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Electroplating equipment for wastewater treatment equipment and methods


Electroplating equipment Electroplating is to contain the metal-containing salt solution, with the substrate metal as the cathode, by electrolysis, so that the plating solution to be metallized cations in the base metal surface deposition, the formation of a coating surface processing method. Coating performance is different from the base metal, with new features. According to the function of the coating is divided into protective coating, decorative coating and other functional coating.

Electroplating is an electrochemical process and is a process of redoxing. The basic process of electroplating is that the part of the electroplating process is the most important part of the electroplating process. The electroplating process is the process of electroplating, Immersed in the metal salt solution as a cathode, metal plate as the anode, then DC power supply, the parts deposited on the required coating.

Electroplating wastewater treatment equipment electroplating wastewater treatment using: physical and chemical methods, biological treatment, ion exchange, electrolysis and so on. The above methods to deal with the high cost of electroplating wastewater, the operation of complex, a large number of low concentrations of harmful pollutants difficult to deal with and so on.

In view of China's current electroplating industry wastewater treatment status quo of the statistics and surveys, widely used in the main seven different classification methods:

(1) chemical precipitation method, and is divided into neutralization and sulfide precipitation method

(2) oxidation and reduction treatment, divided into chemical reduction method, ferrite method and electrolysis.

(3) Adsorption method.

(4) solvent extraction separation method.

(5) ion exchange method.

(6) membrane separation technology.

(7) biological treatment technology, including bioflocculation, biosorption, biochemical methods, phytoremediation. But there are some disadvantages or serious irrationality.

In view of the comprehensive discharge of water in the electroplating industry, the difficult problem of low concentration of harmful substances and the environmental protection pressure of the new standard, the membrane integration process has been carried out to classify the electroplating wastewater in order to effectively improve the economy of the traditional wastewater treatment technology , Not only the complete elimination of low concentrations of waste water hazardous substances to meet the latest industry emission standards, and further in-depth treatment, so that wastewater to achieve different production reuse standards.