Not Not Poor Fair Good Excellent Excellent Excellent Excellent Excellent Excellent Good Fair Excellent Excellent Good Fair Poor Not Excellent Excellent Excellent Good Fair Poor Excellent Excellent Good Good Excellent Excellent Good Fair Excellent Excellent Good Fair Excellent Excellent Good Fair Excellent Excellent Excellent Excellent Excellent Excellent Good Fair Excellent Excellent Good Fair Excellent Excellent Good Fair Excellent Excellent Good Fair Poor Excellent Excellent Good Fair Poor Excellent Excellent Good Fair Poor Excellent Excellent Good Fair Poor Excellent Excellent Good Fair Poor Excellent Good Fair Poor Poor Excellent Excellent Good Fair Poor Excellent Excellent Good Fair Poor Not Poor Good Excellent Excellent Not Poor Good Excellent Excellent Not Poor Good Excellent Excellent Not Poor Good Excellent Excellent Poor Fair Excellent Excellent Excellent Poor Fair Excellent Excellent Excellent Poor Fair Excellent Excellent Excellent Poor Fair Excellent Excellent Excellent Excellent Excellent Excellent Fair Poor Excellent Excellent Excellent Good Fair Excellent Excellent Excellent Good Fair Excellent Excellent Excellent Good Fair Good Excellent Excellent Good Good Good Excellent Excellent Good Good Good Excellent Excellent Good Fair Good Excellent Excellent Good Good pH range <5 Excellent 5-6 Excellent 6-7 Excellent 7-8 Excellent 8-9 Excellent >9 Good Alkalinity mg/L as CaCO3 0-300 Excellent 300-1000 Excellent 1000-3000 Excellent >3000 Excellent Chloride Concentration (mg/L) 0-300 Excellent 300-1000 Excellent 1000-3000 Excellent 3000-10000 Excellent >10000 Good Amenability of oxidant approach to saturated zone foc foc>3.0% Not foc<3.0% but foc>1.0% Poor foc<1.0% but foc>0.3% Good foc<0.3% but foc>0.1% Excellent foc<0.1% Excellent Contaminant mass distribution Very Low (<10 mg/kg or <100 mg/L) Good Low (10-100 mg/kg or 0.1-1 mg/L) Excellent Moderate (100-1,000 mg/kg or 1-10 mg/L) Excellent High (1,000-10,000 mg/kg or 10-100 mg/L) Good Very high (>10,000 mg/kg or >100 mg/L) Good Titel van de presentatie | pagina 7 Hydrogen peroxide Persulfate
  • 8. Berekening matrixbehoefte Titel van de presentatie | pagina 8
  • 9. Beperkingen / faalrisico’s • Onrealistische saneringsdoelstelling • Onvoldoende vooronderzoek • Bodemeigenschappen • Verontreiniging • Ongewenste verspreiding • Snelheid reactie vs verspreiding oxidant • Ondeskundige uitvoering • Mobilisatie verontreiniging Titel van de presentatie | pagina 9
  • 10. Ontwerp ISCO • Goed vooronderzoek • Labotesten (matrixbehoefte, oxidant; www.hmvt.nl/nod) • Pilootproef (injectietechniek, filterafstand, hoeveelheden, druk, aandachtspunten) • Realistische saneringsdoelstelling Titel van de presentatie | pagina 10
  • 11. Portfolio / Referenties Plaats Titel van de presentatie | pagina 11
  • 12. Contact • Adres: • WeGroSan/HMVT • Vaartkant Rechts 27, Sint Lenaarts • Contact / afspraak: • Jack Van Rossum • 03 – 609 55 30 • jvr@wegrosan.be • www.wegrosan.be Titel van de presentatie | pagina 12