Assembly for removing water for washing filters

Details Assembly for removing water for washing filters Assembly for removing water for washing filters

1991-06-17

1993-03-30

Dawson, Robert A.

Liquid purification or separation

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

With gravitational separator

210274, 210279, 210288, 210521, B01D 2446

Patent

active

051981084

ABSTRACT:
An assembly for removing wash water for washing filters containing granular filter material, which are washed simultaneously with water and air, such as those employed especially in water treatment, and recovering the particles of granular filter material entrained by the water during the washing which includes a collecting member having calibrated holes for collecting and removing dirty water, internal and external partitions placed on each side of the collecting member, defining a water recovering zone inside the internal partitions and between the internal and external partitions, tranquil flow zones promoting the separation, by downward concurrent settling of the particles of granular material and of the dirty water to be removed, and a baffle intended to avoid disturbing the preceding zones by the water/air/granular material three-phase mixture formed during the washing, placed under said zones and directing the three phase mixture towards an external degassing zone where the air is removed before the resulting two-phase mixture enters the tranquil settling zones.

REFERENCES:
patent: 2453345 (1948-11-01), Row
patent: 3433359 (1969-03-01), Lundin et al.
patent: 3459302 (1969-08-01), Ross
patent: 4076625 (1978-02-01), Scholten et al.
patent: 4202774 (1980-05-01), Kos
patent: 5013435 (1991-05-01), Rider et al.

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