Chemical Treatment of Metal Finishing Industrial Wastes and Wastewaters in the Presence of Chelating Substances

Award Information
Department of Defense
Air Force
Award Year:
Phase II
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Cache Environmental Laboratories, P.C.
1405 Mount Logan Drive, Logan, UT, 84321-
Hubzone Owned:
Minority Owned:
Woman Owned:
Principal Investigator:
Isabel Odongo
(435) 994-0905
Business Contact:
Mike McFarland
Technology Officer
(435) 994-0905
Research Institution:
ABSTRACT: With shrinking facility budgets and increasingly stringent environmental regulations, United States Department of Defense (DoD) weapon system maintenance facilities are faced with the difficult challenge of maintaining regulatory compliance with limited resources. Moreover, the growing diversity in DoD workloads as well as the increased use of low volatile organic compound industrial cleaners has increased the presence of chelating substances found in industrial wastes and wastewaters. During industrial wastewater treatment, these chelating substances form highly stable complexes with heavy metals thus inhibiting them from being effectively removed from solution. Recently, a new sulfur-based redox industrial wastewater treatment method has been developed that has the potential to consistently meet water quality compliance standards for regulated heavy metals in the presence of chelating substances. The new sulfur-based redox chemistry method utilizes a proprietary chemical mixture (Compliance MX), which is added to industrial wastewater under controlled pH and oxidation-reduction conditions. The chemical mixture, which is applied to negate the effects of chelation, results in the rapid destabilization of heavy metal ions leading to the subsequent formation of metal precipitates that are easily removed through sedimentation. BENEFIT: Beyond having the capability of treating electroplating and metal finishing wastewaters in the presence of chelating substances, the sulfur-based redox chemistry method provides a number of other potential benefits to both DoD weapon system maintenance facilities as well as private industry including; 1) elimination of the need to employ the acidic reduction process for hexavalent chromium removal, 2) elimination of the need for chlorine and/or other chemical oxidants for treating chelating substances, 3) significant improvements to the occupational health and safety environment for facility employees, 4) lower compliance and regulatory risks to the wastewater treatment facility, 5) significant financial savings with regard to reducing hazardous waste disposal costs and 6) elimination of capital improvement expenditures required to achieve industrial waste source segregation.

* information listed above is at the time of submission.

Agency Micro-sites

SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government