Biological filtration process

Details Biological filtration process Biological filtration process

1985-06-03

1987-06-30

Castel, Benoit

Liquid purification or separation

Processes

Treatment by living organism

210150, 2105021, 502413, 502437, C02F 304

Patent

active

046769072

ABSTRACT:
Biological stable articles are described which are especially useful as bed materials for treating waste water. Preferred articles are charred rice hulls which comprise silica and carbon.

REFERENCES:
patent: 1543763 (1925-06-01), Gambel
patent: 1556039 (1925-10-01), Shilstone
patent: 4076616 (1978-02-01), Verde
patent: 4179374 (1979-12-01), Savage et al.
patent: 4256573 (1981-03-01), Shimodaira et al.
patent: 4460292 (1984-07-01), Durham et al.

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