Process for removing waste water from hardening and...

Details Process for removing waste water from hardening and... Process for removing waste water from hardening and...

B - Operations, Transporting

01

D

161/31

B01D 1/00 (2006.01) B01J 10/00 (2006.01) C02F 1/04 (2006.01) C21D 1/46 (2006.01)

Patent

CA 1076019

ABSTRACT OF THE DISCLOSURE The present invention provides in a process for removing waste water obtained from salt baths used in hardening shops and galvanizing shops by evaporating the deleterious-matter containing substances and completely detoxicating the evaporation concentrates, the improvement in which the concentration of the waste water is first reduced to a salt content of 300 to 500 g per litre and that this concentrated solution is then fed into a liquid salt bath.

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