High-salinity and high-salinity mine water treatment device for high-altitude area

Abstract

The utility model discloses a high-salinity and high-salinity mine water treatment device in a high-altitude area, and belongs to the technical field of water treatment. Comprising a first filtering device which is connected with a mine water hardness removing device; the mine water hardness removal device is connected with the low-pressure reverse osmosis device through a first water conveying pipeline; a hardness meter is connected in the first water conveying pipeline; the first water conveying pipeline is connected with the crystallization reactor through a second water conveying pipeline behind the durometer, a water outlet of the crystallization reactor is connected with the second filtering device, and a water outlet of the second filtering device is connected with the low-pressure reverse osmosis device; the first water conveying pipeline is provided with a first control valve; the second water conveying pipeline is provided with a second control valve; the utility model solves the problems that the mine water in the high altitude area is high in salt concentration, high in mineralization degree and difficult to reach the reuse standard.

Description

Technical Field

[0001] The utility model belongs to the technical field of water treatment, in particular to a device for treating high-salt and high-mineralization mine water in high-altitude areas. Background Art

[0002] Coal mining operations at high altitudes generate large quantities of mine water, which is typically high in salts and mineralization. Due to the large volume of mine water generated and consumed, coal mines have lower water quality requirements than tap water. Using only deep well water or tap water would create a significant demand for water, resulting in a waste of water resources. Therefore, mine water must be treated and reused. Conventional mine water treatment systems, consisting of a "water quality conditioning device + coagulation and sedimentation device + filtration device," often have low efficiency in treating salts and mineralization. While effective for treating mine water from certain low-salinity and low-mineralization coal mines, they are less effective for treating high-salinity and high-mineralization mine water from high-altitude areas. Furthermore, high-salinity and high-mineralization mine water is corrosive to conventional treatment equipment. Using conventional treatment equipment would shorten the equipment's lifespan, hindering the long-term operation of mine water treatment. Utility Model Content

[0003] This utility model overcomes the shortcomings of the existing technology and proposes a high-altitude high-salinity and high-mineralization mine water treatment device to solve the problem that the mine water in high altitude areas has high salt concentration and high mineralization, and it is difficult to meet the national reuse standards using ordinary mine water treatment devices. This utility model is achieved through the following technical solutions:

[0004] A high-salt and high-mineralization mine water treatment device for high-altitude areas, comprising a first filter device, a mine water hardness removal device, a low-pressure reverse osmosis device, a second filter device and a crystallization reactor; the water outlet of the first filter device is connected to the mine water hardness removal device; the mine water hardness removal device is connected to the low-pressure reverse osmosis device through a first water supply pipeline; a hardness tester is connected to the first water supply pipeline; the first water supply pipeline is connected to the crystallization reactor through a second water supply pipeline after the hardness tester, the water outlet of the crystallization reactor is connected to the second filter device, and the water outlet of the second filter device is connected to the low-pressure reverse osmosis device; the first water supply pipeline is provided with a first control valve, and the second water supply pipeline is provided with a second control valve.

[0005] Furthermore, the water outlet of the first filter device is connected to the mine water hardness removal device through a reverse osmosis water inlet pump.

[0006] Furthermore, the hardness tester is electrically connected to a controller, and the opening and closing of the first control valve and the second control valve are controlled by the controller.

[0007] Furthermore, a stirring device is provided inside the crystallization reactor.

[0008] Furthermore, the crystallization reactor is provided with a seed crystal feeding port.

[0009] Furthermore, the water outlet of the first filtering device is connected to two mine water hardness removal devices; the two mine water hardness removal devices are respectively connected to a low-pressure reverse osmosis device through a first water pipeline.

[0010] The beneficial effects of the present invention compared to the prior art are as follows:

[0011] Through the application of this device, high-salt and high-mineralization mine water in high-altitude areas can be effectively treated, solving the problem that mine water in high-altitude areas has high salt concentration and high mineralization, and ordinary mine water treatment processes are difficult to meet national reuse standards.

[0012] The utility model adds a mine water hardness removal device after the filtering device to further remove minerals in the mine water and reduce the processing pressure of the low-pressure reverse osmosis device. The hardness removal device is widely used, the equipment process is perfect, and the investment cost is low. The low-pressure reverse osmosis device is then used to efficiently remove high-concentration salts and minerals in the mine water on the basis of significantly reducing the hardness, so that the water quality of the treated mine water is greatly improved and meets the coal mine water reuse standard.

[0013] The utility model sets a hardness meter in front of the low-pressure reverse osmosis device to monitor the hardness index at the water inlet of the low-pressure reverse osmosis device. If the hardness treatment conditions of the low-pressure reverse osmosis device cannot be met, the valve is switched by the controller to lead the water to the crystallization reactor for preliminary treatment. The water is treated under the action of crystal seeds added in the crystallization reactor, and the stirring in the crystallization reactor is combined to allow the excessive salts and minerals in the water body to continue to crystallize and settle. The water is then filtered through the filtering device and then enters the low-pressure reverse osmosis device, which can effectively improve the water quality of the low-pressure reverse osmosis device and thus improve the quality of the final effluent water.

[0014] After the application of this device, all high-salt and high-mineralization mine water in high-altitude areas can be treated to meet the standards and recycled, with a very significant effect on pollutant emission reduction, which can reduce the pollution of surface water bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the high-salinity and high-mineralization mine water treatment device in high-altitude areas according to the present invention;

[0016] Among them: 1. First filter device; 2. Reverse osmosis water inlet pump; 3. Mine water hardness removal device; 4. Low-pressure reverse osmosis device; 5. First water pipeline; 6. Crystallization reactor; 7. Second filter device; 8. Hardness tester; 9. Second water pipeline; 10. First control valve; 11. Second control valve. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0018] See also Figure 1 This embodiment proposes a high-salinity and high-mineralization mine water treatment device in high-altitude areas, including a first filtering device 1, a mine water hardness removal device 3, a low-pressure reverse osmosis device 4, a second filtering device 7 and a crystallization reactor 6; the water outlet of the first filtering device 1 is connected to two reverse osmosis water inlet pumps 2 respectively. In this embodiment, the reverse osmosis water inlet pump 2 is a submersible sewage pump with a flow rate of 200m 3 / h, lift is 20m, power is 7.5kW, two for use and one for backup, main equipment components are made of stainless steel or other corrosion-resistant metals.

[0019] Two reverse osmosis water inlet pumps 2 are respectively connected to a set of mine water de-hardening device 3; the mine water de-hardening device 3 is connected to the low-pressure reverse osmosis device 4 through the first water pipeline 5; the mine water de-hardening device 3 is a subsequent operation of the first filtering device 1, which can further reduce the salts and mineralization in the mine water. At the same time, the mine water de-hardening device 3 serves as a pre-treatment device for the low-pressure reverse osmosis device 4, reducing the processing pressure of the low-pressure reverse osmosis device 4. In this embodiment, two units with a processing capacity of 200m 3 / h mine water hardness removal device 3. Low-pressure reverse osmosis device 4 consists of a dosing device, membrane system, booster pump, chemical cleaning device, control cabinet, valves, pipeline devices and necessary equipment accessories. The operation mode is fully automatic. This embodiment uses 2 sets of processing capacity of 200m 3 The low-pressure reverse osmosis device has an operating pressure of 0.7-1.5 MPa. After the mine water is treated by the low-pressure reverse osmosis device 4, the salt and mineralization content are greatly reduced.

[0020] However, for high-salinity and high-mineralization mine water in high-altitude areas, due to the high salinity and mineralization in the water, even after treatment by the mine water hardness removal device 3, the water quality still cannot meet the water inlet standard of the low-pressure reverse osmosis device 4. In this embodiment, a hardness meter 8 is set in the first water pipeline 5; the first water pipeline 5 is connected to the crystallization reactor 6 through the second water pipeline 9 after the hardness meter 8, and the water outlet of the crystallization reactor 6 is connected to the second filter device 7, and the water outlet of the second filter device 7 is connected to the low-pressure reverse osmosis device 4; the first water pipeline 5 is provided with a first control valve 10, and the second water pipeline 9 is provided with a second control valve 11. The hardness meter 8 is electrically connected to the controller, and the opening and closing of the first control valve 10 and the second control valve 11 are controlled by the controller. A stirring device is provided inside the crystallization reactor 6, and the crystallization reactor 6 is provided with a seed feeding port. The water sample to be treated and seed crystals are added to the crystallization reactor 6, with the seed crystal dosage being 10-15% of the volume of the crystallization reactor 6. The crystallization reactor 6 is connected to an ozone dosing device, which introduces ozone into the crystallization reactor 6. When the hardness meter 8 detects that the water quality in the first water pipeline 5 does not meet the requirements of the low-pressure reverse osmosis device 4, the controller controls the first control valve 10 to close and the second control valve 11 to open, allowing water to enter the crystallization reactor 6 through the second water pipeline 9. Within the crystallization reactor 6, the water sample to be treated is treated by the interaction of the seed crystals and ozone. The hardness of the water sample to be treated is adjusted by controlling the fluidization state of the crystals. The effluent quality is controlled according to the hardness of the water sample to be treated. A hardness detection device is installed at the outlet of the crystallization reactor 6. After the hardness is marked, the water enters the second filtration device 7 for filtration, and then enters the low-pressure reverse osmosis device 4 for treatment.

[0021] The first filter device 1, mine water hardness removal device 3, low-pressure reverse osmosis device 4, second filter device 7 and crystallization reactor 6 used in this embodiment are all existing devices and can be configured according to the water volume and water quality requirements of the treated water.

[0022] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A high-salinity and high-mineralization mine water treatment device in high-altitude areas, characterized by: The invention comprises a first filtering device (1), a mine water hardness removal device (3), a low-pressure reverse osmosis device (4), a second filtering device (7) and a crystallization reactor (6); the water outlet of the first filtering device (1) is connected to the mine water hardness removal device (3); the mine water hardness removal device (3) is connected to the low-pressure reverse osmosis device (4) through a first water supply pipeline (5); a hardness meter (8) is connected to the first water supply pipeline (5); the first water supply pipeline (5) is connected to the crystallization reactor (6) through a second water supply pipeline (9) after the hardness meter (8); the water outlet of the crystallization reactor (6) is connected to the second filtering device (7), and the water outlet of the second filtering device (7) is connected to the low-pressure reverse osmosis device (4); the first water supply pipeline (5) is provided with a first control valve (10), and the second water supply pipeline (9) is provided with a second control valve (11).

2. The high-salinity and high-mineralization mine water treatment device in high-altitude areas according to claim 1 is characterized in that: The water outlet of the first filter device (1) is connected to the mine water hardness removal device (3) via a reverse osmosis water inlet pump (2).

3. The high-salinity and high-mineralization mine water treatment device in high-altitude areas according to claim 1 is characterized in that: The hardness tester (8) is electrically connected to a controller, and the opening and closing of the first control valve (10) and the second control valve (11) are controlled by the controller.

4. The high-salinity and high-mineralization mine water treatment device in high-altitude areas according to claim 1, characterized in that: A stirring device is provided inside the crystallization reactor (6).

5. A high-salinity and high-mineralization mine water treatment device in high-altitude areas according to claim 1 or 4, characterized in that: The crystallization reactor (6) is provided with a seed crystal feeding port.

6. The high-salinity and high-mineralization mine water treatment device in high-altitude areas according to claim 1 is characterized in that: The water outlet of the first filtering device (1) is connected to two mine water hardness removal devices (3); the two mine water hardness removal devices (3) are respectively connected to a low-pressure reverse osmosis device (4) through a first water supply pipeline (5).

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