Water quality purification device for mine drainage water

Abstract

The utility model relates to the technical field of acidic water purification, in particular to a water quality purification device for mine drainage water, which comprises a water accumulation pool, one side of the water accumulation pool is connected with a guide pool, and one side of the guide pool is connected with a buffer pool. According to the utility model, the modularized splicing structure is adopted, so that the modularized splicing structure has remarkable economic and environmental benefits. In economy, the polluted water is subjected to source pretreatment, so that corrosion of strong acid or special pollutants to underground pipelines and large-scale equipment as long as several kilometers is effectively avoided, and the systematic maintenance cost is reduced; and meanwhile, through on-site purification and recycling, the energy consumption and the water delivery cost required by ground well lifting treatment are saved. According to the device, the environmental risk is controlled in a local area, pollutants are prevented from diffusing to pollute an underground water body, the emergency treatment capacity of a mine for coping with emergencies such as water inrush or water quality deterioration is remarkably improved, continuous and stable operation of a drainage system is guaranteed, and an important technical support is provided for green mining and environmental protection compliance of the mine.

Description

TECHNICAL FIELD

[0001] The utility model relates to acid water purification technical field especially relates to a mine dewatering water's water quality purification device. BACKGROUND

[0002] In the process of underground mineral resources exploitation such as coal mine, metal mine, in order to guarantee the operation safety and production efficiency, the underground water level needs to be controlled by dewatering drainage mode, and the mine dewatering water generated thereby becomes the key problem that must be faced by mine production. With the increase of mining depth and the continuous expansion of operation range, the geological conditions become increasingly complex, and in the process of tunneling or stoping, the operation face of part of mine is easy to expose aquifer rich in special pollutants. Among them, the dewatering water rich in strong acid and high concentration of iron and manganese ions is the most typical, which constitutes a severe challenge to normal production of mine.

[0003] The formation of such special water quality is closely related to regional geological structure and mineral composition. For example, in the sulfide-bearing stratum, a large number of hydrogen ions are generated by oxidation reaction of minerals, which leads to significant decrease of pH value of dewatering water, and strong acid water with pH value lower than 4.0 is often formed. In some sedimentary rock or metamorphic rock distribution areas, the iron and manganese oxides, carbonates and other minerals in the aquifer will dissolve in the process of underground water infiltration and circulation, resulting in that the concentration of iron ions in the dewatering water can exceed 10 mg / L, and the concentration of manganese ions is higher than 2 mg / L, which is far beyond the emission limit value requirements of iron and manganese in the Coal Industry Pollutant Discharge Standard. From the corrosion mechanism, the strong acid water environment can destroy the oxidation protection film on the surface of metal, induce and accelerate the electrochemical corrosion process, and the hydrogen ion as the catalyst of corrosion reaction can promote the dissolution of metal ions in the anode area, leading to pitting corrosion, ulcer-like corrosion and other damages of the equipment body. At the same time, high concentration of iron and manganese ions participate in the electrode reaction in the corrosion process, and the generated metal oxide precipitate is easy to adhere to the surface of metal, which on the one hand aggravates the local electrochemical corrosion, and on the other hand may accumulate and block the inner diameter of pipeline, reducing the conveying efficiency. Therefore, if the strong acid or aquifer containing specific high concentration of pollutants is exposed after the operation face in the underground, and the acid water is allowed to flow through the roadway for a long distance, it will seriously corrode the metal equipment, track and pipeline system. In view of this problem, the present application proposes a water quality purification device for mine dewatering water, which aims to realize the source control and on-site treatment of polluted water body, so as to guarantee the safe, stable and environmentally friendly operation of mine system. CONTENT OF UTILITY MODEL

[0004] In order to overcome the problem that when the geological operation face exposes the aquifer rich in strong acid or high concentration of iron, manganese and other specific pollutants in the process of coal mining, the dewatering water generated thereby flows in the roadway for a long distance without treatment, which causes serious corrosion problem. Such acid water will continuously erode the metal equipment, supporting structure, transportation track and drainage pipe in the flowing area, leading to performance degradation of equipment, weakening of structural strength, shortening of service life, and even causing leakage or safety accident.

[0005] The utility model discloses a technical scheme for a mine dewatering water quality purification device, which comprises a sump, a guide pool connected to one side of the sump, a buffer pool connected to one side of the guide pool, a suction assembly arranged on the buffer pool, a reaction assembly connected to the output end of the buffer pool, the suction assembly being used to transport the dewatering water in the buffer pool to the reaction assembly, the reaction assembly being used to add chemical reagents to the dewatering water transported therein for neutralization reaction, and a clarifying pool connected to the output end of the reaction assembly.

[0006] As a preferred, the reaction assembly comprises a base support, the upper end of the base support is provided with an increase support, the increase support is provided with a plurality of, the outer surface of the increase support and the base support is connected with the combination sheet, the adjacent two increase supports and the adjacent increase support and the base support are connected through the combination sheet.

[0007] As a preferred, the reaction assembly further comprises a mounting plate, the mounting plate is connected with the uppermost increase support, the mounting plate is installed with the dosing pump, the output end of the dosing pump is connected with the medicine delivery pipe, the output end of the medicine delivery pipe is provided with the connecting sleeve, the connecting sleeve is rotatably connected with the stirring shaft, the upper end of the stirring shaft is provided with the driving motor, and the output shaft of the driving motor is connected with the stirring shaft.

[0008] As a preferred, the outer surface of the stirring shaft is provided with the fixed sleeve, a plurality of fixed strips are installed on the fixed sleeve, and the fixed strips are connected with stirring blades.

[0009] The upper end of the fixed strip is connected with the medicine collecting and discharging pipe, the fixed pipe is connected with the medicine delivery pipe through the stirring shaft.

[0010] As a preferred, one side of the base support is provided with a first pH monitor, and the first pH monitor is connected with a first pH monitoring head.

[0011] A second pH monitor is arranged on the mounting plate, and the second pH monitor is connected with a second pH monitoring head.

[0012] As a preferred, a communication pipe is connected between the clarifying pool and the uppermost increase support, and an electric control valve is arranged on the communication pipe.

[0013] As a preferred, the suction assembly comprises a lifting pump, the lifting pump is fixedly connected with the buffer pool, the input end of the lifting pump is connected with the inner cavity of the buffer pool through a first connecting pipe, and the output end of the lifting pump is connected with the inner cavity of the base support through a second connecting pipe.

[0014] The utility model discloses the beneficial effect:

[0015] 1. In the utility model, through the modular splicing structure, in economy, through the source pretreatment of high concentration pollution water, effectively avoid the corrosion of strong acid or special pollutants to the underground pipeline and large equipment for several kilometers, thereby greatly reduce the systematic maintenance cost, at the same time, through the on-site purification and reuse, the high energy consumption and long distance water transportation cost required for ground lifting treatment are saved. In safety and environmental protection, the device effectively controls the environmental risk in the local area, prevents the diffusion of pollutants to pollute the groundwater body, and significantly improves the emergency handling capacity of the mine in response to sudden events such as water inrush or water quality deterioration, ensures the continuous and stable operation of the drainage system, and provides important technical support for green mining and environmental protection compliance of the mine. In strategic flexibility, the modular design enables the processing capacity to be flexibly moved and expanded with the mining progress, especially suitable for long-distance excavation working face or deep mining scene, becomes the effective extension and supplement of centralized ground water plant, and finally builds a new distributed efficient water treatment mode of “source control - zoned treatment - on-site reuse”;

[0016] 2. In the utility model, by adopting the special reaction component structure combining flat wall and arc wall, strong asymmetric circulation and three-dimensional turbulent flow can be formed in the stirring process, the “cylindrical rotation zone” and mixing dead angle problem easily formed by traditional central symmetry flow field are effectively avoided, the shear and convection effect of fluid in radial, axial and circumferential directions are significantly enhanced, thereby the mixing efficiency and reaction uniformity are greatly improved.

[0017] 3. In the utility model, by integrating the stirring structure and the dosing structure, the device can add reagents synchronously during stirring, and the fluid centrifugal effect is used to promote the rapid mixing reaction of reagents and water. The integrated design of the device realizes double functions, not only improves the working efficiency of the whole device, but also reduces the equipment area, and reduces the complexity of transportation and installation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The embodiment 1 of the water quality purification device of the utility model is shown as a three-dimensional structure schematic diagram.

[0019] Figure 2 The embodiment 1 of the water quality purification device of the utility model is shown as a three-dimensional structure schematic diagram of the water storage pool.

[0020] Figure 3 The embodiment 1 of the water quality purification device of the utility model is shown as a three-dimensional structure schematic diagram of the mounting plate.

[0021] Figure 4 The embodiment 2 of the water quality purification device of the utility model is shown as a three-dimensional structure schematic diagram of the stirring blade.

[0022] Explanation of reference signs: 101, water accumulation pool; 102, diversion vortex group; 103, guide pool; 104, filter partition; 105, buffer pool; 106, reinforcing plate; 201, lifting pump; 202, first connecting pipe; 203, second connecting pipe; 204, base support; 205, supporting leg; 206, first pH monitor; 207, first pH monitoring head; 208, increasing support; 209, combined sheet; 301, connecting seat; 302, clarification pool; 303, communication pipe; 304, electric control valve; 401, mounting plate; 402, second pH monitor; 403, second pH monitoring head; 501, dosing pump; 502, medicine delivery pipe; 503, connecting sleeve; 504, partition; 505, driving motor; 506, stirring shaft; 507, fixed pipe; 508, medicine collection and discharge; 509, fixing sleeve; 510, fixing strip; 511, stirring blade. DETAILED DESCRIPTION

[0023] The utility model will be further explained in connection with the drawings and examples.

[0024] Example 1

[0025] Reference Figures 1-3 As shown in the structure, a mine dewatering water quality purification device, including water accumulation pool 101, the side of water accumulation pool 101 is connected with guide pool 103, the side of guide pool 103 is connected with buffer pool 105, and buffer pool 105 is provided with suction assembly, and the output end of buffer pool 105 is connected with reaction assembly, and suction assembly is used to transport dewatering water in buffer pool 105 to reaction assembly, and reaction assembly is used to add chemical reagent to the dewatering water transported therein to carry out neutralization reaction, and the output end of reaction assembly is connected with clarification pool 302.

[0026] Among them, diversion vortex group 102 is arranged in water accumulation pool 101, diversion vortex group 102 is composed of axial flow water turbine and support, filter partition 104 is installed in guide pool 103, a plurality of through holes are formed in filter partition 104, filter partition 104 is used to separate large-particle impurities in acidic water, and the side of buffer pool 105 is connected with reinforcing plate 106, and reinforcing plate 106 is connected with the bottom of base support 204;

[0027] When the working face exposes the acid aquifer, the water pool 101 is first introduced at the water inrush point, and then flows through the guide pool 103 and the buffer pool 105 in turn under the action of gravity, avoiding mixing with other neutral water. When the acid water enters the buffer pool 105, the pH of the acid water is detected by the first pH monitor 206 and the first pH monitoring head 207 arranged inside the buffer pool 105. When the pH value is lower than the set threshold value, the suction assembly is started to transport the acid water to the reaction assembly, and the driving motor 505 and the dosing pump 501 are started, and the lime milk is sequentially introduced into the inner cavity of the increasing support 208 through the dosing pump 501, the dosing pipe 502, the stirring shaft 506 and the fixed pipe 507, and then the driving motor 505 is started to drive the stirring shaft 506 to rotate, so as to promote the mixing and neutralization reaction of the acid water and the lime milk. The reaction formula is as follows:

[0028] H2SO4+ Ca(OH)2→ CaSO4↓ + 2H2O

[0029] Through the above reaction formula, the heavy metal ions such as Fe² + , Cu² + , Zn² + dissolved in the acid water generate hydroxide precipitates that are insoluble in water. After neutralization, the supernatant passes through the communication pipe 303 into the clarifier 302, and part of the precipitate settles in the base support 204. The precipitate can be conveniently taken out by disassembling the combined piece 209 on the base support 204. The device adopts a modular splicing structure. Economically, by pretreating high-concentration contaminated water at the source, corrosion of strong acid or special pollutants to underground pipelines and large equipment for several kilometers is effectively avoided, thereby greatly reducing the systematic maintenance cost. At the same time, by purifying and recycling in place, the high energy consumption and long-distance water transportation cost required for ground lifting treatment are saved. In terms of safety and environmental protection, the device effectively controls environmental risks in a local area, prevents the spread of pollutants to contaminate groundwater, and significantly improves the emergency handling capacity of mines in response to sudden events such as water inrush and water quality deterioration, ensuring the continuous and stable operation of the drainage system, and providing important technical support for green mining and environmental protection compliance of mines. In terms of strategic flexibility, the modular design enables the processing capacity to be flexibly moved and expanded with the mining progress, especially suitable for long-distance heading working faces or deep mining scenes, effectively extending and supplementing centralized ground water plants, and ultimately building a new distributed efficient water treatment mode of "source control - zonal treatment - in-situ recycling".

[0030] Further, the reaction assembly comprises a base support 204, an upper end of the base support 204 is provided with an increased support 208, the increased support 208 is provided with a plurality of increased supports 208, the outer surface of the base support 204 is connected with a combination sheet 209, and the adjacent two increased supports 208 and the adjacent increased support 208 and the base support 204 are connected through the combination sheet 209.

[0031] Among them, the uppermost increased support 208 is connected with a connecting seat 301 between the clarifier 302;

[0032] Among them, the bottom of the base support 204 is provided with a plurality of supporting legs 205, the shape, size and thickness of the base support 204 and the increased support 208 are consistent, the base support 204 can be provided as "D" shape in the embodiment, and the base support 204 can also be provided as other shapes, such as semicircular, circular and the like. In the embodiment, through the base support 204 and the increased support 208 in the shape of "D", through the unique combination structure of flat wall and arc wall, strong asymmetric circulation and three-dimensional turbulence can be formed in the stirring process, the "columnar rotation zone" and the mixing dead angle problem easily formed by the traditional central symmetric flow field are effectively avoided, the shear and convection effect of the fluid in the radial direction, axial direction and circumferential direction are significantly enhanced, and the mixing efficiency and reaction uniformity are greatly improved.

[0033] Further, one side of the base support 204 is provided with a first pH monitor 206, and the first pH monitor 206 is connected with a first pH monitoring head 207;

[0034] The mounting plate 401 is provided with a second pH monitor 402, and the second pH monitor 402 is connected with a second pH monitoring head 403.

[0035] Further, the clarifier 302 and the uppermost increased support 208 are connected with a communication pipe 303, and the communication pipe 303 is provided with an electric control valve 304.

[0036] Further, the suction assembly comprises a lifting pump 201, the lifting pump 201 is fixedly connected with the buffer tank 105, the input end of the lifting pump 201 is connected with the inner cavity of the buffer tank 105 through a first connecting pipe 202, and the output end of the lifting pump 201 is connected with the inner cavity of the base support 204 through a second connecting pipe 203.

[0037] Among them, the second connecting pipe 203 is connected with a solenoid valve, and the solenoid valve is electrically connected with the first pH monitor 206, when the first pH monitoring head 207 detects that the pH value of the water body is lower than the threshold value, the solenoid valve is opened.

[0038] Example 2

[0039] On the basis of the above embodiment 1, in order to improve the problem of too large overall land area of the reaction device caused by the independent setting of the stirring device and the dosing device, which is not conducive to the modularization splicing and transportation, referring to the structure shown in Figure 4

[0040] Different from embodiment 1, the reaction assembly further comprises a mounting plate 401 connected with the uppermost additional support 208, a dosing pump 501 is mounted on the mounting plate 401, an output end of the dosing pump 501 is connected with a feeding pipe 502, an output end of the feeding pipe 502 is provided with a connecting sleeve 503, the connecting sleeve 503 is rotatably connected with a stirring shaft 506, an upper end of the stirring shaft 506 is provided with a driving motor 505, an output shaft of the driving motor 505 is connected with the stirring shaft 506.

[0041] Wherein, the driving motor 505 is generally selected to be a stepping motor with a model of 17HS08-1004S, a partition plate 504 is connected with the driving motor 505, the partition plate 504 is fixedly connected with the mounting plate 401, and the output shaft of the driving motor 505 penetrates through the partition plate 504.

[0042] Further, a fixing sleeve 509 is arranged on the outer surface of the stirring shaft 506, a plurality of fixing strips 510 are mounted on the fixing sleeve 509, and stirring blades 511 are connected with the fixing strips 510.

[0043] An upper end of the fixing strip 510 is connected with a medicine collecting row 508, a fixing pipe 507 is arranged on the medicine collecting row 508, and the fixing pipe 507 is communicated with the feeding pipe 502 through the stirring shaft 506.

[0044] Wherein, a plurality of through holes are arranged on the medicine collecting row 508, and the medicine collecting row 508 is communicated with the inner cavity of the additional support 208 through the through holes.

[0045] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range of the person skilled in the art without departing from the purpose of the utility model.​

Claims

1. A water quality purification device for mine dewatering water, characterized by: Including the water pool (101), one side of the water pool (101) is connected with the guide pool (103), one side of the guide pool (103) is connected with the buffer pool (105), the buffer pool (105) is provided with a suction assembly, the output end of the buffer pool (105) is connected with a reaction assembly, the suction assembly is used for conveying the dry water in the buffer pool (105) to the reaction assembly, and the output end of the reaction assembly is connected with the clarification tank (302).

2. The water purification device for mine dewatering according to claim 1, characterized in that: The reaction assembly comprises a base support (204), the upper end of the base support (204) is provided with an increase support (208), a plurality of increase supports (208) are arranged, the outer surfaces of the increase supports (208) and the base support (204) are connected with combination sheets (209), and adjacent two increase supports (208) and the base support (204) are connected through the combination sheets (209).

3. The water purification device for mine dewatering according to claim 2, characterized in that: The reaction assembly further comprises a mounting plate (401), the mounting plate (401) is connected with the uppermost increase support (208), a dosing pump (501) is installed on the mounting plate (401), the output end of the dosing pump (501) is connected with a medicine feeding pipe (502), the output end of the medicine feeding pipe (502) is provided with a connecting sleeve (503), the connecting sleeve (503) is rotatably connected with a stirring shaft (506), the upper end of the stirring shaft (506) is provided with a driving motor (505), and the output shaft of the driving motor (505) is connected with the stirring shaft (506).

4. The water purification device for mine dewatering according to claim 3, characterized in that: The outer surface of the stirring shaft (506) is provided with a fixing sleeve (509), a plurality of fixing strips (510) are installed on the fixing sleeve (509), and stirring blades (511) are connected to the fixing strips (510); The upper end of the fixing strip (510) is connected with a medicine collecting row (508), the medicine collecting row (508) is provided with a fixing pipe (507), and the fixing pipe (507) is communicated with the medicine feeding pipe (502) through the stirring shaft (506).

5. The water purification device for mine dewatering according to claim 3, characterized in that: One side of the base support (204) is provided with a first pH monitor (206), and the first pH monitor (206) is connected with a first pH monitoring head (207); The mounting plate (401) is provided with a second pH monitor (402), and the second pH monitor (402) is connected with a second pH monitoring head (403).

6. The water purification device for mine dewatering according to claim 2, characterized in that: The clarification tank (302) and the uppermost increase support (208) are connected with a communication pipe (303), and the communication pipe (303) is provided with an electric control valve (304).

7. The water purification device for mine dewatering according to claim 1, characterized in that: The suction assembly comprises a lifting pump (201), the lifting pump (201) is fixedly connected with the buffer pool (105), the input end of the lifting pump (201) is communicated with the inner cavity of the buffer pool (105) through a first connecting pipe (202), and the output end of the lifting pump (201) is communicated with the inner cavity of the base support (204) through a second connecting pipe (203).

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