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Neutralization of Wastes
National Summary
Liquid solutions that exhibit the hazardous characteristic of corrosivity are a common type of hazardous waste that many industries generate. These corrosive wastes could be many things, including industrial cleansers, the by-products of chemical reactions, spent catalysts, or sludges from wastewater treatment systems. Neutralization is a chemical process used on corrosive hazardous waste to reduce the level of a waste's corrosivity. The neutralization procedure involves adjusting the pH level of the corrosive waste (with no other hazardous characteristics) to a pH between 5.5 and 9.5. The purpose is to alter the corrosive characteristic of the waste so that it no longer is hazardous and can be disposed of or treated as nonhazardous.
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