Anaerobic treatment

Details Anaerobic treatment Anaerobic treatment

1980-10-21

1982-12-28

Hruskoci, Peter A.

Liquid purification or separation

Processes

Treatment by living organism

48197A, 210631, C02F 328, C02F 330

Patent

active

043660592

ABSTRACT:
Treatment of waste streams, particularly acidic petrochemical wastes, in anaerobic filter at high loadings with high rates of recycle. The effluent from the top of the filter is passed into a gas-disengaging-solids-settling zone containing a quiescent body of the liquid of said effluent. Particles of solid biomass settle in that liquid body and are withdrawn, with the liquid, and recycled to the base of said filter together with fresh acidic waste and added inorganic alkaline material. The outfall from the filter is fed to an aerobic digester and the resulting activated sludge is recycled to the filter. The alkaline material is preferably magnesium oxide or carbonate. Sodium formate may also be used as the alkaline material.

REFERENCES:
patent: 1194933 (1916-08-01), Barber
patent: 3575853 (1971-04-01), Gaughan et al.
patent: 3846289 (1974-11-01), Jeris et al.
patent: 4134830 (1979-01-01), Skogman et al.
patent: 4182675 (1980-01-01), Jeris
patent: 4315823 (1981-12-01), Witt et al.
Merck Index, 6th Edition, p. 879, 1952.
Young et al., "The Anaerobic Filter for Waste Treatment", WPCFJ, p. R 160-173, May 1969.
Climenhage, "Biological Denitrification of Nylon Intermediates Waste Water", 22nd Canadian Conf., Sep. 1972.

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