Filter cleaning method

Details Filter cleaning method Filter cleaning method

1974-02-15

1976-01-13

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

134 25R, 210 62, 210 63, 210 82, B01D 4102

Patent

active

039322785

ABSTRACT:
A method of cleaning sand or multi-media filters which comprises a process of backwashing the filter with water containing a high concentration of chlorine or ozone.

REFERENCES:
patent: 966177 (1910-08-01), Dopp
patent: 1197640 (1916-09-01), Kriegsheim
patent: 1634154 (1927-06-01), Lourens
patent: 1990214 (1935-02-01), Zapffe
patent: 2069621 (1937-02-01), Patrick
patent: 2144051 (1939-01-01), Frankforter
patent: 2443373 (1948-06-01), Borsoff
patent: 2648440 (1953-08-01), Mullins
patent: 2966431 (1960-12-01), Lorenz et al.
patent: 3078224 (1963-02-01), Schulze et al.

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