SIMPLE AND CONVENIENT METHOD FOR IMPROVING EFFICIENCY OF CLOSED NICKEL-ZINC ELECTROLYTIC-PLATING RINSE-WATER ONLINE RECYCLING MEMBRANE SYSTEM

摘要

Provided is a simple and convenient method for improving efficiency of closed nickel-zinc electrolytic-plating rinse-water online recycling membrane system; said method is: adding a phosphine sodium polycarboxylate and sodium polyepoxysuccinate binary compound reagent having a mass ratio of 1:10 to 10:1 to a closed nickel-zinc electrolytic-plating rinse-water online recycling membrane system, the added amount being an amount that causes the total concentration of the membrane-rich side in the system to 1.0 to 100 ppm.