The waste water treatment equipment which assures two treatment waters, the R permeate water or the reuse of treatment pure water which generate with three systems which partition plating treatment in three systems, this are partitioned

摘要

Topic There was a method of thinking the waste water treatment equipment which assures the reuse of each treatment water which partitions plated treatment process in three systems, is partitioned. With these three systems, treatment of the treatment water being simple, in addition, you can list the fact that among other things desirable effect is produced in quality of plating treatment. But, it has become recent problem. On the galvanize, substituting in six value chrome mates, it reuses the treatment water, in the plated treatment process canning with the trivalent chrome mate, how there was no clear manner to in regard. Solutions This invention, intermediate treatment process (ro) of head-end process (i) of alkaline cleaning treatment A, and pickling degreasing treatment B, and electrolytic degreasing treatment C and galvanize treatment D or nitric acid active treatment E and, first - third trivalent chromate filming depends on the after-treatment process (ha) of F1 - F3, each plated treatment process is partitioned in three systems, this it is the waste water treatment equipment which assures the reuse of each treatment water which is partitioned, reuse of the treatment water and conservation of the clean water are assured. Choice figure Figure 11