Process for the elimination of heavy metals

Details Process for the elimination of heavy metals Process for the elimination of heavy metals

1995-02-16

1997-05-27

McCarthy, Neil

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210727, 210912, 210928, C02F 152, C02F 162

Patent

active

056329016

ABSTRACT:
The present invention relates to a process for the elimination of heavy metals from a closed white water system within the pulp and paper industry, wherein one adjusts the pH of the white water to between 5 and 11, and that one subsequently precipitates the resins present using a flocculation agent, whereby by a simultaneous elimination of the heavy metals is obtained.

REFERENCES:
patent: 3873418 (1975-03-01), Brax
patent: 4921613 (1990-05-01), Nordberg et al.
patent: 5368693 (1994-11-01), Vikio
patent: 5435921 (1995-07-01), Collins et al.

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