Research on Electroplating Wastewater Treatment and Operation Effect in Jiangmen

摘要

In this paper, I use the ion exchange method for treatment of electroplating heavy metal ions in waste water and I also use a single-stage rinsing and resin enrichment combined form of management, whose wastewater contains Cu~(2+), Cr~(6+) and Ni~(2+). The process can ensure the cleaning quality, good treatment effect, which recovers the energy of nickel sulfate and copper sulfate and its returning rate reaches as 90%. That achieved the goal without discharge of nickel, copper, environment and economic benefits. Electroplating wastewater composition is very complicated, in addition to cyanide (CN-) wastewater and effluent. Wastewater with heavy metal electroplating is the potential harmful categories in the industry. According to the heavy metal wastewater containing heavy metal element classification, it can generally be divided into Cr containing nickel wastewater, wastewater containing cadmium (Ni), (Cd) wastewater, wastewater containing copper (Cu), zinc(Zn), gold(Au) from wastewater, wastewater containing silver(Ag). Electroplating wastewater treatment is widespread attention at home and abroad, which has various developed management technology and management of toxic to nontoxic, changing harmful wastewater into harmless water. Then we can recover those precious metals. Water recycling and other measures are helpful to eliminate and reduce the emission of heavy metals. With the rapid development of electroplating industry and increasing requirements of environmental protection, current electroplating wastewater treatment has begun to enter into the clean production process. According to total circular economy integration phase, the recycling of resources is the main development direction.