Process for removal of mercury from waste water

Details Process for removal of mercury from waste water Process for removal of mercury from waste water

1984-04-04

1986-07-08

Wyse, Thomas

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210719, 210757, 210914, C02F 162

Patent

active

045991774

ABSTRACT:
A process for the removal and recovery of mercury and, if desired, other heavy metals from incinerator waste water produced by washing waste gases from incinerators, which comprises adding to the waste water a reducing agent or a combination of oxidizing and reducing agents, subjecting the thus added waste water to stripping treatment in the presence of ferrous ion to obtain a mercury vapor-containing gas and simultaneously form spinel type crystalline compounds and then cooling said gas to separate and recover the mercury. If desired, said spinel type crystalline compounds are also removed from the mercury-free waste water.

REFERENCES:
patent: 3764528 (1973-10-01), Cadmus
patent: 3847598 (1974-11-01), Coulter et al.
patent: 3857704 (1974-12-01), Coulter

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