Mine water advanced treatment device

Abstract

The utility model relates to the field of mine water treatment, and discloses a mine water advanced treatment device which comprises a pre-sedimentation adjusting tank, an adjusting lift pump is arranged in the pre-sedimentation adjusting tank, an efficient rotational flow precipitation device is arranged at the right end of the adjusting lift pump, a middle water tank is arranged at the right end of the efficient rotational flow precipitation device, and a water outlet is formed in the middle water tank. A quartz sand filter is arranged at the right end of the middle water tank, an ultrafiltration equipment water inlet tank is arranged at the right end of the quartz sand filter, a water inlet security filter is arranged at the right end of the ultrafiltration equipment water inlet tank, ultrafiltration equipment is arranged at the right end of the water inlet security filter, and an ultrafiltration equipment water producing tank is arranged at the right end of the ultrafiltration equipment; an activated carbon filter is arranged at the right end of the ultrafiltration equipment water producing tank. According to the utility model, by adopting the pre-sedimentation adjusting technology, the effect of adjusting the water quantity and balancing the water quality is achieved, and the pre-sedimentation adjusting device can be used for adjusting the water quantity and balancing the water quality when the water inlet suspended matters sharply rise and exceed the water inlet allowable value of the flocculation sedimentation process under the special conditions of underground working surface change or water sump cleaning and the like.

Description

Technical Field

[0001] The utility model relates to the field of mine water treatment, in particular to a device for deep treatment of mine water. Background Technique

[0002] Coal accounts for more than 70% in China's energy structure. A large amount of wastewater will be discharged during the coal mining process. If it is directly discharged without treatment, it will inevitably cause serious pollution to the environment and cause a large amount of waste of water resources, making it impossible to achieve the goal of circular economy. According to statistics, 40% of the mining areas in China are seriously short of water, which has restricted the development of coal production. Most mining areas are located in mountainous areas, where water resources are even more scarce. Surface water is mostly intermittent rivers, and the flow rates in the dry and flood seasons are quite different. The dilution capacity of the perennial flow is poor, and the sewage discharged into the river causes serious pollution. Therefore, developing, managing, and utilizing coal mine water resources is of great significance to the sustainable development of the coal industry.

[0003] Most of the existing devices for deep treatment of mine water use the flocculation method to achieve purification. However, only using the flocculation process to purify sewage has a poor purification effect, and it is difficult for the device to maintain stable and continuous operation after the suspended solids in the influent increase, and the overall stability of the device is poor. Therefore, a device for deep treatment of mine water is proposed to solve the above problems. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a device for deep treatment of mine water, aiming to improve the problems of "single treatment method and poor overall stability of the existing device for deep treatment of mine water" in the existing technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: A device for deep treatment of mine water, including a pre-sedimentation and regulation tank, an adjustment and lifting pump is arranged inside the pre-sedimentation and regulation tank, a high-efficiency cyclone sedimentation device is arranged at the right end of the adjustment and lifting pump, an intermediate water tank is arranged at the right end of the high-efficiency cyclone sedimentation device, a quartz sand filter is arranged at the right end of the intermediate water tank, an ultrafiltration equipment inlet water tank is arranged at the right end of the quartz sand filter, an inlet security filter is arranged at the right end of the ultrafiltration equipment inlet water tank, an ultrafiltration equipment is arranged at the right end of the inlet security filter, an ultrafiltration equipment product water tank is arranged at the right end of the ultrafiltration equipment, an activated carbon filter is arranged at the right end of the ultrafiltration equipment product water tank, and a disinfection tank is arranged at the right end of the activated carbon filter.

[0006] As a further description of the above technical scheme:

[0007] A PAC dosing device is arranged at the rear end of the high-efficiency cyclone sedimentation device, and a PAM dosing device is arranged at the rear end of the high-efficiency cyclone sedimentation device.

[0008] As a further description of the above technical scheme:

[0009] A sludge pool is provided at the right end of the efficient cyclone sedimentation device. A sludge pump is installed at the right end of the sludge pool. A sludge thickening tank is provided at the rear end of the sludge pump. A filter press feed pump is provided at the front end of the sludge thickening tank. A diaphragm filter press is provided at the front end of the filter press feed pump.

[0010] As a further description of the above technical solution:

[0011] A sludge scraper is provided inside the pre-sedimentation and regulation tank. A sludge discharge pump is provided inside the pre-sedimentation and regulation tank. The sludge discharge pump is in communication with the sludge pool.

[0012] As a further description of the above technical solution:

[0013] A bactericide dosing device is provided at the left end of the inlet security filter. A disinfectant dosing device is provided at the rear end of the disinfection tank.

[0014] As a further description of the above technical solution:

[0015] The quartz sand filter is in communication with the pre-sedimentation and regulation tank, the quartz sand filter is in communication with the activated carbon filter, and the quartz sand filter is in communication with the intermediate water tank.

[0016] As a further description of the above technical solution:

[0017] The right end of the pre-sedimentation and regulation tank is in communication with the ultrafiltration equipment.

[0018] As a further description of the above technical solution:

[0019] An anti-wash inlet security filter is provided at the right end of the ultrafiltration equipment. The right end of the anti-wash inlet security filter is in communication with the quartz sand filter.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, by adopting the pre-sedimentation and regulation technology, it can not only play the role of regulating water volume and balancing water quality, but also play the role of pre-sedimentation when the suspended solids in the inlet water increase sharply due to changes in the underground working face or cleaning of the sump and other special situations, exceeding the allowable value of the inlet water of the flocculation sedimentation process, ensuring the stable operation of the mine water treatment system, and the overall device has good operation stability.

[0022] 2. In the utility model, by adopting the "flocculation sedimentation filtration + advanced treatment process", different treatment processes can be selected according to different water quality requirements in the mine, reducing the operation cost. For the water used for dust suppression in the mine and greening in the mining area, etc., the "flocculation sedimentation filtration process" can be selected; to ensure that the external drainage reaches the third-class surface water, the "flocculation sedimentation filtration + advanced treatment process" can be selected, and the overall device has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of the overall device in the present utility model.

[0024] Legend Explanation:

[0025] 1. Preliminary sedimentation and regulation tank; 2. Sludge discharge pump; 3. Scraper; 4. Regulation and lift pump; 5. High - efficiency cyclone sedimentation device; 6. Sludge tank; 7. Sludge pump; 8. Intermediate water tank; 9. Quartz sand filter; 10. Ultrafiltration equipment inlet water tank; 11. Inlet security filter; 12. Ultrafiltration equipment; 13. Backwash inlet security filter; 14. Activated carbon filter; 15. Ultrafiltration equipment product water tank; 16. Disinfection tank; 17. Sludge thickening tank; 18. Feed pump for diaphragm filter press; 19. Diaphragm filter press; 20. PAC dosing device; 21. PAM dosing device; 22. Bactericide dosing device; 23. Disinfectant dosing device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Refer to Figure 1, an embodiment provided by the present utility model: a deep treatment device for mine water, including a pre-sedimentation and regulation tank 1 for temporarily storing sewage. Inside the pre-sedimentation and regulation tank 1, there is a regulation and lifting pump 4 for conveying the water treated in the pre-sedimentation and regulation tank 1. At the right end of the regulation and lifting pump 4, there is a high-efficiency cyclone sedimentation device 5 for further removing impurities in the water. By adding chemicals, suspended solids in the wastewater can form flocs and precipitate. At the right end of the high-efficiency cyclone sedimentation device 5, there is an intermediate water tank 8 that plays a role of buffering and transfer, which can temporarily store the treated water discharged from the high-efficiency cyclone sedimentation device 5. At the right end of the intermediate water tank 8, there is a quartz sand filter 9 for removing suspended solids and colloids in the water. At the right end of the quartz sand filter 9, there is an ultrafiltration device inlet water tank 10 for temporarily storing water for the ultrafiltration device 12. At the right end of the ultrafiltration device inlet water tank 10, there is an inlet security filter 11 for preliminarily filtering the water entering the ultrafiltration device 12. At the right end of the inlet security filter 11, there is an ultrafiltration device 12 for removing harmful substances such as bacteria, rust, and colloids in the water. At the right end of the ultrafiltration device 12, there is an ultrafiltration device product water tank 15 for storing the product water treated by the ultrafiltration device. At the right end of the ultrafiltration device product water tank 15, there is an activated carbon filter 14 for further adsorbing and removing impurities in the water and improving water quality. At the right end of the activated carbon filter 14, there is a disinfection tank 16 for disinfecting the water body.

[0028] Refer to Figure 1 , at the rear end of the high-efficiency cyclone sedimentation device 5, there is a PAC dosing device 20 for adding coagulant to other devices. At the rear end of the high-efficiency cyclone sedimentation device 5, there is a PAM dosing device 21 for adding flocculant to enhance the coagulation effect. At the right end of the high-efficiency cyclone sedimentation device 5, there is a sludge tank 6 for storing the sludge generated by the pre-sedimentation and regulation tank 1 and the high-efficiency cyclone sedimentation device 5. Inside the sludge tank 6, there is a mud hopper that can be used to gather sludge. At the right end of the sludge tank 6, there is a sludge pump 7 for transferring sludge. At the rear end of the sludge pump 7, there is a sludge thickening tank 17 for compressing sludge. At the front end of the sludge thickening tank 17, there is a filter press feed pump 18 for conveying the thickened sludge to the diaphragm filter press 19. At the front end of the filter press feed pump 18, there is a diaphragm filter press 19 for dehydrating the sludge and reducing the moisture content of the sludge. Inside the pre-sedimentation and regulation tank 1, there is a sludge scraper 3 for driving the sludge into the mud hopper. Inside the pre-sedimentation and regulation tank 1, there is a sludge discharge pump 2 for conveying sludge. The sludge discharge pump 2 is connected to the sludge tank 6, and the sludge discharge pump 2 can be used to convey the sludge into the sludge tank 6.

[0029] Refer to Figure 1, a bactericide dosing device 22 for adding bactericide to other devices is provided at the left end of the influent security filter 11, and a disinfectant dosing device 23 for adding disinfectant to the disinfection tank 16 is provided at the rear end of the disinfection tank 16. The quartz sand filter 9 and the pre-sedimentation adjustment tank 1 are interconnected. The quartz sand filter 9 and the activated carbon filter 14 are interconnected. The quartz sand filter 9 and the intermediate water tank 8 are interconnected. The right end of the pre-sedimentation adjustment tank 1 is interconnected with the ultrafiltration device 12. By connecting the pre-sedimentation adjustment tank 1, the ultrafiltration device 12, the quartz sand filter 9, and the activated carbon filter 14, when it is necessary to clean the ultrafiltration device 12, the quartz sand filter 9, and the activated carbon filter 14, the three can be cleaned by backwashing. The backwashed sewage will directly drain into the pre-sedimentation adjustment tank 1 to wait for secondary filtration. A backwash influent security filter 13 for preliminarily filtering the influent during backwashing is provided at the right end of the ultrafiltration device 12. The right end of the backwash influent security filter 13 is interconnected with the quartz sand filter 9. The backwashed sewage discharged from the activated carbon filter 14 will first pass through the backwash influent security filter 13 and then enter the ultrafiltration device 12.

[0030] Working principle: The main process of this device is designed as follows: The raw mine water is lifted to the pre-sedimentation adjustment tank 1 by the underground lift pump. The wastewater stays in the pre-sedimentation adjustment tank 1 to adjust the water quality and quantity. During the staying process of the wastewater, the suspended solids in the water are preliminarily settled, and the coal slime deposits at the bottom of the tank. A sludge hopper is provided at the water inlet end of the bottom of the pre-sedimentation adjustment tank 1. The coal slime is scraped into the sludge hopper by the sludge scraper 3 provided in the tank and then pumped to the sludge tank 6 by the sludge discharge pump 2. The water discharged from the pre-sedimentation adjustment tank 1 is pumped to the high-efficiency cyclone sedimentation device 5 by the regulating lift pump 4. In order to enhance the sedimentation treatment effect, a coagulant and a coagulant aid are added to the water purification device. The suspended solids in the wastewater form flocs with the medicament through agitation and mixing, and then enter the inclined plate sedimentation. The wastewater further settles in the inclined plate sedimentation tank to remove the suspended solids in the water. The effluent enters the intermediate water tank 8. The sludge separated by sedimentation deposits in the bottom sludge hopper of the water purification device and is regularly discharged into the sludge tank 6 by controlling the sludge discharge valve. The water in the intermediate water tank 8 is lifted to the quartz sand filter 9 by a lift pump to remove suspended solids and colloids, then enters the ultrafiltration device inlet water tank 10, and is further lifted to the ultrafiltration device 12 by a lift pump. After completely filtering out harmful substances such as bacteria, rust, and colloids in the water, it enters the ultrafiltration device product water tank 15. Finally, after being filtered by the activated carbon filter 14, the effluent enters the disinfection tank 16. Sodium hypochlorite is added for disinfection at the water inlet of the disinfection tank 16 to maintain a certain residual chlorine amount in the treated water and prevent the growth of bacteria in the water supply system. The disinfected water meets the standards and is discharged.

[0031] Sludge treatment process flow: There are two units in this device that generate sludge during operation, namely the pre-sedimentation and regulation tank 1 and the high-efficiency cyclone sedimentation device 5. Among them, the sludge in the pre-sedimentation and regulation tank 1 is pumped into the sludge tank 6 by the sludge discharge pump 2, and the sludge from the high-efficiency cyclone sedimentation device 5 is discharged into the sludge tank 6 by the sludge pump 7. The sludge is stored and gravity-concentrated in the sludge tank 6. The concentrated sludge at the bottom of the tank is sent into the diaphragm filter press 19 by the filter press feed pump 18 for dehydration treatment. The dehydrated sludge is sent outdoors through the horizontal and inclined screw conveyors and loaded onto trucks for off-site transportation. The supernatant in the sludge tank 6 and the filtrate from the dehydrator are discharged by gravity into the indoor drainage ditch, and after collection, they are sent back to the pre-sedimentation and regulation tank 1 for re-treatment.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for deep treatment of mine water, comprising a pre-sedimentation and regulation tank (1), characterized in that: An adjustment and lift pump (4) is arranged inside the pre-sedimentation and adjustment tank (1). A high-efficiency cyclone sedimentation device (5) is arranged at the right end of the adjustment and lift pump (4). An intermediate water tank (8) is arranged at the right end of the high-efficiency cyclone sedimentation device (5). A quartz sand filter (9) is arranged at the right end of the intermediate water tank (8). An ultrafiltration equipment inlet water tank (10) is arranged at the right end of the quartz sand filter (9). An inlet security filter (11) is arranged at the right end of the ultrafiltration equipment inlet water tank (10). An ultrafiltration equipment (12) is arranged at the right end of the inlet security filter (11). An ultrafiltration equipment product water tank (15) is arranged at the right end of the ultrafiltration equipment (12). An activated carbon filter (14) is arranged at the right end of the ultrafiltration equipment product water tank (15). A disinfection tank (16) is arranged at the right end of the activated carbon filter (14).

2. The deep treatment device for mine water according to claim 1, characterized in that: A PAC dosing device (20) is arranged at the rear end of the high-efficiency cyclone sedimentation device (5). A PAM dosing device (21) is arranged at the rear end of the high-efficiency cyclone sedimentation device (5).

3. The deep treatment device for mine water according to claim 1, characterized in that: A sludge tank (6) is arranged at the right end of the high-efficiency cyclone sedimentation device (5). A sludge pump (7) is installed at the right end of the sludge tank (6). A sludge thickening tank (17) is arranged at the rear end of the sludge pump (7). A filter press feed pump (18) is arranged at the front end of the sludge thickening tank (17). A diaphragm filter press (19) is arranged at the front end of the filter press feed pump (18).

4. The deep treatment device for mine water according to claim 1, wherein: A sludge scraper (3) is arranged inside the pre-sedimentation and adjustment tank (1). A sludge discharge pump (2) is arranged inside the pre-sedimentation and adjustment tank (1). The sludge discharge pump (2) is communicated with the sludge tank (6).

5. The deep treatment device for mine water according to claim 1, characterized in that: A bactericide dosing device (22) is arranged at the left end of the inlet security filter (11). A disinfectant dosing device (23) is arranged at the rear end of the disinfection tank (16).

6. The deep treatment device for mine water according to claim 1, characterized in that: The quartz sand filter (9) is communicated with the pre-sedimentation and adjustment tank (1). The quartz sand filter (9) is communicated with the activated carbon filter (14). The quartz sand filter (9) is communicated with the intermediate water tank (8).

7. A deep treatment device for mine water according to claim 1, characterized in that: The right end of the pre-sedimentation and adjustment tank (1) is communicated with the ultrafiltration equipment (12).

8. The deep treatment device for mine water according to claim 1, wherein: An anti-wash inlet security filter (13) is arranged at the right end of the ultrafiltration equipment (12). The right end of the anti-wash inlet security filter (13) is communicated with the quartz sand filter (9).

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