Method for removing substances from a solution

Details Method for removing substances from a solution Method for removing substances from a solution

1989-12-15

1991-01-29

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210669, 210694, 430399, B01D 1500, B01D 3703

Patent

active

049884484

ABSTRACT:
A filtering assembly is provided for removal of certain substances from a solution. More particularly, apparatus and a related method are provided for removal of hazardous or environmentally unacceptable chemicals from a waste solution before it is discharged. The device includes a cylindrical housing having a spaced apart inlet and outlet. Adjacent the inlet, a metal precipitate chamber is provided to collect precipitates which includes rolled fiberglass for capturing precipitates. A filter subassembly is provided on the downstream side of the inlet. The solution is then directed through an adsorption chamber containing activated carbon. In this chamber, certain chemicals are adsorbed onto the carbon. A further filtering device may be provided intermediate the adsorption chamber and the outlet to collect any remaining particles. The solution is then substantially free of undesired and potentially hazardous substances and may then be discharged into the environment. The device and related method has particular application to the disposal of spent photochemicals such as developer solutions.

REFERENCES:
patent: 3558482 (1971-01-01), De Young
patent: 3736253 (1973-05-01), De Angelis et al.
patent: 4325732 (1982-04-01), Woog
patent: 4608177 (1986-08-01), Woog
patent: 4662613 (1987-05-01), Woog

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