Method of controlling an anaerobic treatment process

Details Method of controlling an anaerobic treatment process Method of controlling an anaerobic treatment process

1984-08-06

1987-04-21

Castel, Benoit

Liquid purification or separation

Processes

Treatment by living organism

210605, 210606, 210614, 210928, 435167, C02F 328, C02F 1104, C12P 502

Patent

active

046594710

ABSTRACT:
The invention relates to a method of treating wastewater from the manufacture of peroxide bleached mechanical or chemi-mechanical pulp. The method comprises a hydrolysis step, a methane fermentation steps and an aerobic step. After the hydrolysis and methane fermentation steps, sludge is separated from the wastewater and partially recycled to the hydrolysis step. The redox potential of the outgoing water from the hydrolysis step is continuously measured and controlled to a value between -400 and -260 mV by regulating the amount of sludge recycled or by passing ingoing wastewater directly to the aerobic treating step.

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patent: 4510243 (1985-04-01), Haga et al.
NTIS PB80-124274; "Catalytic Decomposition of Hydrogen Peroxide by Manganese-Alumina"; National Science Foundation (Jan. 1974).

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