Mine water deeply purifying method and apparatus

A technology for deep purification and mine water, which is applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of large chemical dosage, loose sail structure, strong volatility, etc.

Inactive Publication Date: 2006-08-02
BEIJING MINE WASTE TECH
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Problems solved by technology

The problems of the above process are: the structure of the sail formed by the suspended matter in the water and the coagulant is loose, and the settling performance is poor. Therefore, the quality of the effluent is greatly affected by the dosage and the settling time, and the fluctuation is strong.
For mine water with high salinity, especially high SO 4 2- For mine water, methods such as chemical precipitation and pressure filtration are often used. The problems of this method are: large amount of chemical dosage, high cost, cumbersome process, large floor area and difficult sludge treatment.

Method used

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  • Mine water deeply purifying method and apparatus

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Embodiment Construction

[0014] The experimental device in the accompanying drawings is used, the hollow fiber microfiltration membrane used is polypropylene material, and the membrane area of ​​the module is 1.0m 2 , the roll-type nanofiltration membrane used is polyamide material, and the membrane area of ​​the module is 2.6m 2 .

[0015] Operating conditions: (1) High-suspended mine water is only treated by the CMF reactor, and no longer enters the nanofiltration membrane device. The dosage of polyaluminum chloride is 20ppm, and the suction negative pressure is 0.05MPa. The water quality before and after treatment is shown in Table 1.

[0016] (2) After the high sulfate mine water is treated by the CMF reactor, it enters the nanofiltration membrane device for desalination treatment.

[0017] The dosage of polyaluminum chloride is 10ppm, the suction negative pressure is 0.05MPa, and the operating pressure of nanofiltration membrane is 0.7MPa. The water quality before and after treatment is shown...

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Abstract

The present invention discloses one kind of mine water deeply purifying method and apparatus capable of purifying mine water to reach drinking water standard and utilizing mine water resource effectively. The method includes two parts, flocculating and microfiltering, and nanofiltering; and the corresponding apparatus includes a flocculating and microfiltering reactor and a nanofiltering film filter mainly. The main technological conditions include flocculant throwing amount of 5-30 mg/L, filtering diameter of the microfiltering film of 0.1-10 micron, negative pressure for sucking of 0.05-0.2 MPa, the MgSO4 intercepting rate of the nanofiltering film of 95.0-99.0 %, and operation pressure of 0.4-1.0 MPa. The present invention can realize automatic control and mobile treatment, and is suitable for deep purifying treatment of different types of mine water.

Description

technical field [0001] The invention relates to a method and device for deep purification of waste water, in particular to a method and device for deep purification of mine water. Background technique [0002] Mine water is the groundwater that gushes out during the coal mining process. It is collected into the underground water tank through various underground ports and then discharged to the ground above the well. Most mining areas in my country are severely water-scarce areas. Reuse of mine water for life and production after advanced treatment can not only greatly alleviate the environmental pollution of mine water, but also open up new water sources for mining areas and greatly alleviate the water shortage in mining areas. contradiction. [0003] Mine water quality is affected by geological conditions, coal seam characteristics, coal mining technology and other factors. Among them, mine water containing suspended solids and mine water with high salinity are the most co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/44C02F1/58
Inventor 孟洪李生牛晋辉张国俊
Owner BEIJING MINE WASTE TECH
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