Liquid purification or separation – Flow – fluid pressure or material level – responsive – Check valve
Patent
1977-03-02
1978-08-01
Spear, Jr., Frank A.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Check valve
210167, 210195R, 210196, 210257R, 210258, 210261, C02B 500, B08B 310, B60S 304
Patent
active
041041640
ABSTRACT:
A system for continuously treating waste water from laundries, car washers and like cleaning establishments to recover water soap, detergents, and other chemicals. The process of using the system is carried out by flowing the untreated water through sand chambers to remove heavy sediment, collecting the water from the sand chambers in a storage compartment, pumping the water through a centrifugal separator for removal of large particulate matter and then through a filter containing media for removal of flocculated soaps, detergents, waxes, and other particulate matter, thence into a filtered water storage compartment. The water is pumped from the filtered water storage compartment by a pressure pump. Part of the water containing unused soaps, detergents, conditioning agents, and other chemicals is returned from the filtered water storage compartment for reuse, the other part enters a filter containing absorptive media for removal of the remaining soaps, detergents, conditioning agents, organic compounds and other chemicals. The water is thence returned as pure rinse water to the cleaning establishment. Backwash water from the filters is returned through a separate bag filter recovering the water and leaving behind solids in the bag for removal and easy disposal.
REFERENCES:
patent: 2922173 (1960-01-01), Lind et al.
patent: 3253431 (1966-05-01), Minhinnett
patent: 3384239 (1968-05-01), Berardi
patent: 3502215 (1970-03-01), Cahan
patent: 3550778 (1970-12-01), Kesselman
patent: 3774625 (1973-11-01), Wiltrout
patent: 3850805 (1974-11-01), Armstrong
patent: 3923658 (1975-12-01), Lancaster
patent: 3931009 (1976-01-01), Davis
Spear, Jr. Frank A.
Spitzer Robert H.
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