The sedimented nickel is very pure and can be reused after acidification. The effluent from the reactor is led over a filter, and partially reused. Using the new technology results in a considerable reduction in both the amount of sludge produced from the DND device and the effluent produced. The new device will also be connected to four zing plating automations for zinc recovery. The amounts of sludge and effluent produced is less.
Savings result from reduced purchasing of metal salts.
Tijdschriift voor oppervlaktetechnieken en corrosiebestrijding. 33, No. 12, December, 1989.