Method and apparatus for removing heavy metals from waste water

Details Method and apparatus for removing heavy metals from waste water Method and apparatus for removing heavy metals from waste water

1976-03-08

1979-08-28

Castel, Benoit

Liquid purification or separation

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

Responsive to fluid flow

210 38B, 210 54R, B01D 1506

Patent

active

041660323

ABSTRACT:
Heavy metals in a waste water stream are contacted with fibrous cellulose xanthate (e.g., sodium based) and removed from the stream by chemisorption. After separation from the waste water stream, the heavy metals are stripped from the chemisorbed cellulose xanthate and recovered. The stripped cellulose is then converted to regenerated cellulose xanthate which is employed for further treatment of waste water. In a preferred technique, the cellulose xanthate is formed into a porous fibrous bed through which the waste water stream is continuously passed.

REFERENCES:
patent: 3892688 (1975-07-01), Motani et al.
patent: 3947354 (1976-03-01), Swanson et al.
Wing, R. E.; "Heavy Metal Removal from Wastewater with Starch Xanthate"; Proceed. 29th Ind. Waste Conf., Purdue University (May 1974); pp. 348-356.

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