Zero-emission treatment technology for ore mining and dressing wastewater containing heavy metals

Abstract

The invention belongs to the technical field of industrial wastewater treatment, and provides a zero-emission treatment technology for ore mining and dressing wastewater containing heavy metals in order to solve the problems of discharge treatment of wastewater containing heavy metals in the prior art. The technology comprises the following steps: S1, the wastewater is conveyed into a pretreatmentdevice from a water inlet tube a water pump and is pretreated; S2, the pretreated wastewater is conveyed into an electrochemical device and undergoes electrochemical treatment; S3, the electrochemically treated wastewater is conveyed into an ultrafiltration device, and undergoes membrane filtration treatment; and S4, the wastewater obtained after membrane filtration treatment is conveyed into a steam filtering device, and undergoes steam filtration treatment, and the wastewater subjected to the steam filtration treatment is detected and discharged. The technology can effectively harmlessly remove impurities from the wastewater by the a series of processes such as pretreatment, electrochemical treatment, membrane filtration treatment and steam filtration treatment, so the technology can effectively recycle the heavy metals in the wastewater, achieve zero-emission standard of heavy metal salts and reduce the harmful pollution of wastewater emission to the ecological environment.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a zero-discharge treatment process for mining and dressing wastewater containing heavy metals. Background technique [0002] The serious shortage of water resources is a major problem that affects the survival and stability of our country, and the quality-based water shortage of environmental pollution is very serious. In the non-ferrous metal industry, wastewater is discharged throughout the entire production process from mining, beneficiation, smelting to product processing. In 2007, the wastewater discharge of the entire non-ferrous metal industry was about 752 million cubic meters, and it increased year by year. Among them, the harmful substances in the mineral processing wastewater are mainly heavy metal ions, various inorganic and organic flotation agents used in flotation, including highly toxic cyanide and cyanide complexes. Mineral processing was...

AI Technical Summary

Problems solved by technology

[0003] During the treatment of heavy metal organic wastewater from mining and beneficiation, heavy metal salts cannot be effectively recycled, and organic wastewater containing heavy metals is discharged into nature, which will cause serious pollution to surface water bodies and affect soil quality changes, even Affect the local agricultural development. In addition, the heavy metal organic wastewater cannot be well treated, and the wastewater treatment cannot meet the corresponding standards, which will limit the sustainable development of the heavy metal industry. While the loss of heavy metals is serious, it will also cause serious damage to the ecological environment. Irreversible harmful effects that seriously affect the ecological balance and sustainable development of the industrial environment