Sand filter media and an improved method of purifying water

Details Sand filter media and an improved method of purifying water Sand filter media and an improved method of purifying water

1987-08-14

1988-08-23

Cintins, Ivars

Liquid purification or separation

Particulate material type separator, e.g., ion exchange or...

With multi-layer beds

B01D 2316

Patent

active

047658924

ABSTRACT:
A slow sand filtering system is disclosed, in which an uncovered filter tank has therein a layer of sand, and an effective filter-enhancing amount of zeolite. The zeolite is topped by a growth of schmutzdecke, with the schmutzdecke comprising a layer of living organism selected from the group consisting of algae, plankton, diatoms, protozoa, rotifers and bacteria.

REFERENCES:
patent: 1745563 (1930-02-01), Turner
patent: 3723308 (1973-03-01), Breck
patent: 4237002 (1980-12-01), Strudgeon et al.

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