Liquid purification or separation – Processes – Separating
Patent
1981-03-04
1982-07-06
Castel, Benoit
Liquid purification or separation
Processes
Separating
210797, 210275, 210293, B01D 2324
Patent
active
043382029
ABSTRACT:
A device for the distribution of water to be treated into and for the recovery of washing liquid from a water treatment filter apparatus of the type including a tank containing therein a filter material includes a channel coupled to and extending along the length of the tank, the channel receiving therein water to be treated. The channel has an opening into the interior of the tank at a level above the filter material. The opening is defined at the lower portion thereof by an overflow over which the water to be treated flows from the channel to the tank. The overflow includes a first inclined plane inclined downwardly and away from the channel in a direction toward the tank and a second inclined plane inclined downwardly and toward the channel from the first inclined plane. The inclined planes extend into the tank and form a deflector structure to prevent any filter material from passing through the opening during backwashing of the filter material.
REFERENCES:
patent: 2559784 (1951-07-01), Moore
patent: 3613888 (1971-10-01), Harris
patent: 4076625 (1978-02-01), Scholten et al.
patent: 4118322 (1978-10-01), San Roman
Castel Benoit
Degremont
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