In recent years, with the improvement of China's requirements for cleaner production in electroplating industry and the introduction of some local laws and regulations, zero discharge of wastewater from electroplating enterprises has become a development trend in the new era. Membrane separation technology Zero discharge of electroplating wastewater It has been widely used and achieved good results. The zero discharge of electroplating wastewater plays an important role. So, what is the way to achieve zero discharge of electroplating wastewater?

The electroplating industry has rectified the wastewater treatment system, realizing zero discharge of electroplating wastewater. Realize zero discharge of electroplating wastewater:

1. First, adjust and improve production, save water, improve the recycling rate of production water, distribute and pretreat all kinds of wastewater, and try to reduce the final amount of wastewater treatment.

2. In order to transform the existing sewage treatment system, the sewage treatment system adopts the traditional chemical precipitation process, which is technically feasible. However, since the processing system has operated for many years, the equipment needs to be updated to further improve the degree of automation.

1. Reuse of wastewater and reduction of rinsing water consumption can further meet the requirements of "zero discharge" of wastewater, reduce the scale of biochemical and physicochemical treatment, and zero discharge of electroplating wastewater is conducive to the expansion of production demand of enterprises.

2. Recycling useful metal ions enables enterprises to achieve environmental protection while producing benefits.

3. Heavy metal wastewater is transformed into solid waste through evaporation and crystallization, which alleviates the concern of substandard discharge.

4. The process mainly adopts multi-stage membrane concentration equipment, which is highly automated and easy to operate.

5. The process actively responds to national environmental protection requirements and meets future environmental protection design requirements.

The zero discharge of electroplating wastewater should refer to the zero discharge of all wastewater generated in the electroplating workshop. However, in such wastewater, due to the variety and complexity of pollutants, there are not only various heavy metal ions, but also cyanide ions, as well as various complexes, additives, and a large number of acids, alkalis, salts, organics and suspended solids. At the same time, various pollutants in the wastewater also interact to generate pollutants that are more difficult to degrade and remove, Therefore, such electroplating wastewater is a change of discharge mode, rather than a real zero discharge of electroplating wastewater. Conversely, if the zero discharge of electroplating wastewater can be realized, the newly-built electroplating enterprises, including the newly-built electroplating industrial parks, will not need to set up electroplating wastewater discharge outlets.