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EnviroBlend - Heavy Metals Waste Treatment
EnviroBlend is a specialized solution designed for the treatment of contaminated soil, groundwater, heavy metal-bearing process waste, and acid gas emissions. Leveraging its own raw materials mine and manufacturing facilities, EnviroBlend ensures tight control over product quality and efficacy. The company offers innovative, waste-specific chemistries developed in a cutting-edge laboratory. These customized treatments aim at optimizing the stabilization and remediation processes for various industrial applications, including former industrial operation sites and foundries. EnviroBlend offers services from initial consultation to full project implementation, emphasizing cost-efficiency and effective heavy-metal waste management. The company also provides complimentary treatability studies to demonstrate the effectiveness of its solutions.EnviroBlend treatments are right for you if you are dealing with the following:
Treatment of contaminated soil and/or groundwater
- Are you responsible for treatment of heavy metal contaminated soil or groundwater that is leaching above the regulatory standards (TCLP, SPLP, MEP)?
- Are you looking to eliminate expensive hazardous waste disposal costs?
- Are you looking to reduce your cost per treated ton?
- Would you save significant money by eliminating transportation costs by leaving treated product in place?
Treatment of heavy metal-bearing process waste and/or acid gas emissions
- Are your current waste streams being analyzed for potential hazardous contaminants or conditions (i.e. leaching of metals, pH, etc.)?
- Is your project/facility located in an environmentally sensitive or public area?
- Is your emission particulate (wet scrubber sludge or baghouse dust) considered hazardous for heavy metals?
- Is your facility under particular scrutiny by your state for being a Large Quantity Generator of hazardous waste?
EnviroBlend has the unique advantage of having its own raw materials mine and manufacturing facilities to help us control the quality and effectiveness of our products.
We have a highly technical advisory team and a state-of-the-art lab which enables us to develop innovative and waste-specific chemistries for maximum treatment and lower cost.
You can depend on our client-based service and support, starting with your initial contact with EnviroBlend, and lasting throughout the duration of your project or usage.
EnviroBlend® is a family of treatment chemicals, custom-blended to render metal-bearing wastes non-hazardous.
It was originally developed in the 1980s for foundry clients; It offered a new and more permanent alternative to lime-based treatment.
EnviroBlend technology does not conceal metal contamination via encapsulation or solidification; rather, it works to stabilize metals of concern by regulating pH and forming insoluble compounds that will not leach into the environment. For acid gases, it helps to neutralize emissions to acceptable regulated levels. Each EnviroBlend chemistry is designed specifically for each individual application, so the composition of blends can vary.
EnviroBlend works by regulating pH for long-term results.
In addition to forming insoluble compounds, EnviroBlend regulates the pH of the environment, a key factor in controlling leachability over time.
- Lead, for example, leaches on a bell curve, at both high and low pHs.
- To minimize leaching, the treatment additive should not drive up the pH too quickly or too high.
- EnviroBlend uses products that will never bring the pH to a dangerous level.
- We are able to increase treatment efficiency by controlling pH as needed.
EnviroBlend manages your heavy metal waste.
EnviroBlend’s technology results in stable compounds that reduce metal leaching in all reasonable disposal settings, alleviating your liability exposure and providing significant cost savings. We have continued to expand our line of treatment capabilities to include:
- Lead
- Cadmium
- Arsenic
- Hexavalent Chromium
- Selenium
- Antimony
- Zinc
- Nickel
- Copper
- Industrial gas emissions
- Odor control
- Wastes contaminated with multiple metals
Whether associated with conventional soil and groundwater remediation, industrial process waste stream treatment, or lead paint abatement, EnviroBlend provides a cost-effective, flexible, and stable approach to managing your heavy metal waste.
Portland Cement and CKD are examples of lime-based treatment technologies that can occasionally pass an initial Toxicity Characteristic Leaching Procedure (TCLP) test. However, actual long-term treatment is at risk.
Once the treated waste is exposed to the environment, a highly alkaline product such as Portland Cement will continue to drive up the pH, often too quickly and irregularly. Because many metals will leach at low and high pHs (on a bell curve), a sudden increase in pH can cause metals to leach over time. Therefore, pH maintenance is imperative to long-term stability.
Portland Cement can have higher dosage and leaching rates.
The use of lime-based technologies can fall significantly short compared with the EnviroBlend chemistry when it comes to dosage rates. Click here for data on the effectiveness of the EnviroBlend chemistry resulting in the very low leaching in both the TCLP (acid) and Synthetic Precipitation Leaching Procedure (SPLP) or “acid rain” tests. Both the lime and Portland Cement treatments are able to sometimes meet the TCLP test at high dosages but they actually increase the amount of lead leaching in the SPLP test.
The key to understanding the Toxicity Characteristic Leaching Procedure (TCLP) is being aware of which leaching solution is being used.
Although most people only look at the final results of the TCLP (EPA SW846 Method 1311), there are several important things to know about the actual test procedure.
- There is a preliminary evaluation in the TCLP that is used to establish the initial pH of the waste, which determines whether to continue with Solution 1 (a dilute acid with a pH of 4.93) or a Solution 2 (a strong acid with a pH of 2.88).
- If the initial pH of the waste is less than 5, then Solution 1 is used.
- If the pH of the waste is above 5 at the end of the pre-test, then Solution 2 is used. Since it is a stronger acid, higher concentrations of metals will leach out using Solution 2.
Occasionally, EnviroBlend® clients notice inconsistent TCLP results and contact an EnviroBlend representative. After looking into it further, the laboratory typically finds that they were not consistently utilizing the correct TCLP preliminary procedure. This, of course, can lead to disposing of non-hazardous waste as hazardous or hazardous waste as non-hazardous. Both situations are risky and expensive.
It is important to make sure laboratories are running the pre-test for each sample.
To learn more about this topic contact:
- EnviroBlend at 800-227-4287 or
- Visit the U.S. Environmental Protection Agency website to read the full SW-846 Test Method 1311: Toxicity Characteristic Leaching Procedure