The main pollutants in electroplating wastewater are metal ions, such as chromium, copper, nickel, lead, aluminum, gold, silver,cadmium, iron and so on. They are acids and bases, such as sulfuric acid, hydrochloric acid and nitric acid. Phosphoric acid andsodium hydroxide, sodium carbonate wait, some electroplating solutions also use pigments to wait for other substances, thesesubstances are mostly organic matter, in addition, in the pretreatment process of the base material washed off Shantou grease,oil. lron oxide and dust are also brought into electroplating wastewater.
Compared with the traditional treatment process, the latest electroplating wastewater treatment scheme has greatly reduced theuse of acid-base solution, not only reduced the cost of the system. The water quality standard of this process is relatively highand can reach the standard of industrial softened water. Therefore, the recycled water can be used in some auxiliary water inproduction.3. The membrane module is used as the core of the process. The overall process design is reasonable and has avery high reliability. The operation efficiency of the system is greatly improved. 4 wastewater can be directly entered into themembrane separation equipment. The operation cost of the system is reduced without adding medicament, and the operationsteps are simplfied. The convenient management of 5.