| 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 in a reaction vessel to a level sufficient to precipitate solids including lead and zinc; b) communicating the underflow stream of the reactor vessel to a thickener to concentrate suspended solids in the underflo
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