Biological method of treating wastewater in batch with porous bi

Details Biological method of treating wastewater in batch with porous bi Biological method of treating wastewater in batch with porous bi

1991-11-12

1993-10-19

Wyse, Thomas

Liquid purification or separation

Processes

Treatment by living organism

210618, 210630, C02F 310, C02F 330

Patent

active

052542548

ABSTRACT:
An improvement in the biological method for treating wastewater is provided. The method is featured by adding to the reactor an amount of floating porous biomass carrier which can be mixed thoroughly with the wastewater to be treated. By the utilization of the carrier, the microorganisms can be retained in the reactor in a high concentration and the mass transfer can be adjusted so that various phases of microorganisms are provided within the reactor. The method is also characterized in that the reactor is operated under aerobic, anoxic and/or anaerobic conditions which are sequentially provided in an appropriate order depending on the type of pollutant to be treated. The method can remove organic substances, and nitrous and phosphorus materials effectively in a single reactor, and reduce the volume of the resultant sludge and the capital investment greatly as compared with the prior art methods.

REFERENCES:
patent: 4160724 (1979-07-01), Laughton
patent: 4162153 (1979-06-01), Spector
patent: 4479876 (1984-10-01), Fuchs
patent: 4500429 (1985-02-01), Reimann et al.
patent: 4512311 (1985-06-01), Fuchs et al.
patent: 4566971 (1986-01-01), Reimann et al.
patent: 4655925 (1987-04-01), Tabata et al.
patent: 4705634 (1987-11-01), Reimann et al.
patent: 5126042 (1992-06-01), Malone

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