Concentrating evaporators – Processes – Involving waste liquid
Patent
1987-08-20
1988-08-30
Lacey, David L.
Concentrating evaporators
Processes
Involving waste liquid
159 3, 159 161, 159 481, 159901, 203 39, 203 49, 203 90, 202201, 202236, 261108, 261118, 210805, 210197, 354297, 55 53, B01D 116, B01D 1900
Patent
active
047674989
ABSTRACT:
Photographic waste solution is treated by a method which comprises contacting the waste solution with air, in an especially designed treatment vessel, at a solution temperature of from about 120.degree. F. to about 140.degree. F. The air thus becomes supersaturated with the liquid in the waste, and the waste solution is thus concentrated to form a waste slurry which is transferred out into a waste storage vessel. The supersaturated air which is virtually free from waste is discharged to the atmosphere. The method is carried out in an especially constructed apparatus comprising a uniquely designed treatment vessel.
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Lacey David L.
Manoharan V.
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