chlorination Articles
-
TCE plume management through edible oil injection and natural attenuation
Two pilot-scale edible oil barriers were constructed in the upper portion of a 1,500 m long chlorinated solvent plume at Dover Air Force Base (AFB), DE. Edible soybean oil was injected into two 6.1 m-long barriers with monitoring wells spaced up to 4.6 m downgradient. Barrier 1 was treated by low pressure, direct injection of soybean oil into ten wells spaced 0.6 m apart. After eight months, a ...
-
TerraStryke Erdenhanced In-Situ Passive Pilot Study Chlorinated DNAPL Source Zone Former Dry Cleaner Operations, Stoney Creek, Ontario, Canada - Case Study
TerraStryke Products LLC (TerraStryke) develop-distribute biostimulation additives proven to cost-effectively enhance chlorinated volatile organic compound (cVOC) biotransformation safely and completely. Our patented biostimulation additive ERDENHANCED leverages existing biogeochemical conditions to facilitate chlorinated alkane/alkene destruction. ERDENHANCED is proven to expedite residual mass ...
-
Case study – TCE contamination pilot study
Site: Pilot Study – Trap & Treat® BOS 100® Colorado Contaminant: Chlorinated Solvent (TCE) in soil and groundwater Soil Type: Silty, sandy clays Injection Cost: ~$10,000 (material & labor) Treatment Area: ~1500 sq. ft. Plume Thickness: ~10 feet (32 to 42 feet bgs) Date of Treatment: 11/3/04 Notes: The pilot study for this large project in Colorado was conducted in the ...
-
CL-Out Pilot Study Vandenberg AFB - successful aerobic cometabolism
A pilot study of the applicability of CL-Out aerobic cometabolism of PCE and other chlorinated solvents was completed at Vandenberg Air Force Base. The pilot study consisted of injection in a single well and groundwater sampling at four surrounding wells to monitor the progress of bioremediation. During the pilot study, samples were analyzed for the contaminants and breakdown products, ...
-
Remediation of Chlorinated Solvents - Case Study
Project Location: SW Florida Client: DoE Contamination: TCE, PCE, Vinyl Chloride, Toluene Site Size: 4+ Acres Project Description: Over the previous 13 years, the incumbent remediation contractor had attempted to removed a large chlorinated solvent plume extending 20+ feet below grade, covering a footprint of approx. 4+ acres, with an elaborate vertical well pump-and-treat system. The ...
-
Treatment of Perchlorate and 1,1,1-Trichloroethane in Groundwater using Edible Oil Substrate (EOS®)
ABSTRACT: Laboratory studies and a pilot-scale field test are being conducted to evaluate the use of edible oil emulsions for biodegradation of perchlorate and 1,1,1-trichloroethane (1,1,1-TCA) in groundwater at a site in Maryland. The patented Edible Oil Substrate (EOS®) process is a cost-effective approach for stimulating in situ anaerobic biodegradation with little or no operation and ...
By Redox Tech
-
Natural attenuation: better than groundwater extraction?
Monitored natural attenuation (MNA) was evaluated and implemented in May 2000 as a replacement for groundwater extraction and treatment as the long-term remedy for a chlorinated ethene plume at a Superfund site in Washington (Lehmicke et al. 2000). MNA was approved because the plume met the first two lines of evidence in EPA’s protocol on natural attenuation for chlorinated solvents (U.S. EPA ...
-
Succesful Low-Cost Pilot Demonstrates Biostimulation Superior Kinetics and Long-Term Sustainability Utilizing Simple Delivery Approach
NASA Stennis Space Center is impacted with trichloroethene (TCE) in deep water bearing units outside the influence of existing pump and treat recovery systems. Efforts to identify a cost-effective and sustainable alternative to existing remediation strategies included the following in-situ Pilot designed to evaluate feasibility of enhanced reductive dechlorination. The additive chosen was the ...
-
Vinyl Chloride Bioremediation In Central Ohio - Case Study
Site Summary: CL-Out® bioremediation removed vinyl chloride and other chlorinated solvents found in ground water at a former automobile repair shop. The solvents were thought to have been released from an underground storage tank (UST). After the UST and associated contaminated soil were removed, CL-Out bioremediation was implemented to reduce the levels of contamination to site-specific ...
-
Groundwater contaminated with chlorinated solvents - Air force center for environmental excellence
LOCATION: Dover, DelawarePROJECT DATE: October 1999 to presentCLIENT: Air Force Center for Environmental Excellence (AFCEE) BACKGROUND: Groundwater contaminated with chlorinated solvents is a common problem to many US Air Force Bases. TSI in conjunction with Solutions Industrial & Environmental Services (Solutions-IES) of Raleigh, NC approached AFCEE with an innovative method utilizing ...
-
Co‐occurrence of 1,4‐dioxane with trichloroethylene in chlorinated solvent groundwater plumes at US Air Force installations: Fact or fiction
Increasing regulatory attention to 1,4‐dioxane has prompted the United States Air Force (USAF) to evaluate potential environmental liabilities, primarily associated with legacy contamination, at an enterprise scale. Although accurately quantifying environmental liability is operationally difficult given limited historic environmental monitoring data, 1,4‐dioxane is a known constituent (i.e., ...
-
A Pilot Scale EZVI and ZVI Treatment of Unsaturated and Saturated Soil for TCE Reduction
ABSTRACT: Enhanced biological reductive dechlorination, micro-scale zero valent iron (ZVI), and emulsified zero valent iron (EZVI) injections were implemented to treat chlorinated volatile organic compounds (CVOCs) at a former manufacturing facility in western South Carolina. These remedial approaches – until recently typically implemented as standalone technologies –were combined to ...
-
Concurrent bioremediation of perchlorate and 1,1,1-trichloroethane in an emulsified oil barrier
Abstract A detailed field pilot test was conducted to evaluate the use of edible oil emulsions for enhanced in situ biodegradation of perchlorate and chlorinated solvents in groundwater. Edible oil substrate (EOS®) was injected into a line of ten direct push injection wells over a 2-day period to form a 15-m-long biologically active permeable reactive barrier (bio-barrier). Field monitoring ...
By Redox Tech
-
Sustainable and Cost-Effective Destruction of Chlorinated Alkane-Alkene Contaminants via Biostimulation and Enhanced Reductive Dechlorination
Site Burlington Ontario, Canada. Past use environmental services; abutting property use automobile parts/service. Saturated subslab soils impacted with Chlorinated Volatile Organic Compounds (cVOC) 1,1,1-Trichloroethane (TCA); Dichloroethylene (DCE); Dichloroethane (DCA). Groundwater plume extends downgradient off-site; [cVOCs] exceed Ontario Ministry of Environment (MOE) Table 2 criteria. ...
-
Blacks dry cleaner Tetrachloroethene remediation project Case Study
Background PCE source area in soil and groundwater at an active dry cleaner. Performed demonstration of Bioavailability Enhancement Technology (B.E. T.rM patent pending). B.E. T. is a source area bioremediation technology that enhances the dissolution of the chlorinated solvent contaminant and provides an electron donor for anaerobic reductive dechlorination (ARD). WIL CLEAR Sodium Lactate ...
-
Dry Cleaning Site Remediation Miami, Florida - Case Study
Project Summary Dry cleaning solvents were found in the ground water at a shopping center at the former location of a dry cleaning facility at commercial shopping center. Most of the mass of ground water contamination was located under a bank built that was built over the former dry cleaners, which restricted access for remediation. BioLogix CL® bioremediation was implemented to reduce the ...
-
Fast analysis of AOX in waters by CIC
Measurement of AOCl, AOBr, AOI, and AOF according to DIN 38409-59 AOX (adsorbable organically bound halogens) is a complex parameter covering the sum of halogenated organic compounds adsorbable on activated carbon. Many of these organohalogens and their degradation products pose serious risks to human health and the environment [1–4]. Monitoring them is essential to ensure appropriate ...
By Metrohm AG
-
EOS Permeable reactive barriers successfully treat a large Trichloroethene plume - Case Study
Historical use of trichloroethene (TCE) and other chlorinated solvents at a former au-tomotive parts manufacturing plant in Indiana resulted in a large groundwater plume, stretching approximately 2 miles from the site. TetraTech GEO evaluated sev-eral remedial alternatives and selected enhanced in situ bioremediation to reduce contaminant concentrations and eliminate continued plume migration at ...
By Redox Tech
-
Case study - Rapid removal of chloroethenes at industrial sites
Description Air sparging with trenches had failed to remove groundwater and soil contamination at an industrial Superfund site in Piedmont soils in South Carolina. The major contaminants of concern were cis 1,2-dichloroethene (DCE) and trichloroethene (TCE) ranging from 0.5 to 2.0 mg/L. The treatment area was approximately 15,000 square feet. Ozone sparging was chosen as preferred ...
-
DOD evaluates bioaugmentation for remediating low-pH aquifers
The US Department of Defense (DOD) has completed pilot-scale work on the 'MAG-1' site at Fort Dix, NJ, to test suitability of anaerobic bioremediation for an aquifer with low pH. Project results will be used to design full-scale ground-water treatment at MAG-1. In addition, technical criteria gained from the demonstration will be integrated into DOD’s remediation strategy for its many facilities ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you