Process for removal of mercury and mercury compounds from aqueou

Details Process for removal of mercury and mercury compounds from aqueou Process for removal of mercury and mercury compounds from aqueou

1979-04-30

1980-11-18

Wyse, Thomas G.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210719, C02F 170

Patent

active

042344220

ABSTRACT:
A process for the removal of mercury and mercury compounds from aqueous solutions and, in particular, industrial waste liquors, by reduction and filtration, wherein after reduction, the liquors are cleared by letting the mercury particles and dirt particles flow into a settling basin. Subsequently, the supernatant aqueous solution from the settling basin is subjected to filtration in a deep filter with a filtering agent having a grain size of 0.02 mm to 2 mm and preferably 0.04 mm to 0.6 mm, whereupon the mercury is returned by reverse rinsing into the settling basin from the filter and is separated in the settling basin.

REFERENCES:
patent: 3171800 (1965-03-01), Rice et al.
patent: 3630892 (1971-12-01), Hirs et al.
patent: 3680701 (1972-08-01), Holca
patent: 3736253 (1973-05-01), DeAngelis et al.
patent: 3764528 (1973-10-01), Cadmus
patent: 3929634 (1975-12-01), Schuller

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