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

Abstract

The application provides a high ammonia-nitrogen wastewater treatment device based on ammonia-nitrogen separation membrane-reverse osmosis membrane technology, which 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 with 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 the cavity formed by the filter cartridge and the filter screen. The connecting plate is connected with the inner wall of the water storage tank, a communication port for removing the resin particles is formed in the water storage tank, the adjusting mechanism is arranged on the water storage tank, the filter screen is connected with the adjusting mechanism, 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 removed from the cavity. The application can efficiently remove ammonia-nitrogen in high ammonia-nitrogen wastewater, and improve the treatment efficiency.

Description

TECHNICAL FIELD

[0001] The 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

[0002] Ammonia-nitrogen wastewater mainly comes from the industries of chemical fertilizer, coking, petrochemical, pharmaceutical, food, and landfill. If the wastewater is directly discharged into water bodies without treatment, it will not only cause eutrophication of water bodies and blackening and stench of water bodies, but also have toxic effects on human beings and organisms. Therefore, the ammonia-nitrogen wastewater needs to be effectively treated. The common means for treating high-ammonia-nitrogen wastewater is biological method. However, for wastewater with low C / N ratio and high ammonia-nitrogen, the carbon source is seriously insufficient, the nutrition ratio is unbalanced, and the biological treatment is greatly inhibited, so the wastewater is not suitable for direct biological treatment. In this case, an ammonia-nitrogen separation membrane system is usually used for treatment.

[0003] However, when the ammonia-nitrogen separation membrane system is used to treat high-ammonia-nitrogen wastewater, heavy metal ions existing in the wastewater may accumulate on the membrane surface or in the membrane holes during pH adjustment, which may cause membrane pollution, reduce the flux and separation efficiency of the membrane, and affect the use efficiency of the device. Therefore, the high-ammonia-nitrogen wastewater is usually first delivered into a small water storage tank, the resin in the water storage tank is used to remove and adsorb the heavy metal ions for a certain period of time, and then the subsequent treatment is performed through the ammonia-nitrogen separation membrane system, which is beneficial to the recycling of the high-ammonia-nitrogen wastewater.

[0004] Although the resin can remove the heavy metal ions in the ammonia-nitrogen wastewater to a certain extent, when the resin is saturated, the resin in the water tank needs to be replaced to continue the adsorption and filtration of the high-ammonia-nitrogen wastewater. When the ineffective resin is treated, the device usually needs to be stopped, and the resin is taken out from the water tank. This process consumes a lot of time, and the continuous filtration and adsorption of the wastewater cannot be maintained, thereby delaying the treatment of the wastewater, affecting the use of the device, and reducing the work efficiency. SUMMARY

[0005] In order to solve the problems that the resin for adsorbing heavy metal ions in wastewater is replaced after saturation, the replacement step is complicated and time-consuming, the wastewater treatment is interrupted, and the efficiency of the device is reduced, the application provides a high-ammonia-nitrogen wastewater treatment device based on ammonia-nitrogen separation membrane-reverse osmosis membrane technology.

[0006] The application provides a high-ammonia-nitrogen wastewater treatment device based on ammonia-nitrogen separation membrane-reverse osmosis membrane technology, which adopts the following technical scheme:

[0007] The high-ammonia-nitrogen wastewater treatment device based on 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.

[0008] One end of the filter cartridge is connected with the inner wall of the water storage tank, one end of the filter screen is hingedly connected with 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 the cavity formed by the filter cartridge and the filter screen;

[0009] The connecting plate is connected with the inner wall of the water storage tank, a communication opening for removing the resin particles is formed on the water storage tank, 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 removed from the cavity.

[0010] By adopting the above technical scheme, the resin particles are conveniently replaced in the high-ammonia-nitrogen wastewater treatment process. By arranging the filter cartridge, the filter screen and the adjusting mechanism, the saturated resin particles can be quickly removed from the water storage tank without affecting the continuity of the wastewater treatment, and other water storage tanks can continue to treat unfiltered wastewater, thereby ensuring the continuous and efficient operation of the device. The resin particle replacement time is effectively reduced, the overall treatment efficiency is improved, and the maintenance cost is reduced.

[0011] Preferably, the transmission pipe is connected with the filter screen, and the transmission pipe is used to convey the wastewater between the water storage tanks.

[0012] By adopting the above technical scheme, the transmission pipe is arranged, so that when the resin particles need to be replaced, the unfiltered wastewater can be conveyed to other water storage tanks through the transmission pipe for continuous filtration and adsorption, thereby ensuring the continuous operation of the entire device, reducing the interruption of wastewater treatment caused by replacing the resin particles, and improving the continuity and efficiency of the wastewater treatment.

[0013] Preferably, the height of the inner bottom wall of the water storage tank near the connecting plate is lower than the height of the inner bottom wall of the water storage tank away from the connecting plate.

[0014] By adopting the above technical scheme, the height of the inner bottom wall of the water storage tank near the connecting plate is lower than the height of the inner bottom wall of the water storage tank away from the connecting plate. By designing the height difference of the inner bottom wall of the water storage tank, the unfiltered wastewater can be more concentrated in one place, which is conducive to the transmission pipe to more comprehensively convey the wastewater to other water storage tanks for continuous treatment, thereby improving the continuous treatment capacity of the wastewater during the replacement of the resin particles and further improving the treatment capacity of the device.

[0015] Preferably, the filter cartridge comprises an inner cylinder and an outer cylinder, the inner cylinder comprises a plurality of baffles, the baffles are vertically slidably connected with the outer cylinder, and the device further comprises a pushing member for pushing the baffles upward.

[0016] By adopting the technical scheme, the baffle in the inner cylinder is vertically and slidingly connected with the outer cylinder, so that the baffle can be moved, thereby effectively controlling the resin particles in the filter cartridge, and further reducing the resin particles from moving out of the filter cartridge along with the water flow when the filter screen swings, so that the resin particles fall into the water storage tank and affect the subsequent processing link, thereby effectively improving the efficiency and quality of wastewater treatment. Meanwhile, the setting of the pushing member further ensures the stable upward movement of the baffle, facilitates the movement of the resin particles out of the filter cartridge when needed, and enables the resin particles to move along the filter screen to the communication port, thereby improving the automation degree and reliability of the equipment.

[0017] Preferably, the pushing member comprises 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 storage tank; a tank door is connected to the water storage tank; the second push plate is arranged on the tank door, and the first push plate is located above the second push plate; when the filter screen swings downward to adhere to one side of the connecting plate, the tank door moves upward to drive the baffle to move upward through the first push plate and the second push plate.

[0018] By adopting the technical scheme, when the filter screen swings downward to adhere to one side of the connecting plate, the tank door moves upward to drive the baffle to move upward through the first push plate and the second push plate, so that the resin particles can be moved out of the filter cartridge by the upward movement of the baffle when needed, and then the resin particles move along the filter screen to the communication port.

[0019] Preferably, the bottom of the baffle is arc-shaped.

[0020] By adopting the technical scheme, the arc-shaped design can effectively reduce the resistance when the baffle moves up and down, so that the baffle moves more smoothly and the service life of the equipment is prolonged.

[0021] Preferably, the conveying mechanism comprises a first gear rack, a second gear rack and a gear; the first gear rack is connected with the first push plate; the second gear rack is connected with the inner wall of the water storage tank; the gear is rotationally connected with the second push plate; and the gear is located between the first gear rack and the second gear rack.

[0022] By adopting the technical scheme, when the filter screen swings downward to adhere to one side of the connecting plate, the tank 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 gear rack. The stability and reliability of the movement of the baffle are effectively ensured, and the baffle can be further moved to an appropriate height, so that the communication port is not blocked by the baffle when the resin is conveyed through the filter screen, and the conveying of the resin is more convenient and fast.

[0023] Preferably, the conveying pipeline is connected with the water storage tank, and a valve body is arranged on the conveying pipeline.

[0024] By adopting the technical scheme, the conveying pipeline is connected with the water storage tank, and the valve body is arranged on the conveying pipeline, so that the control and conveying of the high-ammonia-nitrogen wastewater can be further realized, and the flexibility and efficiency of the wastewater treatment are improved. The valve body is arranged, so that the operator can adjust the flow and pressure of the wastewater according to actual needs.

[0025] Preferably, the reverse osmosis system comprises a first filter, a second filter, a reverse osmosis mechanism and a connecting tank, the first filter, the second filter, the connecting tank and the reverse osmosis mechanism are sequentially connected through pipelines, the first filter is used for removing large-particle impurities and colloids, the second filter is used for filtering impurities larger than 10 μm, and the reverse osmosis mechanism is used for concentrating the high-ammonia-nitrogen wastewater.

[0026] By adopting the technical scheme, the effective pretreatment and concentration of the high-ammonia-nitrogen wastewater are realized. Specifically, the first filter can remove most of the large-particle impurities and part of the colloids in the water, so as to ensure the preliminary purification of the water quality; the second filter can filter the small impurities larger than 10 μm, so as to further improve the purity of the water quality; and the reverse osmosis mechanism can concentrate the high-ammonia-nitrogen wastewater, so as to obtain pure water and concentrated wastewater, and greatly reduce the cost of subsequent ammonia-nitrogen separation. This series of processing steps not only improves the processing efficiency, but also effectively reduces the operation and maintenance cost of the whole system.

[0027] In summary, the present application has at least one of the following beneficial effects:

[0028] 1. The resin particles in the water storage tank can be quickly replaced through the adjusting mechanism, which effectively reduces the complexity of the operation steps when replacing the resin, further saves time, and can maintain the treatment of wastewater during replacement, effectively solving the problem of interruption of wastewater treatment, and further ensuring the continuity and stability of the wastewater treatment;

[0029] 2. The reverse osmosis system pretreats the high-ammonia-nitrogen wastewater, the generated pure water can be directly reused, reducing the waste of water resources, and the concentrated wastewater generated is treated by the subsequent ammonia-nitrogen separation membrane system, further improving the comprehensive benefits of the wastewater treatment;

[0030] 3. The combination of the reverse osmosis pre-concentration separation part and the ammonia-nitrogen separation membrane system realizes the effective treatment and resource recovery of the high-ammonia-nitrogen wastewater, effectively reduces the cost of ammonia-nitrogen separation, and improves the economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of the principle structure of embodiment 1 of the present application;

[0032] Figure 2 is a schematic diagram of the three-dimensional structure of the water storage tank of embodiment 2 of the present application;

[0033] Figure 3 is a cross-sectional structure schematic diagram of the water storage tank of the embodiment 2 of the present application;

[0034] Figure 4 is a partial structure schematic diagram of the adjusting mechanism of the embodiment 2 of the present application;

[0035] Figure 5 is a connection structure schematic diagram of the pushing member of the embodiment 3 of the present application;

[0036] Figure 6 is a cross-sectional structure schematic diagram of the water storage tank of the embodiment 3 of the present application;

[0037] Figure 7 is a partial structure schematic diagram of the embodiment 3 of the present application.

[0038] The figure mark explanation: 1, reverse osmosis system; 101, first filter; 102, second filter; 103, reverse osmosis mechanism; 104, connecting box; 2, cleaning mechanism; 3, pure water recycling tank; 4, filter cartridge; 401, outer cylinder; 402, inner cylinder; 4021, baffle; 5, pushing member; 501, first pushing plate; 502, second pushing plate; 6, conveying mechanism; 601, first rack; 602, second rack; 603, gear; 7, connecting plate; 8, transmission pipe; 9, adjusting mechanism; 901, driving motor; 902, rotating rod; 903, winding rope; 904, connecting piece; 10, water storage tank; 11, metering dosing system; 12, ammonia-nitrogen separation membrane system; 13, dilute acid storage standby tank; 14, dilute acid circulating tank; 15, ammonium sulfate storage tank; 16, filter screen; 17, resin particles; 18, feed pipe. DETAILED DESCRIPTION

[0039] The following will be combined with the Figures 1-7 The present application is further described in detail.

[0040] Embodiment 1:

[0041] The embodiment 1 of the present application provides a high ammonia-nitrogen wastewater treatment device based on ammonia-nitrogen separation membrane-reverse osmosis membrane technology.

[0042] Reference 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 recycling 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 circulating tank 14, and an ammonium sulfate storage tank 15, and the dilute acid circulating tank 14 and the dilute acid storage standby tank 13 are connected through pipelines.

[0043] The reverse osmosis system 1 is connected with the cleaning mechanism 2, the pure water recycling tank 3 and the water storage tank 10 through the conveying pipeline, the metering dosing system 11 is also connected with the water storage tank 10 through the conveying pipeline, the pump body and the valve are installed on the conveying pipeline, the ammonia-nitrogen separation membrane system 12 is connected with the water storage tank 10 through the pipeline, the ammonia-nitrogen separation membrane system 12 is also connected with the dilute acid circulating tank 14 and the ammonium sulfate storage tank 15 through the pipeline, and the pump body and the valve are installed on the pipeline.

[0044] Firstly, the high ammonia-nitrogen wastewater is conveyed into the reverse osmosis system 1, the reverse osmosis system 1 comprises a first filter 101, a second filter 102, a reverse osmosis mechanism 103 and a connecting tank 104, the first filter 101, the second filter 102, the connecting tank 104 and the reverse osmosis mechanism 103 are sequentially connected through the pipeline, and the valve body and the pump body are arranged on the pipeline. The first filter 101 is a mechanical filter, the quartz sand and the anthracite are arranged in the first filter 101, most of the large particle impurities and part of the colloids in the water can be removed, the second filter 102 is a precision filter, the filter core in the second filter 102 can be selected from polypropylene fiber filter cores, the second filter 102 has high filtering precision and can filter out impurities above 10 μm.

[0045] After the high ammonia-nitrogen wastewater is filtered by the filter assembly, the high ammonia-nitrogen wastewater then enters the reverse osmosis mechanism 103 through the connecting tank 104, the reverse osmosis mechanism 103 comprises a reverse osmosis membrane and a membrane shell, the reverse osmosis membrane can be selected from polyamide composite membranes or cellulose acetate membranes, and the reverse osmosis membrane has high desalination rate and chemical resistance. The membrane shell can be made of stainless steel or glass steel material, and the membrane shell has good corrosion resistance and mechanical strength. At this time, the salt and ammonia-nitrogen in the wastewater are forcedly concentrated by using the reverse osmosis technology, and a large amount of pure water and concentrated concentrated wastewater can be obtained.

[0046] Next, sodium hydroxide is added by the metering dosing system 11, and the concentrated wastewater obtained by the concentration treatment is treated by the ammonia-nitrogen separation membrane system 12. Compared with directly using the ammonia-nitrogen separation membrane system 12 to treat the high ammonia-nitrogen wastewater, more investment cost and operation cost can be saved, and the treatment cost of the high ammonia-nitrogen wastewater is effectively saved.

[0047] The obtained pure water enters the pure water recycling tank 3 to facilitate subsequent recycling. At this time, the concentrated wastewater in the water storage tank 10 will first add sodium hydroxide through the metering dosing system 11 to increase the pH value of the wastewater, thereby improving the removal rate of ammonia nitrogen in the subsequent ammonia nitrogen separation membrane system 12. At the same time, since the reverse osmosis system 1 has almost no retention of hydrogen ions in the high ammonia nitrogen wastewater during pretreatment, and has a certain retention rate of hydroxyl ions, the obtained concentrated wastewater is alkaline, so that the addition amount of sodium hydroxide can be further reduced when the ammonia nitrogen separation membrane system 12 is used to remove ammonia from the concentrated wastewater, thereby indirectly saving costs.

[0048] When the reverse osmosis membrane has been in operation for a long time, impurities that pollute the membrane surface can cause the operating pressure of the equipment to rise and the water flux to decrease. In order to effectively restore the flux of the membrane, 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 pipeline. By opening the ball valve, the water in the cleaning water tank is transported to the reverse osmosis system 1 through the connecting pipeline by the cleaning pump to clean it.

[0049] 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 pipelines, and pumps and valves are installed on the pipelines. The first membrane assembly and the second membrane assembly both use nanoscale membrane materials, which have high separation efficiency and low energy consumption.

[0050] The outer side of the membrane filaments of the first membrane assembly is connected to the first absorption liquid tank through a pipeline, and the outer side of the membrane filaments of the second membrane assembly is connected to the second absorption liquid tank through a pipeline. The absorption liquid tanks are connected to a dilute acid circulating tank 14. The treated concentrated wastewater passes through the first membrane assembly, the intermediate water tank, and the second membrane assembly in sequence, and the ammonia nitrogen wastewater that meets the standard is discharged. The absorption liquid in the absorption liquid tank enters from the lower side of the membrane assembly through the pump body and then exits from the upper side. Since the wastewater passes through the hollow hydrophobic membrane filaments, it can absorb the ammonia gas that passes through the micropores on the wall of the hollow hydrophobic membrane filaments and react to become ammonium sulfate. Finally, the ammonium sulfate flows into the user's self-provided ammonium sulfate storage tank 15, effectively realizing the recycling of high ammonia nitrogen wastewater and effectively reducing the ammonia nitrogen separation cost.

[0051] The implementation principle of the high ammonia nitrogen wastewater treatment device based on the ammonia nitrogen separation membrane-reverse osmosis membrane technology in Embodiment 1 of the present application is as follows:

[0052] By setting the reverse osmosis system 1, the high ammonia nitrogen wastewater can be pre-concentrated before entering the ammonia nitrogen separation membrane system 12, and a large amount of pure water and concentrated wastewater can be obtained. 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 pre-concentrates the high ammonia nitrogen wastewater, which not only reduces the processing load of the subsequent ammonia nitrogen separation membrane system 12, but also effectively reduces the processing cost. The first filter 101 and the second filter 102 can effectively remove large and small impurities in the water, ensuring the normal operation of the reverse osmosis system 1.

[0053] At the same time, the introduction of the simultaneous cleaning mechanism 2 can clean the reverse osmosis membrane surface in time when pollution occurs, restore the flux of the membrane, and prolong the service life of the membrane. The addition of the metering dosing system 11 can accurately control the addition amount of sodium hydroxide, improve the removal rate of ammonia nitrogen, and reduce the processing cost. The entire device can effectively treat high ammonia nitrogen wastewater and realize resource recycling.

[0054] Embodiment 2

[0055] The embodiment 2 of the present application provides a high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology.

[0056] Reference Figure 2 and Figure 3 The difference between the embodiment 2 of the present application and the embodiment 1 is that it further includes a filter cartridge 4, a filter screen 16, resin particles 17, a connecting plate 7, a transmission pipe 8, and an adjusting mechanism 9.

[0057] The one end of the filter cartridge 4 is connected with the inner wall of the water storage tank 10, and the bottom of the filter cartridge 4 is provided with an opening. The shape of the filter cartridge 4 can be square or circular. One end of the filter screen 16 is hinged with the inner wall of the water storage tank 10, and the resin particles 17 are located in the filter cartridge 4, and the diameter of the resin particles 17 is greater than the diameter of the holes formed on the filter cartridge 4 and the filter screen 16. The transmission pipe 8 is connected with the filter screen 16 and extends into the inside of the water storage tank 10.

[0058] The number of the water storage tanks 10 can be set according to actual needs. In this embodiment, three water storage tanks 10 are taken as an example. The top of the water storage tank 10 is fixed with a feeding pipe 18, and the subsequent to-be-replaced resin particles 17 can be put into the cavity formed by the filter cartridge 4 and the filter screen 16 through the feeding pipe 18.

[0059] Reference Figure 2 and Figure 3The connecting plate 7 is connected with the inner wall of the water storage tank 10, the water storage tank 10 is provided with a communication port for the resin particles 17 to move out, the inner wall of the communication port is fixed with a sealing ring, the water storage tank 10 is connected with a tank door, the adjusting mechanism 9 is arranged on the water storage tank 10, and the filter screen 16 is connected with the adjusting mechanism 9. When the device works, the adjusting mechanism 9 on the water storage tank 10 where the resin particles 17 are to be replaced is operated to drive the filter screen 16 connected therewith to swing, and then drive the transmission pipe 8 connected with the filter screen 16 to swing.

[0060] When the adjusting mechanism 9 drives the filter screen 16 to swing to be attached to one side of the connecting plate 7, the transmission pipe 8 also adjusts the position along with the filter screen 16, and the water pump transports the wastewater that has not been filtered and adsorbed in the water storage tank 10 to the other two water storage tanks 10 to continue filtering and adsorbing. When the filter screen 16 swings to be attached to one side of the connecting plate 7, the tank door is opened to enable the resin particles 17 to move along the filter screen 16, move out of the filter cylinder 4, and be moved out of the water storage tank 10 through the communication port to be treated. At this time, the transmission pipe 8 can enable the device to continue to operate to treat the wastewater, and ensure the working efficiency of the device.

[0061] In the embodiment, the height of the inner bottom wall of the water storage tank 10 near one side of the connecting plate 7 is lower than the height of the inner bottom wall of the water storage tank 10 far from one side of the connecting plate 7, so that the transmission pipe can more comprehensively transport the unfiltered water in the water storage tank 10 where the resin particles 17 are to be replaced to the other two water storage tanks 10. The transmission pipe 8 can be a plastic hose.

[0062] Reference Figure 3 and Figure 4 The adjusting mechanism 9 comprises a driving motor 901, a rotating rod 902, a winding rope 903 and a connecting piece 904. The rotating rod 902 is connected with the output shaft of the driving motor 901. The winding rope 903 is wound on the outer surface of the rotating rod 902, and one end of the winding rope 903 is connected with the connecting piece 904. The connecting piece 904 is connected with the filter screen 16. The driving motor 901 drives the rotating rod 902 to move, and then drives the winding rope 903 and the connecting piece 904 to move. The connecting piece 904 can be a hook or a fixed block, and then drives the filter screen 16 to swing downward.

[0063] The implementation principle of the high-ammonia-nitrogen wastewater treatment device based on the ammonia-nitrogen separation membrane-reverse osmosis membrane technology in the embodiment 2 is as follows:

[0064] By setting multiple water storage tanks 10, when resin particles 17 are replaced in one of the water storage tanks 10, other water storage tanks 10 can still continue to treat wastewater, thereby ensuring continuous operation of the device. The design of the filter cartridge 4 and the filter screen 16 allows resin particles 17 to be removed more conveniently when they need to be replaced, further reducing the complexity of operations and the increase in processing costs caused by frequent replacement of resin in the resin adsorption method. The introduction of the adjusting mechanism 9 makes the replacement of 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 handle high ammonia-nitrogen wastewater in the later stage and effectively improving the treatment effect of wastewater.

[0065] Embodiment 3

[0066] Embodiment 3 of the present application provides a high ammonia-nitrogen wastewater treatment device based on ammonia-nitrogen separation membrane-reverse osmosis membrane technology.

[0067] Reference Figure 5 and Figure 6 Embodiment 3 of the present application differs from Embodiment 2 in that:

[0068] The filter cartridge 4 includes an inner cylinder 402 and an outer cylinder 401. The inner cylinder 402 includes a plurality of baffles 4021, which are slidingly connected to the outer cylinder 401. The bottom of the baffle 4021 is arc-shaped. When the filter screen 16 swings downward by the adjusting mechanism 9, the baffle 4021 will move vertically due to its own gravity, and the resin particles 17 to be replaced can also be located in the filter cartridge 4 during the movement of the filter screen 16.

[0069] Reference Figure 6 and Figure 7 The device further includes a pushing piece 5 and a conveying mechanism 6. The pushing piece 5 includes a first push plate 501 and a second push plate 502, which are fixed to the bottom of the baffle 4021 near the communication port. The first push plate 501 extends to the side wall of the water storage tank 10. The water storage tank 10 is connected with a tank door. 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 conveying mechanism 6 includes a first rack 601, a second rack 602, and a gear 603. The first rack 601 is connected with the first push plate 501. The second rack 602 is connected with the inner wall of the water storage tank 10. The gear 603 is rotationally connected with the second push plate 502. The gear 603 is located between the opposite sides of the first rack 601 and the second rack 602.

[0070] When the filter screen 16 swings downward by the adjusting mechanism 9, the baffle 4021 is moved downward, and the first push plate 501 and the first rack 601 are moved downward as well, while the box door remains stationary, and the vertical height of the second push plate 502 and the gear 603 remains unchanged.

[0071] When the filter screen 16 swings downward by the adjusting mechanism 9 to adhere 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 separation state, then the box door is moved upward to move the first push plate 501 and the gear 603, and the gear 603 is moved upward. The gear 603 is meshed with the second rack 602 during upward movement, and the meshing force of the second rack 602 can drive the gear 603 to rotate, and the rotation of the gear 603 can drive the first rack 601 to move, and the baffle 4021 connected with the first rack 601 is moved upward, and the resin particles 17 in the filter cartridge 4 are no longer blocked by the baffle 4021, and can move out of the filter screen 16 to the communication port, which is more convenient for subsequent replacement of the resin particles 17.

[0072] The implementation principle of the high ammonia-nitrogen wastewater treatment device based on the ammonia-nitrogen separation membrane-reverse osmosis membrane technology in Embodiment 3 of the present application is as follows:

[0073] The filter screen 16 is swung by the adjusting mechanism 9 to move the baffle 4021 and the first push plate 501 downward, when the filter screen 16 adheres to 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 to move the push plate and the gear 603 upward, the gear 603 is meshed with the second rack 602 and rotates, and then drives the first rack 601 and the baffle 4021 to move upward, so that the resin particles 17 can move out of the filter cartridge 4 along the filter screen 16, which facilitates the rapid replacement of the resin particles 17; and the efficiency and convenience of resin replacement are effectively improved.

[0074] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within 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: The system comprises at least two water storage tanks (10), a filter cylinder (4), a filter screen (16), a connecting plate (7), and an adjusting mechanism (9); one end of the filter cylinder (4) is connected to the inner wall of the water storage tank (10), the bottom of the filter cylinder (4) has an opening, the filter screen (16) is located at the bottom of the filter cylinder (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), and the water storage tank (10) has a communication port for resin particles (17) to be removed; the adjusting mechanism (9)... The mechanism (9) is located on the water storage tank (10). The filter screen (16) is connected to the adjustment mechanism (9). The adjustment mechanism (9) drives the filter screen (16) to swing downwards until it is in contact with the side of the connecting plate (7), thereby removing the resin particles (17) from the filter cylinder (4). The filter cylinder (4) includes an inner cylinder (402) and an outer cylinder (401). The inner cylinder (402) includes several baffles (4021). The baffles (4021) are vertically slidably connected to the outer cylinder (401). The mechanism also includes pushing the baffles (4021) upwards. The pusher (5) includes a first push plate (501) and a second push plate (502); the first push plate (501) is located at the bottom of the baffle (4021) and extends to the side wall of the water storage tank (10); the water storage tank (10) is connected to a door, the second push plate (502) is located on the door, and the first push plate (501) is located above the second push plate (502). When the filter screen (16) swings downward to fit against one side of the connecting plate (7), the door moves upward, thereby passing through the first push plate (501) and the second push plate (502). The baffle (4021) is moved upward. The bottom of the baffle (4021) is arc-shaped. The baffle (4021) also includes a conveying mechanism (6). The conveying mechanism (6) includes a first rack (601), a second rack (602), and a gear (603). 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). The gear (603) is located between the first rack (601) and the second rack (602).

2. The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology according to claim 1, characterized in that, It also includes a transmission pipe (8) connected to a filter screen (16), and a water pump is provided on the transmission pipe (8). The transmission pipe (8) is used to transport wastewater between 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, characterized in that, The height of the bottom wall of the water storage tank (10) on the side near the connecting plate (7) is lower than the height of 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, characterized in that, It also includes a delivery pipeline connected to a water storage tank (10), and a valve body is provided on the delivery pipeline.

5. The high ammonia nitrogen wastewater treatment device based on ammonia nitrogen separation membrane-reverse osmosis membrane technology according to claim 4, characterized in that, It also includes a reverse osmosis system (1), which includes a first filter (101), a second filter (102), a reverse osmosis mechanism (103), and a connecting box (104). The first filter (101), the second filter (102), the connecting box (104), and the reverse osmosis mechanism (103) are connected in sequence by pipelines. The reverse osmosis mechanism (103) is connected to the water storage tank (10) through a conveying pipeline. The first filter (101) is used to remove large particulate impurities and colloids. The second filter (102) is used to filter out impurities larger than 10 μm. The reverse osmosis mechanism (103) is used to concentrate high ammonia nitrogen wastewater.

Images