Copper mine wastewater comprehensive treatment method

A technology for comprehensive treatment of mine wastewater, applied in mining wastewater treatment, water/sewage treatment, water treatment parameter control, etc., can solve problems such as high salinity and total iron content, high treatment cost, unstable COD up to standard, etc. Achieve efficient removal, reduce dosage and improve flocculation effect

Active Publication Date: 2020-06-19
JIANGXI ACADEMY OF SCI
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Problems solved by technology

However, this treatment process only considers the neutralization of acid-base wastewater to reduce lime, but does not consider the impact of alkaline wastewater with high COD and high flotation agent on the overall treatment effect. The treated water has a low pH and unstable COD. , salinity and total iron content are high, and the treatment cost is as high as 5.6 yuan / m 3

Method used

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  • Copper mine wastewater comprehensive treatment method
  • Copper mine wastewater comprehensive treatment method
  • Copper mine wastewater comprehensive treatment method

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Embodiment 1

[0049] The acidic wastewater of a copper mine comes from the bottom water tank of the open-pit mining area, the acidic wastewater discharged from the waste rock field, the raffinate from the heap leaching site and the copper recovery solution. It is formed by oxidizing sulfur in ore to sulfuric acid under the action of a series of chemical reactions and microbial catalysis.

[0050] The acid wastewater is transported to the industrial water treatment station for treatment through long-distance fiberglass pipelines. The water sources are the water tank at the bottom of the mining area, the waste rock field, and the extraction workshop, and the total annual water treatment volume is about 14.5 million m 3 . Its water quality is:

[0051]

[0052] The alkaline wastewater of the copper mine is mainly composed of mineral processing flotation wastewater of the mineral processing plant. At present, the alkaline water collected in front of the alkaline wastewater pump station is ...

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Abstract

The invention belongs to the technical field of environmental protection, and particularly relates to a copper mine wastewater comprehensive treatment method. According to the method disclosed by theinvention, under the condition that the pH value is not adjusted, the high-COD alkaline wastewater is firstly treated in a centralized manner, so that the removal rate of COD reaches 80% or above. According to the method, the low-COD alkaline treatment water is used as a neutralizer to be mixed with the acid wastewater, so that high heavy metals in the acid wastewater are removed, the subsequent sludge treatment cost can be reduced, and the risk of pipeline scaling caused by CaSO4 can be reduced to prolong the treatment life of the whole treatment process. The method provided by the inventioncan effectively remove COD, SS and heavy metals, has the characteristics of high efficiency, strong impact load resistance, no secondary pollution, no need of additional nutrient source in the use process and the like, has the advantages of low investment and operation cost and simple operation, and can be suitable for treatment of copper mine wastewater.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a comprehensive treatment method for copper mine wastewater. Background technique [0002] Copper mine wastewater mainly includes sulfur-containing acid wastewater in mining areas and overflow alkaline wastewater in mineral processing areas; sulfide-containing ores, under the biocatalytic oxidation of thiophilic bacteria and other ore-leaching bacteria, oxygen, water and Sulfides work together to produce a large amount of S-containing 2- , SO 4 2- Acidic wastewater with heavy metal ions, and acidic conditions are more conducive to the action of thiobacillus and other leaching bacteria and the dissolution of heavy metal ions, thus aggravating the production of acidic wastewater. If the acidic wastewater is not treated, it will cause serious environmental pollution, and the treatment of acidic wastewater will bring a heavy economic burden to the mine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/20C02F101/22C02F101/30C02F103/10
CPCC02F1/24C02F1/32C02F1/5245C02F1/542C02F1/56C02F1/66C02F1/78C02F9/00C02F2101/20C02F2101/203C02F2101/206C02F2101/22C02F2101/30C02F2103/10C02F2209/08
Inventor 邓觅梁培瑜吴永明涂文清游海林姚忠刘煜
Owner JIANGXI ACADEMY OF SCI
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