Method for anaerobic wastewater treatment

Details Method for anaerobic wastewater treatment Method for anaerobic wastewater treatment

1984-08-06

1986-07-01

Castel, Benoit

Liquid purification or separation

Processes

Treatment by living organism

210603, 210615, 48197A, C02F 1104, C02F 328

Patent

active

045978727

ABSTRACT:
The invention relates to a method of treating wastewater from closed manufacture of mechanical or chemi-mechanical cellulose pulp, which treatment is carried out in a hydrolysis and acid fermentation step and a methane fermentation step with subsequent sludge separation and recycling of separated sludge.

REFERENCES:
patent: 4022665 (1977-05-01), Ghosh et al.
patent: 4067801 (1978-01-01), Ishida et al.
patent: 4213857 (1980-07-01), Ishida et al.
patent: 4461708 (1984-07-01), Hakulinen et al.
patent: 4491522 (1985-01-01), Ishida et al.
Pohland F. G. et al.; "An Application of Process Kinetics for Phase Separation of the Anaerobic Stabilization Process"; Progress in Water Technology, vol. 7, No. 1; pp. 173-189 (1975).
Klass D. L.; "Biomass as a Nonfossil Fuel Source", Am. Chemical Society Symposium Series 144 (1981).
Frostell B.; "Anaerobic-Aerobic Pilot Scale Treatment of a Sulphite Evaporator Condensate".

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