| http://www.w3.org/ns/prov#value | - A method for disposing of contaminants in a vacuum degasser water circuit, comprising the steps of:a) adjusting the pH of an underflow stream containing lead and zinc in the water circuit to a level sufficient to precipitate solids including lead and zinc; b) concentrating suspended solids in the underflow stream; c) communicating the concentrated solids of the underflow stream to a holding vessel
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