Micro-effluent process for rinsing water in industrial processing

Abstract

This invention relates to a micro-effluent process for rinsing water and equipment for the same in industrial processing, especially in electroplating processing. The process of the present invention is characterized in that periodically tank-turning over, that is, at definite time intervals, the rinsing solution is transferred from the first rinse tank to a high level storage tank or to a working-tank (plating-tank), from the second rinse tank to the first rinse tank, and so on and so forth, at last from the last rinse tank to its preceding tank, and the empty last rinse tank is filled up by clean water with a flow rate of less than 400 l/h, or filled up with clean water periodically at a definite time interval same as that for tank-turning over. According to the present invention, the rinsing water overflowed from the last rinse tank can be discharged directly, the cleaning quality of work-pieces accords with requirement, the recovery of the plating solution is maximized, and the water consumption is greatly reduced. This invention is also applied widely in other rinsing processes, such as in printing-dyeing industry and butcher business and so on.

Dependencies are inferred from the claim text.