Apparatus and method for waste water treatment utilizing granula

Details Apparatus and method for waste water treatment utilizing granula Apparatus and method for waste water treatment utilizing granula

1996-08-08

1997-12-30

Upton, Christopher

Liquid purification or separation

Processes

Treatment by living organism

210605, 210615, 210616, 210623, 210151, 210188, 2101951, 2101952, 210903, 210602, 2101953, 210626, C02F 330

Patent

active

057026041

ABSTRACT:
A wastewater treating apparatus has first, second and third bioreactors. Each bioreactor has, in an upper position, a reaction/sprinkling portion for exhaust gas treatment. The first bioreactor has, in a lower position, a submerged portion including an aerobic upper portion and an anaerobic lower portion. The aerobic upper portion includes a membrane filter. A membrane concentrated liquid produced by the membrane filter is introduced into a mixing tank. A mixture of an alcohol, fine powdered material and membrane concentrated liquid from the mixing tank is introduced, together with a developer-containing wastewater, into the anaerobic lower portion, so that a granular sludge is formed therein. The granular sludge contains anaerobic microorganisms in a high concentration level and is therefore capable of treating the wastewater without necessity of wastewater dilution or use of chemicals.

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patent: 5254253 (1993-10-01), Pehmann
patent: 5342522 (1994-08-01), Marsman et al.
patent: 5432988 (1995-07-01), Yamasaki et al.
patent: 5462666 (1995-10-01), Kimmerl
patent: 5578214 (1996-11-01), Yamasaki et al.
"Application of Ultrafiltration to UASB Process" (Enviromental Microbioengineering Research Practice, 1993, published by Gihodo) pp. 193-196.

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