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Agency, U. S. E. P. (2006). Compost-free bioreactor treatment of acid rock drainage Leviathan Mine, California : innovative technology evaluation report, 2. Cincinnati, OH.: Research Laboratory, Office of Research and Development, United States Environmental Protection Agency.
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Dillard, G. (2000). A win-win way to clean up by changing ionic state, new process can precipitate heavy metals. Pay Dirt, 734, 10–11.
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Mosher, J. (1994). Heavy-metal sludges as smelter feedstock. Engineering and Mining Journal, 195(9), 25–30.
Abstract: Many industries produce a waste-water stream high in heavy metals. Disposal of sludge from these wastewater treatment plants has become increasingly difficult and expensive in the US due to passage of the Resource Conservation and Recovery Act's 'land disposal ban' for hazardous wastes. Innovative methods can be found for dealing with such wastes. For example, in performing a mandated clean-up under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), Asarco's California Gulch water-treatment plant in Colorado meets CERCLA clean-up goals while using a waste water treatment sludge as a smelter feedstock, recovering incidental saleable metals, and producing non-hazardous products. In this plant, Asarco treats acidic mine-drainage water having high metal concentrations and uses the waste sludge generated as a lime replacement in lead smelting operations. -Author
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Nordstrom, D. K. (2004). (P. Jarvis Adam, A. Dudgeon Bruce, & L. Younger Paul, Eds.). mine water 2004 – Proceedings International Mine Water Association Symposium. 1: University of Newcastle.
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