Liquid purification or separation – Processes – Treatment by living organism
Patent
1979-05-30
1981-03-10
Castel, Benoit
Liquid purification or separation
Processes
Treatment by living organism
210617, 210760, C02F 304
Patent
active
042552664
ABSTRACT:
In a biological water purification process polluted water, including surface water to be made potable, sewage water or industrial water, is percolated through a submerged fixed bed of granular material such as activated carbon, chamottes, raw clays, etc., with an oxygenated gas being upwardly injected at an intermediate level of the bed. The water and gas delivery rates are controlled to satisfy the following relations: ##EQU1## wherein Q.sub.1 is the delivery of oxygenated gas in m.sup.3 /hr,
REFERENCES:
patent: 3563888 (1971-02-01), Klock
patent: 3803029 (1974-04-01), Blecharczyk
patent: 3928190 (1975-12-01), Bebin
patent: 3933629 (1976-01-01), Smith
patent: 4076616 (1978-02-01), Verde
patent: 4141824 (1979-02-01), Smith
Gilles Pierre
Leglise Jean-Paul
Moreaud Henri
Castel Benoit
O T V (Omnium de Traitements et de Valorisation
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