Non-ferrous mine waste water treatment technology

Abstract

The invention discloses a non-ferrous mine waste water treatment technology. The technology comprises the following steps: regulating the pH value of mine waste water to be 8-10, feeding coagulation chemicals for coagulation and standing precipitation; applying ultrasonic wave to the precipitated supernatant and leading into ozone so as to conduct ultrasonic / ozone synergistic advanced oxidization reaction; after reaction, feeding coagulation chemicals into effluent water for conducting secondary coagulation and precipitation; and applying ultrasonic wave to the precipitated supernatant and leading into ozone so as to conduct secondary ultrasonic / ozone synergistic advanced oxidization reaction, and enabling the oxidized effluent water to return into the production technology flow or reach the standard and be emitted. According to the complicated water quality and difficult treatment characteristics of the non-ferrous mine waste water, the waste water is treated by synergizing the ultrasonic / ozone two-section advanced oxidization technology and two-section coagulation-precipitation technology, the non-ferrous mine waste water treatment technology is good in treatment effect, high in treatment efficiency, stable for system running, simple in flow, convenient for realization of industrial application, especially achieves the advantages, which are difficultly achieved by adopting other technologies, for the non-ferrous mine waste water difficult to treat.

Description

technical field [0001] The invention relates to the fields of environmental protection technology and water treatment technology, in particular to a treatment process for colored mine wastewater. Background technique [0002] Non-ferrous mine wastewater mainly includes mining mine water and mineral processing wastewater, of which mineral processing wastewater accounts for the majority. The quality of non-ferrous mine wastewater is complex, with various components, including various heavy metals, organic chemicals and other pollutants. If it is discharged outside, it will affect the surrounding ecological environment. If it is returned to the production process, as the harmful substances in the wastewater will continue to accumulate, it will also have an adverse impact on the production process and equipment. Therefore, it is necessary to choose an appropriate treatment method to treat these wastewater. At present, the commonly used treatment methods include chemical precipit...

AI Technical Summary

Problems solved by technology

[0002] Non-ferrous mine wastewater mainly includes mining mine water and mineral processing wastewater, of which mineral processing wastewater accounts for the majority. The quality of non-ferrous mine wastewater is complex, with various components, including various heavy metals, organic chemicals and other pollutants. If it is discharged outside, it will affect the surrounding ecological environment. If it is returned to the production process, as the harmful substances in the wastewater will continue to accumulate, it will also have an adverse impact on the production process and equipment. Therefore, it is necessary to choose an appropriate treatment method to treat these wastewater

At present, the commonly used treatment methods include chemical precipitation method, adsorption method, microbial method, artificial wetland method, etc. Although these treatment methods have certain advantages, they are generally limited by factors such as mine production conditions, environmental conditions or treatment requirements. For example, the chemical precipitation method is relatively effective in treating heavy metals, but the treatment effect of organic substances is poor; the adsorption method can effectively treat heavy metal wastewater, but when the adsorbent is regenerated, the pollutants will be regenerated; the cost of microbial treatment is relatively low, but Reaction conditions are relatively harsh, and it is difficult to be popularized and applied; the wetland method occupies a large area, and the treatment cycle is long, and it is difficult to meet the treatment requirements