High-ammonia-nitrogen wastewater treatment device based on ammonia-nitrogen separation membrane-reverse osmosis membrane technology

Abstract

The invention provides a high-ammonia-nitrogen wastewater treatment device based on an ammonia-nitrogen separation membrane-reverse osmosis membrane technology. The high-ammonia-nitrogen wastewater treatment device based on the ammonia-nitrogen separation membrane-reverse osmosis membrane technology comprises at least two water storage tanks, a filter cartridge, a filter screen, a connecting plate and an adjusting mechanism, one end of the filter cartridge is connected with the inner wall of the water storage tank, one end of the filter screen is hinged to the inner wall of the water storage tank, the filter screen is attached to one end of the filter cartridge, and the resin particles are located in a cavity formed by the filter cartridge and the filter screen; the connecting plate is connected with the inner wall of the water storage tank, the water storage tank is provided with a communication port for moving out resin particles, the adjusting mechanism is arranged on the water storage tank, the filter screen is connected with the adjusting mechanism, and the adjusting mechanism drives the filter screen to swing to be attached to one side of the connecting plate, so that the resin particles are moved out of the cavity. The ammonia nitrogen in the high-ammonia-nitrogen wastewater can be efficiently removed, and the treatment efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of ammonia nitrogen wastewater treatment, and in particular to a high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology. Background Art

[0002] Ammonia nitrogen wastewater mainly comes from industries such as fertilizer, coking, petrochemical, pharmaceutical, food, and landfill. If these wastewaters are discharged directly into water bodies without treatment, they will not only cause eutrophication of water bodies and cause black and smelly water bodies, but will even be toxic to people and organisms. Therefore, it is necessary to effectively treat ammonia nitrogen wastewater. The commonly used means of treating high ammonia nitrogen wastewater is mainly biological methods. However, for wastewater with low C / N ratio and high ammonia nitrogen, due to its serious lack of carbon source and unbalanced nutrient ratio, it has a greater inhibitory effect on biological treatment and is not suitable for direct biological treatment. In this case, an ammonia nitrogen separation membrane system is usually used for treatment.

[0003] However, when using an ammonia nitrogen separation membrane system to treat high-ammonia nitrogen wastewater, heavy metal ions in the wastewater may accumulate on the membrane surface or inside the membrane pores when adjusting the pH value, resulting in membrane contamination, which will reduce the flux and separation efficiency of the membrane and affect the efficiency of the device. Therefore, high-ammonia nitrogen wastewater is usually first transported to a small water storage tank, and the resin in the water storage tank is used to remove and adsorb heavy metal ions for a certain period of time, and then the ammonia nitrogen separation membrane system is used for subsequent treatment, which is conducive to the recycling of high-ammonia nitrogen wastewater.

[0004] Although the resin can remove heavy metal ions in ammonia nitrogen wastewater to a certain extent, when the resin adsorption is saturated, the resin in the water tank needs to be replaced to continue to adsorb and filter high ammonia nitrogen wastewater. When treating the failed resin, it is usually necessary to pause the device and take out the resin from the water tank. This process will take a long time and cannot maintain continuous filtration and adsorption of wastewater, thus delaying the treatment of wastewater, affecting the use of the device, and reducing work efficiency. Summary of the invention

[0005] In order to improve the problem that after the resin for adsorbing heavy metal ions in wastewater is saturated with adsorption, the replacement procedure is cumbersome and time-consuming, and leads to interruption of wastewater treatment and reduced efficiency of the device, the present application provides a high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology.

[0006] The present application provides a high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology, which adopts the following technical solution: A high-ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology includes: at least two water storage tanks, a filter cartridge, a filter screen, a connecting plate and a regulating mechanism; One end of the filter cartridge is connected to the inner wall of the water tank, one end of the filter screen is hinged to the inner wall of the water tank, the filter screen is fitted to one end of the filter cartridge, and the resin particles are located in a cavity formed by the filter cartridge and the filter screen; The connecting plate is connected to the inner wall of the water tank, a connecting port for removing resin particles is provided on the water tank, the adjusting mechanism is arranged on the water tank, the filter is connected to the adjusting mechanism, and the adjusting mechanism drives the filter to swing until it fits with one side of the connecting plate, thereby removing the resin particles from the cavity.

[0007] By adopting the above technical solution, the resin particles can be easily replaced during the treatment of high-ammonia nitrogen wastewater. By setting up the filter cartridge, filter screen and adjustment mechanism, the saturated resin particles can be quickly removed from the water storage tank without affecting the continuity of wastewater treatment, and other water storage tanks can continue to treat unfiltered wastewater, ensuring the continuous and efficient operation of the device. It effectively reduces the time for replacing resin particles, improves the overall treatment efficiency, and reduces maintenance costs.

[0008] Preferably, it also includes a transmission pipe, which is connected to the filter screen and is used to transport wastewater between water storage tanks.

[0009] By adopting the above technical solution, the transmission pipe is set up so that when the resin particles need to be replaced, the unfiltered wastewater can be transported to other water storage tanks through the transmission pipe for continued filtration and adsorption, thereby ensuring the continuous operation of the entire device, reducing the interruption of wastewater treatment due to replacement of resin particles, and improving the continuity and efficiency of wastewater treatment.

[0010] Preferably, the height of the inner bottom wall of the water tank close to the connecting plate is lower than the height of the inner bottom wall away from the connecting plate.

[0011] By adopting the above technical solution, the height of the bottom wall of the water tank close to the connecting plate is lower than the height of the bottom wall away from the connecting plate. By designing the height difference of the bottom wall of the water tank, the unfiltered wastewater can be more concentrated in one place, which is conducive to the delivery pipe to more comprehensively transport the wastewater to other water tanks for further treatment, thereby improving the continuous treatment capacity of the wastewater during the replacement of resin particles and further improving the treatment capacity of the device.

[0012] Preferably, the filter cylinder comprises an inner cylinder and an outer cylinder, the inner cylinder comprises a plurality of baffles, and the baffles are vertically slidably connected to the outer cylinder; and further comprises a pushing member for pushing the baffles upward.

[0013] By adopting the above technical solution, the baffle in the inner cylinder is vertically slidably connected to the outer cylinder, so that the baffle can move, thereby achieving effective control of the resin particles in the filter cylinder, and can further reduce the resin particles from moving out of the filter cylinder with the water flow when the filter screen swings, so that the resin particles fall into the water storage tank and affect the subsequent treatment links, effectively improving the efficiency and quality of wastewater treatment. At the same time, the setting of the pusher further ensures the stable upward movement of the baffle, which is convenient for removing the resin particles from the filter cylinder when needed, so that the resin particles move along the filter screen to the connecting port, improving the automation and reliability of the equipment.

[0014] Preferably, the pushing member includes a first push plate and a second push plate; the first push plate is arranged at the bottom of the baffle and extends to the side wall of the water tank; a box door is connected to the water tank, the second push plate is arranged on the box door, and the first push plate is located above the second push plate. When the filter screen swings downward to fit with one side of the connecting plate, the box door moves up, thereby driving the baffle to move up through the first push plate and the second push plate.

[0015] By adopting the above technical solution, when the filter screen swings downward to fit with one side of the connecting plate, the upward movement of the box door can drive the baffle plate to move upward through the first push plate and the second push plate, so that when needed, the resin particles can be moved out of the filter cartridge through the upward movement of the baffle plate, and the resin particles are then moved along the filter screen to the connecting port.

[0016] Preferably, the bottom of the baffle is a curved surface.

[0017] By adopting the above technical solution, the curved surface design can effectively reduce the resistance when the baffle moves up and down, making the baffle move more smoothly and extending the service life of the equipment.

[0018] Preferably, it also includes a transmission mechanism, which includes a first rack, a second rack and a gear, the first rack is connected to the first push plate, the second rack is connected to the inner wall of the water tank, the gear is rotatably connected to the second push plate, and the gear is located between the first rack and the second rack.

[0019] By adopting the above technical solution, when the filter screen swings downward to fit with one side of the connecting plate, the box door moves upward to drive the second push plate to move, and then the first push plate drives the baffle to move upward synchronously through the transmission between the gear and the rack. While effectively ensuring the stability and reliability of the baffle movement, it also further ensures that the baffle can move to a suitable height, so that when the resin is transported through the filter screen, the connecting port is completely unobstructed by the baffle, and the resin transportation is more convenient and faster.

[0020] Preferably, it also includes a delivery pipeline, which is connected to the water storage tank and has a valve body.

[0021] By adopting the above technical solution, the delivery pipeline is connected to the water storage tank, and a valve body is provided on the delivery pipeline, which can further realize the control and delivery of high-ammonia nitrogen wastewater, thereby improving the flexibility and efficiency of wastewater treatment. The setting of the valve body allows the operator to adjust the flow and pressure of the wastewater according to actual needs.

[0022] Preferably, it also includes a reverse osmosis system, which includes a first filter, a second filter, a reverse osmosis mechanism and a connecting box. The first filter, the second filter, the connecting box and the reverse osmosis mechanism are connected in sequence through pipelines. The first filter is used to remove large particle impurities and colloids, the second filter is used to filter out impurities larger than 10μm, and the reverse osmosis mechanism is used to concentrate high ammonia nitrogen wastewater.

[0023] By adopting the above technical solution, effective pretreatment and concentration of high-ammonia nitrogen wastewater is achieved. Specifically, the first filter can remove most of the large particle impurities and some colloids in the water to ensure the initial purification of the water quality; the second filter can filter out tiny impurities larger than 10μm to further improve the purity of the water quality; the reverse osmosis mechanism concentrates the high-ammonia nitrogen wastewater to obtain pure water and concentrated wastewater, greatly reducing the cost of subsequent ammonia nitrogen separation. This series of treatment steps not only improves the treatment efficiency, but also effectively reduces the operation and maintenance costs of the entire system.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. The resin particles in the water tank can be quickly replaced through the adjustment mechanism, which effectively reduces the complexity of the operating steps when replacing the resin, further saves time, and can maintain the treatment of wastewater during the replacement, which also effectively solves the problem of interruption of wastewater treatment, thereby ensuring the continuity and stability of wastewater treatment; 2. The reverse osmosis system pre-treats high-ammonia nitrogen wastewater, and the generated pure water can be directly reused, reducing the waste of water resources. At the same time, the generated concentrated wastewater is treated by the subsequent ammonia nitrogen separation membrane system, further improving the comprehensive benefits of wastewater treatment; 3. The combined use of the reverse osmosis pre-concentration separation part and the ammonia nitrogen separation membrane system realizes the effective treatment and resource recovery of high ammonia nitrogen wastewater, effectively reduces the cost of ammonia nitrogen separation, and improves economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the principle structure of Example 1 of the present application; Figure 2 It is a schematic diagram of the three-dimensional structure of the water storage tank in Example 2 of the present application; Figure 3 is a schematic cross-sectional structure diagram of a water storage tank in Example 2 of the present application; Figure 4 It is a partial structural schematic diagram of the adjustment mechanism of Example 2 of the present application; Figure 5 This is a schematic diagram of the connection structure of the pusher in Example 3 of the present application; Figure 6 is a schematic cross-sectional structure diagram of a water storage tank in Example 3 of the present application; Figure 7 It is a schematic diagram of the partial structure of Example 3 of the present application.

[0026] Explanation of the reference numerals: 1. reverse osmosis system; 101. first filter; 102. second filter; 103. reverse osmosis mechanism; 104. connecting box; 2. cleaning mechanism; 3. pure water reuse box; 4. filter cylinder; 401. outer cylinder; 402. inner cylinder; 4021. baffle; 5. pusher; 501. first push plate; 502. second push plate; 6. transmission mechanism; 601. first rack; 602. second rack; 603. gear; 7. connecting plate; 8. transmission pipe; 9. adjustment mechanism; 901. drive motor; 902. rotating rod; 903. winding rope; 904. connecting member; 10. water storage tank; 11. metering and dosing system; 12. ammonia nitrogen separation membrane system; 13. dilute acid storage standby box; 14. dilute acid circulation box; 15. ammonium sulfate storage tank; 16. filter screen; 17. resin particles; 18. feed pipe. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-7 This application is described in further detail.

[0028] Embodiment 1: Example 1 of the present application provides a high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology.

[0029] refer to Figure 1 and Figure 2 The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology includes a reverse osmosis system 1, a cleaning mechanism 2, a pure water reuse tank 3, a water storage tank 10, a metering dosing system 11, an ammonia nitrogen separation membrane system 12, a dilute acid storage standby tank 13, a dilute acid circulation tank 14 and an ammonium sulfate storage tank 15. The dilute acid circulation tank 14 is connected to the dilute acid storage standby tank 13 through a pipeline.

[0030] Among them, the reverse osmosis system 1 is connected to the cleaning mechanism 2, the pure water reuse tank 3 and the water storage tank 10 through a delivery pipeline, the metering and dosing system 11 is connected to the water storage tank 10 through a delivery pipeline, and a pump body and a valve are installed on the delivery pipeline. The ammonia nitrogen separation membrane system 12 is connected to the water storage tank 10 through a pipeline, and the ammonia nitrogen separation membrane system 12 is also connected to the dilute acid circulation tank 14 and the ammonium sulfate storage tank 15 through a pipeline, and a pump body and a valve are installed on the pipeline.

[0031] First, high ammonia nitrogen wastewater enters the reverse osmosis system 1 through a pipeline. The reverse osmosis system 1 includes a first filter 101, a second filter 102, a reverse osmosis mechanism 103 and a connection box 104. The first filter 101, the second filter 102, the connection box 104 and the reverse osmosis mechanism 103 are connected in sequence through pipelines, and a valve body and a pump body are also provided on the pipeline. The first filter 101 is a mechanical filter. The first filter 101 is filled with quartz sand and anthracite, which can remove most of the large particle impurities and some colloids in the water. The second filter 102 is a precision filter. The filter element in the second filter 102 can be a polypropylene fiber filter element, which has a high filtration accuracy and can filter out impurities above 10μm.

[0032] After the high-ammonia nitrogen wastewater is filtered out of impurities in sequence through the filter assembly, the high-ammonia nitrogen wastewater will then enter the reverse osmosis mechanism 103 through the connection box 104. The reverse osmosis mechanism 103 includes a reverse osmosis membrane and a membrane shell. The reverse osmosis membrane can be a polyamide composite membrane or a cellulose acetate membrane, which has a high desalination rate and chemical resistance. The membrane shell can be made of stainless steel or fiberglass, which has good corrosion resistance and mechanical strength. At this time, the reverse osmosis technology is used to force the concentration of salt and ammonia nitrogen in the wastewater, so that a large amount of pure water and concentrated concentrated wastewater can be obtained.

[0033] Next, sodium hydroxide is added through the metering dosing system 11, and then the ammonia nitrogen separation membrane system 12 is used to treat the concentrated wastewater. Compared with directly using the ammonia nitrogen separation membrane system 12 to treat high ammonia nitrogen wastewater, it can save more investment costs and operating costs, and effectively save the treatment cost of high ammonia nitrogen wastewater.

[0034] The obtained pure water enters the pure water recycling tank 3 for subsequent recycling. At this time, the concentrated wastewater in the water storage tank 10 will first be doped with sodium hydroxide through the metering dosing system 11 to increase the pH value in the wastewater, thereby improving the removal rate of ammonia nitrogen by the subsequent ammonia nitrogen separation membrane system 12. At the same time, because the reverse osmosis system 1 has almost no retention of hydrogen ions in the high ammonia nitrogen wastewater when pre-treating the high ammonia nitrogen wastewater, but has a certain retention rate for hydroxide ions, the obtained concentrated wastewater will be alkaline, so that when the ammonia nitrogen separation membrane system 12 is used to deammoniate the concentrated wastewater, the dosage of sodium hydroxide can be further reduced, thereby indirectly saving costs.

[0035] When the reverse osmosis membrane has been working for a long time, contaminated impurities are likely to appear on the membrane surface, causing the equipment operating pressure to increase and the water flux to decrease. In order to effectively restore the membrane flux, the cleaning mechanism 2 can be used for timely cleaning to ensure the normal operation of the reverse osmosis system 1. The cleaning mechanism 2 includes a cleaning water tank, a cleaning pump, a ball valve and a connecting pipe. The ball valve is opened to transport the water in the cleaning water tank through the connecting pipe to the reverse osmosis system 1 through the cleaning pump to clean it.

[0036] The ammonia nitrogen separation membrane system 12 includes a first membrane assembly, a second membrane assembly, an intermediate water tank, a first absorption liquid tank and a second absorption liquid tank. The first membrane assembly, the second membrane assembly and the intermediate water tank are connected by a pipeline, and a pump body and a valve are installed on the pipeline. The first membrane assembly and the second membrane assembly are both made of nano-scale membrane materials, which have high separation efficiency and low energy consumption.

[0037] The outer side of the membrane fibers of the first membrane assembly is connected to the first absorption liquid tank through a pipeline, and the outer side of the membrane fibers of the second membrane assembly is connected to the second absorption liquid tank through a pipeline. The absorption liquid tank is connected to the dilute acid circulation tank 14. The treated concentrated wastewater passes through the first membrane assembly, the intermediate water tank and the second membrane assembly in turn, and is discharged after the ammonia nitrogen wastewater that meets the standards is obtained. The absorption liquid in the absorption liquid tank enters from the lower side port of the membrane assembly through the pump body and then comes out from the upper side port. Since the wastewater flows through the middle of the hollow hydrophobic membrane fibers, it can absorb the ammonia gas that passes through the micropores on the wall of the hollow hydrophobic membrane fibers to react and then become ammonium sulfate. Finally, the ammonium sulfate flows to the user's own ammonium sulfate storage tank 15, which effectively realizes the recycling of high ammonia nitrogen wastewater and effectively reduces the cost of ammonia nitrogen separation.

[0038] The implementation principle of the high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology in Example 1 of the present application is: By setting up the reverse osmosis system 1, the high ammonia nitrogen wastewater can be pre-concentrated before entering the ammonia nitrogen separation membrane system 12 to obtain a large amount of pure water and concentrated concentrated wastewater. The pure water can be reused to save water resources, and the concentrated wastewater enters the ammonia nitrogen separation membrane system 12 for further treatment. The reverse osmosis system 1 performs pre-concentration treatment on the high ammonia nitrogen wastewater, which can not only reduce the processing load of the subsequent ammonia nitrogen separation membrane system 12, but also effectively reduce the processing cost. The setting of the first filter 101 and the second filter 102 can effectively remove large particles of impurities and tiny impurities in the water, and ensure the normal operation of the reverse osmosis system 1.

[0039] At the same time, the introduction of the cleaning mechanism 2 can clean the reverse osmosis membrane in time when contamination occurs on the surface, restore the membrane flux, and extend the service life of the membrane. The addition of the metering dosing system 11 can accurately control the dosage of sodium hydroxide, improve the removal rate of ammonia nitrogen, and reduce the treatment cost. The entire device can effectively treat high-ammonia nitrogen wastewater and realize resource recycling.

[0040] Embodiment 2: Example 2 of the present application provides a high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology.

[0041] refer to Figure 2 and Figure 3 , the difference between Example 2 of the present application and Example 1 is that: it also includes a filter cartridge 4, a filter screen 16, resin particles 17, a connecting plate 7, a transmission pipe 8 and an adjustment mechanism 9; One end of the filter cartridge 4 is connected to the inner wall of the water tank 10, and an opening is provided at the bottom of the filter cartridge 4. The shape of the filter cartridge 4 can be square or circular. One end of the filter screen 16 is hinged to the inner wall of the water tank 10, and the resin particles 17 are all located in the filter cartridge 4, and the diameter of the resin particles 17 is larger than the diameter of the holes formed on the filter cartridge 4 and the filter screen 16. The transmission pipe 8 is connected to the filter screen 16 and extends to the inside of the water tank 10.

[0042] Among them, the number of water tanks 10 can be set according to actual needs. In this embodiment, three water tanks 10 are taken as an example. A feed pipe 18 is fixed on the top of the water tank 10. The resin particles 17 to be replaced later can be placed into the cavity formed by the filter cartridge 4 and the filter net 16 through the feed pipe 18.

[0043] refer to Figure 2 and Figure 3 , the connecting plate 7 is connected to the inner wall of the water tank 10, a connecting port for the resin particles 17 to be removed is provided on the water tank 10, a sealing ring is fixed on the inner wall of the connecting port, a box door is connected to the water tank 10, an adjusting mechanism 9 is provided on the water tank 10, and the filter 16 is connected to the adjusting mechanism 9. When the device is working, the adjusting mechanism 9 on the water tank 10 where the resin particles 17 are to be replaced can be operated to drive the filter 16 connected thereto to swing, thereby driving the transmission pipe 8 connected to the filter 16 to swing.

[0044] When the adjustment mechanism 9 drives the filter screen 16 to swing to fit one side of the connecting plate 7, the transmission pipe 8 will also adjust its position along with the filter screen 16, and the wastewater that has not been filtered and adsorbed in the water storage tank 10 will be transported through the water pump, and the wastewater will be transported to the other two water storage tanks 10 for further filtering and adsorption. When the filter screen 16 swings to fit one side of the connecting plate 7, the resin particles 17 can be moved along the filter screen 16 and moved to the outside of the filter cartridge 4 by opening the box door, and can be moved to the outside of the water storage tank 10 through the connecting port for treatment. At this time, the transmission pipe 8 can enable the device to continue to operate, treat the wastewater, and ensure the working efficiency of the device.

[0045] Among them, since the height of the bottom wall of the water tank 10 close to the connecting plate 7 is lower than the height of the side away from the connecting plate 7, it is convenient for the transmission pipe to more comprehensively transport the unfiltered water in the water tank 10 where the resin particles 17 are to be replaced, and transport the water to the other two water tanks 10. The transmission pipe 8 can be made of a plastic hose.

[0046] refer to Figure 3 and Figure 4 The adjusting mechanism 9 includes a driving motor 901, a rotating rod 902, a winding rope 903 and a connecting piece 904; the rotating rod 902 is connected to the output shaft of the driving motor 901; the winding rope 903 is wound around the outer surface of the rotating rod 902, and one end of the winding rope 903 is connected to the connecting piece 904, and the connecting piece 904 is connected to the filter screen 16. The driving motor 901 drives the rotation and then drives the winding rope 903 and the connecting piece 904 to move, wherein the connecting piece 904 can be a hook; it can also be a fixed block, thereby driving the filter screen 16 to swing downward.

[0047] The implementation principle of the high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology in Example 2 of the present application is: By setting up multiple water storage tanks 10, when the resin particles 17 are replaced in one of the water storage tanks 10, it can be ensured that the other water storage tanks 10 can continue to treat the wastewater, thereby ensuring the continuous operation of the device. At the same time, the design of the filter cartridge 4 and the filter screen 16 allows the resin particles 17 to be more conveniently removed when they need to be replaced, further reducing the operational complexity and increased processing costs caused by frequent replacement of resins in the resin adsorption method. The introduction of the adjustment mechanism 9 makes the replacement of the resin particles 17 more automated, improving the convenience and reliability of the operation. The device is simple to operate, and can effectively remove heavy metal ions in high-ammonia nitrogen wastewater, making it easier to treat high-ammonia nitrogen wastewater in the later stage, and effectively improving the treatment effect of wastewater.

[0048] Embodiment 3: Example 3 of the present application provides a high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology.

[0049] refer to Figure 5 and Figure 6 , the difference between Example 3 of the present application and Example 2 is that: The filter cylinder 4 includes an inner cylinder 402 and an outer cylinder 401. The inner cylinder 402 includes a plurality of baffles 4021. The baffles 4021 are slidably connected to the outer cylinder 401. The bottom of the baffles 4021 is an arc surface. When the filter screen 16 swings downward through the adjustment mechanism 9, the baffles 4021 will move in the vertical direction due to its own gravity, so that the resin particles 17 to be replaced can still be located in the filter cylinder 4 during the process of moving with the change of the angle of the filter screen 16.

[0050] refer to Figure 6 and Figure 7 , further comprising a pusher 5 and a transmission mechanism 6, wherein the pusher 5 comprises a first push plate 501 and a second push plate 502 fixed to the bottom of the baffle 4021 near the communication port, wherein the first push plate 501 extends to the side wall of the water storage tank 10, a tank door is connected to the water storage tank 10, the second push plate 502 is arranged on the tank door, and the first push plate 501 is located above the second push plate 502. The transmission mechanism 6 comprises a first rack 601, a second rack 602 and a gear 603, wherein the first rack 601 is connected to the first push plate 501, the second rack 602 is connected to the inner wall of the water storage tank 10, the gear 603 is rotatably connected to the second push plate 502, and the gear 603 is located between the first rack 601 and the second rack 602 on opposite sides.

[0051] When the filter screen 16 swings downward through the adjustment mechanism 9, the baffle 4021 will move downward, and the baffle 4021 will drive the first push plate 501 and the first rack 601 to move downward. At this time, the box door remains stationary, and the vertical height of the second push plate 502 and the gear 603 also remains unchanged.

[0052] When the filter screen 16 is swung downward by the adjustment mechanism 9 until the filter screen 16 is attached to one side of the connecting plate 7, the first rack 601 and the gear 603 are in meshing state, and the gear 603 and the second rack 602 are in a separated state. Then, by moving the door upward, the first push plate 501 and the gear 603 are driven to move, and the gear 603 will move upward. The gear 603 is meshed with the second rack 602 during the upward movement, and the meshing force of the second rack 602 can drive the gear 603 to rotate. The rotation of the gear 603 can drive the first rack 601 to move, and the baffle 4021 connected to the first rack 601 will be driven to move upward. At this time, the resin particles 17 in the filter cartridge 4 are no longer blocked by the baffle 4021, and can be moved out along the filter screen 16 to the connecting port, which is more convenient for the subsequent replacement of the resin particles 17.

[0053] The implementation principle of the high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology in Example 3 of the present application is: The filter screen 16 is swung by the adjusting mechanism 9, driving the baffle plate 4021 and the first push plate 501 to move downward. When the filter screen 16 is in contact with the connecting plate 7, the first rack 601 is meshed with the gear 603, and the gear 603 is separated from the second rack 602. Then, the box door is moved upward, driving the push plate and the gear 603 to move upward, and the gear 603 is meshed and rotated with the second rack 602, thereby driving the first rack 601 and the baffle plate 4021 to move upward, so that the resin particles 17 can be moved out of the filter cartridge 4 along the filter screen 16, so as to realize the rapid replacement of the resin particles 17, and effectively improve the efficiency and convenience of resin replacement.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology, characterized in that: include: At least two water storage tanks (10), a filter cartridge (4), a filter screen (16), a connecting plate (7), and an adjusting mechanism (9); One end of the filter cartridge (4) is connected to the inner wall of the water storage tank (10), an opening is provided at the bottom of the filter cartridge (4), the filter screen (16) is located at the bottom of the filter cartridge (4), and one end of the filter screen (16) is hinged to the inner wall of the water storage tank (10); The connecting plate (7) is connected to the inner wall of the water storage tank (10); a connecting port for removing the resin particles (17) is provided on the water storage tank (10); the adjusting mechanism (9) is provided on the water storage tank (10); the filter screen (16) is connected to the adjusting mechanism (9); the adjusting mechanism (9) drives the filter screen (16) to swing downward until it is in contact with one side of the connecting plate (7), thereby removing the resin particles (17) from the filter cartridge (4).

2. The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology according to claim 1 is characterized in that: It also comprises a transmission pipe (8), the transmission pipe (8) being connected to the filter screen (16), the transmission pipe (8) being provided with a water pump, and the transmission pipe (8) being used to transport wastewater between the water storage tanks (10).

3. The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology according to claim 2 is characterized in that: The height of the inner bottom wall of the water storage tank (10) on the side close to the connecting plate (7) is lower than the height on the side away from the connecting plate (7).

4. The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology according to claim 1 is characterized in that: The filter cylinder (4) comprises an inner cylinder (402) and an outer cylinder (401); the inner cylinder (402) comprises a plurality of baffles (4021) which are vertically slidably connected to the outer cylinder (401); and further comprises a pushing member (5) for pushing the baffles (4021) to move upward.

5. The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology according to claim 4 is characterized in that: The pushing member (5) comprises a first pushing plate (501) and a second pushing plate (502); the first pushing plate (501) is arranged at the bottom of the baffle plate (4021) and extends to the side wall of the water storage tank (10); a box door is connected to the water storage tank (10), the second pushing plate (502) is arranged on the box door, and the first pushing plate (501) is located above the second pushing plate (502); when the filter screen (16) swings downward to fit with one side of the connecting plate (7), the box door moves upward, thereby driving the baffle plate (4021) to move upward through the first pushing plate (501) and the second pushing plate (502).

6. The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology according to claim 4 is characterized in that: The bottom of the baffle (4021) is a curved surface.

7. The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology according to claim 5 is characterized in that: The invention also comprises a transmission mechanism (6), wherein the transmission mechanism (6) comprises a first rack (601), a second rack (602) and a gear (603), wherein the first rack (601) is connected to the first push plate (501), the second rack (602) is connected to the inner wall of the water storage tank (10), the gear (603) is rotatably connected to the second push plate (502), and the gear (603) is located between the first rack (601) and the second rack (602).

8. The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology according to claim 1 is characterized in that: It also comprises a delivery pipeline, the delivery pipeline is connected to the water storage tank (10), and a valve body is provided on the delivery pipeline.

9. The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology according to claim 8 is characterized in that: The invention also comprises a reverse osmosis system (1), wherein the reverse osmosis system (1) comprises a first filter (101), a second filter (102), a reverse osmosis mechanism (103) and a connection box (104); the first filter (101), the second filter (102), the connection box (104) and the reverse osmosis mechanism (103) are connected in sequence via pipelines; the reverse osmosis mechanism (103) is connected to a water storage tank (10) via a delivery pipeline; the first filter (101) is used to remove large particle impurities and colloids; the second filter (102) is used to filter out impurities larger than 10 μm; and the reverse osmosis mechanism (103) is used to concentrate high-ammonia nitrogen wastewater.

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