Liquid purification or separation – Recirculation
Patent
1993-03-11
1995-10-10
McCarthy, Neil
Liquid purification or separation
Recirculation
210206, 210208, 210219, 2102212, C02F 152, B01D 2101, B01D 2124
Patent
active
054568293
ABSTRACT:
An apparatus for recycling wastewater solutions includes a treatment tank and an air-operated pump and piping system for pumping wastewater contaminated with oil, heavy metals, and suspended solids from industrial equipment such as a jetwasher to the treatment tank, and for subsequently returning the purified water solution to the industrial equipment for reuse. A weir tube initially skims oil contaminants from the surface of wastewater in the treatment tank into a collection vessel. The recycling apparatus is powered solely by compressed air, which drives a rotary air motor powering mixing vanes in the treatment tank. Exhaust air from the mixing motor outlets into the treatment tank for the purpose of creating turbulence to enhance mixing. Air directed through an induction nozzle entrains flocculating polymer powder from a hopper in an air stream within a polymer supply hose exhausting into the treatment tank. After contaminant flocculation and settling, a decant outlet and a sludge outlet on the treatment tank decant purified water solution, and drain a contaminant sludge, respectively, into a strainer basket disposed at the top of a recovery barrel. Selective manipulation of fluid control valves allows pumping of the purified water solution from the recovery barrel back to the industrial equipment for reuse. The sludge byproduct collected and dried in the filter basket meets typical regulatory requirements for landfill disposal.
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american Colloid Company brochure 6 pgs.
AC-55 Small Batch Wastewater Treatment System-admitted prior art Jet Washing Better Engineering brochure-admitted prior art.
Fishman William
McCarthy Neil
Waldbaum Philip
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