System for handling exhausted vermiculite cation exchange materials
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United States of America Patent
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-
Jun 7, 1983
Grant Date -
N/A
app pub date -
Apr 6, 1981
filing date -
Apr 6, 1981
priority date (Note) -
Expired
status (Latency Note)
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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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