Method of purifying waste water biologically

Details Method of purifying waste water biologically Method of purifying waste water biologically

1994-07-01

1999-05-04

Wyse, Thomas G.

Liquid purification or separation

Processes

Treatment by living organism

210612, 210625, 210903, 210906, C02F 330

Patent

active

059001500

ABSTRACT:
A method of purifying waste water biologically, in which at least one biological reaction is performed in at least one biological reactor containing microorganisms in activated sludge, and the waste water is separated from the activated sludge in a clarification basin, with at least a fraction of the activated sludge from said biological reactor being recirculated, wherein, prior to admitting the waste water to be treated into said biological reactor, at least a fraction of the polluting particles in suspension therein are separated out therefrom, the separated polluting particles are sent to a sludge activation reactor that is separate and disposed in parallel, the separating polluting particles are used as the main substrate for the development of microorganisms in strict aerobiosis, and the superactivated sludge obtained in this way is injected into the biological reactor(s).

REFERENCES:
patent: 4009099 (1977-02-01), Jeris
patent: 4042494 (1977-08-01), Stoyer
patent: 4720344 (1988-01-01), Gonczarczyk et al.
patent: 5185080 (1993-02-01), Boyle
patent: 5540839 (1996-07-01), Pirt
patent: 5651891 (1997-07-01), Molof et al.

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