Treatment of wastewater

Details Treatment of wastewater Treatment of wastewater

1977-03-01

1979-04-17

Wyse, Thomas G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

C02C 104

Patent

active

RE0299693

ABSTRACT:
Process and apparatus for the oxidation of carbonaceous and nitrogeneous matter in wastewater by use of a mixture of biologically active slimes attached to partially submerged rotating contactors. The biological contactors are mounted in a single-stage treatment unit and are supplied with wastewater at a controlled rate relative to the surface of the contactors and distributed substantially evenly over the contactor surface. A denitrifying unit, located upstream from the single-stage treatment unit is supplied with wastewater and recirculated effluent from the single-stage treatment unit. The denitrifying unit utilizes biologically active slimes attached to rotating biological contactors for the removal of carbonaceous matter from the wastewater supported by nitrate oxygen from the recirculated effluent.

REFERENCES:
patent: 3266786 (1966-08-01), Grimes et al.
patent: 3335081 (1967-08-01), El-Naggar
patent: 3547815 (1970-12-01), McWhirter
patent: 3557954 (1971-01-01), Welch
patent: 3596767 (1971-08-01), Antonie
patent: 3654147 (1972-04-01), Levin et al.
patent: 3704783 (1972-12-01), Antonie
Antonie, "Three-Step Biological Treatment with the Bio-Disc Process", presented at the New York Water Pollution Control Association meeting, Montauk, N.Y., Jun. 12-15, 1972.

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