Integrated skid-mounted device for removing COD (Chemical Oxygen Demand) and total nitrogen in mine water

Abstract

The invention relates to the field of mine water treatment equipment, in particular to an integrated skid-mounted device for removing COD (Chemical Oxygen Demand) and total nitrogen in mine water, which comprises an adsorption unit, a front adsorption tank of the adsorption unit, an adsorption assembly and a lifting assembly, the other end of the water outlet pipe is communicated with the front adsorption tank; the joint of the water outlet pipe and the front adsorption tank is positioned above the lowermost adsorption assembly; a second lifting pump is arranged at an opening of the front adsorption tank; a liquid inlet pipe is mounted on the second lifting pump; the adsorption assembly comprises a containing box, a sponge cushion layer, activated carbon, filter cloth and a cover plate, meshes are formed in the plate surface of the cover plate, the length and the width of the containing box are both smaller than the length and the width of a pool opening of the front adsorption pool, and the thickness of the sponge cushion layer is larger than the spacing distance between the containing box and the front adsorption pool; the effects of keeping the filtering speed of the activated carbon and stabilizing the adsorption efficiency of the activated carbon when a large amount of mine water is purified are achieved.

Description

Technical Field

[0001] The present application relates to the field of mine water treatment equipment, and in particular to an integrated skid-mounted device used for removing COD and total nitrogen from mine water. Background Art

[0002] At present, mine water refers to all the water that is filled into the underground mining space during the coal mining process. It is the groundwater polluted during the coal mining process. Coal mine water is mostly high-mineralized mine water, with a total dissolved solid mass concentration greater than or equal to 1000 mg / L, and cannot meet the discharge standards after simple treatment. COD is an important indicator in mine water treatment, which is used to evaluate the degree of organic pollution in water bodies. By measuring COD, we can understand the content of organic matter in mine water, thereby judging the effect and degree of pollution of mine water treatment, and by monitoring COD, we can ensure that the treated water quality meets the discharge standards.

[0003] In order to make the treated mine water meet the discharge standards, the coagulation sedimentation-biochemical treatment process or the coagulation sedimentation-advanced oxidation cascade process is generally used to treat the mine water. When treating the mine water, it is necessary to use an activated carbon adsorption tank to adsorb the mine water in the early stage. Most of the existing activated carbon sewage treatment devices adopt a cylinder structure, and the activated carbon is placed in the cylinder. The sewage is adsorbed by the activated carbon in the cylinder to achieve the water purification effect.

[0004] The above-mentioned existing technical solutions have the following defects: the diameter of the cylinder containing activated carbon is restricted by the structure and the volume scale of the single cylinder is limited. In the process of purifying a large amount of mine water, it is necessary to use a large number of single cylinders in stacking, which has the disadvantages of large occupied area and complicated operation. After long-term operation, it will also cause the accumulation of pollutants on the surface of the activated carbon adsorption layer, reduce the filtration speed, and cause the activated carbon to become compacted, which greatly reduces the adsorption efficiency of the activated carbon. Summary of the invention

[0005] In order to maintain the activated carbon filtration speed and stabilize the adsorption efficiency of activated carbon when purifying a large amount of mine water, the present application provides an integrated skid-mounted device for removing COD and total nitrogen from mine water.

[0006] The above technical objectives of this application are achieved through the following technical solutions: An integrated skid-mounted device for removing COD and total nitrogen from mine water, comprising a water collection unit, an adsorption unit, a hardness and fluorine removal unit, a precipitation unit, an intermediate water pool unit, an ozone catalytic oxidation unit, an AO unit pool, a sludge dewatering machine and a sulfur autotrophic pool which are connected in sequence, wherein the water collection unit comprises a water outlet pipe at one end connected to the water collection unit; The adsorption unit comprises a front adsorption tank with an open top, a plurality of groups of adsorption components that are movable and arranged in the front adsorption tank at intervals, and a lifting component arranged above the front adsorption tank for lifting the adsorption component; The other end of the water outlet pipe is fixedly connected to and communicates with the front adsorption tank, and the connection between the water outlet pipe and the front adsorption tank is located above the bottommost adsorption assembly; A second lifting pump is arranged in the open front adsorption tank and above the uppermost adsorption assembly, and a liquid inlet pipe for discharging the mine water in the front adsorption tank is installed on the second lifting pump, and the liquid inlet pipe is a flexible pipe; The adsorption assembly includes a containing box with mesh holes at the bottom and an open top, a sponge pad fixedly arranged on the outer wall of the containing box, activated carbon placed inside the containing box and flush with the box opening, filter cloth laid between the activated carbon and the box opening, and a cover plate detachably connected to the containing box and used to cover the box opening, mesh holes being arranged on the surface of the cover plate, the length and width of the containing box are both smaller than the length and width of the front adsorption tank opening, the thickness of the sponge pad is greater than the distance between the containing box and the front adsorption tank, and the lifting end of the lifting assembly is detachably connected to the cover plate.

[0007] By adopting the above technical solution, the overall structure of the skid-mounted device is reasonably designed and compact, and can purify a large amount of mine water in real time during the mine excavation process. The connection between the outlet pipe and the front adsorption tank is located between the two layers of the lower containing boxes, which can not only reduce the sludge deposition at the bottom of the front adsorption tank, but also facilitate the stable operation of the second submersible mixer. The mine water rises from the bottom to the high water level in the front adsorption tank. The adsorption component can not only effectively block the sludge in the mine water, but also enhance the adsorption component to effectively adsorb sludge and other impurities. After long-term operation, it will not cause the accumulation of surface pollutants on the activated carbon adsorption layer to reduce the filtration speed, and will also reduce the probability of activated carbon compaction, greatly improving the adsorption efficiency of activated carbon, thereby significantly reducing the content of impurities in the mine water discharged from the front adsorption tank, which is conducive to the subsequent purification of mine water.

[0008] Optionally, handles are installed on opposite sides of the cover plate, and an arc section is formed in the middle of the handles, and the opening of the arc section faces the cover plate; A hook is installed on the lifting end of the lifting assembly, and the hook can be hooked on the arc segment.

[0009] By adopting the above technical solution, the arc segment can keep the packaging box stably connected to the lifting end of the lifting assembly, and can also facilitate the stable lifting of the packaging box.

[0010] Optionally, a second submersible mixer is provided at the bottom of the front adsorption tank, and the second submersible mixer is located below the lowermost adsorption assembly.

[0011] By adopting the above technical solution, the second submersible mixer promotes the mixing of sludge and sewage to prevent sludge sedimentation. The submersible mixer effectively prevents the sedimentation of activated sludge in the collection tank by generating a stable and uniform horizontal flow.

[0012] Optionally, one end of the liquid inlet pipe away from the front adsorption tank is connected to a hardness and fluorine removal box, and a first stirring mechanism is installed on the hardness and fluorine removal box; The first stirring mechanism comprises a door frame with both ends fixed to the top of the hardness and fluorine removal box, a first driving component arranged on the door frame, a first stirring member rotatably connected to the output end of the first driving component, a second driving component installed on the top of the defluorination box and driving the first stirring member, and an adjusting component installed on the top of the defluorination box for adjusting the second driving component; The first driving component includes a driving plate suspended below the portal frame and between the portal frame and the defluorination box; The first stirring member comprises a first rotating shaft rotatably arranged on the driving disk and having an axial direction parallel to the axis of the driving disk, and a first stirring wing and a second stirring wing installed on the first rotating shaft from top to bottom along the axis of the first rotating shaft at intervals; The second driving component includes a driving sprocket suspended and installed below the portal frame, a driven sprocket and a chain sleeved and fixedly connected to the first rotating shaft and located below the driving disc; The adjusting component adjusts the chain to always be engaged with the driving sprocket and the driven sprocket.

[0013] By adopting the above technical solution, the first rotating shaft can rotate in the de-hardening and de-fluorinating box along with the driving disk under the limiting effect of the adjusting component, and the first rotating shaft forms a self-rotation in the de-hardening and de-fluorinating box, so that the first rotating shaft, the first stirring wing and the second stirring wing simultaneously stir and disturb the mine water in the de-hardening and de-fluorinating box at multiple positions, thereby improving the reaction speed between the agent and the ionic impurities. The first stirring wing and the second stirring wing are staggered in sequence, which significantly increases the stirring position of the stirring member for the mine water in the de-hardening and de-fluorinating box, so that the agent can more fully contact the ionic impurities in the mine water, further effectively improving the reaction speed between the agent and the ionic impurities, and effectively improving the working speed of the mine water purification treatment.

[0014] Optionally, the adjusting component includes a limiting groove fixedly connected to the top of the defluorination box, a connecting rod with one end rollingly arranged in the limiting groove and the other end rotatably connected to the first rotating shaft, and an adjusting sprocket rotatably installed on the connecting rod, the chain is wound around and meshed with the driving sprocket, the driven sprocket and the adjusting sprocket, the driving sprocket, the driven sprocket and the adjusting sprocket are always arranged in a triangle, when the distance between the driving sprocket and the driven sprocket is the smallest, the adjusting sprocket is located at the end of the limiting groove away from the driving disk, and when the distance between the driving sprocket and the driven sprocket is the largest, the adjusting sprocket is located at the end of the limiting groove close to the driving disk.

[0015] By adopting the above technical scheme, the adjustment component has the characteristics of simple structure and stable operation, and can ensure that the first rotating shaft can revolve stably on the hardness and fluorine removal box, thereby ensuring that the mine water and the reagent are fully stirred, and increasing the contact probability between the reagent and the ionic impurities in the mine water, which is conducive to the effective purification of a large amount of mine water.

[0016] Optionally, the first stirring wing comprises a circular plate coaxially fixed to the first rotating shaft and a bent plate fixed to the edge of the circular plate, wherein a plurality of bent plates are arranged around the outer diameter of the circular plate, and the plurality of bent plates are sequentially located on both sides of the two plate surfaces of the circular plate, and a through hole is opened on the plate surface of the circular plate; The second stirring wing can push the water flow toward the first stirring wing.

[0017] By adopting the above technical solution, during the rotation of the first stirring wing, the through hole can form a cavity inside the mine water. After the defluorination agent, alkali solution, flocculant and other agents enter the cavity inside the mine water, the contact area between the agent and the mine water can be increased, thereby increasing the speed of the agent removing ionic impurities. After the second stirring wing rotates, it can push the mine water toward the first stirring wing, so that the mine water forms a circulation from bottom to top in the hardness and fluorine removal box, and cooperates with the first stirring wing to further increase the reaction speed of the agent removing ionic impurities.

[0018] Optionally, the adsorption unit further includes a post-adsorption tank; The precipitation unit is provided with four reflux pumps and reflux pipes connected to the reflux pumps, wherein two reflux pipes are connected to the front adsorption tank, one reflux pipe is connected to the rear adsorption tank, and the other reflux pipe is connected to the AO unit tank.

[0019] Optionally, the AO unit pool is provided with a dissolved oxygen meter, a first ORP meter, a third submersible mixer, an aeration fan and an aeration plate. The third submersible mixer is suspended in the middle of the AO unit pool, the aeration plate is arranged inside the AO unit pool, and the aeration fan is installed on the top of the AO unit pool and is connected with the top of the aeration plate.

[0020] By adopting the above technical scheme, the mine water treated in the previous steps is combined with the different environmental conditions of the anaerobic zone, the anoxic zone and the aerobic zone, and the biodegradation ability of microorganisms is utilized to gradually decompose and oxidize organic matter and pollutants such as ammonia and phosphorus in the sewage, thereby achieving the purpose of purifying the mine sewage.

[0021] Optionally, a second ORP meter is provided in the sulfur autotrophic tank, a sulfur autotrophic filler mechanism is provided on the top of the sulfur autotrophic tank, a backwash water pump is provided in the sulfur autotrophic tank, a sixth water pipe is connected to the backwash water pump, one end of the sixth water pipe is fixedly connected to the backwash water pump, and the other end thereof is fixedly connected to and communicated with the post-ozone catalytic oxidation tank.

[0022] By adopting the above technical solution, the second ORP meter can understand the self-purification ability, biological activity and water quality of the water body by measuring the redox potential (ORP value) of the water body. In the sewage treatment process, the change of ORP value can be used to judge the activity and efficiency of the biological treatment unit, guide the adjustment of aeration volume and dosage of reagents, and optimize the sewage treatment process. The backwash pump provides backwash water for the sulfur autotrophic tank to help the sulfur autotrophic tank restore its filtration capacity. By increasing the amount of filler in the sulfur autotrophic tank, the backwash pump improves the filtration effect and water production without increasing the flow or filtration cycle.

[0023] Optionally, the water collection unit includes a water collection tank with an open top, an inlet pipe connected to the interior of the water collection tank at one end, a first electromagnetic flowmeter installed on the inlet pipe, an inlet pump installed on the other end of the inlet pipe, a first submersible mixer suspended inside the water collection tank, a first lifting pump arranged inside the water collection tank, an outlet pipe fixedly connected to the first lifting pump at one end and extending from the opening of the water collection tank to the outside at the other end, a second electromagnetic flowmeter installed on the outlet pipe, and a liquid level meter installed on the inner wall of the water collection tank.

[0024] By adopting the above technical solution, the water inlet pump is placed in the water source of the mining area during use, so that the mine water can be collected into the water collection tank through the water inlet pipe, and the water collection speed can be observed in real time through the first electromagnetic flowmeter. After injecting water into the water collection tank, the first submersible mixer can evenly distribute the suspended matter, sediment, etc. in the water, avoid dead corners of water quality, and thus improve the homogeneity of the outlet water quality. The mine water temporarily stored in the water collection tank can be discharged through the first lifting pump and the outlet pipe, and the second electromagnetic flowmeter can monitor the discharge of the mine water in real time.

[0025] In summary, this application has the following technical effects: 1. By setting up the adsorption unit, the connection between the outlet pipe and the front adsorption tank is located between the two layers of the lower containing boxes, which can not only reduce the sludge deposition at the bottom of the front adsorption tank, but also increase the water level of the mine water in the front adsorption tank from the bottom up. The adsorption component can effectively block the sludge in the mine water and improve the adsorption component to effectively adsorb the sludge and other impurities. After long-term operation, it will not cause the accumulation of pollutants on the surface of the activated carbon adsorption layer to reduce the filtration speed, and will also reduce the probability of activated carbon hardening, greatly improving the adsorption efficiency of activated carbon, thereby significantly reducing the content of impurities in the mine water discharged from the front adsorption tank, which is conducive to the subsequent purification of mine water; 2. By providing an arc section in the middle of the handle, the arc section can keep the container stably connected to the lifting end of the lifting assembly, and can also facilitate the stable lifting of the container; 3. By setting up a second submersible mixer, the mixing of sludge and sewage is promoted to prevent sludge sedimentation. The submersible mixer effectively prevents the sedimentation of activated sludge in the collection tank by generating a stable and uniform horizontal flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the appearance structure diagram of this application; Figure 2 This is the structural diagram of this application after removing the mounting frame; Figure 3 This is the top view of this application after removing the mounting frame; Figure 4 It is a structural diagram of the water collection unit; Figure 5 It is a cross-sectional structural diagram of the front adsorption cell; Figure 6 It is the assembly mechanism diagram of the adsorption component; Figure 7 It is a cross-sectional structural diagram of a hardness and fluorine removal box; Figure 8 is a structural diagram of the first stirring mechanism; Fig. 9 It is a schematic diagram of the structure of the sedimentation unit and the sludge dewatering machine; Fig.10 is a structural schematic diagram of a second stirring mechanism; Fig.11 It is a cross-sectional structural diagram of the first intermediate water tank and the front ozone catalytic oxidation tank; Fig.12 It is a cross-sectional structural diagram of the post-ozonation catalytic oxidation tank; Fig.13 It is a cross-sectional structural diagram of the AO unit cell; Fig.14 This is a cross-sectional diagram of the sulfur autotrophic pond.

[0027] Explanation of reference numerals: 1. water collection unit; 110. water collection tank; 120. water inlet pipe; 130. first electromagnetic flowmeter; 140. water inlet pump; 150. first submersible mixer; 160. first lifting pump; 170. water outlet pipe; 180. second electromagnetic flowmeter; 190. liquid level meter; 2. adsorption unit; 21. front adsorption tank; 22. second submersible mixer; 23. adsorption assembly; 231. container; 232. sponge cushion; 233. activated carbon; 234. filter cloth; 235. screw; 236. cover plate; 237. handle; 238. nut; 24. lifting assembly; 241. winch; 242. wire rope; 243. hook; 25. rear adsorption tank; 3. hardness and fluorine removal unit; 31. hardness and fluorine removal box; 32, liquid inlet pipe; 33, second lifting pump; 34, first dosing mechanism; 35, first stirring mechanism; 351, door frame; 352, first driving component; 3521, first driving motor; 3522, driving disk; 3523, fixed cylinder; 353, first stirring member; 3531, first rotating shaft; 3532, first bearing; 3533, first stirring wing; 35331, circular plate; 35332, bending plate; 35333, through hole; 3534, second stirring wing; 354, second driving component; 3541, second driving motor; 3542, driving sprocket; 3543, driven sprocket; 3544, chain; 355, adjusting component; 3551, limiting groove; 3552, limiting pulley; 355 3. Connecting rod; 3554. Second bearing; 3555. Adjusting sprocket; 36. First sludge conveying pump; 37. First sludge conveying pipe; 4. Sedimentation unit; 41. First sedimentation tank; 411. Second sludge conveying pipe; 412. Second sludge conveying pump; 413. First return pump; 414. First return pipe; 415. Third lifting pump; 416. First conveying pipe; 42. Second sedimentation tank; 421. Third sludge conveying pipe; 422. Third sludge conveying pump; 423. Second return pump; 424. Second return pipe; 425. Fourth lifting pump; 426. Second conveying pipe; 43. Third sedimentation tank; 431. Fourth sludge conveying pipe; 432. Fourth sludge conveying pump; 433. Third return pump; 434. three reflux pipes; 435, fourth reflux pump; 436, fourth reflux pipe; 437, fifth lifting pump; 438, third delivery pipe; 44, second stirring mechanism; 441, horizontal plate; 442, third drive motor; 443, second rotating shaft; 444, first stirring plate; 445, second stirring plate; 5, intermediate water tank unit; 51, first intermediate water tank; 511, first water delivery pump; 512, first water delivery pipe; 52, second intermediate water tank; 521, second water delivery pump; 522, second water delivery pipe; 6, ozone catalytic oxidation unit; 61, front ozone catalytic oxidation tank; 611, first ozone generator; 612, third water delivery pump; 613, third water delivery pipe; 62, rear ozone catalytic oxidation tank; 621, second ozone generator;622, the fourth water delivery pump; 623, the fourth water delivery pipe; 7, AO unit pool; 71, dissolved oxygen meter; 72, the first ORP meter; 73, the third submersible mixer; 74, aeration fan; 75, aeration plate; 76, the third water delivery pump; 77, the fifth water delivery pipe; 8, sludge dewatering machine; 81, the fifth sludge delivery pipe; 82, the fifth sludge delivery pump; 83, the filtrate recovery pump; 84, the filtrate recovery pipe; 9, the sulfur autotrophic tank; 91, the second ORP meter; 92, the sulfur autotrophic filler mechanism; 93, the backwash water pump; 94, the sixth water delivery pipe; 10, the clear water tank; 11, the mounting frame; 111, the bottom plate; 112, the bridge frame; 12, the electric control system; 121, the PLC cabinet; 122, the frequency conversion cabinet; 123, the power distribution cabinet; 124, the instrument box. ; DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings.

[0029] The present application discloses an integrated skid-mounted device for removing COD and total nitrogen from mine water. Figure 1-Figure 3 The skid-mounted device includes a mounting frame 11, a water collection unit 1, an adsorption unit 2, a hardness and fluorine removal unit 3, a sedimentation unit 4, an intermediate water tank unit 5, an ozone catalytic oxidation unit 6, an AO unit tank 7, a sludge dewatering machine 8, a sulfur autotrophic tank 9 and a clear water tank 10 which are sequentially arranged on the mounting frame 11. The mounting frame 11 includes a horizontally arranged front bottom plate 111 and a bridge frame 112 arranged on the upper part of the bottom plate 111. The bottom plate 111 is a strip plate. The bridge frame 112 is inverted U-shaped and its two ends are respectively fixedly connected to the two ends of the bottom plate 111. The upper part of the bridge frame 112 is suspended from the bottom plate 111, providing sufficient installation space for components such as the water collection unit 1.

[0030] Reference Figure 4 The water collection unit 1 includes a water collection tank 110 with an open top, a water inlet pipe 120 with one end fixed to the outer wall of the water collection tank 110 and communicating with the inside of the water collection tank 110, a first electromagnetic flowmeter 130 installed on the water inlet pipe 120, a water inlet pump 140 installed on the other end of the water inlet pipe 120, a first submersible mixer 150 suspended inside the water collection tank 110, a first lifting pump 160 arranged inside the water collection tank 110, a water outlet pipe 170 with one end fixedly connected to the first lifting pump 160 and the other end extending from the open end of the water collection tank 110 to the outside of the water collection tank 110, a second electromagnetic flowmeter 180 installed on the water outlet pipe 170, and a liquid level meter 190 installed on the inner wall of the water collection tank 110. The water collection tank 110 is located at the upper part of one end of the bottom plate 111.

[0031] When in use, the water inlet pump 140 is placed in the water source of the mining area, so that the mine water can be collected into the water collection tank 110 through the water inlet pipe 120, and the water collection speed can be observed in real time through the first electromagnetic flowmeter 130. After water is injected into the water collection tank 110, the first submersible mixer 150 can evenly distribute the suspended matter, sediment, etc. in the water, avoid dead corners of water quality, and thus improve the homogeneity of the outlet water quality. The mine water temporarily stored in the water collection tank 110 can be discharged through the first lifting pump 160 and the outlet pipe 170, and the second electromagnetic flowmeter 180 can monitor the discharge of the mine water in real time.

[0032] Combination Figure 3 and Figure 5 The adsorption unit 2 includes a front adsorption tank 21 and a rear adsorption tank 25 with an open top, a second submersible mixer 22 disposed in the adsorption tank, an adsorption assembly 23 movably disposed in the adsorption tank, and a lifting assembly 24 disposed on the bridge 112 and located above the adsorption tank. The front adsorption tank 21 is located on the bottom plate 111 and on the side of the water collecting tank away from the end of the bottom plate 111. The outlet pipe 170 is fixedly connected to the middle of the outer wall of the front adsorption tank 21 at one end away from the first lifting pump 160, and the outlet pipe 170 is connected to the inside of the front adsorption tank 21. The second submersible mixer 22 promotes the mixing of sludge and sewage to prevent sludge deposition. The submersible mixer effectively prevents the deposition of active sludge in the water collecting tank 110 by generating a stable and uniform horizontal flow.

[0033] Reference Figure 6 The adsorption assembly 23 includes a container 231 with mesh holes at the bottom and an open top, a sponge pad 232 fixedly arranged on the outer wall of the container 231, activated carbon 233 placed inside the container 231 and flush with the box opening of the container 231, a filter cloth 234 laid between the activated carbon 233 and the box opening of the container 231, a screw 235 vertically arranged and fixed at the lower end at the four corners of the box opening of the container 231, a cover plate 236 for covering the box opening of the container 231, handles 237 fixedly arranged on opposite sides of the cover plate 236, and a nut 238 threadedly connected to the screw 235.

[0034] The length and width of the container box 231 are smaller than the length and width of the adsorption tank opening, and the thickness of the sponge cushion layer 232 is greater than the distance between the container box 231 and the adsorption tank. The cover plate 236 is also provided with mesh holes, and the four corners of the cover plate 236 are respectively provided with round holes for the screw 235 to enter and exit. After the cover plate 236 is placed on the filter cloth 234, the screw 235 is inserted into the round hole. After the nut 238 is connected to the screw 235, the cover plate 236 can be stably connected to the container box 231. At the same time, it is also convenient to clean and replace the activated carbon 233 in the container box 231 later, ensuring that the filtration speed of the activated carbon 233 is maintained when purifying a large amount of mine water, and stabilizing the adsorption efficiency of the activated carbon 233.

[0035] Combination Figure 2 and Figure 5 The lifting assembly 24 includes a winch 241 disposed on the top of the bridge 112, a steel wire rope 242 with one end fixed to the winch 241, and a plurality of hooks 243 movably connected to the steel wire rope 242. The plurality of hooks 243 are arranged at equal intervals along the length direction of the steel wire rope 242. There are two groups of lifting assemblies 24, and the two groups of lifting assemblies 24 are respectively located above the opposite sides of the adsorption tank opening. The middle part of the handle 237 is processed to form an arc segment, and the arc opening of the arc segment faces the cover plate 236. The hook 243 can be hooked on the arc segment, thereby lifting the adsorption assembly 23.

[0036] In this embodiment, four groups of adsorption components 23 are provided, and the bottom-level storage box 231 is located above the second submersible mixer 22. The connection between the outlet pipe 170 and the front adsorption tank 21 is located between the two layers of storage boxes 231 below, which can reduce the sludge deposition at the bottom of the front adsorption tank 21, and facilitate the stable operation of the second submersible mixer 22. The mine water rises from the bottom to the water level in the front adsorption tank 21. The adsorption component 23 can effectively block the sludge in the mine water and can also effectively adsorb the sludge and other impurities by the adsorption component 23, thereby significantly reducing the content of impurities in the mine water discharged from the front adsorption tank 21, which is conducive to the subsequent purification of the mine water.

[0037] Combination Figure 1 , Figure 5 and Figure 7 The hardness and fluorine removal unit 3 includes a hardness and fluorine removal box 31 disposed on the bottom plate 111 and located on the side of the front adsorption tank 21 away from the water collection tank 110, a liquid inlet pipe 32 with one end fixedly connected to and connected to the top of the hardness and fluorine removal box 31 and the other end disposed inside the front adsorption tank 21, a second lift pump 33 disposed in the front adsorption tank 21 and fixedly connected to the end of the liquid inlet pipe 32, a first dosing mechanism 34 disposed on the top of the hardness and fluorine removal box 31 for dosing drugs in the hardness and fluorine removal box 31, and a first stirring mechanism 35 disposed on the top of the hardness and fluorine removal box 31 for stirring the mine water inside the hardness and fluorine removal box 31. The hardness and fluorine removal box 31 is a long box body, and the length direction of the hardness and fluorine removal box 31 is parallel to the length direction of the bottom plate 111. Four groups of first stirring mechanisms 35 are disposed at equal intervals along the length direction of the hardness and fluorine removal box 31. The second lifting pump 33 is located above the topmost adsorption assembly 23, and the liquid inlet pipe 32 is a flexible pipe, which is convenient for taking out the second lifting pump 33 from the opening of the front adsorption tank 21 before the lifting assembly 24 lifts the adsorption assembly 23. The first dosing mechanism 34 stores defluoridation agent, alkali solution, sodium carbonate, flocculant, coagulant aid and other agents to remove calcium, magnesium and fluoride ions in the mine water. When the mine water enters the de-hardening and de-fluoridating tank 31, multiple agents are added to the de-hardening and de-fluoridating tank 31, and under the stirring action of the first stirring mechanism 35, the agents react with the ionic impurities in the mine water, thereby removing the ionic impurities in the water.

[0038] The first dosing mechanism 34 includes a plurality of dosing barrels arranged on the top of the hardness and fluorine removal box 31, a dosing pump connected to the dosing barrels, and a float flowmeter arranged in the dosing barrels. The dosing barrels are connected to the dosing pumps through pipelines, and the dosing pumps are also connected to the hardness and fluorine removal box 31 through pipelines. The float flowmeter can be used to observe the defluorination agent entering the hardness and fluorine removal box 31 in real time.

[0039] Combination Figure 7 and Figure 8 The first stirring mechanism 35 includes a door frame 351 installed on the top surface of the hardness and fluorine removal box 31, a first driving component 352 arranged on the door frame 351 and located on the top surface of the hardness and fluorine removal box 31, a first stirring member 353 whose upper end is rotatably connected to the output end of the first driving component 352 and located inside the hardness and fluorine removal box 31, a second driving component 354 arranged on the top surface of the hardness and fluorine removal box 31 and whose driving end is transmission-connected to the upper end of the first stirring member 353, and an adjusting component 355 arranged on the top surface of the hardness and fluorine removal box 31 to cooperate with the second driving component 354. Multiple groups of first stirring mechanisms 35 are arranged at intervals along the length direction of the top of the hardness and fluorine removal box 31, and the rotation directions of two adjacent groups of first stirring mechanisms 35 are arranged in opposite directions.

[0040] Reference Figure 7 The portal frame 351 is U-shaped and the U-shaped opening faces the top surface of the hardness and fluorine removal box 31. Both ends of the portal frame 351 are fixedly connected to the top surface of the hardness and fluorine removal box 31. The first driving component 352 includes a first driving motor 3521 fixedly arranged on the upper part of the portal frame 351 and the output shaft is rotatably arranged on the portal frame 351, a driving disk 3522 fixedly connected to the output shaft of the first driving motor 3521 and located between the portal frame 351 and the top surface of the hardness and fluorine removal box 31, and a fixed cylinder 3523 passing through and fixedly connected to the driving disk 3522, the axis of the fixed cylinder 3523 and the axis of the driving disk 3522 are parallel to each other, and the fixed cylinder 3523 and the driving disk 3522 are eccentrically arranged. The output shaft of the first driving motor 3521 is perpendicular to the top surface of the hardness and fluorine removal box 31 and the axial direction of the driving disk 3522.

[0041] Reference Figure 8The first stirring member 353 includes a first rotating shaft 3531 that penetrates the fixed cylinder 3523 at the upper end, two first bearings 3532 that are sleeved on the first rotating shaft 3531 and are spaced apart, a first stirring wing 3533 and a second stirring wing 3534 that are installed on the first rotating shaft 3531 from top to bottom along the length direction of the first rotating shaft 3531, the inner ring of the first bearing 3532 is fixedly connected to the first rotating shaft 3531, and the outer rings of the two first bearings 3532 are fixedly connected to the upper and lower ends of the fixed cylinder 3523, so that the first rotating shaft 3531 is rotatably set in the fixed cylinder 3523. A circular hole is opened at the top of the hardness and fluorine removal box 31, and the first rotating shaft 3531 is located in the circular hole. In this embodiment, two first stirring wings 3533 and two second stirring wings 3534 are respectively provided, and the first stirring wings 3533 and the second stirring wings 3534 are alternately and spaced apart in sequence along the length direction of the first rotating shaft 3531.

[0042] Reference Figure 8 The first stirring wing 3533 includes a circular plate 35331 coaxially mounted on the first rotating shaft 3531, and a bending plate 35332 integrally formed and arranged at the edge of the circular plate 35331. The bending plates 35332 are processed in multiple pieces around the edge of the circular plate 35331, and the multiple bending plates 35332 are alternately arranged on both sides of the surface of the circular plate 35331. A plurality of circles of through holes 35333 are provided on the surface of the circular plate 35331 around the center of the circular plate 35331, and each circle of through holes 35333 is provided with multiple circles, and the two adjacent circles of through holes 35333 are staggered. During the rotation of the first stirring wing 3533 with the first rotating shaft 3531, the through holes 35333 can form a cavity inside the mine water. After the defluoridation agent enters the cavity inside the mine water, the contact area between the defluoridation agent, alkali solution, flocculant and other agents and the mine water can be increased, thereby increasing the speed at which the agents remove calcium, magnesium and fluoride ions in the mine water. After the second stirring wing 3534 rotates, it can push the mine water toward the first stirring wing 3533, so that the mine water forms a circulation from bottom to top in the de-hardening and de-fluorinating box 31, and cooperates with the first stirring wing 3533 to further improve the reaction speed of the agent to remove ionic impurities. The first stirring wings 3533 and the second stirring wings 3534 in the multiple groups of first stirring members 353 are staggered in sequence, which significantly increases the stirring position of the stirring member on the mine water in the de-hardening and de-fluorinating box 31, so that the de-fluorinating agent can more fully contact the ionic impurities in the mine water, and effectively improve the reaction speed of the agent and the ionic impurities.

[0043] Combination Figure 7 and Figure 8The second driving component 354 includes a second driving motor 3541 fixedly arranged on the gantry 351 and spaced apart from the first driving motor 3521, a driving sprocket 3542 sleeved and fixedly connected to the output shaft of the second driving motor 3541, a driven sprocket 3543 sleeved and fixedly connected to the first rotating shaft 3531, and a chain 3544 wound around the driving sprocket 3542 and the driven sprocket 3543. The output shaft of the second driving motor 3541 is arranged upward away from the top surface of the hardness and fluorine removal box 31, the driving sprocket 3542 and the driven sprocket 3543 are located at the same horizontal height, and the driven sprocket 3543 is located below the driving disk 3522 and spaced apart from the first bearing 3532.

[0044] Reference Figure 8 The adjusting component 355 includes a limiting groove 3551 fixedly arranged on the top surface of the hardness and fluorine removal box 31, a limiting pulley 3552 rollingly arranged in the limiting groove 3551, an L-shaped connecting rod 3553, and an adjusting sprocket 3555 rotatably arranged on the connecting rod 3553. Both ends of the limiting groove 3551 are not closed, and its notch faces away from the top surface of the hardness and fluorine removal box 31. The length direction of the limiting groove 3551 coincides with the center line of the longest distance between the first rotating shaft 3531 and the output shaft axis of the second driving motor 3541. The limiting groove 3551 is spaced from the first rotating shaft 3531 at one end close to the first rotating shaft 3531.

[0045] One end of the connecting rod 3553 is fixedly connected to the second bearing 3554, and the end of the connecting rod 3553 is fixedly connected to the outer ring of the second bearing 3554. The inner ring of the second bearing 3554 is sleeved on the first rotating shaft 3531 and is located below the driving disk 3522. The second bearing 3554 is located between the driven sprocket 3543 and the lower end of the fixed cylinder 3523. One end of the connecting rod 3553 away from the first rotating shaft 3531 is rotatably connected to the limiting pulley 3552. The adjusting sprocket 3555 is rotatably set on the connecting rod 3553 and is located above the limiting pulley 3552. The adjusting sprocket 3555 and the driving sprocket 3542 are located at the same horizontal height, and the chain 3544 is wound around the adjusting sprocket 3555 and meshed therewith.

[0046] When the distance between the first rotating shaft 3531 and the output shaft of the second driving motor 3541 is the smallest, the limiting pulley 3552 abuts against the end of the limiting groove 3551 away from the driven gear; when the distance between the first rotating shaft 3531 and the output shaft of the second driving motor 3541 is the largest, the limiting pulley 3552 abuts against the end of the limiting groove 3551 close to the driven gear. The driving sprocket 3542, the driven sprocket 3543 and the adjusting sprocket 3555 are always arranged in a triangle. When the first rotating shaft 3531 rotates with the driving disk 3522, it can stably drive the limiting pulley 3552 to move in both ends of the limiting groove 3551.

[0047] While the first driving motor 3521 drives the first rotating shaft 3531 to revolve in the hardness and fluorine removal box 31, the second driving motor 3541 causes the first rotating shaft 3531 to rotate in the hardness and fluorine removal box 31, so that the first rotating shaft 3531, the first stirring wing 3533 and the second stirring wing 3534 simultaneously stir and disturb the mine water in the hardness and fluorine removal box 31 at multiple positions, further improving the reaction speed between the reagent and the ionic impurities, and improving the working speed of the mine water purification treatment.

[0048] Reference Figure 7 A first sludge conveying pump 36 connected to the hardness and fluorine removal box 31 is fixedly installed at the bottom outside the hardness and fluorine removal box 31, and a first sludge conveying pipe 37 is connected to the sludge conveying pump 36. One end of the first sludge conveying pipe 37 is fixedly connected to the first sludge conveying pump 36 for discharging the mine water in the hardness and fluorine removal box 31.

[0049] Combination Figure 3 and Fig. 9 The sedimentation unit 4 includes a first sedimentation tank 41, a second sedimentation tank 42 and a third sedimentation tank 43 which are sequentially arranged on the bottom plate 111 and located at the end of the hardness removal and fluorine removal box 31 away from the front adsorption tank 21. The connection direction of the three is perpendicular to the length direction of the hardness removal and fluorine removal box 31. The top of each sedimentation tank is opened, and its bottom is conical. One end of the first sludge conveying pipe 37 away from the first sludge conveying pump 36 is fixedly connected to the opening of the first sedimentation tank 41 to convey the mine water in the hardness removal and fluorine removal box 31 to the first sedimentation tank 41 for sedimentation treatment. A second sludge conveying pipe 411 is installed at the bottom of the first sedimentation tank 41, and a second sludge conveying pump 412 is installed on the second sludge conveying pipe 411. One end of the second sludge conveying pipe 411 is fixedly connected to the first sedimentation tank 41 and connected to the inside thereof. The other end of the second sludge conveying pipe 411 is fixedly connected to and connected to the sludge dewatering machine 8.

[0050] Reference Fig. 9 A first reflux pump 413 is installed inside the open first sedimentation tank 41, and a first reflux pipe 414 is connected to the first reflux pump 413. The end of the first reflux pipe 414 away from the first reflux pump 413 is fixedly connected and communicated with the water collection tank 110. When supernatant is formed in the first sedimentation tank 41, the first reflux pump 413 can be started to return the supernatant to the front adsorption tank 21, and the mine water is repeatedly purified to achieve the purpose of improving the purification efficiency of the mine water. A third lift pump 415 is also provided inside the first sedimentation tank 41, and a first delivery pipe 416 is connected to the third lift pump 415. The end of the first delivery pipe 416 away from the third lift pump 415 is communicated with the intermediate water tank unit 5.

[0051] Reference Fig. 9A third sludge conveying pipe 421 is installed at the outer bottom of the second sedimentation tank 42, and a third sludge conveying pump 422 is installed on the third sludge conveying pipe 421. One end of the third sludge conveying pipe 421 is fixedly connected to the second sedimentation tank 42 and communicates with the interior thereof, and the other end of the third sludge conveying pipe 421 is fixedly connected to and communicates with the sludge dewatering machine 8. A second reflux pump 423 is installed in the open interior of the second sedimentation tank 42, and a second reflux pipe 424 is connected to the second reflux pump 423. The end of the second reflux pipe 424 away from the second reflux pump 423 is fixedly connected to and communicates with the AO unit tank 7. A fourth lifting pump 425 is also provided inside the second sedimentation tank 42, and a second conveying pipe 426 is connected to the fourth lifting pump 425. The end of the second conveying pipe 426 away from the fourth lifting pump 425 is communicated with the intermediate water tank unit 5.

[0052] Reference Fig. 9 A fourth sludge conveying pipe 431 is installed at the outer bottom, a fourth sludge conveying pump 432 is installed on the fourth sludge conveying pipe 431, one end of the fourth sludge conveying pipe 431 is fixedly connected to the third sedimentation tank 43 and communicates with the interior thereof, and the other end of the fourth sludge conveying pipe 431 is fixedly connected to and communicates with the sludge dewatering machine 8. A third reflux pump 433 is installed in the open interior of the third sedimentation tank 43, a third reflux pipe 434 is connected to the third reflux pump 433, and one end of the third reflux pipe 434 away from the third reflux pump 433 is fixedly connected to and communicates with the front adsorption tank 21. A fourth reflux pump 435 is installed in the open interior of the third sedimentation tank 43, a fourth reflux pipe 436 is connected to the fourth reflux pump 435, and one end of the fourth reflux pipe 436 away from the fourth reflux pump 435 is fixedly connected to and communicates with the rear adsorption tank 25. A fifth lifting pump 437 is further provided inside the second sedimentation tank 42 , and a third delivery pipe 438 is connected to the fifth lifting pump 437 . One end of the third delivery pipe 438 away from the fifth lifting pump 437 is in communication with the clean water tank 10 .

[0053] Reference Fig.10 , a second stirring mechanism 44 is respectively arranged in the first sedimentation tank 41, the second sedimentation tank 42 and the third sedimentation tank, and the second stirring mechanism 44 comprises a horizontal plate 441 arranged at the open end of the sedimentation tank, a third driving motor 442 installed on the upper part of the horizontal plate 441 and the second rotating shaft 443 is perpendicular to the plate surface of the horizontal plate 441, a rotating shaft 443 arranged vertically and the upper end of which is fixed to the output shaft of the third driving motor 442, a plurality of first stirring plates 444 arranged horizontally and one end of which is fixed to the circumference of the second rotating shaft 443, and a second stirring plate 445 installed at the lower end of the second rotating shaft 443. The plate surface of the first stirring plate 444 is parallel to the axial direction of the second rotating shaft 443, and the plurality of first stirring plates 444 are symmetrically arranged in two groups with the axial direction of the second rotating shaft 443 as the midline. The second stirring plate 445 is V-shaped and the V-shaped opening faces the lower end of the second rotating shaft 443, and the outer edge of the second stirring plate 445 fits with the conical inner bottom of the sedimentation tank.

[0054] Reference Figure 3 The intermediate water tank unit 5 includes a first intermediate water tank 51 disposed on the bottom plate 111 and spaced apart from the first sedimentation tank 41, and a second intermediate water tank 52 disposed on the bottom plate 111 and adjacent to the water collection tank 110 and the front adsorption tank 21. One end of the first delivery pipe 416 away from the third lift pump 415 is fixedly connected to and communicates with the first intermediate water tank 51. A first water delivery pump 511 is disposed inside the first intermediate water tank 51. A first water delivery pipe 512 is connected to the first water delivery pump 511. One end of the first water delivery pipe 512 is fixedly connected to the first water delivery pump 511, and the other end thereof is fixedly connected to the ozone catalytic oxidation unit 6. One end of the second delivery pipe 426 away from the fourth lifting pump 425 is fixedly connected to and communicated with the second intermediate water tank 52. A second water delivery pump 521 is arranged inside the second intermediate water tank 52. The second water delivery pipe 522 is connected to the second water delivery pump 521. One end of the second water delivery pipe 522 is fixedly connected to the second water delivery pump 521, and the other end of the second water delivery pipe 522 is fixedly connected to and communicated with the sulfur autotrophic tank 9.

[0055] Combination Fig.11 and Fig.12 The ozone catalytic oxidation unit 6 includes a front ozone catalytic oxidation tank 61 disposed on the bottom plate 111 and located on the side of the first intermediate water tank 51 away from the sedimentation tank, and a rear ozone catalytic oxidation tank 62 disposed on the bottom plate 111 and located on the side of the second intermediate water tank 52 away from the water collection tank 110. The front ozone catalytic oxidation tank 61 and the first intermediate water tank 51 are located on the same side of the length direction of the bottom plate 111, and the rear ozone catalytic oxidation tank 62 and the second intermediate water tank 52 are arranged at intervals. The other end of the first water pipe 512 is fixedly connected and communicated with the front ozone catalytic oxidation tank 61. A first ozone generator 611 is disposed on the front ozone catalytic oxidation tank 61, and a second ozone generator 621 is disposed on the rear ozone catalytic oxidation tank 62. The hydroxyl radicals generated by ozone further remove COD to improve the biodegradability of mine wastewater.

[0056] Reference Fig.11 A third water delivery pump 612 and a third water delivery pipe 613 are also provided inside the front ozone catalytic oxidation tank 61. One end of the third water delivery pipe 613 is fixedly connected to the third water delivery pump 612, and the other end thereof is fixedly connected to and communicated with the AO unit tank 7. A fourth water delivery pump 622 and a fourth water delivery pipe 623 are provided inside the rear ozone catalytic oxidation tank 62. One end of the fourth water delivery pipe 623 is fixedly connected to the fourth water delivery pump 622, and the other end thereof is fixedly connected to and communicated with the rear adsorption tank 25.

[0057] Reference Fig.13AO unit pool 7 is arranged on the bottom plate 111, AO unit pool 7 and the first intermediate water pool 51 are adjacent to the front ozone catalytic oxidation pool 61, and AO unit pool 7 is located on the other side of the length direction of the bottom plate 111. A dissolved oxygen meter 71, a first ORP meter 72, a third submersible mixer 73, an aeration fan 74 and an aeration plate 75 are arranged inside the AO unit pool 7. The third submersible mixer 73 is suspended in the middle of the AO unit pool 7, and the aeration plate 75 is arranged inside the AO unit pool 7. An air inlet pipe is arranged on the top of the aeration plate 75, and the aeration fan 74 is installed on the air inlet pipe and located at the top of the AO unit pool 7. A plurality of exhaust holes are opened along the circumference of the bottom of the aeration plate 75. The mine water treated by the previous steps is combined with the different environmental conditions of the anaerobic zone, the anoxic zone and the aerobic zone, and the biodegradation ability of microorganisms is used to gradually decompose and oxidize organic matter and pollutants such as ammonia and phosphorus in the sewage, thereby achieving the purpose of purifying the mine sewage. The AO unit pool 7 is installed with a third water delivery pump 76 , to which a fifth water delivery pipe 77 is fixedly connected. One end of the fifth water delivery pipe 77 away from the third water delivery pump 76 is fixedly connected to and communicated with the second sedimentation tank 42 .

[0058] Combination Figure 3 and Fig. 9 The sludge dewatering machine 8 is arranged on the bottom plate 111, and the sludge dewatering machine 8 is located between the sedimentation unit 4 and the first intermediate water tank 51 and the AO unit tank 7. The sludge dewatering machine 8 is fixedly connected to the outside with a fifth sludge conveying pipe 81, and the fifth sludge conveying pipe 81 is installed with a fifth sludge conveying pump 82. The sludge dewatering machine 8 dries the sludge, and the dried sludge can be discharged for external transportation through the fifth sludge conveying pump 82 and the fifth sludge conveying pipe 81. The sludge dewatering machine 8 is internally installed with a filtrate recovery pump 83, and the filtrate recovery pump 83 is connected with a filtrate recovery pipe 84, one end of the filtrate recovery pipe 84 is fixedly connected to the filtrate recovery pump 83, and the other end thereof is fixedly connected to the outer bottom of the water collecting tank 110 and communicates with the inside of the water collecting tank 110.

[0059] Reference Fig.14A second ORP meter 91 is provided in the sulfur autotrophic tank 9. The second ORP meter 91 can understand the self-purification ability, biological activity and water quality of the water body by measuring the redox potential (ORP value) of the water body. In the sewage treatment process, the change of the ORP value can be used to judge the activity and efficiency of the biological treatment unit, guide the adjustment of the aeration volume and the dosage of the reagent, and optimize the sewage treatment process. A sulfur autotrophic filler mechanism 92 is provided on the top of the sulfur autotrophic tank 9. The sulfur autotrophic filler mechanism 92 has the same structure as the dosing mechanism. A backwash water pump 93 is provided in the sulfur autotrophic tank 9. A sixth water pipe 94 is connected to the backwash water pump 93. One end of the sixth water pipe 94 is fixedly connected to the backwash water pump 93, and the other end thereof is fixedly connected to the post-ozonation catalytic oxidation tank 62. The backwash water pump 93 provides backwash water for the sulfur autotrophic tank 9 to help the sulfur autotrophic tank 9 restore its filtering capacity. By increasing the amount of fillers in the sulfur autotrophic tank 9, the backwash water pump 93 improves the filtering effect and water production without increasing the flow rate or filtering cycle.

[0060] Reference Figure 1 The skid-mounted device also includes an electric control system 12, which includes a PLC cabinet 121, a frequency conversion cabinet 122, a power distribution cabinet 123, and an instrument box 124, which are sequentially arranged on the bottom plate 111 and electrically connected to each other. The electric control system 12 is used to provide stable power to the lifting pump, motor, dosing mechanism, lifting pump, sludge conveying pump and other components of the skid-mounted device as a whole, and to accurately control the skid-mounted device as a whole, effectively improving the degree of automation of the skid-mounted device and improving the efficiency of mine water treatment.

[0061] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. An integrated skid-mounted device for removing COD and total nitrogen from mine water, characterized by: The invention comprises a water collection unit (1), an adsorption unit (2), a hardness and fluorine removal unit (3), a precipitation unit (4), an intermediate water tank unit (5), an ozone catalytic oxidation unit (6), an AO unit tank (7), a sludge dewatering machine (8) and a sulfur autotrophic tank (9) which are connected in sequence, wherein the water collection unit (1) comprises a water outlet pipe (170) having one end connected to the water collection unit (1); The adsorption unit (2) comprises a front adsorption tank (21) with an open top, a plurality of groups of adsorption components (23) that are movable and arranged in the front adsorption tank (21) at intervals from top to bottom, and a lifting component (24) that is arranged above the front adsorption tank (21) and is used to lift the adsorption component (23); The other end of the water outlet pipe (170) is fixedly connected to and communicates with the front adsorption tank (21), and the connection between the water outlet pipe (170) and the front adsorption tank (21) is located above the bottommost adsorption assembly (23); A second lifting pump (33) is arranged in the open front adsorption tank (21) and above the uppermost adsorption assembly (23); a liquid inlet pipe (32) for discharging the mine water in the front adsorption tank (21) is installed on the second lifting pump (33); the liquid inlet pipe (32) is a flexible pipe; The adsorption assembly (23) comprises a container box (231) with mesh holes at the bottom and an open top, a sponge cushion layer (232) fixedly arranged on the outer wall of the container box (231), activated carbon (233) placed inside the container box (231) and flush with the container opening, a filter cloth (234) laid between the activated carbon (233) and the container opening of the container box (231), and a cover plate (236) detachably connected to the container box (231) and used to cover the container opening, mesh holes being arranged on the surface of the cover plate (236), the length and width of the container box (231) being smaller than the length and width of the container opening of the front adsorption tank (21), the thickness of the sponge cushion layer (232) being larger than the spacing between the container box (231) and the front adsorption tank (21), and the lifting end of the lifting assembly (24) being detachably connected to the cover plate (236).

2. The integrated skid-mounted device for removing COD and total nitrogen from mine water according to claim 1, characterized in that: Handles (237) are installed on opposite sides of the cover plate (236), and an arc section is formed at the middle of the handle (237), and the opening of the arc section faces the cover plate (236); A hook (243) is installed on the lifting end of the lifting component (24), and the hook (243) can be hooked on the arc segment.

3. The integrated skid-mounted device for removing COD and total nitrogen from mine water according to claim 1, characterized in that: A second submersible mixer (22) is arranged at the bottom of the front adsorption tank (21), and the second submersible mixer (22) is located below the bottommost adsorption assembly (23).

4. The integrated skid-mounted device for removing COD and total nitrogen from mine water according to claim 3, characterized in that: One end of the liquid inlet pipe (32) away from the front adsorption tank (21) is connected to a hardness and fluorine removal box (31), and a first stirring mechanism (35) is installed on the hardness and fluorine removal box (31); The first stirring mechanism (35) comprises a door frame (351) with both ends fixed to the top of the hardness and fluorine removal box (31), a first driving component (352) arranged on the door frame (351), a first stirring member (353) rotatably connected to the output end of the first driving member (352), a second driving member (354) installed on the top of the defluorination box and driving the first stirring member (353), and an adjusting member (355) installed on the top of the defluorination box for adjusting the second driving member (354); The first driving component (352) comprises a driving plate (3522) suspended below the portal frame (351) and located between the portal frame (351) and the defluorination box; The first stirring member (353) comprises a first rotating shaft (3531) rotatably arranged on the driving disk (3522) and having an axial direction parallel to the axis of the driving disk (3522), a first stirring wing (3533) and a second stirring wing (3534) installed on the first rotating shaft (3531) from top to bottom along the axis of the first rotating shaft (3531) at intervals; The second driving component (354) comprises a driving sprocket (3542) suspended and installed below the portal frame (351), a driven sprocket (3543) sleeved and fixedly connected to the first rotating shaft (3531) and located below the driving disc (3522), and a chain (3544); The adjusting component (355) adjusts the chain (3544) to always be engaged with the driving sprocket (3542) and the driven sprocket (3543).

5. The integrated skid-mounted device for removing COD and total nitrogen from mine water according to claim 4, characterized in that: The adjusting component (355) comprises a limiting groove (3551) fixedly connected to the top of the defluorination box, a connecting rod (3553) with one end rollingly arranged in the limiting groove (3551) and the other end rotatably connected to the first rotating shaft (3531), and an adjusting sprocket (3555) rotatably mounted on the connecting rod (3553), the chain (3544) is wound around and meshed with the driving sprocket (3542), the driven sprocket (3543) and the adjusting sprocket (3555), and the driving The sprocket (3542), the driven sprocket (3543) and the adjusting sprocket (3555) are always arranged in a triangle. When the distance between the driving sprocket (3542) and the driven sprocket (3543) is the smallest, the adjusting sprocket (3555) is located at an end of the limiting groove (3551) away from the driving disc (3522). When the distance between the driving sprocket (3542) and the driven sprocket (3543) is the largest, the adjusting sprocket (3555) is located at an end of the limiting groove (3551) close to the driving disc (3522).

6. The integrated skid-mounted device for removing COD and total nitrogen from mine water according to claim 4, characterized in that: The first stirring wing (3533) comprises a circular plate (35331) coaxially fixed to the first rotating shaft (3531) and a bending plate (35332) fixed to the edge of the circular plate (35331), wherein a plurality of bending plates (35332) are arranged around the outer diameter of the circular plate (35331), and the plurality of bending plates (35332) are sequentially arranged on both sides of the two plate surfaces of the circular plate (35331), and a through hole (35333) is opened on the plate surface of the circular plate (35331); The second stirring wing (3534) can push the water flow toward the first stirring wing (3533).

7. The integrated skid-mounted device for removing COD and total nitrogen from mine water according to claim 1, characterized in that: The adsorption unit (2) further comprises a post-adsorption tank (25); The precipitation unit (4) is provided with four reflux pumps and reflux pipes connected to the reflux pumps, two of which are connected to the front adsorption tank (21), one of which is connected to the rear adsorption tank (25), and the other is connected to the AO unit tank (7).

8. An integrated skid-mounted device for removing COD and total nitrogen from mine water according to any one of claims 1 to 7, characterized in that: The AO unit pool (7) is provided with a dissolved oxygen meter (71), a first ORP meter (72), a third submersible mixer (73), an aeration fan (74) and an aeration plate (75). The third submersible mixer (73) is suspended in the middle of the AO unit pool (7), the aeration plate (75) is arranged inside the AO unit pool (7), and the aeration fan (74) is installed on the top of the AO unit pool (7) and is connected to the top of the aeration plate (75).

9. An integrated skid-mounted device for removing COD and total nitrogen from mine water according to any one of claims 1 to 7, characterized in that: A second ORP meter (91) is arranged in the sulfur autotrophic tank (9), a sulfur autotrophic filler mechanism (92) is arranged on the top of the sulfur autotrophic tank (9), a backwash water pump (93) is arranged in the sulfur autotrophic tank (9), a sixth water delivery pipe (94) is connected to the backwash water pump (93), one end of the sixth water delivery pipe (94) is fixedly connected to the backwash water pump (93), and the other end of the sixth water delivery pipe (94) is fixedly connected to the backwash water pump (93), and is connected to and communicated with the post-ozonation catalytic oxidation tank (62).

10. An integrated skid-mounted device for removing COD and total nitrogen from mine water according to any one of claims 1 to 7, characterized in that: The water collection unit (1) comprises a water collection tank (110) with an open top, a water inlet pipe (120) one end of which is connected to the interior of the water collection tank (110), a first electromagnetic flowmeter (130) installed on the water inlet pipe (120), a water inlet pump (140) installed on the other end of the water inlet pipe (120), a first submersible mixer (150) suspended inside the water collection tank (110), a first lifting pump (160) arranged inside the water collection tank (110), a water outlet pipe (170) one end of which is fixedly connected to the first lifting pump (160) and the other end of which extends from the water collection tank (110) to the outside, a second electromagnetic flowmeter (180) installed on the water outlet pipe (170), and a liquid level meter (190) installed on the inner wall of the water collection tank (110).

Images