Treatment of suspended solids--and adsorbable contaminant--conta

Details Treatment of suspended solids--and adsorbable contaminant--conta Treatment of suspended solids--and adsorbable contaminant--conta

1980-02-06

1982-05-04

Cintins, Ivars C.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210670, 210777, 210796, 210807, B01D 3702

Patent

active

043281052

ABSTRACT:
A process for removal of suspended solids and adsorbable contaminants from an influent liquid containing same. A filter bed of porous polyurethane particles is provided, and a particulate adsorbent selective for the adsorbable contaminants is placed into the pores of the polyurethane particles. The suspended solids--and adsorbable contaminants--containing influent liquid is passed through the filter bed for deposition of the suspended solids on the polyurethane particles and adsorption of the adsorbable contaminants by the particulate adsorbent to yield a solids--and adsorbable contaminants--depleted liquid effluent, which is discharged from the filter bed. The influent liquid is passed through the filter bed until the filter bed is at least partially loaded with deposited solids and adsorbed contaminants, whereupon same are removed from the filter bed polyurethane particles to regenerate same, prior to repetition of the cycle. The specific improvement of the invention relates to methods for placing the particulate adsorbent into the pores of the polyurethane particles.

REFERENCES:
patent: 3252899 (1966-05-01), Rice et al.
patent: 3327859 (1967-06-01), Pall
patent: 3420709 (1969-01-01), Barrett et al.
patent: 3436343 (1969-04-01), Smith
patent: 3698554 (1972-10-01), Mail
patent: 4061807 (1977-12-01), Shaler et al.
patent: 4137162 (1979-01-01), Mohri et al.
patent: 4162216 (1979-07-01), Nyer
Lee, D. W. et al., "Selective Separation of Nickel II by Dimethylglyoxime-Treated Polyurethane Foam", Analytical Chemistry, vol. 48, No. 14, Dec. 1976, pp. 2214-2218.

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