A high-efficiency electrically driven membrane desalination wastewater treatment device

Abstract

The utility model provides a kind of wastewater treatment device for high-efficiency electric drive membrane desalination, belong to wastewater treatment technical field, including support foot, further include: separation tank, fixed in the top of support foot, the side fixed with salt water valve at the bottom end of separation tank, filter box, fixed in the top of separation tank, the side fixed with inlet at the top of filter box, blowdown structure, set in the inside one side of filter box, filter structure, set in the inside of filter box. In the utility model, the impurities in wastewater are intercepted by filter membrane, the rotation of the rotating shaft driven by the transmission shaft makes the scraper clean the impurities attached to the inner wall of the filter membrane, thereby achieving the efficient filtering function of the device, the contact area with wastewater is increased by the funnel-shaped filter membrane, the filtration capacity per unit time is improved, and the attached impurities on the membrane can be removed in time, avoiding the accumulation of impurities causing membrane hole blockage, prolonging the service life of the filter membrane.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a high-efficiency electrically driven membrane desalination wastewater treatment device. Background Technology

[0002] Due to the escalating global water shortage and the continuous increase in industrial and domestic wastewater discharge, there is an urgent need for efficient and energy-saving wastewater treatment and resource recovery technologies. Therefore, a high-efficiency electro-driven membrane desalination wastewater treatment device has been established. This device utilizes the high-efficiency desalination characteristics of electro-driven membrane technology to achieve rapid separation of salts and pollutants in wastewater. While purifying wastewater and improving the water resource recycling rate, it also provides a stable source of reclaimed water for industrial production and daily life, helping to alleviate the contradiction between water supply and demand.

[0003] Chinese patent CN221420920U discloses a dialysis desalination device, belonging to the field of dialysis desalination technology. It includes a base plate, a dialysis desalinator fixedly connected to its upper surface, a top plate fixedly connected to the upper surface of the dialysis desalinator, and a water storage tank fixedly connected to its back. A filter tube is fixedly embedded in the upper surface of the water storage tank, with a coarse filter plate and a fine filter plate fixedly installed on the inner ring of the filter tube. An electric heating plate is fixedly embedded in the inner bottom wall of the water storage tank. A pump is fixedly installed on the upper surface of the water storage tank, with a pumping pipe fixedly connected to its input end. The bottom end of the pumping pipe penetrates the water storage tank and extends into its interior. A cathode plate and an anode plate are fixedly embedded in the left and right sides of the dialysis desalinator, respectively. This dialysis desalination device prevents contamination of the ion exchange membrane inside the dialysis desalinator and improves the desalination efficiency of the ion exchange membrane for wastewater.

[0004] The aforementioned patent still has the following shortcomings: Since the device only pre-treats wastewater through coarse and fine filter plates in the water storage tank, the filtration structure is simple. When treating wastewater containing a lot of suspended solids, colloids and other impurities, the impurities are easy to accumulate on the surface of the filter plates and are difficult to clean, which makes the pores of the filter plates easy to be blocked. This not only reduces the wastewater pre-treatment efficiency and prolongs the overall treatment cycle, but also makes the wastewater entering the dialysis desalination unit still carry residual impurities, indirectly increasing the risk of ion exchange membrane fouling. Utility Model Content

[0005] This invention provides a high-efficiency electrically driven membrane desalination wastewater treatment device that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: An embodiment of this utility model provides a high-efficiency electrically driven membrane desalination wastewater treatment device, including support legs, and further comprising: A separation box is fixed to the top of the support leg. A brine valve is fixed to one side of the bottom of the separation box, and a brine pipe is fixed to the bottom of the brine valve. A fresh water valve is fixed to the other side of the top of the separation box, and a fresh water pipe is fixed to the bottom of the fresh water valve. An anode plate is fixed on one side inside the separation chamber, a cathode plate is fixed on the other side inside the separation chamber, and an electrically driven membrane is fixed at the bottom inside the separation chamber. A filter box is fixed to the top of the separation box, and a water inlet is fixed to one side of the top of the filter box; The drainage structure is located on one side inside the filter box and is used to discharge impurities and foreign objects from inside the filter box. A filter structure is disposed inside a filter box. The filter structure includes a filter membrane fixed on the inner side wall of the filter box, a rotating shaft rotatably connected to the top of the filter box, a scraper fixed on the outer side wall of the rotating shaft, a connecting sleeve fixed to the bottom end of the filter membrane, and a rotating assembly provided at the bottom end of the rotating shaft. The booster pump is installed on the top of one side of the separator.

[0007] With the above technical solution, wastewater enters the filter box through the inlet. The wastewater is filtered by the filter structure. Then, the booster pump inputs the wastewater into the separation tank. At this time, the anode plate and cathode plate are energized to generate an electric field. The electric field force drives the ions in the wastewater to move towards the corresponding electrodes. At the same time, the electrically driven membrane performs the separation function, allowing specific ions to pass through, so that the salt and water in the wastewater are gradually separated. When the separation process reaches a certain stage, the fresh water valve is opened and the separated fresh water is discharged through the fresh water pipe. The brine valve is opened and the concentrated brine is discharged through the brine pipe.

[0008] Furthermore, the sewage discharge structure includes a sewage discharge pipe fixed inside one side of the filter box, a drive motor fixed to one side of the sewage discharge pipe, a transmission shaft rotatably connected inside the sewage discharge pipe to the end of the output shaft of the drive motor, a spiral auger fixed to the outside of the transmission shaft, and a sewage discharge valve installed at the bottom of the sewage discharge pipe away from the filter box.

[0009] The above technical solution uses a drive motor to rotate the transmission shaft, which causes the auger to transport impurities from the connecting sleeve to the drain pipe. By opening the drain valve, the impurities are discharged outside the device through the drain pipe and the drain valve.

[0010] Furthermore, the rotating assembly includes a first bevel gear fixed to the outer side of the bottom end of the rotating shaft, a second bevel gear meshing with the first bevel gear fixed to the outer side of the transmission shaft, and a baffle fixed to one side inside the sewage pipe.

[0011] The above technical solution intercepts impurities and foreign objects in wastewater through a filter membrane. The drive shaft drives the rotating shaft to rotate, causing the scraper to clean the impurities attached to the inner wall of the filter membrane, thereby ensuring the stable filtration efficiency of the filter membrane.

[0012] Furthermore, the rotating shaft passes through the baffle and is connected to the first bevel gear, and the rotating shaft and the baffle form a rotating structure.

[0013] Through the above technical solution, the baffle can divide the space inside the filter box, preventing impurities from entering the bevel gear area. At the same time, the transmission structure ensures the stable rotation of the shaft, provides reliable support for the scraper to clean the filter membrane, and ensures the smooth operation of the rotating components.

[0014] Furthermore, the frontal cross-section of the filter membrane has a funnel-shaped inclined structure, and the scraper is slidably connected to the inner wall of the filter membrane.

[0015] Through the above technical solutions, the funnel-shaped inclined surface increases the contact area between the filter membrane and the wastewater, thereby improving the filtration efficiency. The sliding connection allows the scraper to thoroughly clean impurities from the membrane wall, preventing clogging and ensuring that the filter membrane continues to function stably.

[0016] Furthermore, the scraper is provided in three sets, which are arranged in a ring at equal intervals on the outside of the rotating shaft.

[0017] Through the above technical solution, three sets of equally spaced scrapers can simultaneously clean the inner wall of the filter membrane from multiple directions, reducing blind spots, improving the efficiency of impurity removal, and shortening the cleaning time per cycle to a certain extent.

[0018] Furthermore, the drain pipe extends into the interior of the filter box and connects to the connecting sleeve, and the drive shaft and the baffle form a rotating structure. Through the above technical solution, the connection between the sewage pipe and the connecting sleeve facilitates the precise entry of impurities into the sewage pipe, and the transmission structure of the drive shaft and the baffle ensures stable transmission, providing support for the spiral auger to transport impurities and ensuring smooth sewage discharge.

[0019] The above-described solution of this utility model has at least the following beneficial effects: This invention uses a filter membrane to intercept impurities and foreign objects in wastewater. A drive shaft drives a rotating shaft to rotate, causing a scraper to clean the impurities attached to the inner wall of the filter membrane. This achieves the high-efficiency filtration function of the device. The funnel-shaped filter membrane increases the contact area with wastewater, thereby increasing the filtration capacity per unit time. At the same time, it can promptly remove impurities attached to the membrane, preventing impurities from accumulating and clogging the membrane pores, and extending the service life of the filter membrane.

[0020] This invention uses a drive motor to rotate the transmission shaft, which causes the spiral auger to transport impurities from the connecting sleeve to the drain pipe. By opening the drain valve, the impurities are discharged outside the device through the drain pipe and the drain valve, thus realizing the impurity discharge function of this device. This prevents impurities from accumulating inside the device and causing blockages, ensuring the continuity of the overall processing flow and reducing downtime caused by cleaning up accumulated impurities. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 A three-dimensional cross-sectional structural diagram of the filter structure provided by this utility model; Figure 4 Provided by this utility model Figure 3 A magnified schematic diagram of a partial cross-section at point A in the middle.

[0022] Explanation of reference numerals in the attached figures: 1. Support feet; 2. Separation box; 3. Filter box; 4. Inlet; 5. Sewage discharge structure; 501. Sewage pipe; 502. Spiral auger; 503. Drive motor; 504. Sewage valve; 505. Drive shaft; 6. Brine pipe; 7. Freshwater pipe; 8. Booster pump; 9. Filter structure; 901. Filter membrane; 902. Rotating shaft; 903. Scraper; 904. Connecting sleeve; 905. Baffle; 906. First bevel gear; 907. Second bevel gear; 10. Anode plate; 11. Cathode plate; 12. Electrically driven membrane; 13. Freshwater valve; 14. Brine valve. Detailed Implementation

[0023] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0024] like Figures 1 to 4 As shown, an embodiment of this utility model provides a high-efficiency electrically driven membrane desalination wastewater treatment device, including a support leg 1, and further comprising: Separation box 2 is fixed to the top of support foot 1. A brine valve 14 is fixed to one side of the bottom of separation box 2. A brine pipe 6 is fixed to the bottom of brine valve 14. A fresh water valve 13 is fixed to the other side of the top of separation box 2. A fresh water pipe 7 is fixed to the bottom of fresh water valve 13. An anode plate 10 is fixed on one side inside the separation box 2, a cathode plate 11 is fixed on the other side inside the separation box 2, and an electrically driven membrane 12 is fixed at the bottom inside the separation box 2. The filter box 3 is fixed to the top of the separation box 2, and the water inlet 4 is fixed to one side of the top of the filter box 3. The sewage discharge structure 5 is located on one side inside the filter box 3 and is used to discharge impurities and foreign objects inside the filter box 3. The filter structure 9 is set inside the filter box 3. The filter structure 9 includes a filter membrane 901 fixed on the inner side wall of the filter box 3, a rotating shaft 902 rotatably connected to the top of the filter box 3, a scraper 903 fixed on the outer side wall of the rotating shaft 902, a connecting sleeve 904 fixed at the bottom of the filter membrane 901, and a rotating component at the bottom of the rotating shaft 902. The booster pump 8 is installed on the top of one side of the separator 2.

[0025] In this embodiment of the invention, when the device is started, wastewater enters the filter box 3 through the inlet 4. The wastewater entering the filter box 3 is filtered by the filter structure 9. Then, the booster pump 8 starts working to accelerate the entry of wastewater into the separation box 2. At this time, the anode plate 10 and the cathode plate 11 are energized to generate an electric field. The electric field force drives the ions in the wastewater to move towards the corresponding electrodes. At the same time, the electrically driven membrane 12 performs a separation function, allowing specific ions to pass through, so that the salt and water in the wastewater are gradually separated. When the separation process reaches a certain stage, the fresh water valve 13 is opened, and the separated fresh water is discharged through the fresh water pipe 7. The brine valve 14 is opened, and the concentrated brine is discharged through the brine pipe 6, thereby completing the desalination treatment of the wastewater.

[0026] like Figures 1 to 4 As shown, the rotating assembly includes a first bevel gear 906 fixed to the outer side of the bottom end of the rotating shaft 902, a second bevel gear 907 fixed to the outer side of the transmission shaft 505 and meshing with the first bevel gear 906, a baffle 905 fixed to one side inside the sewage pipe 501, the rotating shaft 902 passing through the baffle 905 and connecting with the first bevel gear 906, and the rotating shaft 902 and the baffle 905 form a rotating structure, the front cross-section of the filter membrane 901 is a funnel-shaped inclined structure, the scraper 903 is slidably connected to the inner sidewall of the filter membrane 901, and three sets of scrapers 903 are provided, the three sets of scrapers 903 are arranged in a ring at equal intervals on the outer side of the rotating shaft 902.

[0027] In this embodiment of the present invention, when wastewater enters the filter box 3, the impurities and foreign objects in the wastewater are intercepted on the inner side of the filter membrane 901 through the filtration effect of the filter membrane 901, which reduces the impurities entering the separation box 2 to a certain extent and avoids contamination of the electrically driven membrane 12. The drive motor 503 is started, and the transmission shaft 505 drives the rotating shaft 902 to rotate through the second bevel gear 907 and the first bevel gear 906. The rotating shaft 902 drives the scraper 903 to move on the inner wall of the filter membrane 901, so that the scraper 903 cleans the impurities attached to the inner wall of the filter membrane 901, avoids the accumulation of impurities and the clogging of the filter membrane 901, thereby ensuring the stable filtration efficiency of the filter membrane 901, extending the service life of the filter membrane 901 to a certain extent, and ensuring the continuous and efficient operation of the wastewater pretreatment process.

[0028] like Figures 1 to 4 As shown, the sewage discharge structure 5 includes a sewage discharge pipe 501 fixed inside one side of the filter box 3. A drive motor 503 is fixed to one side of the sewage discharge pipe 501. A transmission shaft 505 connected to the output shaft end of the drive motor 503 is rotatably connected inside the sewage discharge pipe 501. A spiral auger 502 is fixed to the outside of the transmission shaft 505. A sewage discharge valve 504 is installed on the bottom end of the sewage discharge pipe 501 away from the filter box 3. The sewage discharge pipe 501 extends into the interior of the filter box 3 and is connected to the connecting sleeve 904. A rotating structure is formed between the transmission shaft 505 and the baffle 905.

[0029] In this embodiment of the utility model, the drive motor 503 drives the transmission shaft 505 to rotate, causing the spiral auger 502 to rotate inside the sewage pipe 501. Through the rotation of the spiral auger 502, impurities in the connecting sleeve 904 are transported to the sewage pipe 501. By opening the sewage valve 504, the impurities are discharged to the outside of the device through the sewage pipe 501 and the sewage valve 504, thereby realizing the timely cleaning of impurities, providing good conditions for the filtration and treatment of wastewater, and reducing the frequency of device shutdown for cleaning due to impurity accumulation, ensuring the continuous operation of the overall device.

[0030] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A high-efficiency electrically driven membrane desalination wastewater treatment device, comprising support legs (1), characterized in that, Also includes: Separation box (2) is fixed to the top of support foot (1). A brine valve (14) is fixed to one side of the bottom of the separation box (2). A brine pipe (6) is fixed to the bottom of the brine valve (14). A fresh water valve (13) is fixed to the other side of the top of the separation box (2). A fresh water pipe (7) is fixed to the bottom of the fresh water valve (13). An anode plate (10) is fixed on one side inside the separation box (2), a cathode plate (11) is fixed on the other side inside the separation box (2), and an electrically driven membrane (12) is fixed at the bottom inside the separation box (2). A filter box (3) is fixed at the top of the separation box (2), and an inlet (4) is fixed on one side of the top of the filter box (3). The sewage discharge structure (5) is set on one side inside the filter box (3) to discharge impurities and foreign objects inside the filter box (3); A filter structure (9) is disposed inside a filter box (3). The filter structure (9) includes a filter membrane (901) fixed on the inner wall of the filter box (3). A rotating shaft (902) is rotatably connected to the top of the filter box (3). A scraper (903) is fixed on the outer wall of the rotating shaft (902). A connecting sleeve (904) is fixed to the bottom of the filter membrane (901). A rotating component is provided at the bottom of the rotating shaft (902). The booster pump (8) is installed on the top of one side of the separator (2).

2. The high-efficiency electrically driven membrane desalination wastewater treatment device according to claim 1, characterized in that, The sewage discharge structure (5) includes a sewage discharge pipe (501) fixed inside one side of the filter box (3). A drive motor (503) is fixed on one side of the sewage discharge pipe (501). A transmission shaft (505) connected to the output shaft end of the drive motor (503) is rotatably connected inside the sewage discharge pipe (501). A spiral auger (502) is fixed on the outside of the transmission shaft (505). A sewage discharge valve (504) is installed on the bottom end of the sewage discharge pipe (501) away from the filter box (3).

3. The wastewater treatment device for high-efficiency electrically driven membrane desalination according to claim 2, characterized in that, The rotating assembly includes a first bevel gear (906) fixed on the outer side of the bottom end of the rotating shaft (902), a second bevel gear (907) fixed on the outer side of the transmission shaft (505) and meshing with the first bevel gear (906), and a baffle (905) fixed on one side inside the sewage pipe (501).

4. The wastewater treatment device for high-efficiency electrically driven membrane desalination according to claim 2, characterized in that, The rotating shaft (902) passes through the baffle (905) and is connected to the first bevel gear (906), and the rotating shaft (902) and the baffle (905) form a rotating structure.

5. A high-efficiency electrically driven membrane desalination wastewater treatment device according to claim 2, characterized in that, The filter membrane (901) has a funnel-shaped inclined cross-section when viewed from the front, and the scraper (903) is slidably connected to the inner wall of the filter membrane (901).

6. The wastewater treatment device for high-efficiency electrically driven membrane desalination according to claim 2, characterized in that, The scraper (903) is provided in three sets, and the three sets of scraper (903) are arranged in a ring at equal intervals on the outside of the rotating shaft (902).

7. A high-efficiency electrically driven membrane desalination wastewater treatment device according to claim 2, characterized in that, The drain pipe (501) extends into the interior of the filter box (3) and is connected to the connecting sleeve (904). The drive shaft (505) and the baffle (905) form a rotating structure.

Images