Liquid purification or separation – With gas-liquid surface contact means
Patent
1977-01-10
1978-04-25
Hart, Charles N.
Liquid purification or separation
With gas-liquid surface contact means
210170, C02C 510
Patent
active
040861678
ABSTRACT:
A biofilter for treatment of waste waters and gases, comprising a bed of coniferous tree barking residue containing microorganisms and where the waste water to be treated can be uniformly conducted upon the barking residue bed and from below the barking residue bed oxygen containing gas can be blown against the waste water flow. The barking residue bed has been partly placed in a depression provided liquid and gas tightly in the ground, and that on the bottom of the depression there is a pipe system for draining the waste water that has traversed the barking residue bed and for conducting oxygen containing gas into said bed.
REFERENCES:
patent: 681884 (1901-09-01), Monjeau
patent: 807667 (1905-12-01), Dunbar
patent: 2301025 (1942-11-01), Friend et al.
patent: 2317782 (1943-04-01), Levine
patent: 3238124 (1966-03-01), Burton
patent: 3293174 (1966-12-01), Robjohns
patent: 3933628 (1976-01-01), Varani
patent: 4005010 (1977-01-01), Lunt
Koistinen Onni
Sten Matti
Tapola Esko
Castel Benoit
Enso-Gutzeit Osakeyhtio
Hart Charles N.
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