Wastewater treatment method

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow

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210DIG30, C02C 502

Patent

active

041705548

ABSTRACT:
A method of pollution abatement in the outflow of wastewater from a manufacturing plant or the like. A simultaneous precipitation of chromium and flouride contaminants is carried out with a subsequent removal of precipitates under conditions substantially reducing the volume of solids containing water to be handled.

REFERENCES:
patent: 2603597 (1952-07-01), Dailey
patent: 3284350 (1966-11-01), Williamson
patent: 3575853 (1971-04-01), Gaughan et al.
patent: 3716485 (1973-02-01), Robertson
patent: 3755156 (1973-08-01), Yakovlev et al.
patent: 3800024 (1974-03-01), Forsell et al.

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