Movable mine water direct filtering device

Abstract

The utility model discloses a movable mine water direct filtering device which comprises a box body, a filtering mechanism, a water inlet mechanism, a backwashing mechanism and a chemical washing mechanism, the box body is a container box body and is used for providing a working space for the whole device; a filtering mechanism is arranged in one end of the box body along the length direction, and a water inlet mechanism, a backwashing mechanism and a medicine washing mechanism are respectively arranged at the other end of the box body; one or more filtering mechanisms are arranged in the width direction of the box body; the filtering mechanism comprises a membrane box, a membrane module frame and a sludge conical hopper; the membrane box is box-shaped and is used for providing a working space for the filtering mechanism; a membrane group frame is arranged in the membrane box, and the bottom end of the membrane box is fixedly communicated with a sludge conical hopper; a plurality of sludge conical hoppers are uniformly arranged on the same membrane box along the length direction of the box body; and an electric control box is arranged on the box body. The movable mine water direct filtering device is good in filtering effect, long in service life of the filtering membrane, simple and practical in structure and low in cost.

Description

Technical Field

[0001] The present application relates to the technical field of mine water filtration, and in particular to a movable mine water direct filtration device. Background Art

[0002] Mine water has a high content of suspended solids, small particle size, light specific gravity, slow sedimentation speed, poor coagulation effect, and also contains organic pollutants such as waste oil and emulsified oil. Mine water treatment processes generally use coagulation, sedimentation, and filtration. For some water bodies with special requirements, deep treatment processes such as ultrafiltration and reverse osmosis are also required.

[0003] For high-turbidity mine water, if the traditional ultrafiltration treatment process is adopted, the ultrafiltration front end needs to be equipped with a coagulation sedimentation and filtration process, the process flow is long, and the treatment efficiency is low. The coagulation sedimentation tank occupies a large area, has a long construction period, and has high investment and operating costs. Conventional PVDF membranes have poor rigidity and are not wear-resistant, especially in mine water with many coal powder particles and hard texture, which causes more serious wear on the membrane. Therefore, it is of great significance to develop a direct filtration device suitable for high-turbidity mine water. In addition, for some open-pit coal mines, as the mining face continues to advance, the mine outflow water continues to increase. If a sewage treatment station is built at a fixed location, the sewage delivery pipeline needs to be continuously extended, and the overall investment will be greatly increased. If a movable mine water direct filtration device is developed, the device can be continuously moved with the mining face, which can greatly reduce the length of the sewage delivery pipeline, that is, reduce the overall investment, and can also reduce the operation and maintenance workload, which has great market value. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a movable mine water direct filtration device with good filtration effect, long filtration membrane life, simple and practical structure, and low cost.

[0005] The present application provides a movable mine water direct filtration device, comprising a box, a filtration mechanism, a water inlet mechanism, a backwash mechanism and a drug washing mechanism;

[0006] The box body is set as a container box body, which is used to provide a working space for the entire device; a filtering mechanism is installed inside one end of the box body along the length direction, and a water inlet mechanism, a backwash mechanism and a drug washing mechanism are installed at the other end;

[0007] One or more filter mechanisms are arranged along the width direction of the box body; the filter mechanism includes a membrane box, a membrane group frame and a sludge cone bucket; the membrane box is arranged in a box shape to provide a working space for the filter mechanism; a membrane group frame is installed inside the membrane box, and a sludge cone bucket is fixedly connected to the bottom end; multiple sludge cone buckets are evenly arranged on the same membrane box along the length direction of the box body;

[0008] An electric control box is installed on the box body.

[0009] Preferably, the water inlet mechanism includes a water inlet pump, a water inlet pipe and a regulating tank; the water inlet pump is installed inside the box; the water inlet pump is adjustably connected to the membrane box through the water inlet pipe; a regulating tank, a coal sludge tank and a clear water tank are dug in the mine water treatment site; the water inlet pump is adjustably connected to the regulating tank through a pipeline; the sludge cone hopper is adjustably connected to the coal sludge tank through a sludge discharge pipe.

[0010] Preferably, the membrane module frame is detachably provided with a membrane module; a plurality of membrane modules are evenly provided on the same membrane module frame along the length direction of the membrane module frame;

[0011] The membrane group includes an upper water collecting pipe, a lower water collecting pipe and membrane wires; the upper water collecting pipe and the lower water collecting pipe are respectively arranged at the top and bottom of the membrane group along the width direction of the membrane group frame; membrane wires are fixedly arranged between the upper water collecting pipe and the corresponding lower water collecting pipe; the top and bottom ends of the membrane wires are respectively fixedly connected with the corresponding upper water collecting pipe and the corresponding lower water collecting pipe; the membrane wires on the same membrane group are evenly arranged with multiple

[0012] A water outlet pipe is fixedly arranged on the membrane box; the upper water collecting pipe and the lower water collecting pipe are both adjustably connected to the outside through the corresponding water outlet pipes.

[0013] Preferably, the backwash mechanism comprises a fan, a vent pipe, an aeration head, a backwash water pump, a backwash water inlet pipe and a backwash water outlet pipe; the fan and the backwash water pump are installed inside the box; a vent pipe is installed between the membrane group frame and the sludge cone bucket on the same membrane box; a plurality of aeration heads are arranged on the vent pipe; the vent pipe is adjustable and connected to the fan;

[0014] The backwash water pump is adjustably connected to the clean water tank through a pipeline; the backwash water pump is adjustably connected to the water outlet pipe through the backwash water inlet pipe; the membrane box is adjustably connected with the backwash water outlet pipe.

[0015] Preferably, the drug washing mechanism includes a drug dosing pump, a drug dosing box and a drug dosing pipe; the drug dosing pump and the drug dosing box are installed inside the box; one end of the drug dosing pump is adjustably connected to the drug dosing box, and the other end is adjustably connected to the water inlet pipe through the drug dosing pipe.

[0016] Preferably, the water inlet pump, the fan, the backwash water pump and the dosing pump are all electrically connected to the electric control box.

[0017] Compared with the prior art, the beneficial effects of this application are:

[0018] (1) Mine water with high suspended matter can be directly treated by direct filtration device, without the need to design coagulation, sedimentation and other process stages. The process is simple, the treatment efficiency is high, and the investment and operation costs are low;

[0019] (2) The box adopts a container-type design, and the whole equipment can be moved. When it is actually used, it only needs to be connected to the external pipeline. The installation is simple and convenient, and the construction period is short;

[0020] (3) Conventional ultrafiltration membranes require cross-flow design to prevent membrane filaments from being blocked by dirt. The cross-flow water continuously flushes the membrane filament surface to prevent particles from accumulating on the membrane surface. The cross-flow rate is designed to be 50% or even 100%. However, the direct filtration device is designed without cross-flow, which greatly saves energy consumption and improves water treatment efficiency.

[0021] (4) Conventional ultrafiltration membranes are generally equipped with aeration during operation, and the aeration device is arranged at the bottom of the membrane group frame. During operation, the aeration device continuously flushes the membrane fibers with bubbles to prevent suspended particles from clogging the membrane pores. This direct filtration device only aerates during air washing, with a short aeration time and low energy consumption;

[0022] (5) The filtration mechanism adopts a composite PVDF membrane, a double-layer membrane design with a large pore size and high flux in the inner membrane, and a wear-resistant outer membrane that can resist wear from high suspended matter and has a long service life.

[0023] It should be understood that the contents described in the Summary of the Invention are not intended to limit the key or important features of the embodiments of the present application, nor are they intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0025] Figure 1 A schematic structural diagram of a movable mine water direct filtration device provided in an embodiment of the present application;

[0026] Figure 2 A schematic structural diagram of a movable mine water direct filtration device from another angle provided in an embodiment of the present application;

[0027] Figure 3 A schematic structural diagram of a membrane group of a movable mine water direct filtration device provided in an embodiment of the present application.

[0028] Numbers in the figure: 1, box body; 2, filtering mechanism; 3, water inlet mechanism; 4, backwashing mechanism; 5, chemical washing mechanism;

[0029] 11. Electric control box; 12. Regulating tank; 13. Coal slime tank; 14. Clean water tank; 15. Water outlet pipe;

[0030] 21. Membrane box; 22. Membrane module frame; 23. Sludge cone bucket; 24. Sludge discharge pipe; 25. Upper water collecting pipe; 26. Lower water collecting pipe; 27. Membrane wire; 28. Membrane module

[0031] 31. Water inlet pump; 32. Water inlet pipe;

[0032] 41. Fan; 42. Ventilation pipe; 43. Aeration head; 44. Backwash water pump; 45. Backwash water inlet pipe; 46. Backwash water outlet pipe;

[0033] 51. Dosing pump; 52. Dosing box; 53. Dosing pipe. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant application, rather than to limit the application. It is also necessary to explain that, for ease of description, only the parts related to the application are shown in the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] Please refer to Figure 1 to Figure 3 , the embodiment of the present application provides a movable mine water direct filtration device, including a box 1, a filtration mechanism 2, a water inlet mechanism 3, a backwash mechanism 4 and a drug washing mechanism 5;

[0037] The box body 1 is set as a container box body, which is used to provide a working space for the overall device; a filtering mechanism 2 is installed inside one end of the box body 1 along the length direction, and a water inlet mechanism 3, a backwash mechanism 4 and a drug washing mechanism 5 are installed at the other end;

[0038] One or more filter mechanisms 2 are provided along the width direction of the box body 1; the filter mechanism 2 comprises a membrane box 21, a membrane group frame 22 and a sludge cone hopper 23; the membrane box 21 is provided in a box shape to provide a working space for the filter mechanism 2; the membrane group frame 22 is installed inside the membrane box 21, and the bottom end is fixedly connected to the sludge cone hopper 23; multiple sludge cone hoppers 23 on the same membrane box 21 are evenly provided along the length direction of the box body 1;

[0039] An electric control box 11 is installed on the box body 1 .

[0040] In this embodiment, the box body 1 adopts a container-type design, and the entire equipment can be moved, which is convenient for shipping and lifting. When actually used, it only needs to be connected to external pipelines. The installation is simple and convenient, and the construction period is short.

[0041] In a preferred embodiment, the water inlet mechanism 3 includes a water inlet pump 31, a water inlet pipe 32 and a regulating tank 12; the water inlet pump 31 is installed inside the box body 1; the water inlet pump 31 is adjustably connected to the membrane box 21 through the water inlet pipe 32; the mine water treatment site is dug with a regulating tank 12, a coal slime tank 13 and a clear water tank 14; the water inlet pump 31 is adjustably connected to the regulating tank 12 through a pipeline; the sludge cone hopper 23 is adjustably connected to the coal slime tank 13 through a sludge discharge pipe 24.

[0042] Please refer to Figure 1 to Figure 3 In this embodiment, the mine sewage first enters the regulating tank 12 for buffering, and then the water in the regulating tank 12 is pressurized by the water inlet pump 31 and enters the membrane box 21 through the water inlet pipe 32. The filter mechanism 2 adopts an external pressure water inlet method, and the water inlet pressure is 0.1-0.2MPa. The water inlet pump 31 is adjustable to communicate with the membrane box 21 through the water inlet pipe 32, and the dosing pump 51 is adjustable to communicate with the water inlet pipe 32 through the dosing pipe 53. The adjustable communication in this embodiment is realized by a three-way valve or other controllable valves.

[0043] In a preferred embodiment, a membrane module 28 is detachably provided on the membrane module frame 22; a plurality of membrane modules 28 are evenly provided on the same membrane module frame 22 along the length direction of the membrane module frame 22;

[0044] The membrane group 28 includes an upper water collecting pipe 25, a lower water collecting pipe 26 and a membrane wire 27; the upper water collecting pipe 25 and the lower water collecting pipe 26 are respectively arranged at the top and bottom of the membrane group 28 along the width direction of the membrane group frame 22; the membrane wire 27 is fixedly arranged between the upper water collecting pipe 25 and the corresponding lower water collecting pipe 26; the top and bottom ends of the membrane wire 27 are respectively fixedly connected to the corresponding upper water collecting pipe 25 and the corresponding lower water collecting pipe 26; the membrane wire 27 on the same membrane group 28 is evenly arranged with a plurality of

[0045] The membrane box 21 is fixedly provided with a water outlet pipe 15 ; the upper water collecting pipe 25 and the lower water collecting pipe 26 are both adjustably connected to the outside through the corresponding water outlet pipe 15 .

[0046] Please refer to Figure 1 to Figure 3 In this embodiment, the filter mechanism 2 adopts the membrane filtration method, and the membrane filament adopts a patented product: a composite PVDF membrane (patent number CN202310801796X), which adopts a double-layer membrane design, the inner membrane is made of ultra-high molecular weight polyethylene, polyvinylidene fluoride, sodium montmorillonite, etc. mixed in proportion, and the outer membrane is made of ultra-high molecular weight polyethylene, polyvinylidene fluoride, TiO2, etc. in proportion. The composite membrane has the characteristics of large flux of the inner membrane, strong rigidity and wear resistance of the outer membrane, and is particularly suitable for direct filtration of high turbidity water. The porosity of the membrane is about 85%, the average pore size is 0.01~0.2um, and the pure water flux reaches 400L / (m2.h), which has the characteristics of high flux.

[0047] The membrane module frame 22 is a rectangular structure. A plurality of membrane modules 28 in the membrane module frame 22 are arranged in parallel and adopt a curtain-type design. The upper and lower ends of the membrane wires 27 are respectively connected to the upper and lower water collecting pipes.

[0048] The sewage in the regulating tank 12 is pressurized by the water inlet pump 31 and enters the membrane box 21 through the water inlet pipe 32. The water inlet pressure is 0.1-0.2MPa. Under the action of pressure, the water enters the hollow position of the membrane fiber 27 from the outside of the membrane fiber, and most of the suspended matter in the water is intercepted on the outside of the PVDF membrane. The filtered and purified water passes through the membrane fiber 27, is collected through the upper and lower water collecting pipes, and is finally discharged from the membrane box 21 through the outlet pipe 15, while the large particles in the wastewater slide along the inner wall of the membrane box 21 into the sludge cone hopper 23. The cone angle of the sludge cone hopper 23 is 50-70°. The sludge deposited in the sludge cone hopper 23 is discharged to the coal sludge pool 13 through the sludge discharge pipe 24. Finally, the filtered water is transported to the clean water tank 14 through the outlet pipe 15 for external discharge or reuse.

[0049] In a preferred embodiment, the backwash mechanism 4 includes a fan 41, a vent pipe 42, an aeration head 43, a backwash water pump 44, a backwash water inlet pipe 45 and a backwash water outlet pipe 46; the fan 41 and the backwash water pump 44 are installed inside the box body 1; a vent pipe 42 is installed between the membrane group frame 22 and the sludge cone bucket 23 on the same membrane box 21; a plurality of aeration heads 43 are arranged on the vent pipe 42; the vent pipe 42 is adjustable and connected to the fan 41;

[0050] The backwash water pump 44 is adjustably connected to the clean water tank 14 through a pipeline; the backwash water pump 44 is adjustably connected to the outlet pipe 15 through a backwash water inlet pipe 45; and the membrane box 21 is adjustably connected with a backwash water outlet pipe 46.

[0051] Please refer to Figure 1 to Figure 3 In this embodiment, after the filter mechanism 2 runs for one cycle, the membrane group 28 needs to be backwashed. The backwashing adopts a combination of air washing and water washing. The operation cycle is 30 to 45 minutes. The specific time is adjusted according to the actual situation of the project. Taking the operation cycle of 30 minutes as an example, the operation time is 27 minutes and the backwash time is 3 minutes (air washing 0.5 minutes, water washing 2.5 minutes):

[0052] Before backwashing, it is necessary to close the connection between the water inlet pump 31 and the membrane box 21. First, air washing is performed. The air source is provided by the fan 41. The air is transported to the aeration head 43 of the membrane box 21 through the ventilation pipe 42 and finally released into the water body. The aeration head 43 is arranged in a rectangular shape at the lower end of the membrane assembly frame 22. The air washing intensity is ≤0.1m3 / m2.h. Under the flushing action of the bubbles, some particles attached to the outer surface of the membrane filaments 27 are washed away. After 0.5 minutes, the air wash is finished, the fan 41 is turned off, and the water wash begins. The clean water in the clean water tank 14 is pressurized by the backwash water pump 44. The backwash water inlet pipe 45 is connected to the outlet pipe 15 through a three-way valve. When the backwash water pump 44 is turned on, the backwash clean water enters the membrane filament 27 in the membrane assembly frame 22 through the backwash water inlet pipe 45 and the outlet pipe 15 through the valve switch. The backwash clean water passes through the membrane filament 27 from the inside to the outside. Under the impact of the backwash clean water, the suspended matter blocked in the membrane pores is washed away, and the flux of the membrane filament 27 is restored. The strength of the backwash clean water is ≤0.1m3 / m2.h, and the water inlet pressure is <0.2mpa. The water after backwashing is discharged to the regulating tank 12 through the backwash outlet pipe 46 for the next round of purification treatment.

[0053] In a preferred embodiment, the drug washing mechanism 5 includes a dosing pump 51, a dosing box 52 and a dosing pipe 53; the dosing pump 51 and the dosing box 52 are installed inside the box body 1; one end of the dosing pump 51 is adjustably connected to the dosing box 52, and the other end is adjustably connected to the water inlet pipe 32 through the dosing pipe 53.

[0054] Please refer to Figure 1 to Figure 3 In this embodiment, after the filter mechanism 2 has been running for a period of time, the membrane fibers 27 are seriously blocked by dirt, and the membrane fibers 27 need to be chemically cleaned with sodium hypochlorite or sodium hydroxide. During chemical cleaning: the chemical agent in the dosing box 52 is transported to the water inlet pipe 32 through the dosing pipe 53 by the dosing pump 51, and then transported to the membrane box 21 through the water inlet pipe 32. The dirt is softened by soaking in the chemical agent, and the water after the chemical agent cleaning is discharged through the backwash outlet pipe 46.

[0055] In a preferred embodiment, the water inlet pump 31 , the fan 41 , the backwash water pump 44 and the dosing pump 51 are all electrically connected to the electric control box 11 .

[0056] Please refer to Figure 1 to Figure 3 In this embodiment, a control chip is provided in the electric control box 11, on which a control program is written and recorded, which is used to control the working time, working mode, etc. of the water inlet pump 31, the fan 41, the backwash water pump 44 and the dosing pump 51, and can also control some electric control valves. It is equipped with a human-machine interactive interface for easy operation.

[0057] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A movable mine water direct filtration device, characterized in that: It includes a box body, a filtering mechanism, a water inlet mechanism, a backwashing mechanism and a drug washing mechanism; The box body is configured as a container box body, which is used to provide a working space for the overall device; the filtering mechanism is installed inside one end of the box body along the length direction, and the water inlet mechanism, the backwash mechanism and the drug washing mechanism are installed respectively at the other end; The filtering mechanism is provided with one or more along the width direction of the box body; the filtering mechanism comprises a membrane box, a membrane group frame and a sludge cone bucket; the membrane box is provided in a box shape to provide a working space for the filtering mechanism; the membrane group frame is installed inside the membrane box, and the bottom end is fixedly connected with the sludge cone bucket; the sludge cone bucket on the same membrane box is evenly provided with multiple sludge cone buckets along the length direction of the box body; An electric control box is installed on the box body.

2. The movable mine water direct filtration device according to claim 1 is characterized in that: The water inlet mechanism includes a water inlet pump, a water inlet pipe and a regulating tank; the water inlet pump is installed inside the box; the water inlet pump is adjustably connected to the membrane box through the water inlet pipe; the regulating tank, coal slime tank and clear water tank are excavated in the mine water treatment site; the water inlet pump is adjustably connected to the regulating tank through a pipeline; the sludge cone hopper is adjustably connected to the coal slime tank through a sludge discharge pipe.

3. The movable mine water direct filtration device according to claim 2 is characterized in that: The membrane group frame is detachably provided with a membrane group; a plurality of membrane groups are evenly provided on the same membrane group frame along the length direction of the membrane group frame; The membrane group includes an upper water collecting pipe, a lower water collecting pipe and membrane threads; the upper water collecting pipe and the lower water collecting pipe are respectively arranged at the top and bottom ends of the membrane group along the width direction of the membrane group frame; the membrane threads are fixedly arranged between the upper water collecting pipe and the corresponding lower water collecting pipe; the top and bottom ends of the membrane threads are respectively fixedly connected with the corresponding upper water collecting pipe and the corresponding lower water collecting pipe; the membrane threads on the same membrane group are evenly arranged with multiple A water outlet pipe is fixedly arranged on the membrane box; the upper water collecting pipe and the lower water collecting pipe are both adjustably connected to the outside through the corresponding water outlet pipe.

4. The movable mine water direct filtration device according to claim 3 is characterized in that: The backwash mechanism comprises a fan, a vent pipe, an aeration head, a backwash water pump, a backwash water inlet pipe and a backwash water outlet pipe; the fan and the backwash water pump are installed inside the box; the vent pipe is installed between the membrane group frame and the sludge cone bucket on the same membrane box; a plurality of aeration heads are arranged on the vent pipe; the vent pipe is adjustable to be connected with the fan; The backwash water pump is adjustably connected to the clean water tank through a pipeline; the backwash water pump is adjustably connected to the outlet pipe through the backwash water inlet pipe; the membrane box is adjustably connected to the backwash outlet pipe.

5. The movable mine water direct filtration device according to claim 4 is characterized in that: The drug washing mechanism includes a drug dosing pump, a drug dosing box and a drug dosing pipe; the drug dosing pump and the drug dosing box are installed inside the box body; one end of the drug dosing pump is adjustably connected to the drug dosing box, and the other end is adjustably connected to the water inlet pipe through the drug dosing pipe.

6. The movable mine water direct filtration device according to claim 5 is characterized in that: The water inlet pump, the fan, the backwash water pump and the dosing pump are all electrically connected to the electric control box.

Images