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Aqueous wastes generated by reverse osmosis or the regeneration of demineralizer (ion exchange) columns that were used for recycling of wastewaters at facilities that maintain <br />zero discharge of wastewaters derived from the treatment of cyanide -containing aqueous waste may be treated by the following technologies: <br />Oxidation by addition of hypochlorite <br />Oxidation by addition of peroxide or ozone with or without ultraviolet light <br />Alkaline chlorination <br />Electrochemical oxidation <br />Ion exchange <br />Reverse osmosis <br />Rinseate from rinsing equipment used to transfer aqueous solutions containing cyanides such as containers, pumps, and hoses may be treated by the following technologies: <br />Oxidation by addition of hypochlorite <br />Oxidation by addition of peroxide or ozone with or without ultraviolet light <br />Alkaline chlorination <br />Electrochemical oxidation <br />Ion exchange <br />Reverse osmosis <br />17. Aqueous wastes generated by the following onsite recycling activities 1) Rinsing spent anode bags prior to onsite reuse; or 2) Rinsing empty containers prior to onsite reuse may be <br />treated by the following technologies: <br />Oxidation by addition of hypochlorite <br />Oxidation by addition of peroxide or ozone with or without ultraviolet light <br />Alkaline chlorination <br />Electrochemical oxidation <br />Ion exchange <br />Reverse osmosis <br />Aqueous wastes generated by onsite laboratories conducting analyses and testing may be treated by the following technologies: <br />Oxidation by addition of hypochlorite <br />Oxidation by addition of peroxide or ozone with of without ultraviolet light <br />Alkaline chlorination <br />Electrochemical oxidation <br />Ion exchange <br />Reverse osmosis <br />Process solutions containing cyanides with recoverable amounts of metal may be treated by the following technology: <br />Electrowinning to recover metals prior to further treatment, including destruction of incidental amounts of cyanide by electrochemical oxidation resulting from the <br />electrowinning process <br />Process solutions containing cyanides added slowly to a rinse tank at a level that never exceeds 5,000 milligrams per liter cyanide in the rinse tank may be treated by the following <br />technologies: <br />Oxidation by addition of hypochlorite <br />Oxidation by addition of peroxide or ozone with or without ultraviolet light <br />Alkaline chlorination <br />Electrochemical oxidation <br />Ion exchange <br />Reverse osmosis <br />Printed on 9/22/2020 2:53 PM <br />