Rinsing water following a electrolyte nickel plating, (Watts electrolyte)

nickel sulphate, nickel chloride, boric acid, polishing agent, surface active agent

In surface treatment the rinsing water quality following nickel plating is of especially great importance for further process steps, such as, for example, the final chroming. There must be a low conductivity to be able to ensure a clean surface of the work piece. Continual processing of the rinsing water through the VACUDEST® process makes rinsing water of the desired high quality available. With the processing of rinsing water, the nickel electrolyte type is significant, if it must be selected dependent on the required chloride-containing special material for the evaporating unit. A processing of the electrolyte itself is not economically sensible because of the high salt-concentration. Likewise, rinsing water from a chemical nickel plating is not suitable for this type of processing because of their contents.

Practical experience with vacuum distillation in continuous operation shows that a 100 % recycling and circulation process of the rinsing waters leads to optimal cleaning results. The concentrate from the VACUDEST® can have a sale realisation due to its high metal salt content. With VACUDEST®, the reduction in fresh water costs simultaneously reduces the processing costs of rinsing water to great degree.