Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1998-09-11
2000-12-12
Simmons, David A.
Liquid purification or separation
Processes
Ion exchange or selective sorption
210683, 210723, 210726, 210266, 210269, C02F 142
Patent
active
061593761
ABSTRACT:
A method and apparatus for the treatment of wastewater effluent from a laundromat combines multiple filtering, particularly including, bag filters, to remove particulates including fine particulates followed by treatment in a weak base anion exchange resin bed to remove MBAS. The weak base resin was found to remove MBAS and organics such as LAS which were highly de-adsorbed in the efficient regeneration of the resin. The weak base anion exchange resin is preferably macroporous in the sulfate form. The invention contemplates multiple bag filters of different degrees of coarseness.
REFERENCES:
patent: 4145281 (1979-03-01), Weishaar et al.
patent: 4182676 (1980-01-01), Casolo
Hoey Betsey Morrison
I.P. Licensing, Inc.
Simmons David A.
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