Sequencing batch liquid treatment

Details Sequencing batch liquid treatment Sequencing batch liquid treatment

1992-04-20

1994-10-11

McCarthy, Neil

Liquid purification or separation

With heater or heat exchanger

Vapor or gas removal

210188, 210194, 210205, 210206, 210218, 2102212, 210208, B01D 5302

Patent

active

053544587

ABSTRACT:
A sequencing batch apparatus being manually or automatically operated for treating a contaminated water is described. The present invention specifically relates to the apparatus comprising an inlet pipe, a batch reactor, a chemical feeder means, at least one mixing means, a coarse bubble distribution means, a fine bubble distribution means, a liquid discharge means, and sludge discharge means for required liquid treatment, and further alternatively comprising a gas moving means, a gas pipe, a flow meter, an enclosure and a gas purification means for air emission control upon demand. The present invention further relates to an apparatus system comprising means for recovering precious metal, controlling optimum pH in an acid range, reducing hexavalent chromium to trivalent chromium, controlling optimum pH in a base range, oxidizing cyanide, destroying phosphite, separating flocs, exchanging metals, adsorbing contaminants, neutralizing an effluent, and controlling gas emission. The treated effluent can be safely discharged into a receiving water. The waste sludges, ashes and spent adsorbents containing metals, PCB, and other toxic organics are safely disposed of by cementation or solidification.

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