Waste water-treating method

Details Waste water-treating method Waste water-treating method

1977-09-08

1979-06-26

Hart, Charles N.

Liquid purification or separation

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

Responsive to fluid flow

210 40, C02B 114, C02C 502

Patent

active

041592441

ABSTRACT:
There is provided a waste water-treating method which comprises passing an aqueous liquid, in an upward direction and at a suitable flow velocity, through a bed consisting of activated carbon whose particle diameter ranges between 0.20 and 1.5 mm and whose width of particle size range (or substantial difference between the largest ones and the smallest ones) is chosen to be 0.30 mm or more, controlling the fluidized bed of the carbon to be expanded 1.2 to 3.0 times to form a particle size gradient of the activated carbon along the resultant fluidized bed.

REFERENCES:
patent: 3343680 (1967-09-01), Rice et al.
patent: 3436343 (1969-04-01), Smith
patent: 3658697 (1972-04-01), Huether
patent: 3775344 (1973-11-01), Amagi et al.
patent: 3855120 (1974-12-01), Garbo
patent: 4009098 (1977-02-01), Jeris
Weber et al., "Physicochemical Treatment of Wastewater," JWPCF, 1-1970, pp. 83-99.

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