CityChlor: presentatie Insitu Chemische Oxidatie (ISCO)

In Situ Chemische Oxidatie

Kansen en valkuilen

24 april 2012Jack Van Rossum, WeGroSan/HMVT

Titel van de presentatie | pagina 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


• 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

Voorstelling techniek


• Bodem:• Homogeniteit• Doorlatendheid• Grondwaterstand• Matrixbehoefte• Bufferend vermogen

• Verontreiniging• Eigenschappen• Concentraties• Puur product

Belangrijke parameters


• Snelle, robuuste techniek• Geschikt voor moeilijke verontreiniging en hoge

concentraties• Toepasbaar op moeilijke locaties• Geen beperkingen diepte• Diverse oxidanten mogelijk

Succesfactoren


Keuze oxidantCommon ISCO treated contaminants

Per-manganate

Activation Technique NoneChelated iron

activationIron/acid activation

Alkaline activation

Thermal activation

Iron activation

Peroxide activation

Ozone only

Light hydrocarbon fuels (gasoline, diesel, kerosene, jet Fair Good Good Excellent Excellent Excellent Excellent GoodHeavy hydrocarbon fuels (fuel oils, bunker oil, etc.) Poor Fair Fair Good Good Poor Good FairCreosote, coal tar, MGP residuals, or other PAH Good Good Good Good Good Fair Good GoodPolychlorinated biphenyls (PCBs) or polybrominated Not Fair Fair Fair Good Poor Fair Not Dioxins or furans Not Fair Fair Fair Good Poor Fair Not

BTEX Not Excellent Excellent Excellent Excellent Excellent Excellent ExcellentMethyl-tertbutylether (MTBE) Poor Good Good Excellent Excellent Excellent Excellent GoodTert-butyl Alcohol (TBA) Not Fair Fair Good Good Fair Good Fair

Tetrachloroethene (PCE) Excellent Excellent Excellent Excellent Excellent Excellent Excellent ExcellentTrichloroethene (TCE) Excellent Excellent Excellent Excellent Excellent Excellent Excellent ExcellentDichloroethenes (1,1-, cis-1,2-, and trans-1,2-) Excellent Excellent Excellent Excellent Excellent Excellent Excellent ExcellentVinyl Chloride Excellent Excellent Excellent Excellent Excellent Excellent Excellent ExcellentTetrachloroethanes (1,1,1,2- and 1,1,2,2-) Not Fair Poor Fair Fair Fair Fair FairTrichloroethanes (1,1,1- and 1,1,2-) Not Good Poor Good Good Fair Good GoodDichloroethanes (1,1- and 1,2-) Not Good Fair Good Good Fair Good GoodChloroethane Not Good Fair Good Good Fair Good GoodCarbon Tetrachloride Not Excellent Poor Excellent Fair Not Excellent Not Chloroform Not Good Poor Good Not Not Good PoorDichloromethane Not Good Poor Fair Not Not Fair PoorMethylene Chloride Not Good Poor Good Fair Poor Good Poor1-4-Dioxane Good Excellent Excellent Excellent Excellent Excellent Excellent Good

Pentachlorophenol (PCP) Good Good Good Good Good Fair Good GoodChlorophenols Good Good Good Excellent Excellent Good Excellent GoodChlorobenzene Poor Fair Fair Excellent Excellent Good Excellent FairDi and Trichlorobenzenes Poor Fair Fair Excellent Excellent Good Excellent FairHexachlorobenzene Not Fair Fair Good Good Fair Good Fair

RDX and HMX Good Good Good Good Good Good Good GoodTNT and DNT Poor Poor Poor Good Poor Poor Good PoorDi and Trinitrobenzenes Fair Fair Fair Fair Fair Fair Good FairMono and Dinitrophenols Good Good Good Good Good Good Good Good

Hydrogen Peroxide OzonePersulfate

Common Contaminant Mixtures

Chlorinated Aromatic Contaminants

Explosives, Energetics and Breakdown Products

Common Chlorinated Solvents, Stabilizers and their Breakdown Products

Common Specific Fuel Contaminants and Breakdown Pro ducts


Afweging locatiespecifiekOxidant

Per-manganate

Activation Method None -Chelated activation

Hydrogen peroxide only

Iron / acid amended activation

Alkaline activation

Thermal activation

Iron activation

Peroxide activation

pH range<5 Excellent Excellent Excellent Excellent Excellent Not Excellent Excellent Excellent5-6 Excellent Excellent Excellent Excellent Excellent Poor Excellent Excellent Excellent6-7 Excellent Excellent Excellent Good Good Fair Excellent Good Excellent7-8 Excellent Good Good Fair Fair Good Excellent Fair Good8-9 Excellent Good Good Poor Poor Excellent Good Poor Fair>9 Good Fair Poor Not Not Excellent Fair Not Poor

Alkalinity mg/L as CaCO 3

0-300 Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent300-1000 Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent

1000-3000 Excellent Good Good Good Good Excellent Good Good Good>3000 Excellent Good Fair Fair Fair Excellent Fair Fair Fair

Chloride Concentration (mg/L) 0-300 Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent

300-1000 Excellent Excellent Excellent Excellent Excellent Excellent Good Excellent Excellent1000-3000 Excellent Good Good Good Good Good Fair Good Good

3000-10000 Excellent Fair Fair Fair Fair Fair Poor Fair Fair>10000 Good Poor Poor Poor Poor Poor Poor Poor Poor

Amenability of oxidant approach to saturated zone focfoc>3.0% Not Not Not Not Not Poor Poor Poor Poor

foc<3.0% but foc>1.0% Poor Poor Poor Poor Poor Fair Fair Fair Fairfoc<1.0% but foc>0.3% Good Good Good Good Good Excellent Excellent Excellent Excellentfoc<0.3% but foc>0.1% Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent

foc<0.1% Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent ExcellentContaminant mass distribution

Very Low (<10 mg/kg or <100 mg/L) Good Excellent Excellent Excellent Excellent Good Good Good GoodLow (10-100 mg/kg or 0.1-1 mg/L) Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent

Moderate (100-1,000 mg/kg or 1-10 mg/L) Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent ExcellentHigh (1,000-10,000 mg/kg or 10-100 mg/L) Good Fair Good Good Good Good Good Good GoodVery high (>10,000 mg/kg or >100 mg/L) Good Poor Fair Fair Fair Good Good Fair Good

PersulfateOzone Hydrogen peroxide


Berekening matrixbehoefte


• Onrealistische saneringsdoelstelling• Onvoldoende vooronderzoek

• Bodemeigenschappen• Verontreiniging

• Ongewenste verspreiding• Snelheid reactie vs verspreiding oxidant• Ondeskundige uitvoering• Mobilisatie verontreiniging

Beperkingen / faalrisico’s


• Goed vooronderzoek• Labotesten (matrixbehoefte, oxidant; www.hmvt.nl/nod)• Pilootproef (injectietechniek, filterafstand, hoeveelheden, druk, aandachtspunten)• Realistische saneringsdoelstelling

Ontwerp ISCO


Portfolio / Referenties

Plaats


• Adres:• WeGroSan/HMVT• Vaartkant Rechts 27, Sint Lenaarts

• Contact / afspraak:• Jack Van Rossum• 03 – 609 55 30• [email protected]• www.wegrosan.be

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CityChlor: presentatie Insitu Chemische Oxidatie (ISCO)

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