Copper ore wastewater treatment process

A copper mine wastewater treatment technology, applied in mining wastewater treatment, water/sewage treatment, special compound water treatment, etc., can solve the problems of slow efficiency and high cost of copper mine wastewater treatment, to speed up treatment efficiency and reduce wastewater retention time, the effect of improving utilization

Active Publication Date: 2015-06-24
福建洋屿环保科技股份有限公司
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  • Abstract
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Problems solved by technology

[0004] A copper mine wastewater treatment process provided by the present invention is mainly aimed at the problems of high cost and slow efficiency of existing copper mine wastewater treatment

Method used

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Embodiment Construction

[0015] A copper mine wastewater treatment process, characterized in that it comprises the following steps:

[0016] 1) Add 1%-3%w / w magnesium oxide and 1%-5%w / w industrial salt in the sedimentation tank, the industrial salt is sodium chloride, and the best addition amount is 3%w / w , where w / w is the mass fraction.

[0017] 2) The magnesium oxide and sodium chloride are mixed with the copper mine wastewater by aeration or stirring.

[0018] 3) Mix and stir magnesium oxide, sodium chloride and copper mine waste water for a period of 2-5 minutes, let magnesium oxide react with water during stirring to generate magnesium hydroxide, copper ions and other trace heavy metals in magnesium hydroxide and copper mine waste water The ions react to form precipitates and suspended solids, and at the same time, sodium chloride reacts with magnesium oxide to accelerate the dissolution of magnesium oxide.

[0019] 4) After the stirring is stopped, the sediment in the wastewater is allowed to...

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Abstract

The invention discloses a copper ore wastewater treatment process. The copper ore wastewater treatment process is characterized by comprising the following steps: 1) adding 1%-3% w / w magnesium oxide and 1%-5% w / w industrial salt into a settling pond; 2) mixing the magnesium oxide with the industrial salt and the copper ore wastewater by aerating or stirring; 3) mixing and stirring the magnesium oxide, the industrial salt and the copper core wastewater for certain time, reacting the magnesium oxide with water during stirring to generate magnesium hydroxide, reacting the magnesium hydroxide with copper ion and other trace heavy metal ions in the copper core wastewater to generate precipitates and suspended matters, and reacting the industrial salt with the magnesium oxide to quicken dissolving the magnesium oxide; 4) after stopping stirring, settling the precipitates in the wastewater, separating the settled precipitates and the suspended matters from surface-layer wastewater, discharging the surface-layer wastewater and removing a great number of precipitates and the suspended matters. According to the copper core wastewater treatment process disclosed by the invention, the adding amount of a pH value regulator can be reduced, the treatment efficiency of the copper core wastewater is quickened, and the treatment cost is reduced for the enterprises.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a copper mine wastewater treatment process. Background technique [0002] In recent years, with the rapid growth of the world's demand for copper, the intensity of copper mining has been continuously strengthened, and more and more pollutants are discharged during the mining process of copper mines, and the harm to the ecological environment has become more and more serious. Among these pollutants, copper mine wastewater is the most polluted and the most harmful. At present, the comprehensive treatment rate of copper mine wastewater in the country is only 70%, and about 30% of the wastewater is directly discharged without treatment, and the operation rate of the existing treatment equipment is only 20%. Exploitation and utilization have become one of the industries that cause the most serious pollution to the water ecological environment. [0003] At present, copper mine was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/66C02F103/10
CPCC02F1/5209C02F1/66C02F2103/10C02F2305/02C02F2305/04
Inventor 钟云峰钟云平蔡其旺黄紫洋池爱珠林杰张舜贤钟文庭林鲲成陈国煌
Owner 福建洋屿环保科技股份有限公司
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