Zero discharge of electroplating wastewater What are the principles and characteristics of
Operating principle of electroplating wastewater zero discharge system:
The zero discharge system of electroplating wastewater mainly uses membrane separation technology. Because the membrane separation technology has the advantages of low energy consumption, no phase change, no pollution, and high separation efficiency and concentration times, suitable membrane separation is selected to concentrate the rinse water of electroplating solution, and the concentration times can reach 100 times (in volume). The concentrated solution after membrane separation returns to the electrolytic cell after proper treatment to reach a certain nickel ion concentration, that is, nickel recovery. The permeate of the membrane system, that is, pure water, can directly return to the bath of the plating parts, thus realizing zero discharge of electroplating wastewater. Therefore, the zero discharge system of electroplating wastewater not only does not cause secondary pollution, but also recovers harmful heavy metals in the wastewater, turning harm into treasure and reusing water resources.
Process characteristics of electroplating wastewater zero discharge system:
The electroplating wastewater zero discharge system uses advanced special membrane separation technology, which is simple in process, stable and reliable in operation, and high in treatment efficiency.
The zero discharge system of electroplating wastewater gives full play to the advantages of special membranes. After the electroplating and circuit board wastewater is treated by this process, valuable metal ions (nickel, copper, chromium, etc.) in the wastewater can be recycled after membrane concentration. The permeate of the wastewater after membrane treatment can be reused as process water, which not only saves costs but also realizes zero discharge of wastewater.
The zero discharge system of electroplating wastewater adopts electromechanical integration design, with high degree of automation, simple operation and maintenance, easy standardized management, small floor area, few auxiliary facilities, reasonable equipment configuration, low investment and low operation cost.
