1. scope of application

Non-ferrous metal smelting and rolling processing industry

2. Brief description of technology

This technical achievement changes the previous simple traditional process routes such as acid and alkali neutralization. Based on resource recovery, hazardous waste reduction, and operation energy conservation, it proposes a set of non-ferrous metals including recycling valuable matter technology, high-salt water energy-saving treatment technology, etc. Zero emission treatment process for metal processing wastewater. The technical achievements mainly include: 1. Comprehensive wastewater treatment technology with low concentration and large volume volume. 2. Evaporation crystallization treatment technology for high-salt wastewater. 3. Non-ferrous metal recovery and acid recovery and treatment technology for high-concentration acidic waste liquor. 4. System control technology for the entire process. 5. A zero-emission wastewater treatment technology that combines the above treatment technologies.

3. technical information

This zero-emission process package mainly includes: acid and non-ferrous metal recovery unit, classified pretreatment unit, comprehensive wastewater treatment unit, wastewater multi-level concentration unit, MVR evaporation unit, etc.

4. comprehensive benefits

1. Economic benefits The economic benefits of the zero-emission industrial wastewater project of non-ferrous metal processing enterprises are mainly reflected in indirect investment benefits and are expressed by reducing the economic losses caused by water pollution to society. This achievement can greatly reduce pollution to surrounding waters and promote the sustainable development of economic construction. Compared with traditional treatment, it has obvious advantages in resource recovery, hazardous waste reduction, energy conservation and consumption reduction, and has better economic benefits. 2. Social benefits The effect of wastewater treatment is to reduce pollution, purify water resources, improve people's quality of life, and improve the environment of the residential area where the enterprise is located. Its social benefits are also very significant. This research and development result is conducive to improving local water pollution and protecting local water resources. 3. Environmental benefits The implementation of zero-emission industrial wastewater has minimized the pollution of production wastewater from non-ferrous metal processing enterprises to the local water environment, and plays an important role in improving the water quality of regional river basins and achieving sustainable economic development.