Navigating the Complexities of Chlorinated Solvent Remediation
Chlorinated solvents, such as trichloroethylene (TCE), perchloroethylene (PCE), and vinyl chloride (VC), are some of the most common and persistent groundwater and soil contaminants. These compounds, widely used in industrial processes and dry cleaning, pose several remediation challenges:
Toxicity and Health Risks:
Chlorinated solvents are known carcinogens and can adversely impact human health, even at low concentrations.
Migration and Plume Complexity:
Chlorinated solvents often migrate downward and laterally in groundwater, forming dense plumes that are difficult to predict and remediate effectively.
Environmental Persistence:
Under some site conditions, these chemicals resist natural degradation, allowing them to remain in the environment for decades.
Regulatory Pressure:
Stringent environmental regulations mandate comprehensive cleanup of sites impacted by chlorinated solvents, often within tight deadlines.
How Carus Can Help
Carus provides a range of innovative solutions tailored to the remediation of chlorinated solvents in soil and groundwater:
In Situ Chemical Oxidation:
RemOx® S and RemOx® L ISCO Reagents: Permanganate provides effective source area treatment while offering flexibility for targeted injection and rapid oxidation of chlorinated compounds. Oxygen BioChem (OBC™) is an excellent choice that combines sodium persulfate and calcium peroxide.
Treatment Train Approaches:
Carus’ ISCO products can be used alongside bioremediation amendments to accelerate source treatment and manage residual plumes, providing a comprehensive solution for site closure.
Bioremediation Products:
- CAP 18® bioremediation product: A slow-release electron donor designed for anaerobic degradation of residual chlorinated solvents in groundwater.
- CAP 18 ME® bioremediation product: An enhanced version of CAP 18, combining long-term carbon release with faster initial degradation to address dissolved-phase contaminants.
- ABC-Ole´ is formulated on a site by site basis to provide optimal biodegradation. Similar to CAP 18 ME, ABC- Ole´ offers a short-term component from lactate and/or alcohol and offers a longer term component with vegetable oil. ABC-Ole´ also contains phosphate buffer to control pH and provide nutrients to the microbes.
Site-Specific Design:
Our expert remediation team offers detailed design consultations to optimize delivery methods, injection plans, and product selection for each unique site.
Solutions in Action
- Source Treatment: Permanganates effectively oxidize dense non-aqueous phase liquids (DNAPLs) and other concentrated sources of chlorinated solvents.
- Plume Management: A combination of ISCO and bioremediation ensures comprehensive treatment of dissolved contaminants.
- Regulatory Compliance: Carus’ solutions are designed to meet stringent environmental standards, helping sites achieve closure efficiently.
Resources
Take Control of Chlorinated Solvent Contamination
Carus offers proven technologies and expert support for addressing chlorinated solvent contamination. Contact our team today to discuss a tailored solution for your site’s needs.