REMOVING HEAVY METALS IN A BALLASTED PROCESS

REMOVING HEAVY METALS IN A BALLASTED PROCESS

A system for treating metal-contaminated wastewater includes a primary treatment sub-system, a secondary treatment sub-system, and a tertiary treatment sub-system. The tertiary treatment sub-system includes a reactor tank, a source of ballast material, a source of coagulant, a solids-liquid separato...

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Hauptverfasser: THOMAS MILES, ROHAN WIKRAMANAYAKE, RAYMOND G PEPIN
Format: Patent
Sprache:eng
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Zusammenfassung:A system for treating metal-contaminated wastewater includes a primary treatment sub-system, a secondary treatment sub-system, and a tertiary treatment sub-system. The tertiary treatment sub-system includes a reactor tank, a source of ballast material, a source of coagulant, a solids-liquid separator, and a controller configured to recycle ballasted solids from the solids-liquid separator to the reactor tank an amount sufficient to generate metal hydroxide floe in the reactor tank to reduce a concentration of dissolved metal in the reactor tank.