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Meeting Stringent Metals Removal Requirements With Iron Adsorption/Coprecipitation
Author: Mark A. Manzione, Douglas T. Merrill, Mary E. McLearn, Winston Chow
Date: 5/989
Presented at the 44th Annual Purdue Industrial Waste Conference, West Lafayette, Indiana, May 1989

The Water Quality Act of 1987 set the stage for establishing a far more stringent set of metals-removal discharge requirements than industry and municipalities have previously faced. These requirements cover elements the USEPA designates as priority pollutants such as arsenic, antimony, selenium, beryllium, cadmium, chromium, copper, lead, nickel, silver, and zinc.a Some states also restrict discharge of other metals, such as molybdenum and vanadium. Many industrial and municipal facilities discharge wastewaters that contain these metals. The new metals limits are beginning to come into effect now, and managers of these facilities are seeking cost-effective ways to remove these metals. The iron adsorptions/coprecipitation process can help these managers meet the new metals limits by removing both dissolved and suspended forms of these metals simply and economically.