Apparatus for treating industrial and domestic waste waters

Details Apparatus for treating industrial and domestic waste waters Apparatus for treating industrial and domestic waste waters

1975-03-12

1976-05-11

Hart, Charles N.

Liquid purification or separation

With gas-liquid surface contact means

210175, 210196, 210221P, 210274, 210290, C02C 104, B01D 2310

Patent

active

039561283

ABSTRACT:
A system for treating waste waters including a pair of concentric tanks forming a space therebetween which serves as an aeration chamber. Untreated but screened waste water is discharged into the (annular) space and withdrawn therefrom by a pump which passes the liquid through an oxygenating device which induces air into the liquid. The liquid is then circulated through long tubing wound around the outside peripheral surface of the tank to obtain intimate contact between the gas, liquid and solids therein and to convert dissolved material into insoluble material by a conventional biochemical process. The liquid thus processed in the tubing is introduced into the central or inner tank where the treated solids rise to the surface for recycling in the system while the liquid effluent is filtered and discharged to a river or stream.

REFERENCES:
patent: 2834466 (1958-05-01), Hament
patent: 3232589 (1966-02-01), Eckert
patent: 3477581 (1969-11-01), Stearns
patent: 3494463 (1970-02-01), Vermette
patent: 3544457 (1970-12-01), Tulley et al.
patent: 3616919 (1971-11-01), Feddern et al.
patent: 3622508 (1971-11-01), Komline
patent: 3642617 (1972-02-01), Brink et al.
patent: 3709364 (1973-01-01), Savage
patent: 3720319 (1973-03-01), White
patent: 3732160 (1973-05-01), Klock

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