Metals and Metal Finishing - Case Studies

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Hexavalent Chrome Contamination in Texas Groundwater Treated by Wastewater Ion Exchange Service

Siemens Water Technologies was awarded a contract to provide design, installation and off-site recovery for a chromate contaminated groundwater supply in Odessa, Texas. The site was the previously home to a number of chrome plating shops that had since gone out of business.

Hexavalent Chrome Treatment for Rinsewater Recycling Reduces Feedwater Demand and Wastewater Discharge

In 2006, Siemens Water Technologies was contacted by a hexavalent chrome plating customer for assistance in reducing water demand at the facility. The customer manufactures chrome plated parts and was seeking a solution that would allow an increase in production without the need to expand existing pretreatment equipment used to condition city water and also avoid additional investment in the existing precipitation system.

Ion Exchange Treatment of Regulated Metals in Coal Ash Found to be Efficient in Power Industry

Coal ash is a waste product of coal combustion used for electrical power generation. Fly ash (from smoke stacks) and bottom ash (from boilers and combustion chambers) may contain trace metals including Aluminum, Arsenic, Cadmium, Chrome, Copper, Mercury, Nickel, Lead, Selenium, Vanadium and Zinc. This ash is removed from the boiler using a water slurry and stored in holding basins or ash piles within the power generation facility.

New Media Removes Trivalent Chromium From Electropolishing Rinsewater

Parker Hannifin, Formerly Aeroquip, Complies With Local Pretreatment Regulations Using Microfiltration, Dewatering, and Drying Equipment

Microfiltration is used to treat wastewater for heavy metals removal via hexavalent chromium reduction and metal hydroxide precipitation for discharge to the POTW and ion exchange is used for water recycling within the plant.

Rinse Water Recovery System Saves Elexsys International Over One Million Gallons of Water Per Month

Emerging from economic and industry downturns, Elexsys faced increased demands coupled with cost management in a highly competitive printed circuit marketplace. Elexsys, of Nashua, New Hampshire, needed a cost-effective solution that would reduce the hydraulic loading on their existing conventional wastewater system and allow easy expansion without sacrificing environmental integrity.

Silverback® Reclaims Spent Alkaline Cleaner at Gates Rubber

The United States Environmental Protection Agency (EPA) has created the Environmental Technology Verification Program (ETV) to facilitate the deployment of innovative and improved environmental technologies through performance verification and dissemination of information.

Specialty Media Reduces Cadmium from Electroplating Wastewater Discharge

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