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Method for treating gold production sewage

A technology for the production of sewage and treatment methods, which is applied in metallurgical wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can solve the problems of high difficulty in gold production sewage treatment and large economic investment, and achieve a balance The effect of sewage treatment cost, low construction cost and long service life

Inactive Publication Date: 2013-08-21
招金矿业股份有限公司金翅岭金矿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a treatment method for gold production sewage to solve the problems of high difficulty in gold production sewage treatment and large economic investment

Method used

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  • Method for treating gold production sewage
  • Method for treating gold production sewage
  • Method for treating gold production sewage

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The mineral processing wastewater is about 800 cubic meters, which is filtered through the grille to remove impurities such as weeds, and then enters the mineral processing wastewater pool and is exposed to the sun for 4 hours to obtain the primary mineral processing wastewater.

[0043] About 50 cubic meters of acidic wastewater, PH = 0.7, and 1,000 cubic meters of alkaline wastewater, PH = 11, were filtered with grids to remove impurities such as weeds, and then mixed in the acid-base comprehensive wastewater pool to obtain acid-base mixed wastewater , its PH=4 was determined.

[0044] 20 cubic meters of cyanide-containing wastewater enters the cyanide-breaking reaction pool after passing through the grille to remove impurities such as weeds. After determination, the CN of cyanide - The concentration concentration is 1500mg / L. Air is introduced into the cyanide-breaking reaction tank, and then sodium metabisulfite is added to make it mix with the CN in the cyanide w...

Embodiment 2

[0055] The mineral processing wastewater is about 500 cubic meters, which is filtered through the grille to remove impurities such as weeds, and then enters the mineral processing wastewater pool and is exposed to the sun for 5-6 hours to obtain the primary mineral processing wastewater.

[0056] About 20 cubic meters of acidic wastewater, PH = 1, and 600 cubic meters of alkaline wastewater, PH = 11, were filtered with grids to remove impurities such as weeds, and then mixed in the acid-base comprehensive wastewater pool to obtain acid-base mixed wastewater , its PH=4 was determined.

[0057] 10 cubic meters of cyanide-containing wastewater enters the cyanide-breaking reaction pool after passing through the grid to remove impurities such as weeds. After determination, the CN of cyanide - The concentration concentration is 1500mg / L. Air is introduced into the cyanide-breaking reaction tank, and then sodium metabisulfite is added to make it mix with the CN in the cyanide waste...

Embodiment 3

[0067] About 600 cubic meters of beneficiation wastewater is filtered through a grid to remove impurities such as weeds, and then enters the beneficiation wastewater pool and is exposed to the sun for 8 hours to obtain primary beneficiation wastewater.

[0068] About 10 cubic meters of acidic wastewater, PH = 1, and 200 cubic meters of alkaline wastewater, PH = 11, were filtered with grids to remove impurities such as weeds, and then mixed in the acid-base comprehensive wastewater pool to obtain acid-base mixed wastewater , its PH=4 was determined.

[0069] 15 cubic meters of cyanide-containing wastewater enters the cyanide-breaking reaction pool after passing through the grille to remove impurities such as weeds. After determination, the CN of cyanide - The concentration concentration is 1500mg / L. Air is introduced into the cyanide-breaking reaction tank, and then sodium metabisulfite is added to make it mix with the CN in the cyanide wastewater. - The mol ratio is 1.2:2, ...

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Abstract

The invention relates to a method for treating gold production sewage. The method comprises the following steps of: performing filtration pretreatment on wastewater produced in a gold production process; mixing the pretreated wastewater, then adjusting the pH of the mixed liquid to 6.7-7.2, then enabling the mixed liquid to flow into a transverse flow settling tank, and separating the mixed liquid to be preliminary wastewater and transverse flow precipitates; measuring the pH value of the preliminary wastewater, adjusting the pH of the preliminary wastewater to 6.7-7.2 by acid or alkaline, then enabling the preliminary wastewater to flow into an upright flow settling tank, and separating the preliminary wastewater into secondary wastewater and upright flow precipitates; discharging the secondary wastewater into an electric flocculation device for flocculation to obtain third wastewater containing flocculates; enabling the third wastewater containing flocculates to flow into an inclined pipe settling tank to obtain clean water subjected to flocculation settling and treatment. By a combined technology for discharging cyanide by sodium metabisulfite and removing heavy metals by electric flocculation, various gold production wastewater can be treated at the same time, and noble metal such as gold, silver and copper in the wastewater can be effectively recycled; the cost for treating the wastewater is lower; and the operation technology is simple.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment method for gold production sewage. Background technique [0002] Gold smelting production is an industry that produces a large amount of sewage. According to the production process, generally about 4 tons of sewage are discharged to treat 1 ton of gold concentrate, and some are even higher. Gold smelting production sewage is not only a large amount, but also a kind of organic and inorganic sewage with complex composition and high concentration, which contains a large amount of lime, acid, salt, nitro compounds, sulfides, surfactants, slag, mud sand and other toxic and harmful substances. substance. COD, Cr, heavy metal ions, sulfide, cyanide, suspended solids, etc. are very high, and it is a kind of industrial sewage that is difficult to treat. [0003] In recent years, the state and industry authorities have become more and more strict on the control of wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F103/16
Inventor 李学强徐忠敏高利发翁占平何毅李雪林
Owner 招金矿业股份有限公司金翅岭金矿
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