Method for processing cyanogens-containing waste water from gold mine

A treatment method and technology of cyanide wastewater, which is applied in the field of pollutant treatment and can solve problems such as wastewater environmental pollution

Inactive Publication Date: 2017-01-11
铜仁市万山区盛和矿业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a fast and efficient treatment method for gold mine cyanide-containing wastewater to solve the problem of environmental pollution caused by wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A treatment method for gold mine cyanide-containing wastewater, the method may further comprise the steps:

[0023] a, waste water regulation: add sulfuric acid, hydrochloric acid, sodium hydroxide solution, the copper sulfate solution that concentration is 40% to waste water, the pH value of waste water in the control reaction process is 8, and the reaction time is 25min;

[0024] b. Coagulation treatment: Stir the reacted waste water clockwise according to the linear speed of 5m / s, add alum, put the waste water into the sedimentation tank and let it stand for 20min;

[0025] c. Secondary coagulation treatment: After removing impurities, stir the wastewater according to the specified speed and add polyacrylamide to the wastewater, then put it in the sedimentation tank and let it stand for 15 minutes;

[0026] d. Ultraviolet treatment: irradiate the supernatant of the waste water with an ultraviolet lamp, and the irradiation time is 20 minutes;

[0027] e. Concentratio...

Embodiment 2

[0029] A treatment method for gold mine cyanide-containing wastewater, the method may further comprise the steps:

[0030] a, waste water regulation: add sulfuric acid, hydrochloric acid, sodium hydroxide solution, the copper sulfate solution that concentration is 50% to waste water, control the pH value of waste water in the reaction process to be 9.5, and the reaction time is 30min;

[0031] b. Coagulation treatment: Stir the reacted wastewater in a clockwise direction at a linear speed of 15m / s, add polyaluminium chloride, and put the wastewater into a sedimentation tank for 30 minutes;

[0032] c. Secondary coagulation treatment: After removing impurities, stir the wastewater according to the specified speed and add polyacrylamide to the wastewater, then put it in the sedimentation tank and let it stand for 20 minutes;

[0033] d. Ultraviolet treatment: irradiate the supernatant of the waste water with an ultraviolet lamp, and the irradiation time is 30 minutes;

[0034] ...

Embodiment 3

[0036] A treatment method for gold mine cyanide-containing wastewater, the method may further comprise the steps:

[0037] a, waste water regulation: add sulfuric acid, hydrochloric acid, sodium hydroxide solution, the copper sulfate solution that concentration is 45% to waste water, control the pH value of waste water in the reaction process to be 8.7, and the reaction time is 28min;

[0038] b. Coagulation treatment: Stir the reacted waste water clockwise according to the linear speed of 10m / s, add alum, put the waste water into the sedimentation tank and let it stand for 25 minutes;

[0039] c. Secondary coagulation treatment: After removing impurities, stir the wastewater according to the specified speed and add polyacrylamide to the wastewater, then put it in the sedimentation tank and let it stand for 18 minutes;

[0040] d. Ultraviolet treatment: irradiate the supernatant of the waste water with an ultraviolet lamp, and the irradiation time is 25 minutes;

[0041] e. C...

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PUM

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Abstract

The invention discloses a method for processing cyanogens-containing waste water from gold mine. The method comprises the following steps: waste water adjusting, coagulation processing, secondary coagulation processing, ultraviolet ray processing, and concentration reducing processing. According to the invention, a coagulant and a flocculant employed in the invention can effectively reduce the amount of suspended impurity in the waste water, a crude flocculation body can be aggregated rapidly, so that rapid separating from water can be carried out, most pollutant in the waste water can be removed effectively through precipitation, by adding zinc sulfate, the cyanide is precipitated with a zinc cyanide mode, then is acidified by sulfuric acid, the concentration of the cyanide is reduced to lower than 0.1 mg / 1, an iron-cyanogen complex is removed, The method provided by the invention has the characteristics of rapidity and high efficiency, and is the excellent method for processing cyanogens-containing waste water from gold mine.

Description

technical field [0001] The invention relates to the technical field of pollutant treatment, in particular to a treatment method for gold mine cyanide-containing wastewater. Background technique [0002] Gold mine wastewater is mainly composed of mining and beneficiation process wastewater. The water quality and quantity vary with the properties of soil and rock in the mining area, mining methods, production volume and commissions. The main pollutants in wastewater are suspended substances composed of sediment, clay, humus and grass roots and bark, followed by organic substances. Although this kind of wastewater has a certain degree of stability, it is not easy to settle during the discharge process. It makes the natural water body turbid and the chroma increases. At the same time, it has affected and damaged the phytoplankton, zooplankton, bottom sacrificial organisms and photogroups in the water ecosystem. The water quality of gold mine wastewater belongs to the multi-lev...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F103/10
Inventor 袁再六
Owner 铜仁市万山区盛和矿业有限责任公司
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