There are many metallurgical industrial products, and the production processes are in series. A large amount of wastewater is discharged, which is one of the main wastewater that pollutes the environment.

Circulating water is an important measure for metallurgical wastewater treatment. Develop and adopt new processes and technologies with little or no water use and with no or little pollution. Develop comprehensive utilization, recover useful materials and heat energy from waste water and waste gas, and reduce the loss of materials and fuel. According to different water quality requirements, the water in the enterprise should be comprehensively balanced and used in tandem. Meanwhile, the water quality stability measures should be improved to continuously improve the water recycling rate. To develop new treatment processes and technologies suitable for the characteristics of Metallurgical Wastewater.

The main characteristics of metallurgical wastewater are large amount of water, many kinds of wastewater and complex water quality. According to the source and characteristics of wastewater, it mainly includes: cooling water, acid washing wastewater, dust removal and gas, flue gas washing wastewater, slag washing wastewater and wastewater condensed, separated or spilled from the production process.

Test index

Metallurgical industrial wastewater is produced in the wet smelting process of various non-ferrous metals such as copper, zinc, lead, gold and silver. The waste water contains high concentration of metal ions, which is not allowed to be discharged and should be recycled as much as possible. Finally, the wastewater that must be discharged should be treated by coagulation sedimentation and flotation, and then discharged after reaching the discharge standard. For the raw materials of copper, zinc and lead sulfide ore, the by-product sulfuric acid is obtained when the ore is oxidized and roasted, and the high concentration strong acid wastewater is discharged. At this time, the corresponding neutralization treatment is needed.