Water pollution treatment device and water pollution treatment system for coal mine water supply pump station

Abstract

The invention discloses a water pollution treatment device and a water pollution treatment system for a coal mine water supply pump station, and belongs to the field of manufacturing of special equipment for environmental protection. The preheating unit is arranged to heat mine water to the preset temperature; the preparation method comprises the following steps: dispersing and dissolving flocculant powder in water which is heated to a preset temperature by arranging a batching unit to prepare a solution; the mine water heated to the preset temperature and the solution prepared from the flocculating agent are fully stirred and reacted in the mixed reaction unit, so that impurity particles in the mine water are destabilized and gathered, and flocculating constituents with large diameters are formed; and then discharging into a sedimentation tank for sedimentation, thereby achieving the purpose of removing suspended matters and turbidity in the mine water. The system can solve the problems that the effect of a flocculating agent is weakened and the dosage is increased due to the fact that the temperature of mine water is low.

Description

Technical Field

[0001] The invention relates to the field of manufacturing special equipment for environmental protection, and in particular to a water pollution treatment device and a water pollution treatment system for a coal mine water supply pump station. Background Art

[0002] A large amount of mine water is produced during the coal mining process. Mine water pollution can be divided into mineral pollution, organic pollution and bacterial pollution. Mineral pollution includes sand, mud particles, mineral impurities, dust, dissolved salts, acids and alkalis, etc.; organic pollution includes coal particles, grease, biological life metabolites, wood and other oxidative decomposition products of other substances. In addition, due to the pollution of powdered ore, coal powder, rock powder and associated minerals scattered during mining and transportation, the mine water is gray-black, turbid, with oil film floating on the water surface, and emits a small amount of fishy and oily smell.

[0003] In addition, mine water has the characteristics of high suspension, and the suspended matter has the characteristics of small particle size, light specific gravity, and slow sedimentation speed. Some of the fine colloids formed cannot settle naturally. In actual engineering, it is usually necessary to add flocculants to mine water to destabilize and aggregate the impurity particles in the water to form floccules with larger diameters, and then precipitate them in the sedimentation tank to achieve the purpose of removing suspended matter and turbidity in the water. The effect of flocculants is greatly affected by temperature. The flocculation effect will increase with the increase of water temperature. Under low temperature conditions, the amount of flocculant must be increased; according to experience, the reaction temperature of the flocculant is generally controlled at 20-30°C. In the prior art, in the cold winter, the temperature of mine water is low, the effect of flocculants is greatly reduced, and the amount used increases. Therefore, it is necessary to further improve the relevant water pollution treatment equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a water pollution treatment device and a water pollution treatment system for a coal mine water supply pump station, which at least solves the problem that the flocculant effect is weakened and the dosage is increased due to the low temperature of mine water.

[0005] The technical solution adopted by the present invention is as follows:

[0006] In the first aspect, the present invention provides a water pollution treatment device for a coal mine water supply pump station, comprising a preheating unit, a batching unit, a mixing reaction unit, and a sedimentation tank; the preheating unit is used to heat mine water to a first preset temperature; the batching unit is used to disperse and dissolve flocculant powder in water heated to a second preset temperature to form a solution; the mine water heated to the first preset temperature and the flocculant solution configured to the second preset temperature are input into the mixing reaction unit for stirring and reaction; and then discharged into the sedimentation tank for precipitation.

[0007] In a second aspect, the present invention provides a water pollution treatment system, which uses the coal mine water supply pump station water pollution treatment device as described above to perform the following treatment on mine water: input the mine water into a preheating unit to heat it to a first preset temperature; input the flocculant powder into a batching unit to disperse and dissolve it in water heated to a second preset temperature to form a solution; input the mine water heated to the first preset temperature and the flocculant solution configured to the second preset temperature into a mixing reaction unit for stirring and reaction; and then discharge it into a sedimentation tank for sedimentation.

[0008] The beneficial effects of the present invention are as follows: the present invention provides a water pollution treatment device and a water pollution treatment system for a coal mine water supply pump station. The present invention heats the mine water to a preset temperature by arranging a preheating unit; disperses and dissolves the flocculant powder in the water heated to the preset temperature to form a solution by arranging a batching unit; the mine water heated to the preset temperature and the solution configured with the flocculant are fully stirred and reacted in a mixing reaction unit, so that the impurity particles in the mine water are destabilized and aggregated to form floccules with larger diameters; and then the water is discharged into a sedimentation tank for sedimentation, thereby achieving the purpose of removing suspended matter and turbidity in the mine water; the system can solve the problem that the flocculant effect is weakened and the dosage is increased due to the low temperature of the mine water. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Shown is a structural block diagram of the water pollution treatment device of the present invention.

[0010] Figure 2 Shown is a three-dimensional structural display diagram of a water pollution treatment device of the present invention.

[0011] Figure 3 Shown is a detailed structural diagram of the second frame of the present invention.

[0012] Figure 4 Shown is a diagram showing the connection structure of the first screw conveyor of the present invention.

[0013] Figure 5 The figure shows the internal structure of a preheating tank of the present invention after partial cutaway.

[0014] Figure 6 Shown in the figure is a structural display diagram of the batching unit of the present invention.

[0015] Figure 7 Shown is a cross-sectional view of the improved dispersion and dissolution tank of the present invention.

[0016] Figure 8 Shown is a diagram showing the internal structure of a hot water chamber of the present invention.

[0017] Fig. 9 Shown is a diagram showing the top structure of the central tube of the present invention.

[0018] Fig.10 Shown is a diagram showing the internal structure of the powder conveying pipe of the present invention.

[0019] Fig.11 Shown is a diagram showing the connection structure of the guide tube of the present invention.

[0020] Fig.12 Shown is a structural diagram of the inner wall cleaning mechanism of the present invention.

[0021] Fig.13 Shown is a schematic diagram of the initial position of the high-pressure nozzle of the present invention.

[0022] Fig.14 The figure shows the structure of the middle chamber and the lower chamber in the dispersing and dissolving tank of the present invention. Figure 1 .

[0023] Fig.15 The figure shows the structure of the middle chamber and the lower chamber in the dispersing and dissolving tank of the present invention. Figure 2 .

[0024] Fig.16 Shown is a diagram showing the internal structure of the premixing device of the present invention.

[0025] Fig.17 Shown is a structural display diagram of a sedimentation tank provided by the present invention.

[0026] Explanation of reference numerals: preheating unit 1, preheating tank 1.1, first discharge valve 1.2, first screw conveyor 1.3, first liquid inlet pipe 1.4, first infusion pump 1.5, first liquid discharge pipe 1.6, first liquid discharge valve 1.7; first stirring spindle 1.8, first drive motor 1.9, first connecting rod 1.10, first spiral blade 1.11, first fender 1.12, first stirring blade 1.13, first liquid infusion pipe 1.14, second liquid infusion pump 1.15; batching unit 2, storage hopper 2.1, screw feeder 2.2, dispersion and dissolution tank 2.3, upper chamber 2.4, middle chamber 2.5, lower chamber 2.6, center pipe 2 .7, annular partition 2.8, hot water chamber 2.9, cold water chamber 2.10, water hole 2.11, cold water inlet 2.12, water supply pipeline 2.13, diverter plate 2.14, electric heating pipe 2.15, heat conducting fin 2.16, spray plate 2.17, spray accommodating chamber 2.18, water pumping pipe 2.19, submersible pump 2.20, powder conveying pipe 2.21, first connecting pipe 2.22, guide pipe 2.23, annular air spray pipe 2.24, third discharge valve 2.25, third screw conveyor 2.26, powder dispersion drive motor 2.27, rotating shaft 2.28, fan blade 2.29, scattering blade 2.30, guide Cover 2.31; first telescopic rod 2.32, high-pressure nozzle 2.33, water storage box 2.34, water extraction branch pipe 2.35, solenoid valve 2.36, elastic water delivery pipe 2.37; driving gear 2.38, driven gear plate 2.39, reduction motor 2.40, track groove 2.41, connecting column 2.42, stirring support frame 2.43, second stirring blade 2.44, first support rod 2.45, central axis 2.46, dispersion head 2.47, second support rod 2.48, second spiral blade 2.49, third support rod 2.50, third stirring blade 2.51; mixed reaction unit 3, mixed reaction tank 3.1, second discharge valve 3 .2, a second screw conveyor 3.3, a second drain pipe 3.4, a second drain valve 3.5; a sedimentation tank 4, a silt tank 4.1, a flocculation sedimentation tank 4.2, a flocculation supernatant storage tank 4.3, a flocculation supernatant filtration tank 4.4; a premixing device 5, a premixing shell 5.1, a uniform distribution plate 5.2, a first chamber 5.3, a second chamber 5.4, a third chamber 5.5, a fourth chamber 5.6, a first impeller 5.7; a first frame 6, a first working platform 6.1, a second working platform 6.2, a first staircase 6.3, a second staircase 6.4; a second frame 7, a guide box 8, a cylinder support plate 9, a first top plate 10, and a heat preservation space 11. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In order to solve the problem that the flocculant effect is weakened and the amount of flocculant used is increased due to the low temperature of mine water. The embodiment of the present invention first provides a water pollution treatment device for a coal mine water supply pump station. Figure 1The figure shows a structural block diagram of the water pollution treatment device of the present invention. The water pollution treatment device of the present invention mainly includes a preheating unit 1, a batching unit 2, a mixing reaction unit 3, and a sedimentation tank 4. Among them, the preheating unit 1 is used to heat the mine water to a preset temperature, for example, heated to 20-30°C. The batching unit 2 is used to disperse and dissolve the flocculant powder in the water heated to the preset temperature to prepare a solution, for example, heating the water to 20-30°C to disperse and dissolve the flocculant powder; the mine water heated to the preset temperature and the flocculant-prepared solution are fully stirred and reacted in the mixing reaction unit 3, so that the impurity particles in the mine water are destabilized and aggregated to form floccules with larger diameters; then, they are discharged into the sedimentation tank 4 for precipitation, thereby achieving the purpose of removing suspended matter and turbidity in the mine water.

[0032] See also Figure 2 The figure shows a three-dimensional structure display diagram of a water pollution treatment device of the present invention. In a specific embodiment of the present invention, the water pollution treatment device also includes a first frame 6, the first frame 6 adopts a steel frame structure, and the first frame 6 includes adjacent first working platforms 6.1 and second working platforms 6.2, wherein the first working platform 6.1 is arranged in front of the second working platform 6.2, and the height of the first working platform 6.1 is lower than that of the second working platform 6.2. A first staircase 6.3 is arranged at the front edge of the first working platform 6.1, and the first working platform 6.1 can be reached from the ground through the first staircase 6.3; a second staircase 6.4 is arranged between the first working platform 6.1 and the second working platform 6.2, and the second working platform 6.2 can be reached from the first working platform 6.1 through the second staircase 6.4.

[0033] In a specific embodiment of the present invention, a preheating unit 1 and a mixing reaction unit 3 are arranged on the second frame 7 below the first working platform 6.1, a batching unit 2 is arranged on the second working platform 6.2, and a sedimentation tank 4 is arranged underground below the first frame 6. This three-dimensional layout can greatly reduce the floor space.

[0034] See also Figure 3 The figure shows the detailed structure of the second frame 7 of the present invention. In a specific embodiment of the present invention, the second frame 7 includes two symmetrically arranged rectangular guide boxes 8, and the guide boxes 8 are covered with thermal insulation boards; a cylinder support plate 9 is horizontally arranged between the two guide boxes 8, and a first top plate 10 is arranged on the top of the two guide boxes 8; a thermal insulation space 11 is formed between the two guide boxes 8, the cylinder support plate 9 and the first top plate 10, and the front and rear of the thermal insulation space 11 are surrounded by thermal insulation boards to form a closed space; Figure 3 The front insulation board has been removed.

[0035] like Figure 3 As shown in FIG. 1 , in one specific embodiment of the present invention, the preheating unit 1 includes a preheating tank 1.1, a first screw conveyor 1.3, Figure 3 In the embodiment shown, the preheating tank 1.1 is arranged on the right side inside the heat preservation space 11; the preheating tank 1.1 is composed of an upper cylindrical body and a lower conical bucket; a top cover is arranged on the top of the cylindrical body, and the bottom outlet of the conical bucket is connected to the first discharge valve 1.2, which can be a star-shaped discharge valve; the bottom outlet of the first discharge valve 1.2 is connected to the feed port of the first screw conveyor 1.3, and the discharge port of the first screw conveyor 1.3 is connected to the underground sedimentation tank 4. Figure 4 The figure shows the connection structure of the first screw conveyor 1.3 of the present invention. Figure 3 As shown in the figure, the top of the side of the preheating tank 1.1 is connected to the first infusion pump 1.5 through the first liquid inlet pipe 1.4, and the first infusion pump 1.5 pumps the mine water into the preheating tank 1.1; the bottom of the side of the preheating tank 1.1 is connected to the guide box 8 on the right side through the first discharge pipe 1.6; the first discharge valve 1.7 is arranged on the first discharge pipe 1.6.

[0036] The preheating tank 1.1 uses an electric heating tank or a fluid heat exchange heating tank. The heat exchange fluid used in the fluid heat exchange heating tank can be flowing hot water or high-temperature steam. This application does not impose any restrictions on this and can be selected according to the actual situation of the enterprise.

[0037] like Figure 5 The figure shows a partial cutaway diagram of the internal structure of a preheating tank 1.1 of the present invention. In a specific embodiment of the present invention, a preheating stirring mechanism is provided in the preheating tank 1.1, and the preheating stirring mechanism accelerates heat transfer by stirring the mine water, so that the mine water is heated to a preset temperature more quickly. The preheating stirring mechanism shown in the figure includes a first stirring spindle 1.8, the top end of the first stirring spindle 1.8 passes through the top cover of the preheating tank 1.1 and is connected to a first drive motor 1.9; the first stirring spindle 1.8 is connected to a first spiral blade 1.11 through a plurality of first connecting rods 1.10, and the first spiral blade 1.11 is arranged around the first stirring spindle 1.8. The first spiral blade 1.11 can drive the mine water in the preheating tank 1.1 to flow longitudinally.

[0038] Furthermore, since the mine water entering the preheating tank 1.1 contains sand and gravel particles, the sand and gravel particles settled at the bottom of the preheating tank 1.1 will scrape the inner wall of the preheating tank 1.1 during the stirring process, causing wear of the inner wall of the preheating tank 1.1. Therefore, in a specific embodiment of the present invention, a first fender 1.12 is further provided in the conical bucket at the bottom of the preheating tank 1.1. Figure 5 As shown in the figure, the first fender 1.12 can be conical, with a through hole in the middle of the first fender 1.12, and a storage chamber is formed between the first fender 1.12 and the conical bucket at the bottom of the preheating tank 1.1; after sand and gravel and other particles enter the storage chamber, they are blocked by the first fender 1.12, and the disturbance caused by the preheating stirring mechanism is weakened, which can reduce the degree of wear of the inner wall of the preheating tank 1.1 by sand and gravel and other particles.

[0039] Further, such as Figure 5 As shown in , a first stirring blade 1.13 may be further provided at the bottom of the first stirring main shaft 1.8, and the first stirring blade 1.13 is connected to the first stirring main shaft 1.8 through a first connecting rod 1.10. Figure 5 The first stirring blade 1.13 shown in the figure is in the shape of a long strip, and the lower edge of the first stirring blade 1.13 contacts the upper surface of the first fender 1.12. The first stirring blade 1.13 in the present invention has two functions: first, the first stirring blade 1.13 stirs the mine water from the bottom during the rotation of the first stirring main shaft 1.8, drives the mine water to flow along the circumferential direction, and accelerates the heat exchange; second, the first stirring blade 1.13 is used to scrape the material attached to the upper surface of the first fender 1.12 to avoid the deposition of too thick adhesive.

[0040] like Figure 3 As shown in , after the mine water is heated to a preset temperature by the preheating tank 1.1, the preheating stirring mechanism is stopped and the water is allowed to stand for a pre-trial time, for example, for 2-10 minutes; then the first discharge valve 1.7 on the first discharge pipe 1.6 on the right side of the preheating tank 1.1 is opened, and the heated mine water in the preheating tank 1.1 enters the diversion box 8 on the right side. A filter plate may be provided in the diversion box 8, and preliminary filtration may be achieved when the heated mine water passes through the filter plate during its falling process, thereby reducing the amount of subsequent flocculant used. The sediment stored in the storage chamber at the bottom of the preheating tank 1.1 is sent to the sedimentation tank 4 through the first discharge valve 1.2 and the first screw conveyor 1.3. As shown Figure 3 As shown in the figure, a drain port is arranged at the bottom of the flow guide box 8, and the drain port is connected to the mixing reaction unit 3 through the first infusion pipe 1.14. A second infusion pump 1.15 is arranged on the first infusion pipe 1.14. The heated mine water in the flow guide box 8 is pumped into the mixing reaction unit 3 through the second infusion pump 1.15.

[0041] like Figure 3 , Figure 4 As shown in , in one specific embodiment of the present invention, the mixing reaction unit 3 includes a mixing reaction tank 3.1, a second discharge valve 3.2, a second screw conveyor 3.3, and a mixing and stirring mechanism; Figure 3In the illustrated embodiment, the mixing reaction tank 3.1 is arranged on the left side inside the heat preservation space 11; the structure of the mixing reaction tank 3.1 is the same as that of the preheating tank 1.1, and is composed of an upper cylindrical body and a lower conical bucket; a top cover is arranged on the top of the cylindrical body; the bottom outlet of the mixing reaction tank 3.1 is connected to the second discharge valve 3.2; the bottom outlet of the second discharge valve 3.2 is connected to the feed port of the second screw conveyor 3.3, and the discharge port of the second screw conveyor 3.3 is connected to the underground sedimentation tank 4. The bottom of the side of the mixing reaction tank 3.1 is connected to the left guide box 8 through the second drainage pipe 3.4; the second drainage pipe 3.4 is provided with a second drainage valve 3.5. The top of the side of the mixing reaction tank 3.1 is provided with a liquid inlet. The first fender 1.12 can also be arranged in the conical bucket at the bottom of the mixing reaction tank 3.1 for storing sediment. In addition, a mixing and stirring mechanism is arranged inside the mixing reaction tank 3.1, and the structure of the mixing and stirring mechanism can be the same as that of the preheating stirring mechanism, including a spiral blade and a stirring blade structure design. The mixing reaction tank 3.1 adopts an electric heating tank or a fluid heat exchange heating tank.

[0042] like Figure 6 The structure of the batching unit 2 of the present invention is shown in the figure. In a specific embodiment of the present invention, the batching unit 2 includes a storage hopper 2.1, a screw feeder 2.2, a dispersion and dissolution tank 2.3, a third discharge valve 2.25, and a third screw conveyor 2.26; wherein the storage hopper 2.1 is installed on the second working platform 6.2 through a frame, and the storage hopper 2.1 is used to store flocculant powder; in a specific embodiment, the storage hopper 2.1 is a quadrangular pyramid with a large top and a small bottom, and a top cover is provided on the top of the storage hopper 2.1; the screw feeder 2.2 is arranged obliquely, and the feed port of the screw feeder 2.2 is located in the storage hopper 2.1, and the discharge port of the screw feeder 2.2 is connected to the feed port of the dispersion and dissolution tank 2.3. A water inlet is arranged on the upper part of the dispersion and dissolution tank 2.3, and the water inlet is connected to the water supply equipment through the water supply pipe 2.13. A third discharge valve 2.25 is provided at the bottom discharge port of the dispersion and dissolution tank 2.3, and the bottom discharge port of the third discharge valve 2.25 is connected to the feed port of the third screw conveyor 2.26, and the discharge port of the third screw conveyor 2.26 is connected to the mixing reaction tank 3.1. A spreading and stirring mechanism is provided inside the dispersion and dissolution tank 2.3; the flocculant powder is stirred, dispersed and dissolved into a solution in the dispersion and dissolution tank 2.3, and then sent to the mixing reaction tank 3.1 through the third screw conveyor 2.26; the flocculant solution and the heated mine water are fully stirred and reacted in the mixing reaction tank 3.1 for a preset time; then, they are allowed to stand and settle for a preset time, for example, for 5-10 minutes; then, the second discharge valve 3.5 on the second discharge pipe 3.4 on the left side of the mixing reaction tank 3.1 is opened, and the supernatant after the reaction in the mixing reaction tank 3.1 enters the guide box 8 on the left side. A filter plate can be provided in the left guide box 8, and the supernatant after the reaction can be filtered when it passes through the filter plate during the falling process. Figure 3As shown in the figure, a drain port is arranged at the bottom of the left guide box 8, and the drain port is connected to the sedimentation tank 4 through a pipe. The supernatant contains the flocculant that has not reacted fully. In a preferred embodiment of the present invention, the supernatant is heated to a preset temperature, for example, 20-30°C, and then returned to the mixing reaction tank 3.1 for reaction.

[0043] Furthermore, the flocculant powder is prone to agglomeration during the mixing process with water, and large agglomerates of powder float on the liquid surface of the dispersion and dissolution tank 2.3, making the prepared flocculant solution uneven and the reaction effect poor. Therefore, the present invention provides an improved dispersion and dissolution tank 2.3 solution.

[0044] like Figure 7 The figure shows a cross-sectional view of the improved dispersion and dissolution tank 2.3 of the present invention. The dispersion and dissolution tank 2.3 is cylindrical in shape as a whole, and has a conical hopper at the bottom. The interior of the dispersion and dissolution tank 2.3 is divided from top to bottom into an upper chamber 2.4, an intermediate chamber 2.5, and a lower chamber 2.6 by a partition; a central tube 2.7 is arranged in the center of the dispersion and dissolution tank 2.3, and the top of the central tube 2.7 protrudes from the top cover of the dispersion and dissolution tank 2.3; the central tube 2.7 passes through the upper chamber 2.4 and the intermediate chamber 2.5, and the bottom opening of the central tube 2.7 is located in the lower chamber 2.6; an annular partition 2.8 is arranged around the central tube 2.7 in the upper chamber 2.4, and the annular partition 2.8 is arranged. The upper chamber 2.4 is further divided into a hot water chamber 2.9 surrounding the central tube 2.7 and a cold water chamber 2.10 surrounding the hot water chamber 2.9. A water hole 2.11 is provided at the bottom of the annular partition 2.8, and the water hole 2.11 connects the hot water chamber 2.9 and the cold water chamber 2.10. The upper chamber 2.4 is provided with a cold water inlet 2.12, and the cold water inlet 2.12 is connected to a water supply device through a water supply pipe 2.13. In this embodiment, the water supply device provides unheated water at room temperature.

[0045] like Figure 7 As shown in FIG. 1 , the water provided by the water supply device first enters the outermost cold water chamber 2.10, and then enters the hot water chamber 2.9 through the water hole 2.11 at the bottom of the annular partition 2.8; the hot water chamber 2.9 is divided into multiple chambers distributed up and down by multiple annular diverter plates 2.14. Figure 8 Shown is a diagram showing the internal structure of a hot water chamber 2.9 of the present invention. Figure 8 In the embodiment shown, three annular diverter plates 2.14 are horizontally arranged in the hot water chamber 2.9, and a number of water holes are evenly distributed on each diverter plate 2.14; an annular electric heating pipe 2.15 is suspended in the annular space between adjacent diverter plates 2.14, and heat-conducting fins 2.16 are arranged on the electric heating pipe 2.15. Cold water flows from bottom to top in the hot water chamber 2.9 and is evenly dispersed through the diverter plates 2.14. The electric heating pipe 2.15 can quickly heat the cold water to a preset temperature; water is taken from above the top diverter plate 2.14 for dissolving the flocculant.

[0046] like Fig. 9 The top structure of the central tube 2.7 of the present invention is shown in the figure. The top of the central tube 2.7 protrudes from the top cover of the dispersion and dissolution tank 2.3; the top of the central tube 2.7 is separated into a spray receiving chamber 2.18 by a spray plate 2.17, and the spray plate 2.17 is covered with water holes 2.11; the spray receiving chamber 2.18 is provided with a water inlet, and the water inlet is connected to the submersible pump 2.20 through a pumping pipe 2.19; Figure 8 As shown in FIG. 2 , the submersible pump 2.20 is arranged in the space above the uppermost diverter plate 2.14 of the hot water chamber 2.9, and extracts water heated to the preheating temperature from the space. The spray receiving chamber 2.18 sprays hot water downward through the spray plate 2.17.

[0047] like Fig. 9 As shown in the figure, an inclined cylindrical powder delivery pipe 2.21 is provided on the side wall of the central tube 2.7, and the side of the powder delivery pipe 2.21 connected to the central tube 2.7 is the lower end; the powder delivery pipe 2.21 is connected to the discharge port of the screw feeder 2.2 through the first connecting pipe 2.22 extending upward. The flocculant powder is directly fed into the central tube 2.7 through the screw feeder 2.2, and the dispersion effect is poor; for this reason, in an optional embodiment of the present invention, a powder dispersion mechanism is added in the powder delivery pipe 2.21. Fig. 9 As shown in the figure, a powder dispersion driving motor 2.27 is arranged at the outer end of the powder conveying pipe 2.21, and a rotating shaft 2.28 is arranged at the axis of the powder conveying pipe 2.21. The rotating shaft 2.28 is connected to the powder dispersion driving motor 2.27 and driven to rotate by the powder dispersion driving motor 2.27; a fan blade 2.29 is arranged on the rotating shaft 2.28, close to the side of the powder dispersion driving motor 2.27, and the fan blade 2.29 is located on the right side of the bottom outlet of the first connecting pipe 2.22.

[0048] The flocculant powder discharged from the outlet of the screw feeder 2.2 falls into the powder conveying pipe 2.21 through the first connecting pipe 2.22, and the powder dispersion driving motor 2.27 drives the fan blades 2.29 to rotate to generate high-speed wind flow, blowing the falling flocculant powder into the central pipe 2.7; at the same time, the central pipe 2.7 sprays hot water from top to bottom, and the hot water is mixed with the continuously sprayed powder and falls into the lower chamber 2.6 below for stirring and mixing. This pre-mixing method can prevent the powder from agglomerating into a large mass to a great extent.

[0049] like Fig.10 The figure shows the internal structure of the powder conveying pipe 2.21 of the present invention. In an optional improvement of the present invention, a scattering blade 2.30 is provided on the rotating shaft 2.28; Fig.10In the embodiment shown, the scattering blades 2.30 are long strips, and three blades are arranged in an array along the rotating shaft 2.28. The scattering blades 2.30 are located below the bottom outlet of the first connecting pipe 2.22. The scattering blades 2.30 break up the large clumps of falling powder, which is conducive to the right wind blowing the powder away.

[0050] like Fig.10 As shown in the figure, a conical air guide hood 2.31 can be further provided on the left side of the fan blade 2.29, and the air guide hood 2.31 is arranged coaxially with the rotating shaft 2.28; the tip of the air guide hood 2.31 faces the side of the fan blade 2.29, and the flared side of the air guide hood 2.31 faces the scattering blade 2.30; the tip of the air guide hood 2.31 is fixed to the inside of the powder conveying pipe 2.21 through a bracket; a spiral ventilation gap is provided on the air guide hood 2.31, and the direct current wind generated by the rotation of the fan blade 2.29 is converted into swirling wind after being guided by the air guide hood 2.31, and the swirling wind reduces the adhesion of powder to the inner wall of the powder conveying pipe 2.21.

[0051] There is also a situation where powder is attached to the inner wall of the first connecting pipe 2.22. In an optional embodiment of the present invention, a part of the wind generated in the powder conveying pipe 2.21 is guided into the first connecting pipe 2.22 through the guide pipe 2.23, and the inner wall of the first connecting pipe 2.22 is sprayed from top to bottom. Fig.11 The figure shows the connection structure of the guide pipe 2.23 of the present invention. One end of the guide pipe 2.23 is connected to the powder conveying pipe 2.21, and the connection port is in a bell-shaped shape, and the connection port is located between the guide cover 2.31 and the fan blade 2.29. The other end of the guide pipe 2.23 is connected to the annular air jet pipe 2.24 set on the top of the first connecting pipe 2.22, and the annular air jet pipe 2.24 is set along the top edge of the first connecting pipe 2.22. Fig.11 As shown in FIG. 1 , the annular air jet pipe 2.24 is provided with an annular air jet gap facing the inner wall inside the first connecting pipe 2.22 (the direction indicated by the arrow indicates the air jet direction).

[0052] By setting up a powder dispersing mechanism, the degree of mixing of flocculant powder and water can be greatly improved, and the speed of configuring qualified flocculants can be accelerated; at the same time, the device can improve the utilization rate of flocculant powder and reduce loss.

[0053] Furthermore, flocculants may also adhere to the inner wall of the central tube 2.7 during the preparation of the flocculant solution; therefore, in an optional improvement of the present invention, a lifting inner wall cleaning mechanism is provided in the central tube 2.7. Fig.12The figure shows the structure of the inner wall cleaning mechanism of the present invention. The inner wall cleaning mechanism includes a first telescopic rod 2.32 and a high-pressure spray head 2.33; the first telescopic rod 2.32 can be a multi-stage telescopic rod, and the embodiment shown in the figure uses a two-stage telescopic rod; the first telescopic rod 2.32 extends from the center of the top of the central tube 2.7 into the interior of the central tube 2.7, and the first telescopic rod 2.32 passes through the spray accommodating cavity 2.18 and the spray plate 2.17; an annular water storage box 2.34 is arranged in the center of the lower surface of the spray plate 2.17 and around the first telescopic rod 2.32; the water storage box 2.34 is connected to the water pumping pipe 2.19 through a water pipe; as shown in FIG. Fig.12 As shown in the figure, the water extraction pipe 2.19 is divided into two water extraction branches 2.35, which are connected to the spray accommodating chamber 2.18 and the water storage box 2.34 respectively; a solenoid valve 2.36 is set on each of the two water extraction branches 2.35; a truncated cone-shaped high-pressure nozzle 2.33 is installed at the bottom end of the piston rod of the first telescopic rod 2.32, and the high-pressure nozzle 2.33 is covered with spray holes facing the inner wall of the central tube 2.7; a connector is set on the upper surface of the high-pressure nozzle 2.33, and the connector is connected to the water storage box 2.34 through an elastic water pipe 2.37 spirally wrapped around the first telescopic rod 2.32; the elastic water pipe 2.37 is elastic and can be elastically contracted under the spray plate 2.17. Fig.13 Shown is a schematic diagram of the initial position of the high pressure nozzle 2.33 of the present invention.

[0054] like Fig.13 As shown in the figure, during the batching process, the high-pressure nozzle 2.33 is parked below the spray plate 2.17 and above the outlet of the powder delivery pipe 2.21. During batching, the two solenoid valves 2.36 are opened at the same time to spray the injected flocculant powder; after the batching is completed, only the solenoid valve 2.36 on the water extraction branch pipe 2.35 controlling the high-pressure nozzle 2.33 is opened, and the first telescopic rod 2.32 controls the high-pressure nozzle 2.33 to move up and down in the central tube 2.7 to spray and clean the inner wall of the central tube 2.7, and the cleaned liquid falls into the lower chamber 2.6 below.

[0055] like Fig.14 The figure shows the structure of the middle chamber 2.5 and the lower chamber 2.6 in the dispersion and dissolution tank 2.3 of the present invention. Figure 1 . Fig.15 The structure of the middle chamber 2.5 and the lower chamber 2.6 in the dispersing and dissolving tank 2.3 of the present invention is shown. Figure 2. A stirring drive mechanism is arranged in the middle chamber 2.5 of the dispersion and dissolution tank 2.3, and a spreading and stirring mechanism is arranged in the lower chamber 2.6. In the embodiment shown in the figure, the stirring drive mechanism adopts a gear transmission mechanism, including a driving gear 2.38 and a driven gear plate 2.39, and the driven gear plate 2.39 is rotatably arranged around the central tube 2.7; the driving gear 2.38 is arranged on the outside of the dispersion and dissolution tank 2.3, and the driving gear 2.38 is connected to the reduction motor 2.40 on the outside of the dispersion and dissolution tank 2.3, and the driving gear 2.38 is meshed with the driven gear plate 2.39; the reduction motor 2.40 drives the driven gear plate 2.39 to rotate.

[0056] like Fig.15 As shown in the figure, a circular track groove 2.41 is provided on the partition between the middle chamber 2.5 and the lower chamber 2.6, and a plurality of connecting posts 2.42 are provided on the driven gear plate 2.39. In the embodiment shown in the figure, three connecting posts 2.42 are provided in a circular array on the driven gear plate 2.39, and the three connecting posts 2.42 pass through the track groove 2.41 and extend into the bottom of the lower chamber 2.6; Fig.14 As shown in the figure, the bottoms of the three connecting columns 2.42 are connected to an annular stirring support frame 2.43, and the stirring support frame 2.43 is provided with a second stirring blade 2.44; Fig.14 In the illustrated embodiment, three second stirring blades 2.44 are arranged in a circular array on the stirring support frame 2.43, and the second stirring blades 2.44 contact the inner wall of the bottom cone bucket of the lower chamber 2.6; during the rotation of the second stirring blades 2.44, the flocculant solution is stirred from the bottom to drive the solution to flow in a circumferential direction; in addition, the second stirring blades 2.44 are used to scrape the material attached to the inner wall of the bottom cone bucket of the lower chamber 2.6 to avoid the deposition of too thick adhesive.

[0057] In order to further improve the mixing efficiency and mixing effect of the flocculant solution, in an optional embodiment of the present invention, a stirring structure is added in the center of the three connecting columns 2.42. Fig.14As shown in the figure, a plurality of first support rods 2.45 extend toward the center of the annular stirring support frame 2.43, and a vertical central axis 2.46 is connected in the middle of the first support rod 2.45, and the central axis 2.46 is located at the axis position of the lower chamber 2.6; a conical dispersion head 2.47 is arranged at the top of the central axis 2.46, and the tip of the dispersion head 2.47 faces upward and is located at the bottom outlet of the central tube 2.7; the dispersion head 2.47 is connected to the annular stirring support frame 2.43 through an inclined second support rod 2.48, and a second spiral blade 2.49 is arranged below the dispersion head 2.47 and around the central axis 2.46, and the second spiral blade 2.49 is connected to the central axis 2.46 through a plurality of third support rods 2.50. In addition, a rotatable third stirring blade 2.51 can also be arranged on the connecting column 2.42, and in the embodiment shown in the figure, three long strip-shaped third stirring blades 2.51 are arranged on each connecting column 2.42.

[0058] In the present invention, the second stirring blade 2.44, the second spiral blade 2.49 and the third stirring blade 2.51 together constitute a stirring system to efficiently stir the flocculant solution. The dispersion head 2.47 can disperse the solution falling from the central tube 2.7 around the third stirring blade 2.51 for stirring, and the second spiral blade 2.49 can drive the flocculant solution to flow up and down.

[0059] The flocculant solution is stirred for a preset time, and then sent to the mixing reaction tank 3.1 through the third discharge valve 2.25 and the third screw conveyor 2.26 to mix and stir with the heated mine water.

[0060] In an optional embodiment of the present invention, the mixing reaction tank 3.1 may also be equipped with a premixing device 5, and the prepared flocculant solution and the heated mine water are first sent to the premixing device 5 for premixing, and then introduced into the mixing reaction tank 3.1 for stirring reaction. Figure 2 As shown in FIG. 1 , the premixing device 5 is arranged on the first working platform 6.1, and is located on one side of the top cover of the mixing reaction tank 3.1.

[0061] like Fig.16 The figure shows the internal structure of the premixing device 5 of the present invention. The premixing device 5 comprises a rectangular premixing housing 5.1; Fig.16In the illustrated embodiment, the interior of the premixing shell 5.1 is divided into a first chamber 5.3, a second chamber 5.4, a third chamber 5.5, and a fourth chamber 5.6 from top to bottom by three inclined uniform plates 5.2; the uniform plates 5.2 are covered with long strips of water leakage gaps; the inclination directions of the two upper uniform plates 5.2 are consistent, with the left side higher and the right side lower; the inclination direction of the bottom uniform plate 5.2 is opposite to that of the two upper uniform plates 5.2, with the left side lower and the right side higher; the first infusion pipe 1.14 extends into the left side of the first chamber 5.3 to deliver the heated mine water into the first chamber 5.3; a rotatable first impeller 5.7 is arranged in the first chamber 5.3 and at the outlet position of the first infusion pipe 1.14, and the mine water pumped out by the first infusion pipe 1.14 impacts the first impeller 5.7 to rotate, and then the mine water flows to the lower right side and falls into the second chamber 5.4 below when passing through the water leakage gap. A feed port is arranged on the left side of the premixing shell 5.1, and a discharge pipe of the third screw conveyor 2.26 extends from the feed port into the second chamber 5.4; the flocculant solution flows from left to the lower right, and the falling mine water mixes with the flocculant solution and falls into the third chamber 5.5, and flows to the lower left along the bottom uniform distribution plate 5.2, and finally falls into the fourth chamber 5.6. The bottom surface of the fourth chamber 5.6 is inclined and connected to the side of the mixing reaction tank 3.1; the premixed solution enters the tank body from the side of the mixing reaction tank 3.1.

[0062] The premixing device 5 can reduce the impact force of the mine water and can evenly mix the mine water with the flocculant solution, thereby accelerating the flocculation reaction. This solves the following problems existing in the existing equipment: in the process of adding coagulant to sewage, under the continuous transportation of sewage, the mixing efficiency of the coagulant and sewage is low, which makes the flocculation time longer and the sedimentation speed of the flocculants slower, affecting the sewage treatment efficiency.

[0063] like Fig.17 The structure of a sedimentation tank 4 provided by the present invention is shown. In one embodiment of the present invention, the sedimentation tank 4 is divided into a sediment tank 4.1, a flocculation sedimentation tank 4.2, a flocculation supernatant storage tank 4.3, and a flocculation supernatant filter tank 4.4; wherein, the sediment discharged from the bottom of the preheating tank 1.1 is sent to the sediment tank 4.1 through the first discharge valve 1.2 and the first screw conveyor 1.3; the material discharged from the mixing reaction tank 3.1 is discharged into the flocculation sedimentation tank 4.2 through the second screw conveyor 3.3; the supernatant in the mixing reaction tank 3.1 is discharged into the flocculation supernatant storage tank 4.3 through the left guide box 8, and the supernatant contains unreacted flocculant; the flocculation supernatant storage tank 4.3 and the flocculation supernatant filter tank 4.4 are adjacently arranged, separated by a filter screen, and the filtered flocculation supernatant enters the supernatant filter tank; the supernatant in the supernatant filter tank is pumped into the cold water chamber 2.10 through a pipeline, heated, and then recycled.

[0064] An embodiment of the present invention further provides a water pollution treatment system, which uses the above-mentioned water pollution treatment device to perform the following treatment on mine water: input the mine water into the preheating unit 1 to heat it to a first preset temperature; input the flocculant powder into the batching unit 2 to disperse and dissolve it in water heated to a second preset temperature to form a solution; input the mine water heated to the first preset temperature and the flocculant solution configured to the second preset temperature into the mixing reaction unit 3 for stirring and reaction; and then discharge it into the sedimentation tank 4 for sedimentation.

[0065] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present invention are within the scope of protection of the present invention.

Claims

1. A water pollution treatment device for a coal mine water supply pump station, characterized in that: The invention comprises a preheating unit (1), a batching unit (2), a mixing reaction unit (3), and a sedimentation tank (4); the preheating unit (1) is used to heat mine water to a first preset temperature; the batching unit (2) is used to disperse and dissolve flocculant powder in water heated to a second preset temperature to form a solution; the mine water heated to the first preset temperature and the flocculant solution configured to the second preset temperature are input into the mixing reaction unit (3) for stirring and reaction; and then discharged into the sedimentation tank (4) for sedimentation.

2. The water pollution treatment device for a coal mine water supply pump station according to claim 1, characterized in that: The invention also comprises a first frame (6), wherein the first frame (6) comprises a first working platform (6.1) and a second working platform (6.2) arranged at different heights; a preheating unit (1) and a mixing reaction unit (3) are arranged on the second frame (7) below the first working platform (6.1), and a batching unit (2) is arranged on the second working platform (6.2); and a sedimentation tank (4) is arranged underground below the first frame (6).

3. The water pollution treatment device for a coal mine water supply pump station according to claim 2 is characterized in that: The second frame (7) comprises two symmetrically arranged rectangular flow guide boxes (8); a closed heat-insulating space (11) is formed between the two flow guide boxes (8).

4. The water pollution treatment device for a coal mine water supply pump station according to claim 3 is characterized in that: The preheating unit (1) comprises a preheating tank (1.1), which is arranged in a heat-insulating space (11); the preheating tank (1.1) is composed of an upper cylindrical barrel and a lower conical bucket; the bottom outlet of the conical bucket is connected to a first discharge valve (1.2), the bottom outlet of the first discharge valve (1.2) is connected to a feed port of a first screw conveyor (1.3), and the discharge port of the first screw conveyor (1.3) is connected to an underground sedimentation tank (4); the top of the side of the preheating tank (1.1) is connected to a first infusion pump (1.5) through a first liquid inlet pipe (1.4); the bottom of the side of the preheating tank (1.1) is connected to a flow guide box (8) through a first liquid discharge pipe (1.6); a first liquid discharge valve (1.7) is arranged on the first liquid discharge pipe (1.6); and a preheating stirring mechanism is arranged in the preheating tank (1.1).

5. The water pollution treatment device for a coal mine water supply pump station according to claim 4, characterized in that: A first fender (1.12) is arranged in the conical bucket at the bottom of the preheating tank (1.1); a through hole is provided in the middle of the first fender (1.12), and a storage chamber is formed between the first fender (1.12) and the conical bucket at the bottom of the preheating tank (1.1).

6. The water pollution treatment device for a coal mine water supply pump station according to claim 5, characterized in that: The preheating stirring mechanism comprises a first stirring main shaft (1.8), the top end of the first stirring main shaft (1.8) passes through the top cover of the preheating tank (1.1) and is connected to a first driving motor (1.9); the first stirring main shaft (1.8) is connected to a first spiral blade (1.11) via a first connecting rod (1.10), and the first spiral blade (1.11) is arranged around the first stirring main shaft (1.8); a first stirring blade (1.13) is arranged at the bottom of the first stirring main shaft (1.8), and the first stirring blade (1.13) is connected to the first stirring main shaft (1.8) via the first connecting rod (1.10); and the lower edge of the first stirring blade (1.13) contacts the upper surface of the first fender (1.12).

7. The water pollution treatment device for a coal mine water supply pump station according to claim 3, characterized in that: The mixing reaction unit (3) comprises a mixing reaction tank (3.1), a second discharge valve (3.2), a second screw conveyor (3.3), and a mixing and stirring mechanism; the mixing reaction tank (3.1) is arranged inside the heat preservation space (11); the bottom outlet of the mixing reaction tank (3.1) is connected to the second discharge valve (3.2); the bottom outlet of the second discharge valve (3.2) is connected to the feed port of the second screw conveyor (3.3), and the discharge port of the second screw conveyor (3.3) is connected to the underground sedimentation tank (4); the bottom of the side of the mixing reaction tank (3.1) is connected to the guide box (8) through the second liquid discharge pipe (3.4); the second liquid discharge pipe (3.4) is provided with a second liquid discharge valve (3.5); the top of the side of the mixing reaction tank (3.1) is provided with a liquid inlet; and the mixing and stirring mechanism is arranged inside the mixing reaction tank (3.1).

8. The water pollution treatment device for a coal mine water supply pump station according to claim 2, characterized in that: The batching unit (2) comprises a storage hopper (2.1), a screw feeder (2.2), a dispersion and dissolution tank (2.3), a third discharge valve (2.25), and a third screw conveyor (2.26); the storage hopper (2.1) is installed on the second working platform (6.2) through a frame and is used to store flocculant powder; the screw feeder (2.2) is arranged at an angle, the feed port of the screw feeder (2.2) is located in the storage hopper (2.1), and the discharge port of the screw feeder (2.2) is connected to the feed port of the dispersion and dissolution tank (2.3); a water inlet is arranged on the upper part of the dispersion and dissolution tank (2.3), and the water inlet is connected to the water supply equipment through a water supply pipe (2.13); A third discharge valve (2.25) is provided at the bottom discharge port of the dispersing and dissolving tank (2.3), the bottom discharge port of the third discharge valve (2.25) is connected to the feed port of the third screw conveyor (2.26), and the discharge port of the third screw conveyor (2.26) is connected to the mixing reaction tank (3.1); a dispersing and stirring mechanism is provided inside the dispersing and dissolving tank (2.3).

9. The water pollution treatment device for a coal mine water supply pump station according to claim 8, characterized in that: The interior of the dispersion and dissolution tank (2.3) is divided from top to bottom into an upper chamber (2.4), an intermediate chamber (2.5), and a lower chamber (2.6) by a partition. A central tube (2.7) is arranged in the center of the dispersion and dissolution tank (2.3), and the top of the central tube (2.7) protrudes from the top cover of the dispersion and dissolution tank (2.3); the central tube (2.7) passes through the upper chamber (2.4) and the intermediate chamber (2.5), and the bottom opening of the central tube (2.7) is located in the lower chamber (2.6); an annular partition (2.8) is arranged in the upper chamber (2.4) around the central tube (2.7), and the annular partition (2.8) separates the upper chamber (2.4) and the intermediate chamber (2.5). The chamber (2.4) is further divided into a hot water chamber (2.9) surrounding the central tube (2.7) and a cold water chamber (2.10) surrounding the hot water chamber (2.9); a water hole (2.11) is provided at the bottom of the annular partition (2.8); the water hole (2.11) connects the hot water chamber (2.9) and the cold water chamber (2.10); the upper chamber (2.4) is provided with a cold water inlet (2.12); the cold water inlet (2.12) is connected to the water supply equipment through a water supply pipe (2.13); the hot water chamber (2.9) is divided into a plurality of upper and lower distributed chambers by a plurality of annular diverter plates (2.14); chambers; a plurality of water holes (2.11) are evenly distributed on each diverter plate (2.14); a circular electric heating tube (2.15) is suspended in the annular space between adjacent diverter plates (2.14), and a heat conducting fin (2.16) is arranged on the electric heating tube (2.15); the top of the central tube (2.7) protrudes from the top cover of the dispersion and dissolution tank (2.3); a spray receiving chamber (2.18) is separated from the top of the central tube (2.7) by a spray plate (2.17), and the spray plate (2.17) is covered with water holes (2.11); the spray receiving chamber (2.18) is provided with a water inlet The water inlet is connected to a submersible pump (2.20) through a water suction pipe (2.19); the submersible pump (2.20) is arranged in the space above the uppermost diverter plate (2.14) of the hot water chamber (2.9); an inclined cylindrical powder delivery pipe (2.21) is arranged on the side wall of the central tube (2.7); the powder delivery pipe (2.21) is connected to the discharge port of the spiral feeder (2.2) through a first connecting pipe (2.22) extending upward; a stirring drive mechanism is arranged in the middle chamber (2.5), and a spreading stirring mechanism is arranged in the lower chamber (2.6); the stirring drive mechanism drives the spreading stirring mechanism to rotate.

10. A water pollution treatment system, characterized in that: The coal mine water supply pump station water pollution treatment device described in claim 1 is used to perform the following treatment on the mine water: the mine water is input into a preheating unit (1) to be heated to a first preset temperature; the flocculant powder is input into a batching unit (2) to be dispersed and dissolved in water heated to a second preset temperature to form a solution; the mine water heated to the first preset temperature and the flocculant solution configured to the second preset temperature are input into a mixing reaction unit (3) for stirring and reaction; and then discharged into a sedimentation tank (4) for sedimentation.

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