System for handling exhausted vermiculite cation exchange materi

Details System for handling exhausted vermiculite cation exchange materi System for handling exhausted vermiculite cation exchange materi

1981-04-06

1983-06-07

Cintins, Ivars C.

Liquid purification or separation

Constituent mixture variation responsive

210189, 210279, B01J 4900

Patent

active

043870210

ABSTRACT:
A system for handling exhausted vermiculite cation exchange particles after they have been used for the removal of heavy metal ions from waste effluents. The exhausted particles are stabilized and removed from the ion exchange column. Stabilization may be by acid solution recirculation through the column prior to particle removal. This is accomplished by preferably using a portable stabilization unit. The stabilized particles are removed from the column by a flushing, backwashing arrangement. After drying, the particles, which are non-hazardous, may be used in a land fill or they may be expanded to produce a lightweight aggregate, insulation, or agricultural material.

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