Method and system for regulating the addition of oxygenated gas

Details Method and system for regulating the addition of oxygenated gas Method and system for regulating the addition of oxygenated gas

1998-06-16

1999-12-28

Simmons, David A.

Liquid purification or separation

Processes

Treatment by living organism

210615, 210617, 210621, 210742, 210263, 210274, 210141, 210149, 36452806, 36452808, C02F 306, C02F 100

Patent

active

060077212

ABSTRACT:
The invention relates to a method for regulation of aeration in a biological filter of the type comprising conveyance means (3) bringing water to be filtered into the lower part of the filter, a filter bed (2) acting as a support to the biomass, means of distributing an oxygenated gas (5, 5a) in the filter bed (2), a layer of filtered water (7) above the said filter bed, a nozzle for (4) of discharging the filtered water in the upper part of the filter, characterized in that it consists of taking account of the efficiency Ct with which the biomass uses the distributed oxygen to regulate the said distributed oxygenated gas flow and/or its concentration in molecular oxygen, in order to optimize the quantity of molecular oxygen distributed by the said distribution means.

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patent: 5482630 (1996-01-01), Lee et al.
patent: 5591635 (1997-01-01), Young et al.
patent: 5702499 (1997-12-01), Timmenga

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