Combined filtration and fixation of heavy metals

Details Combined filtration and fixation of heavy metals Combined filtration and fixation of heavy metals

1991-12-11

1993-05-04

Silverman, Stanley S.

Liquid purification or separation

Filter

Material

210751, 106624, B01D 3906, B01D 3904

Patent

active

052079104

ABSTRACT:
The present invention describes a filter medium and a method of filtering metals from liquids, such as waste water, in which the metals are filtered from the liquids and are chemically fixed in the resulting filter cake in a nonhazardous and nontoxic form so that they may be disposed of in nonhazardous landfills. When all or a portion of the metals are dissolved, they are first precipitated and then filtered and chemically fixed.

REFERENCES:
patent: 356819 (1887-02-01), Bell
patent: 3841102 (1974-10-01), Conner et al.
patent: 4226630 (1980-10-01), Styron
patent: 4518507 (1985-05-01), Conner
patent: 4948516 (1990-08-01), Fisher et al.
patent: 5106510 (1992-04-01), Rieber

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