Method for the biological purification of wastewater

Details Method for the biological purification of wastewater Method for the biological purification of wastewater

1992-03-13

1994-05-24

Cintins, Ivars

Liquid purification or separation

Processes

Treatment by living organism

210620, C02F 310

Patent

active

053146212

ABSTRACT:
The water to be treated is sent in a co-current with oxygenated gas into an upflow reactor with a fixed bed of particles, and the bacteria support medium used comprises particles with a bulk density of 35 to 65 kg/m.sup.3. The reactor or biological filter (or reactors or biological filters in series) comprises or comprise: a zone for the densification of sludges; at least one oxygenated gas injection device; a zone of filtering material, a retention ceiling and a washing water storage zone with removal of the treated effluent. Application to the treatment of wastewater and water to be made fit for drinking purposes.

REFERENCES:
patent: 4256573 (1981-03-01), Shimodaira et al.
patent: 4415454 (1983-11-01), Fuchs
patent: 4547286 (1985-10-01), Hsiung
patent: 4582609 (1986-04-01), Hunter, III et al.
patent: 4591437 (1986-05-01), Ernryd et al.
patent: 4756831 (1988-07-01), Menzel et al.
patent: 5147547 (1992-09-01), Savall et al.

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