| 摘要 |
<p>Disclosed is a method of treating photographic process waste liquor through concentration by evaporation, comprising heating photographic process waste liquor to allow at least part thereof to evaporate, and concentrating remaining liquid for its collection, wherein the photographic process waste liquor is treated by evaporation at a temperature lower than the boiling point thereof in at least one part of the processing course, and condensing vapor thereby produced. Also disclosed is an apparatus for treating photographic process waste liquor through concentration by evaporation, comprising a method for heating photographic process waste liquor to allow at least part thereof to evaporate, and concentrating remaining liquid for its collection, wherein the apparatus comprises a method for effecting the concentration by evaporation by controlling the photographic process waste liquor to a temperature lower than the boiling point thereof in at least one part of the processing course, and a method for condensing vapor thereby produced.</p> |
