DOE
Fernald Facility, OH
1997 Alan B. Cash 619-552-9902 |
Solvent
extraction
Terra Kleen San Diego, CA |
Soil | PCBs | Ex Situ | Solvent Extraction [An EPA SITE Program document will be produced.] | ||
EPA Removal Action Traband Warehouse PCBs, OK 2/90 to 9/90 Pat Hammack |
Solvent
extraction Terra-Clean, Inc. |
Solids | PCBs Initial: 7,500 ppm | Solvent addition | Excavation | Treated solid; concentrated contaminant | Storage management complex. |
LLNL,
Livermore, CA 1997 John Bowers |
Chemical
Oxidation Lawrence Livermore National Laboratory Livermore |
Soil | Low-Level Mixed Wastes, Solvents | Fiscal Year 1997 Demonstration of Omnivorous Non-Thermal Mixed Waste Treatment: Direct Chemical Oxidation of Organic Solids and Liquids Using Peroxydisulfate UCRL-ID-129826 | |||
EPA
Removal Action Stanford Pesticide Site No. 1, AZ 3/20/87 to 11/4/87 Dan Shane |
Chemical
treatment -alkaline hydrolysis EPA removal contractor |
Soil (200 yd3) | Methyl parathion Input: 24.2 ppm Output: 0.05 ppm |
pH: 9.0 Moisture: wet Additives to soil: soda ash, water, activated carbon |
Tilling (in situ, 3 times per week) |
Treated soil | Pesticide manufacturing use/storage. Farm equipment storage. |
EPA
Remedial Action Palmetto Wood Preserving, SC 9/28/88 to 2/8/89 McKenzie Mallary (404) 347-7791 |
Chemical
treatment and soil washing; reduction of hexavalent chromium to trivalent chromium En-site (ERCS contractor) Atlanta, GA |
Soil (13,000 yd3) | Input: Arsenic - 2 to 6,200 ppm Chromium - 4 to 6,200 ppm Output: Arsenic - less than 1 ppm Chromium - 627 ppm |
Soil - Batch process Treatment for aqueous waste from soil washing - 25 gpm pH - 2 to 9 |
(1) Used sodium meta- phosphate to lower pH to 2.0 and wash the chromium from the soil, (2) separated the soil and solution, (3) solidified the soils, and (4) used the ferrous ion method of reduction to precipitate the chromium from solution in trivalent form | Soil - solidified and
replaced on-site Wastewater -permitted discharge to the sewer line Sludge - off-site disposal |
This treatment system is unique in the method of generating ferrous ion for the reducing step. The wastestream passed through an electrolytic cell containing consumable steel electrodes where the ferrous ions were electrically introduced into the wastestream. |
EPA
Removal Action PBM Enterprises, MI 3/25/85 to 10/28/85 Ross Powers |
Chemical
Treatment: Neutralization with hypochlorite process Mid- American Environ- mental Service Riverdale, IL |
Film chips (464 tons or 1,280 yd3) | Cyanide Input: 200 ppm Output: 20 ppm |
Time: 2 to 3 hours Additives: sodium hydroxide |
Agitation | Rinse water, runoff, and
waste hypochlorite - treated off-site Treated chips - landfilled (Subtitle D) |
Silver recovery facility. |
EPA
Removal Action Zhiegner Refining Company 2/93 to 6/93 Dilshad Perera |
Chemical
treatment ENSCO |
Solid (100 lb) | Mercury initial concentration >10% mercury Final concentration of mercury in recyclable precipitate was >80%. Less than 260 ppm if mercury in tank nonrecycled salt. |
Added salt to precipitate the mercury | Mercury pretreatment precipitated mercury salts into mercury sulfide so that the mercury can be recovered and recycled | Residual salts containing less than 260 ppm mercury were incinerated off-site. | Precious metal recovery site. |
EPA
Demo Midwest, California, Australia 1987 S. Jackson Hubbard (513) 569-7507 |
SAREX chemical fixation process | Soil & sludge | Low level metals & organics | Catalyzed by lime and proprietary reagents | Blending with reagent, mixing, heating, curing | Vapors are scrubbed and processed before release | Water content is not an obstacle although it may cause steaming. |
EPA
Demo Grand Calumet River Site, IL 1992 Mark Meckes |
BESTTM solvent extraction process | Oily sludges & soil | PCBs, PAHs, pesticides | pH >10 | Hydrophobic and hydrophilic cycles by controlling temperature | Separation into oil, water, and clean solids | Solvent flammable -must be sealed from air. |
EPA
SITE Demo, Research Facility, Edison, NJ, 1992 Laurel Staley, USEPA, (513) 569-7863; Theodore Trowbridge, Dehydr-Tech Corporation |
Chemical
Extraction; Carver- Greenfield Process(R) for Solvent Extraction of wet, oily wastes; Dehydro- Tech Corporation |
Sludge | Spent petroleum drilling fluids | Waste is first mixed with a low cost hydro- carbon solvent. Solids are centrifuged away from the solvent, followed by "desol- ventizing," an operation that evaporates residual solvent. | The resulting water product required treatment due to the presence of small amounts of light organics and solvent. | Normally, the resulting water product may be disposed of at a local publicly owned treatment works. | |
United
Creosoting, Conroe, TX Mark Meckes, USEPA, (513) 569-7348; Chris Shallice, CF Systems Corporation/ Morrison Knudsen, (216) 523-6581 |
Chemical
Extraction; CF Systems Corporation/ Morrison Knudsen liquified gas solvent extraction (LG-SX) technology |
Soil (80,000 yd3) | Oil, grease, and PAHs | Uses liquefied gas (such as propane) solvent | |||
DOE
pilot-scale test, Idaho National Engineering Laboratory Robert Montgomery, EG&G Idaho, (208) 525-3937 |
Chemical Extraction (Separation / Chemical Extraction) | Soil | Radionuclides, metals | Approxia- mtely 30% of soil matrix was co-dissolved in order to achieve release of most of the cesium-137. | Soils are screened, classified, and placed into leaching unit with hot nitric acid. | Disposal options include solidification, calcining leachate, and storage | Test results indicated excellent removal efficiencies for cobalt-60 and chromium |
SUPERFUND
Remedial Action, Arrowhead Refinery Co., 1994 & 1995 Edwin Smith, USEPA, (312) 353-6571 |
Chemical Extraction (Solvent extraction) | Soil 7,000 yd3 | Halogenated volatiles, PCBs, PAHs, solvents, heavy metals (lead) | ||||
Marengo,
OH
1997 Carl Magnell 614-297-0365
|
Solvated
Electron Technology (SET™)
Commodore Environmental Columbus, OH |
Soil | PCBs | Ex Situ | Solvated Electron Treatment of Chlorinated Organics [An EPA SITE Program document will be produced.] | ||
EPA
SITE Demo: Naval Air Station North Island Site 4, San Diego, CA, May to June 1994 Mark Meckes, EPA, National Risk Management Research, (513) 569-7348 |
Chemical
Extraction Terra-Kleen Response Group, Inc |
Soil | PCBs, chlorinated pesticides, PAHs, penta- chlorophenol, cresote, poly- chlorinated dibenzo- p-dioxins (PCDD), polychlorinated dibenzofurans | PCB Aroclor 1260 concen- trations were reduced from a maximum of 170 milli-grams per kilogram (mg/kg) in untreated soil to less than 2 mg/kg in treated soil. The average removal efficiency was 98.39 percent. | Uses amines (usually triethyl amine). | ||
EPA
Removal Action General Refining Company, GA 8/86 to 10/86 and 1/87 to 2/87 Shane Hitchcock |
Solvent extraction/ Resource Conservation Technology Company Bellevue, WA | Sludge (3,448 tons) | Input: PCB - 5.0 ppm Lead - 10,000 ppm Output: PCB - insignificant Lead - concentrated in solids |
Continuous operation Time: 2 hours Additives: Sodium hydroxide Triethy- lamine |
Excavation Screening Neutrali- zation Size Reduction Mixing | Oil - used as fuel for kiln Water - treated, discharged off-site Solids - solidified and disposed of on-site |
The oil recovered from the extractions process could not be sold because of an elevated metals content. The solvent could not be recovered because of leaks in system seals. The unit required a relatively uniform material so materials handling of the sludges proved difficult in the beginning of the project. The lead-bearing solids produced by the dryer also required special handling. Finally, deterrents in the sludge hindered oil/water separation. |
EPA
Removal Action Vineland Chemical Company, NJ 12/92 Don Graham |
Chemical
treatment ENSCO |
Solid (100 lb) | Mercury initial concentration >10% mercury Final concentration of mercury in recyclable precipitate was >80%. Less than 260 ppm of mercury in nonrecycled salt. |
Added salt to precipitate the mercury | Mercury pretreatment precipitated mercury salts into mercury sulfide so that the mercury can be recovered and recycled | Residual salts containing less than 260 ppm mercury were incinerated off-site | First known Superfund site where this process has been applied. |
EPA
Removal Action Avtex Fibers, VA 4/90 to 8/91 Vincent Zenone |
Chemical
treatment (oxidation using NaClO) OH Materials, Findlay, OH (ERCS contractor) |
Sludge/ water from storage unit (2 million gallons) | Carbon disulfide Criteria: =< 10 ppm -carbon disulfide in the effluent Input: 50 to 200,000 ppm carbon disulfide Output: =< 10 ppm -carbon disulfide |
Batch operation average
retention time - 1 hour pH - 10 Additives: sodium hypochloride The retention time and reagent feed rates increased with increasing concen- tration of sludge in the contaminated water. |
Pumping | Salts from the reaction were removed with flocculation and clarification at existing treatment plant, pH adjustment | Carbon disulfide is unstable and will be found
with other contaminants in aqueous wastestream. For additional information on this project, see the Removal Close Out Report available from EPA Region III or OH Materials. |
EPA
& Navy Demo EPA Lab, NJ Deh Bin Chan |
Chemical detoxification of chlorinated aromatic compounds | Soil | Dioxin, herbicides, chlorinated aromatic compounds. 99.9% decontami- nation achieved | Soil heated to 100-150 °C if dehydrated | Excavation, Water content assessed. | Products are not toxic nor biodegradable | Incineration cheaper in some cases. |
EPA
Demo Douglassville, PA 10/87 Paul R. DePercin |
Chemical treatment & immobi- lization | Soil, sediments, & sludge | Organic compounds, heavy metals, oil, & grease | In/ex situ. Sediments - underwater. Batch process at 120 tons/hour. | Blending | Hardened concrete- like mass | Application Analysis Report, EPA/540/A5- 89/001; Technology Evaluation Report, EPA/540/5- 89/00/a |
EPA
Demo 1992 Michelle Simon |
RENEUTM extraction technology | Soil | Organics up to 325,000 ppm | Operated under vacuum - 5-45 tons/hour | Sand, clay, and soil up to 3 in. diameter | Clean soil backfilled | Proprietary, azeotropic fluid to extract contaminant from soil. |
Star
Enterprise, Port Arthur, TX, March 1991 to March 1992 Mark Meckes, USEPA, (513) 569-7348; Chris Shallice, CF Systems Corporation Morrison Knudsen, (216) 523-6581 |
Chemical
Extraction; CF Systems Corporation Morrison Knudsen liquified gas solvent extraction (LG-SX) technology |
Sludge | K- and F- wastes, PCBs | Uses liquefied gas (such as propane) solvent | Following heavy metals fixation, the treated solids were disposed of in a Class I landfill | ||
EPA
Demo New Bedford Harbor, MA & O'Connor Site, ME 3/91 to 3/92 Laurel Staley |
Solvent extraction | Soil, sludge, and waste water | PCB 300-2,500 ppm 90-98% removal | Phase separation with solvent, solvent recovery | Tray tower for water; extractor/ decantors for solids and semi-solids | Heavy metal fixation, then Class I landfill | Applicable to VOCs, SVOCs, PAHs, PCBs, PCP, and dioxins. |
EPA
Demo Coleman-Evans Site, FL Norma Lewis |
Catalytic ozone oxidation with soil washing | Soil, sludge, & ground water | Organics - up to 20,000 ppm | Soil washing enhanced by ultrasound | Soil particles greater than 1 inch are crushed | Oxidation of wastewater, carbon for off-gas | Excalibur Technology. $92
to $170/m3 |
EPA
Remedial Action Wide Beach Development, NY 9/90 to 9/91 Herb King |
Dehaloge-
nation/ APEG dechlorination Soil Tech Denver, CO |
Soil (40,000 yd3) | Criteria: PCBs (Aroclor 1254)- <10 ppm (1 composite sample/day) Input: 10 to 120 ppm PCB Output: |
Continuous process 8 tons/hour 200 to 580 °C (450 to 1,100 °F) Ambient pH and moisture Additives - Alkaline polyethylene glycol (APEG) |
Excavation Screening Staging | Treated soil -disposed of on-site | If on-site disposal is planned, perform tests
of the treated material appropriate to intended use. For further information on this dechlorination project, see the Demonstration Test Report produced by EPA, Region II. |
PWC Guam Jess Lizama |
Dehalogenation | Soil | 2,500 ppm PCB average Levels attained: <10 ppm |
||||
Montana
Pole Butte, MT |
Dehalo- genation | Soil | Dioxin, Furans/Oil <84 ppm Attained: <1 ppb |
||||
Economy Products Omaha, NE | Dehalo- genation | Soil | TCDD, 2, 4-D, 2, 4, 5-T (liquid) Beginning levels: 1.3 ppm 17,800 ppm 2,800 ppm Levels attained: Non-detect 334 ppm 55 ppm |
||||
EPA
Removal Action Signo Trading International, Inc., NY 10/20/87 to 10/21/87 Charles Fitzsimmons |
KPEG
dechlorination Galson Remediation, Syracuse, NY |
Sludge (15 gallons) | Dioxin Input: 135 ppm Output: 1 ppb |
Temperature: 150 °C Time: Overnight |
Excavation | Incineration of residuals (without dioxin contami- nation) at treatment, storage, and disposal facility | Waste management facility warehouse. |
Los
Alamos National Laboratory (LANL) Coyne Prenger |
Magnetic Separation | Soil | |||||
DOE
Demo INEL, ID 1992 Robert Montgomery |
Physical separation/ chemical extraction | Sediments | Radionuclides & metals | Contami- nants removed from leachate by ion exchange, reverse osmosis, precipitation, or evaporation | Screening, segregation, leaching with hot nitric acid | Solidification, calcining leachate, or storage | Difficulty removing Cesium-137. Cost: $1,000/yd3 |
EPA
Demo Iron Mountain Mine Site, CA 1990 to 1991 S. Jackson Hubbard (513) 569-7507 |
Separation: Precipitation, microfiltration & sludge dewatering | Sludge & leachable soil | Heavy metals, non-volatile organics & solvents, oil, grease, pesticides, bacteria, solids | Up to 5% solids, 30 lb/hour of solids, 10 gpm of wastewater | Heavy metal precipi- tation, filtration, concentrated stream dewatering | Filter cakes 40-60% solids, water recycled | EXXFLOW and EXXPRESS fabric microfilter and filter press. |
Hunter's
Point Shipyard, San Francisco, CA
1998 Rob Stephenson 604-273-0311 |
Soil Washing
ChemTech Analysis, Inc. Klohn-Crippen Consultants Ltd. Richmond, BC, Canada |
Soil | Cu, Cr, Pb, Z | Ex situ | “Soil Washing System Employs Aggressive Conditions to Handle Organics. Inorganics,” HazTech News, 13:6, 9 Apr 1998 | ||
DOE
Mound Facility, Miamisburg, OH
1997 Michael Dunn |
Soil Washing
Selective Environmental Technologies, Inc. (Selentec) Atlanta, GA Michael Dunn |
Soil | Pu, Thorium | Ex situ | “Mound Pilots Process That Washes Soil Clean,” New Directions, Jun/Jul 1997 (p 1 & 6) | ||
Ft. Polk,
LA US Army Environmental Center Naval Facilities Engineering Service Center |
Soil Washing featuring physical separation and acid leaching for the recovery and recycle of lead from small arm range soil. | Soil | Lead: 3500 mg/kg | After treatment: 200 mg/kg total lead 2 mg/L TCLP |
$170 per ton for 10,000 ton site | ||
Twin
Cities AAP New Brighton, MN Michael D. Royer |
Soil Washing featuring gravity separation, particle size classification, metal leaching, and lead recovery | Soil | Targets for background remediation: Cr, Cu, Hg, and Ni. Some batches reached state remediation goals. | ||||
EPA
Demo Santa Maria, CA 5/92 Annette Gatchett |
Biogenesis soil washing process | Soil | Organics - oil, fuel, PCBs, PAHs 99% hydrocarbon removal with initial concentration up to 15,000 ppm | 30-65 tons/hour | Agitated in unit with surfactant | Washwater - oil/water separator, filter, and bioreactor | Self-contained mobile soil washing unit. |
Army
Saginaw Bay Confined Disposal Facility, MI 10/91 to 6/4/92 Jim Galloway |
Soil washing; water
with flocculent and surfactant as an additive Bermann USA, Stafford Springs, CT |
Sediment (150 yd3) | PCBs | 30 yd3 of sediment treated per day | Dredging Screening Size reduction |
Residuals were left at the facility Wastewater discharged to confined disposal facility | Forced cold-weather shutdown is a limitation. |
DOE
Demo Clemson Technical Center, SC Doug Mackensie (208) 526-6265 |
Enhanced Soil Washing with Soil*EXSM | Soil & debris | Heavy metals, radionuclides, and organics | Particles smaller than 2 inches | Screening, dissolution, surfactant addition | Clean soil & debris, recycle water, off-gas from organics & concentrated contami- nants | Selective extraction/ dissolution. |
EPA
& DOE Demo Montclair, West Orange & Glen Ridge Sites, NJ Mike Eagle |
Soil washer for radioactive soil | Soils | Radionuclides - 56% volume reduction 40 pCu/g to 11 pCu/g | 1 ton/hour | Attrition mills and hydro- classifiers | Filter press and off-site disposal | Plant is being optimized for further demonstration. |
EPA
Demo Toronto Port Industrial District, Canada 1991 Teri Richardson |
Soil washing/ Soil recycling | Soils | Organics and Inorganics | Inorganics extracted; organics extracted and biodegraded. | Soil washing, metal dissolution, chemical hydrolysis with biodegra- dation | Metals recovered in pure
form. Reusable fill |
90% reduction in PAHs. |
Army
Demo Sacramento Army Depot, CA 1992 Marlin Mezquita |
Soil washing | Oxidation lagoon soils (12,000 yd3) | Cd, Ni, Pb, Cu | Soil treated with wash reagent to extract contaminants | Wash liquid neutralized with caustic to precipitate metals | Precipitated metals landfilled | Contaminated to depth of 18 inches. |
DOE
Demo Fernald Site, OH Kimberly Nonfer |
Soil washing | Soil | Uranium | Soil and leachant attrition scrubbed for 1 minute to solubilize uranium | Attrition scrubbing, gravity separation, screening | Wastewater treatment required | Commercially available. |
EPA
Demo Alaska Battery Enterprises Superfund Site, AK 1992 Hugh Masters |
Soil washing plant | Soil | Heavy metals, radionuclides | Rate dependent on percentage of soil fines - up to 20 tons/hour | Deagglo- meration, density separation, and material sizing | Concentrated contaminant con- tainerized, liquid recirculated clean soil | Process modified to accommodate unexpectedly high levels of lead and battery casings. |
EPA
Demo MacGillis & Gibbs Superfund Site, MN 1989 Mary Stinson |
Soil washing system (volume reduction), process water treated in a bio-reactor, fines treated in a slurry bioreactor. | Soil | Removal: 89% PCP |
500 lb/hour 24 hour/day |
Debris prescreening, soil mixed with water, separation (operations similar to mineral processing operations) | Wastewater treated in fixed film bioreactor | Patented water based volume reduction process. |
EPA
Demo Pensacola, FL 11/92 Teri Richardson |
Soil washing: Volume reduction unit | Soils | Organics - creosote, PCP, pesticides, PAHs, VOCs, SVOCs, metals | Up to 100 lb/hour | Particle separation and solubilization | Concentrated contaminant | Pilot-scale mobile soil washing unit. |
Toronto
Port Industrial Dist. Ontario, Canada Dennis Lang |
Soil washing (volume reduction), metal dissolution, and chemical hydrolysis with biodegradation (organics) | Soil | 52 ppm Naphthalene; 10 ppm benzo(a)-pyrene Levels attained: <5ppm; 2.6ppm |
||||
Escambia
Wood Treating Company Superfund Site, Pensacola, FL Terri
Richardson |
Soil Washing featuring particle size classification and surfactant addition | Soil | From 550-1,700 ppm PAHs 48-210 ppm PCP to 45 ppm PAHs 3 ppm PCPs |
$151/metric ton ($137/ton) (projected) | |||
Installation Restoration (IR) Site 4, NAS Northern Island, San Diego, CA | Terra-Kleen Soil Washing combined with SVE | Soil | Reduced PCB levels in soil from 144 mg/kg to 1.7 mg/kg on average | $500,000 for the field-scale treatability demonstration . | |||
Escambia
Wood Treating Company Superfund Site, Pensacola, FL Terri
Richardson |
Soil Washing featuring particle size classification and surfactant addition | Soil | From 550-1,700 ppm PAHs 48-210 ppm PCP to 45 ppm PAHs 3 ppm PCPs |
$151/metric ton ($137/ton) (projected) | |||
EPA
Remedial Action Upjohn Manufacturing Company, PR 1/83 to 3/88 Alison Hess |
SVE Terra Vac, Inc., Costa Mesa, CA |
Soil | Criteria: Initial concentrations - 70 ppm (carbon tetrachloride to air) Final concentrations - nondetect (<0.002 ppm) |
Ambient conditions | Ex situ | Discharge of soil vapors through 30-ft stack | For further information on this application, see the Applications Analysis Report for the Terra Vac In Situ Vacuum Extraction System (EPA/540/A5- 89/003). |
EPA
Removal Action Basket Creek Surface Impoundment, GA 11/92 to 2/93 Don Rigger |
Vacuum
extraction of soil pile with horizontal wells (ex situ) OHMaterials, Inc. |
Soil (2,000 yd3) | VOCs TCE, PCE, MEK, MIBK, BTEX High 33% VOCs Average 1 to 5% Criteria: PCE - 0.7 mg/L TCLP |
Vacuum pressure monitored. 1,300-CFM/ manifold. 3 manifolds 6 to 7 wells/ manifolds | Surface impoundment used for disposal of waste solvents. Built an enclosure over the site. Excavated the soil and screened it with a power screen. Stacked on PVC extraction wells. Recovered VOCs with duct work and fan. Vapors incinerated. | Residual soils and rejects from screening met TCLP limits and were disposed of as nonhazardous in RCRA Subtitle D landfill. Incinerated 70,000 lb of VOCs. | $2M total costs. Permeability in situ soil was not good at first. Excavation and ex situ treatment improved permeability. Shouldn't rule out if can't be done in situ. |
Installation Restoration (IR) Site 11, NAS Northern Island, San Diego, CA | Terra Vac pilot SVE/ Air Sparging/ Catalytic Oxidation System | Soil | Up to 250 pounds (33 gallons) per day of VOCs was effectively removed from the vadose zone and subsequently destroyed. | ||||
DOE
Demo Lawrence Livermore National Laboratory, CA 1991 Jesse L. Yow, Jr. |
Solar Detoxification | Ground water | VOCs | Exposed to sunlight & nontoxic catalyst (TiO2) | Pumping, solar detox, pH adjustment, catalyst addition | Catalyst filtered out and water sent for secondary treatment | Salts in ground water reduce efficiency. |
Tyndall Air Force Base | Solar Detoxification | Ground water | Jet fuel | Exposed to sunlight & nontoxic catalyst (TiO2) | Pumping, solar detox, pH adjustment, catalyst addition | Catalyst filtered out and water sent for secondary treatment | Salts in ground water reduce efficiency. |
Savannah
River Site Incinerator, Aiken, SC
1998 D. Singh |
Solidification/
stabilization
Argonne National Laboratory Argonne, IL |
Soil, | Radioactive Ash | Ex situ | Phosphate Bonded Solidification of Radioactive Incinerator Wastes WSRC-MS-99-00314 | ||
Midvale
Slag Superfund Site, Midvale, UT
1997 Robert Kuhn 914-623-2333 |
Solidification/
stabilization
Solucorp Saddle Brook, |
Soil, | As, Cd, Pb | Ex situ | Molecular Bonding System®, Solucorp Industries Ltd. EPA 540-R-97-507 | ||
ORNL,
Oak Ridge, TN
1997 Catherine Mattus 423-574-6793 h6z@ornl.gov
|
Solidification/
stabilization
Oak Ridge National Laboratory |
Soil, | Mixed Wastes: Cd, Pb, Radionulides | Ex situ | Demonstration of Mixed Waste Debris Macroencap-sulation Using Sulfur Polymer Cement [fact sheet] | ||
Rocky
Mountain Arsenal
1997 Richard W. McManus 214-393-6965 |
Solidification/
stabilization
SOUND/epic Anchorage, AK |
Soil, | Na, Cu, K, Nitrate, Pesticides | Ex situ | Dispersion by Chemical Reaction Testing of Rocky Mountain Arsenal Basin F Waste Soils CRREL Special Report 97-3 | ||
EPA SITE
Demo Robins AFB, Macon, GA 8/91 Terry Lyons |
Solidification/ stabilization | Soil, sludge, liquid | Organics and inorganics | Uses proprietary bonding agents | Large debris must be prescreened | Non-leaching high-strength monolith | Process can be applied in situ. |
EPA SITE
Demo Selma Pressure Treating Selma, CA 11/90 Edward Bates |
Solidification/ stabilization with silicate compounds | Ground water, soil, sludge | Organics and inorganics | Silicate compounds | Pretreatment separation of coarse and fine materials | PCP leachate concen- trations reduced up to 96%. As, Cr, and Cu immobilized. | Applied to a wide variety of hazardous soils, sludges, and wastewaters. |
EPA
SITE Demo Portable Equip. Salvage Co. Clackamas, OR 9/89 Edwin Barth |
Chemfix process - solidification/ stabilization | Soil & Sludge | Solid waste | Uses soluble silicates and silicate- settling agents | Blend waste with dry alumina, calcium, and silica-based reagents | Produces friable solids. Cu and Pb TCLP extracts were reduced 94-99% | Applicable to electroplating wastes, electric arc furnace dust. |
Navy
Demo Naval Const. Battalion Ctr. Port Hueneme, CA 2/91 to 2/92 Jeff Heath |
Solidification of Spent blasting | Blasting wastes containing abrasives, grit, sands | Lead, copper, and heavy metals | About 2 months required for design | Mixing of asphalt and other aggregates | <1% inert debris (wood and metal scrap) is produced | Estimated cost: $85/ton of waste. |
Imperial
Oil Co./ Champion Chemical Co. Superfund Site Morganville, NJ 12/88 S. Jackson Hubbard |
Soliditech solidification/ stabilization process | Soil, sludge | Inorganics and organics, metals, ore, grease | Add water, Urrichem (proprietary additives), and pozzolanic material (fly ash or kiln dust) | Screen waste and introduce into batch mixer | Heavy metals in untreated waste were immobilized. VOCs not detected in treated waste. | pH of untreated waste was 3.4 to 7.9. Treated waste had pH 11.7 to 12. |
Small
Arms Range, Naval Air Station Mayport, FL 1990 Barbara Nelson |
Stabilization of small arms range | Soil | Lead and other heavy metals | Soil is mixed with sodium silicate, portland cement, and water | Screen soil to remove bullets (to be recycled) and other debris (landfill) | TCLP reduced from 720 to 0.9 ppm Pb, 7 to 0.2 ppm Cu, 4.1 to 0.2 ppm Zn | Treated soil is returned to its original location. Estimated cost $490/ton. |
DOI
Demo Salt Lake City Research Center K.S. Gritton |
Vitrification: Treatment of copper industry waste | Slags, dusts, sludges, liquids | Copper byproducts - arsenic, heavy metals | Acid in refinery waste is used to solubilize metals in flue dust, with subsequent metal recovery | Ex situ | Vitrification of arsenic sulfide leaves a dense, non-reactive, glass-like material | Emphasis is on recovery of metals, which are presently discarded. |
DOI
Demo Albany Metallurgy Research Center, OR Paul C. Turner (503) 967-5863 |
Vitrification furnace | Solids | Residues from Incineration of municipal waste | Electric arc furnace with water-cooled roof & sidewalls | Dedicated feeder and off-gas treatment. | Glassy slag and metallic phase | Slag is 3 times more dense; metallic phase is 10 times more dense. |
EPA
& DOE Demo Component Development & Integration Facility, MT 1991 Laurel Staley |
Plasma ARC vitrification | Soils & sludge | Organics & metals | 2,800-3,000 °F in plasma centrifugal furnace | Fed into sealed centrifuge & heated to 1,800 °F. Organics are evaporated. | Organic laden vapor stream and metals laden vitrified mass. | $750- $1,900/ton. |
Davis-Monthan
AFB. Brad Jones |
solidification/ stabilization | Dross and dross contaminated soil | Cd, Cr, and Pb | Dross and dross contaminated soil was mixed with 10% cement and 5% lime in pug mill. | Passed TCLP for all contaminants. | Cost: $100 per cubic yard. | |
Installation Restoration (IR) Site 2, NAS Northern Island, San Diego, CA | Western Product Recovery Group's (WPRG) Chemical Coordinate Bonding and Adsorption (CCBA) technology | Soil | Up to 250 pounds (33 gallons) per day of VOCs was effectively removed from the vadose zone and subsequently destroyed. | Contaminated soil is heated to a high temperature and mixed with clay. The clay's silicon matrix reacts with the metals to form metal silicates, which chemically fix the metals to the final treatment product. | Treated soil can be reused as on-site backfill or recycled as landscaping material, road base material, or aggregate for concrete material. |
Sources: Innovative Treatment Technologies: Annual Status Report ( Eighth and Tenth Editions, Nov. 1996 and Feb. 2001). Innovative Remediation Technologies: Field-Scale Demonstration Projects in North America (1st and 2nd Editions, Aug 1996 and Jun 2000).