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Treatment process for mine water of coal deep well

A treatment process and technology for mine water, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of unreasonable underground mine water treatment, complicated equipment and operation process, and low service life, so as to achieve a small footprint and use The effect of long life and reliable operation

Inactive Publication Date: 2012-06-27
SCIMEE TECH & SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Chinese patent "A Mine Water Treatment Process" (CN 101786760 A) is a process for removing suspended solids in mine water by simple flocculation. This process has a certain effect on suspended solids in mine water, but it occupies a large area and is The equipment and operation process of the process are relatively complicated, and it is obviously unreasonable for underground mine water treatment
Another example is the Chinese patent "A high-efficiency mine water treatment process" (CN 101544431A) and "A mine water advanced treatment device and method for underground coal mines" (CN 101712516 A). These two processes use osmosis to treat mine water. Although the effect of mine water is very good, due to the use of membrane ultrafiltration, the service life of the equipment is very low and the treatment capacity is very small
Another example is the Chinese patent "Method for Treating Mine Water Using Space in Mine Underground Roadway" (CN 100439266C). This process needs to lift mine water from underground to the ground through a pump, which is economically unreasonable.
[0004] Due to the complexity of coal mine water composition and regional characteristics and other factors, the existing treatment technology is not perfect and mature enough, and the development and research of new technology and new equipment with simple technology, reliable technology, convenient management, and economical rationality is still a priority for coal mines. Important Issues in Water Treatment and Utilization

Method used

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  • Treatment process for mine water of coal deep well
  • Treatment process for mine water of coal deep well

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The site of a coal deep mine water purification treatment project, with a treatment scale of 6000m3 / d. Utilize the technical scheme described in claim 7 of the present invention to process, and the cylindrical sieve screen mesh is 1mm; The high-speed stirring speed is 3000r / min; The equipment used is a drum magnetic separator with a magnetic field strength of 2500Gs; the magnetic separator used in the magnetic separation process is a magnetic disk structure.

[0028] The specific experimental conditions are as follows:

[0029] The influent SS is 505.4mg / L, the effluent SS is 8.6mg / L, and the removal rate is 98.3%. When the influent turbidity is 610NUT, the effluent turbidity is 8NTU, and the removal rate is 98.6%. When the influent TP is 0.625mg / L, the effluent TP is 0.087mg / L, and the removal rate is 86.1%. The influent COD is 127mg / L, the effluent COD is 47mg / L, and the removal rate is 63%. The yield of sludge was 0.1%, and the recovery rate of magnetic seeds was...

Embodiment 2

[0031] The site of a deep mine water purification treatment project in a coal mine, with a treatment scale of 10,000m3 / d. Utilize the technical scheme of claim 8 of the present invention to process, the cylindrical sieve screen is 5mm; the high-speed stirring speed is 1500r / min; the magnetic seed is a magnetic iron mineral, and its particle diameter is at 0.03mm; the equipment used in the magnetic seed recovery process is Drum type magnetic separator, the magnetic field strength is 4000Gs; the magnetic separator used in the magnetic separation process is a magnetic disk structure.

[0032] The specific experimental conditions are as follows:

[0033] The influent SS is 494mg / L, the effluent SS is 6.0mg / L, and the removal rate is 98.7%. When the influent turbidity is 532NUT, the effluent turbidity is 6.6NTU, and the removal rate is 98.8%. When the influent TP is 0.17mg / L, the effluent TP is 0.013mg / L, and the removal rate is 92.4%. The influent COD is 54mg / L, the effluent CO...

Embodiment 3

[0035] The test site of deep mine water purification treatment in a coal mine, with a treatment scale of 1400m3 / d. Utilize the technical scheme of claim 8 of the present invention to process, and the cylindrical sieve screen mesh is 3mm; The high-speed stirring speed is 2000r / min; The magnetic seed is a magnetic iron mineral, and its particle diameter is at 0.15mm; The equipment used in the magnetic seed recovery process is Drum type magnetic separator, the magnetic field strength is 3000Gs; the magnetic separator used in the magnetic separation process is a magnetic disk structure.

[0036] The specific experimental conditions are as follows:

[0037] When the influent SS is 604.7mg / L, the effluent SS is 14.2mg / L, and the removal rate is 97.6%. When the influent TP is 0.705mg / L, the effluent TP is 0.108mg / L, and the removal rate is 97.1%. The influent COD is 56.7, the effluent COD is 23.2, and the removal rate is 58.2%. The yield of sludge was 0.2%, and the recovery rate o...

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Abstract

The invention belongs to the field of sewage treatment, and particularly relates to a treatment process for the mine water of a coal deep well. The process comprises the following working procedures of: removing impurities; magnetizing to coagulate; flocculating; magnetically separating; deflocculating magnetic floccules; and recovering magnetic seeds, wherein the deflocculating magnetic floccules means adding water in the magnetic floccules separated out in the working procedure of magnetically separating to stir with a high speed, and dispersing out sludge and magnetic seeds in the magnetic floccules; and the recovering magnetic seeds means recovering magnetic seeds from the sludge after the magnetic floccules are deflocculated. The treatment process disclosed by the invention is reliable in operation and high in the recovery rate of magnetic powder in treatment for the mine water of coal deep well, and solves the technical problems unsolved in the technical field of water treatment for the mine water of coal deep well.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a treatment process for coal deep mine water. Background technique [0002] Water resources are the basis for human survival and development, and the shortage of water resources has seriously affected people's livelihood and economic and social development. Coal mine is one of the main energy sources in our country, but in the process of mining and utilization of coal mine, it has brought a series of environmental and ecological problems to our country, and it is one of the sources of water pollution in our country. According to statistics, in 2005, the amount of water gushing out of coal mines in my country was 4.2 billion m 3 about. Since my country's coal mines are mainly concentrated in water-scarce areas such as Shanxi Province, Inner Mongolia Autonomous Region, and Shaanxi Province, the treatment and recycling of mine water is of great significance for improving the loca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 倪明亮陈立
Owner SCIMEE TECH & SCI CO LTD
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