MBR membrane biological reaction equipment for chemical wastewater treatment

Abstract

The present application relates to the field of wastewater treatment, especially to a MBR membrane biological reaction equipment for chemical wastewater treatment.The existing technical problem of the MBR membrane biological reactor MBR is that the position of the MBR filter membrane is fixed, it is difficult to maintain a high oxygen content in the wastewater between the MBR filter membranes, and impurities in the wastewater are easily attached to the MBR filter membrane for a long time, resulting in low filtration efficiency.A MBR membrane biological reaction equipment for chemical wastewater treatment comprises a water tank and the like;two water inlet pipes are fixedly connected to the water tank and are symmetrically arranged;an outlet pipe is fixedly connected to the bottom of the water tank and is in communication with the inside of the water tank.The filtration membrane is moved to agitate the wastewater between the filtration membranes, increase the oxygen content in the wastewater, and improve the filtration efficiency of the filtration membrane.The filtration membrane is reciprocally moved by the reciprocally moving sliding plate to remove the impurities attached to the filtration membrane, further improving the filtration efficiency of the filtration membrane.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and more particularly to an MBR membrane bioreactor for treating chemical wastewater. Background Technology

[0002] With the increasing amount of wastewater generated by humans in daily life, wastewater treatment has become a crucial issue for maintaining ecological balance and ensuring human development. With social development and industrial progress, membrane bioreactors (MBRs) have emerged as a novel water treatment technology. MBRs are a new type of wastewater treatment system that organically combines membrane separation technology with biological treatment technology. MBRs have a throttling effect, can retain microorganisms with longer lifecycles, and can achieve deep purification of wastewater. However, in existing MBRs, the fixed position of the MBR filter membrane makes it difficult to maintain a high oxygen content in the wastewater between the membranes. This results in low microbial activity within the MBR membrane and the accumulation of wastewater impurities on the membrane over long periods of filtration, leading to low filtration efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an MBR membrane bioreactor for chemical wastewater treatment that can agitate the wastewater between the filter membranes, thereby increasing the oxygen content in the wastewater and removing wastewater impurities attached to the filter membranes, thus improving the filtration efficiency of the filter membranes.

[0004] The technical solution is as follows: An MBR membrane bioreactor for treating chemical wastewater includes a water tank with two inlet pipes fixedly connected to it, arranged symmetrically. An outlet pipe is fixedly connected to the bottom of the water tank, with one end of the outlet pipe communicating with the inside of the water tank and the other end of the outlet pipe fixedly connected to a water valve. A rotating valve shaft is threadedly connected to the water valve. The water tank is equipped with a filter component, a drive component, and a rubbing component. The filter component is used to filter the wastewater, the drive component assists the filter component to improve its filtration efficiency, and the rubbing component further improves its filtration efficiency.

[0005] As a further preferred embodiment, the filter component includes a mounting frame, two mounting frames are fixedly connected inside the water tank, four sets of sliding frames are slidably connected between the two mounting frames, each set of sliding frames consists of two pairs, for a total of sixteen sliding frames, the spacing between each set of sliding frames is consistent, the spacing between two sliding frames in the same set is the same, sliding plates are slidably connected to several sliding frames, pressure springs are connected between the sliding plates and the sliding frames, a filter membrane is slidably connected between every two opposing sliding plates, a water pump pipe is fixedly connected to the water tank, and connecting hoses are connected between several filter membranes and the water pump pipe.

[0006] As a further preferred embodiment, the driving component includes electric slide rails, with two electric slide rails fixedly connected to each side of the water tank, and sliders slidably connected to each of the four electric slide rails. Two transmission rods are fixedly connected to each slider, and two guide frames are fixedly connected to each transmission rod. Two guide posts are fixedly connected to each sliding frame, and two adjacent guide posts on each set of sliding frames are slidably connected to the adjacent guide frame.

[0007] As a further preferred embodiment, the agitating component includes top rods, with two top rods fixedly connected to each sliding plate. The top rods are slidably connected to the sliding frame and extend out of the water tank. Five contact mesh plates are fixedly connected between the two mounting frames. The two filter membranes on each set of sliding plates form a set, and there are a total of four sets of filter membranes. The five contact mesh plates and the four sets of filter membranes are evenly spaced. Two sets of top plates are fixedly connected to each transmission rod, with two pairs of top plates in each set. The two top plates in the same set are arranged in opposite directions, and one end of each top rod contacts each top plate.

[0008] As a further preferred embodiment, the top plate is corrugated.

[0009] As a further preferred embodiment, the contact wire plate is provided with a number of protrusions.

[0010] As a further preferred embodiment, the system also includes an aeration component. The aeration component is mounted on the water tank and is used to spray air onto the filter membrane, allowing the filter membrane to better contact with oxygen and improving the filtration efficiency of the filter membrane. The aeration component includes a diverter frame, with two diverter frames slidably connected between the two mounting frames. The two diverter frames are symmetrically arranged, and each diverter frame is fixedly connected to an air inlet hose. The two air inlet hoses are fixedly connected to the water tank, and each diverter frame is fixedly connected to two of the transmission rods located on the same side by a connecting rod.

[0011] As a further preferred option, the diverter has several air outlets.

[0012] As a further preferred embodiment, a scraping component is also included. The scraping component is fixedly connected to the water tank and is used to better remove impurities filtered out of the water tank. The scraping component includes sedimentation plates. Two sedimentation plates are rotatably connected to the water tank and are symmetrically arranged. Scrapers are slidably connected to each sedimentation plate. Two spur gears are fixedly connected to each sedimentation plate. A rotating guide ring is fixedly connected to the rotating valve shaft. A rack is slidably connected to the water tank. The rack meshes with four spur gears and is rotatably connected to the rotating guide ring.

[0013] As a further preferred embodiment, the scraper is provided with rollers to reduce the friction between the scraper and the deposition plate.

[0014] The present invention has the following advantages: 1. The transmission rod drives the guide frame to move together. The movement of the guide frame will squeeze the guide column, causing the two guide columns slidably connected on each guide frame to move away from or towards each other. In this way, the filter membrane moves, thereby agitating the wastewater between the filter membranes, increasing the oxygen content in the wastewater, and improving the filtration efficiency of the filter membrane. The reciprocating movement of the top rod will drive the sliding plate to reciprocate, and the reciprocating movement of the sliding plate will drive the filter membrane to reciprocate, thereby rubbing off the wastewater impurities attached to the filter membrane. In this way, the wastewater impurities attached to the filter membrane can be removed, thereby further improving the filtration efficiency of the filter membrane.

[0015] 2. During the reciprocating movement of the transmission rod, the transmission rod drives the diverter to move back and forth through the connecting rod, so that air can be sprayed more evenly to different positions of the filter membrane. In this way, the oxygen content in the wastewater can be increased, thereby increasing the activity of microorganisms in the filter membrane and further improving the filtration efficiency of the filter membrane.

[0016] 3. The rotation of the spur gear will drive the sedimentation plate to rotate, causing the sedimentation plate to rotate towards the bottom of the water tank. During the rotation of the sedimentation plate, the scraper on the sedimentation plate will slide towards the end of the sedimentation plate under the action of gravity, and then scrape off the impurities on the sedimentation plate. The scraped-off impurities will be discharged from the water tank along with the water under the action of water pressure. In this way, the wastewater impurities in the water tank can be discharged more effectively, improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;

[0018] Figure 2This is a schematic diagram of the second three-dimensional structure of the present invention;

[0019] Figure 3 This is a first cross-sectional perspective view of the water tank of the present invention.

[0020] Figure 4 This is a second cross-sectional perspective view of the water tank of the present invention.

[0021] Figure 5 This is a partial three-dimensional structural diagram of the present invention;

[0022] Figure 6 This is a schematic diagram of the first partially split three-dimensional structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the second type of partially split three-dimensional structure of the present invention;

[0024] Figure 8 This is a cross-sectional three-dimensional structural diagram of the sliding frame of the present invention;

[0025] Figure 9 This is a schematic diagram of the third cross-sectional perspective of the water tank of the present invention;

[0026] Figure 10 This is a schematic diagram of the third partial three-dimensional structure of the present invention;

[0027] Figure 11 This is a three-dimensional structural diagram of the guide frame and top plate of the present invention;

[0028] Figure 12 This is a schematic diagram of the first three-dimensional structure of the deposition plate and scraper of the present invention;

[0029] Figure 13 This is a schematic diagram of the second three-dimensional structure of the deposition plate and scraper of the present invention.

[0030] Labels in the diagram: 1-Water tank, 2-Inlet pipe, 3-Outlet pipe, 4-Water valve, 5-Rotating valve shaft, 61-Mounting frame, 62-Sliding frame, 63-Sliding plate, 64-Pressure spring, 65-Filter membrane, 66-Pump pipe, 67-Connecting hose, 71-Electric slide rail, 72-Slider, 73-Transmission rod, 74-Guide frame, 75-Guide column, 81-Top rod, 82-Contact wire plate, 83-Top plate, 91-Diverter frame, 92-Air inlet hose, 93-Connecting rod, 101-Sediment plate, 102-Scraper, 103-Column gear, 104-Rotating guide ring, 105-Gear. Detailed Implementation

[0031] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).

[0032] Example 1: An MBR membrane bioreactor for treating chemical wastewater, such as Figures 1-13 As shown, the system includes a water tank 1, with two inlet pipes 2 fixedly connected to the water tank 1. The two inlet pipes 2 are arranged symmetrically. An outlet pipe 3 is fixedly connected to the bottom of the water tank 1. One end of the outlet pipe 3 communicates with the inside of the water tank 1, and the other end of the outlet pipe 3 is fixedly connected to a water valve 4. A rotating valve shaft 5 is threadedly connected to the water valve 4. The water tank 1 is equipped with a filter component, a drive component, and a rubbing component. The filter component is used to filter wastewater. The drive component is used to assist the filter component and improve its filtration efficiency. The rubbing component is used to further improve the filtration efficiency of the filter component.

[0033] The filter component includes a mounting frame 61. Two mounting frames 61 are fixedly connected inside the water tank 1. Four sets of sliding frames 62 are slidably connected between the two mounting frames 61. Each set of sliding frames 62 consists of two pairs, for a total of sixteen sliding frames 62. The spacing between each set of sliding frames 62 is consistent, and the spacing between two sliding frames 62 in the same set is also consistent. Sliding plates 63 are slidably connected to several sliding frames 62. A pressure spring 64 is connected between the sliding plate 63 and the sliding frame 62. A filter membrane 65 is slidably connected between every two opposing sliding plates 63. The filter membrane 65 is used to purify wastewater. A water pumping pipe 66 is fixedly connected to the water tank 1. A connecting hose 67 is connected between several filter membranes 65 and the water pumping pipe 66. The connecting hose 67 is used to pump water from the filter membrane 65 into the water pumping pipe 66.

[0034] The driving component includes an electric slide rail 71. Two electric slide rails 71 are bolted to both sides of the water tank 1. Slider 72s are slidably connected to each of the four electric slide rails 71. Two transmission rods 73 are welded to each slider 72. Two guide frames 74 are welded to each transmission rod 73. Two guide posts 75 are welded to each sliding frame 62. Two adjacent guide posts 75 on each set of sliding frames 62 are slidably connected to the adjacent guide frame 74. The guide frame 74 is used to drive the guide post 75 to move.

[0035] The agitating component includes a top rod 81. Two top rods 81 are fixedly connected to each sliding plate 63. The top rods 81 are slidably connected to the sliding frame 62. The top rods 81 extend out of the water tank 1. Five contact mesh plates 82 are fixedly connected between the two mounting frames 61. Two filter membranes 65 on each set of sliding plates 63 form a group. There are four groups of filter membranes 65 in total. The five contact mesh plates 82 and the four groups of filter membranes 65 are evenly spaced. Two sets of top plates 83 are fixedly connected to each transmission rod 73. There are two pairs of top plates 83 in each group. The two top plates 83 in the same group are arranged in opposite directions. One end of each top rod 81 contacts each top plate 83.

[0036] The top plate 83 is wavy.

[0037] The contact wire plate 82 is provided with several protrusions, which helps to better rub off wastewater impurities on the filter membrane 65.

[0038] Initially, water valve 4 is closed, and guide post 75 is located in the middle of guide frame 74. The user slides filter membrane 65 onto sliding plate 63, which extends into sliding frame 62. Pressure spring 64 is compressed, and under the action of pressure spring 64, sliding plate 63 clamps filter membrane 65. Then, the user discharges wastewater into water tank 1 through inlet pipe 2. After the filter membrane 65 is soaked in the wastewater in water tank 1, the user starts pumping water through pumping pipe 66. Under pressure, the wastewater in water tank 1 flows towards the center of filter membrane 65. The water purified by filter membrane 65 is guided to pumping pipe 66 through connecting hose 67, thus purifying the wastewater. While filtering the wastewater, the user activates the electric slide rail. 71 drives slider 72, causing slider 72 to slide back and forth along electric slide rail 71. The sliding of slider 72 drives transmission rod 73 to move back and forth. As transmission rod 73 moves closer to water inlet pipe 2, it drives guide frame 74 to move together. The movement of guide frame 74 presses guide post 75, causing the two guide posts 75 slidably connected on each guide frame 74 to move away from each other. The movement of guide post 75 drives the two sliding frames 62 in each group to move away from each other, thereby driving the filter membrane 65 on each sliding frame 62 to move away from each other. As slider 72 moves away from water inlet pipe 2, slider 72 drives transmission rod 73 to move away from water inlet pipe 2. The movement of slider 73 causes guide frame 74 to move closer to the bottom of water tank 1. This movement of guide frame 74 compresses guide post 75, causing the two slidingly connected guide posts 75 on each guide frame 74 to move closer to each other. The movement of guide post 75 causes the two sliding frames 62 in each group to move closer to each other, which in turn causes the filter membrane 65 on each sliding frame 62 to move closer to each other. The reset of slider 72 causes transmission rod 73 to reset, which in turn causes guide frame 74 to reset, which in turn causes guide post 75 to reset, and the reset of guide post 75 causes sliding frame 62 and filter membrane 65 to reset. In this way, the filter membrane 65 moves, thus agitating the wastewater between the filter membranes 65, making the wastewater... The increased oxygen content in the water improves the filtration efficiency of the filter membrane 65. During the movement of the drive rod 73, it drives the top plate 83 to reciprocate. The movement of the top plate 83 compresses the top rod 81, causing the sliding plate 63 to extend into or out of the sliding frame 62. As the two filter membranes 65 on each set of sliding frames 62 move away from each other, they come into contact with the contact mesh plate 82. The continued movement of the drive rod 73 does not move the filter membranes 65. Instead, the drive rod 73 drives the top plate 83 to continue moving, causing it to strike the top rod 81, resulting in the top rod 81 reciprocating. This reciprocating movement of the top rod 81 drives the sliding plate 63 to reciprocate, which in turn drives the filter membranes 65 to reciprocate.The reciprocating movement of the filter membrane 65 causes it to rub against the contact mesh plate 82, thereby removing wastewater impurities from the filter membrane. As the two filter membranes 65 on each set of sliding frames 62 move closer to each other, they come into contact. The transmission rod 73 continues to move, causing the top plate 83 to continue hitting the top rod 81. The reciprocating movement of the top rod 81 drives the sliding plate 63 to reciprocate, which in turn drives the filter membranes 65 to reciprocate, causing the two filter membranes 65 on each set of sliding frames 62 to rub against each other. This process involves rubbing off wastewater impurities adhering to the filter membrane 65, thereby removing these impurities and improving the filtration efficiency of the filter membrane 65. During cleaning, the user stops adding wastewater to the water tank 1 and rotates the valve shaft to open the water valve 4, draining the wastewater and impurities from the water tank 1. After the water tank 1 is empty, the user pulls the filter membrane 65 out between the sliding plates 63. The pressure spring 64 resets, causing the sliding plates 63 to reset as well. The user can then remove and clean the removed filter membrane 65.

[0039] Example 2: Based on Example 1, such as Figures 3-9 As shown, it also includes an aeration component. The aeration component is provided on the water tank 1. The aeration component is used to spray air onto the filter membrane 65, so that the filter membrane 65 can better contact with oxygen and improve the filtration efficiency of the filter membrane 65. The aeration component includes a diverter frame 91. Two diverter frames 91 are slidably connected between the two mounting frames 61. The two diverter frames 91 are symmetrically arranged. An air inlet hose 92 is fixedly connected to each of the two diverter frames 91. The two air inlet hoses 92 are fixedly connected to the water tank 1. Each diverter frame 91 is fixedly connected to two of the transmission rods 73 located on the same side. The transmission rods 73 can drive the diverter frame 91 to move through the connecting rods 93, so that the air can be sprayed more evenly to different positions of the filter membrane 65.

[0040] The air distribution frame 91 has several air outlets, which helps to disperse and spray air toward the filter membrane 65.

[0041] During wastewater treatment, the user introduces air into the air inlet hose 92. The air then enters the distribution frame 91 through the air inlet hose 92 and is sprayed onto the filter membrane 65 through the distribution frame 91. As the drive rod 73 moves back and forth, it drives the distribution frame 91 to move back and forth through the connecting rod 93, so that the air can be sprayed more evenly onto different positions of the filter membrane 65. In this way, the oxygen content in the wastewater can be increased, thereby increasing the activity of microorganisms in the filter membrane 65 and further improving the filtration efficiency of the filter membrane 65.

[0042] Example 3: Based on Example 2, such as Figures 3-13 As shown, it also includes a scraping component, which is fixedly connected to the water tank 1. The scraping component is used to better remove the impurities filtered out in the water tank 1. The scraping component includes a sedimentation plate 101. Two sedimentation plates 101 are rotatably connected to the water tank 1. The two sedimentation plates 101 are symmetrically arranged. Scrapers 102 are slidably connected to both sedimentation plates 101. The scrapers 102 are used to scrape off the wastewater impurities on the sedimentation plates 101. Two spur gears 103 are fixedly connected to both sedimentation plates 101. A rotating guide ring 104 is fixedly connected to the rotating valve shaft 5. A rack 105 is slidably connected to the water tank 1. The rack 105 meshes with four spur gears 103. The rack 105 and the rotating guide ring 104 are rotatably connected. When the rack 105 moves, it meshes with the spur gears 103, causing the spur gears 103 to rotate. The rotation of the spur gears 103 drives the sedimentation plates 101 to rotate.

[0043] The scraper 102 is equipped with rollers to reduce the friction between the scraper 102 and the deposition plate 101.

[0044] During wastewater treatment, impurities filtered from the wastewater will settle on the sedimentation plate 101. When the user opens the water valve 4, rotating the rotating valve shaft 5 causes it to extend beyond the water valve 4. This movement of the rotating valve shaft 5 drives the rotating guide ring 104 to move away from the water tank 1. The rotating guide ring 104 then drives the rack 105 to move, which meshes with the spur gear 103, causing it to rotate. This rotation of the spur gear 103 drives the sedimentation plate 101 to rotate, causing it to move closer to the bottom of the water tank 1. During this rotation, the scraper 102 on the sedimentation plate 101... Under the influence of gravity, the impurities on the sedimentation plate 101 slide towards the end that is close to each other, and are scraped off. The scraped impurities are discharged from the water tank 1 along with the water under the action of water pressure. When the water valve 4 is closed, the user rotates the rotating valve shaft 5 in the opposite direction, so that the rotating valve shaft 5 extends into the water valve 4. Rotating the valve shaft 5 will drive the rack 105 to reset. The reset of the rack 105 will drive the spur gear 103 to reset in reverse. The reset of the spur gear 103 will drive the sedimentation plate 101 to reset. The scraper 102 on the sedimentation plate 101 will reset under the action of gravity. In this way, the wastewater impurities in the water tank 1 can be discharged from the water tank 1 more effectively, improving work efficiency.

[0045] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An MBR membrane bioreactor for treating chemical wastewater, characterized in that it includes: There is a water tank (1), and two water inlet pipes (2) are fixedly connected to the water tank (1). The two water inlet pipes (2) are arranged symmetrically. A water outlet pipe (3) is fixedly connected to the bottom of the water tank (1). One end of the water outlet pipe (3) is connected to the inside of the water tank (1). A water valve (4) is fixedly connected to the other end of the water outlet pipe (3). A rotating valve shaft (5) is connected to the water valve (4) by a thread. The water tank (1) is provided with a filter component, a drive component and a rubbing component. The filter component is used to filter wastewater. The drive component is used to assist the filter component. The rubbing component is used to rub off the wastewater impurities attached to the filter component. The filter component includes a mounting frame (61), two mounting frames (61) are fixedly connected inside the water tank (1), four sets of sliding frames (62) are slidably connected between the two mounting frames (61), each set of sliding frames (62) consists of two pairs, for a total of sixteen sliding frames (62), the spacing between each set of sliding frames (62) is the same, the spacing between two sliding frames (62) in the same set is the same, a sliding plate (63) is slidably connected to several sliding frames (62), a pressure spring (64) is connected between the sliding plate (63) and the sliding frame (62), a filter membrane (65) is slidably connected between every two opposite sliding plates (63), a water pump pipe (66) is fixedly connected to the water tank (1), and a connecting hose (67) is connected between several filter membranes (65) and the water pump pipe (66). The driving component includes an electric slide rail (71). Two electric slide rails (71) are fixedly connected to both sides of the water tank (1). Slider (72) is slidably connected to each of the four electric slide rails (71). Two transmission rods (73) are fixedly connected to each slider (72). Two guide frames (74) are fixedly connected to each transmission rod (73). Two guide posts (75) are fixedly connected to each sliding frame (62). The two adjacent guide posts (75) on each set of sliding frames (62) are slidably connected to the adjacent guide frame (74). The transmission rods (73) will drive the guide frames (74) to move together. The movement of the guide frames (74) will squeeze the guide posts (75), so that the two guide posts (75) slidably connected on each guide frame (74) will move away from each other or closer to each other. The agitating component includes a top rod (81). Two top rods (81) are fixedly connected to each sliding plate (63). The top rods (81) and the sliding frame (62) are slidably connected. The top rods (81) extend out of the water tank (1). Five contact mesh plates (82) are fixedly connected between the two mounting frames (61). Two filter membranes (65) on each set of sliding plates (63) form a group. There are four groups of filter membranes (65). The five contact mesh plates (82) and the four groups of filter membranes (65) are evenly spaced. Each of the transmission rods (73) is fixedly connected to two sets of top plates (83). There are two pairs of top plates (83) in each set. The two top plates (83) in the same set are arranged in opposite directions. One end of each top rod (81) is in contact with each top plate (83). The top plate (83) is wavy. During the movement of the transmission rod (73), the transmission rod (73) will drive the top plate (83) to move back and forth. The movement of the top plate (83) will squeeze the top rod (81). The top rod (81) being squeezed will drive the sliding plate (63) to extend into or out of the sliding frame (62).

2. The MBR membrane bioreactor for treating chemical wastewater as described in claim 1, characterized in that, The contact wire plate (82) is provided with several protrusions.

3. The MBR membrane bioreactor for treating chemical wastewater as described in claim 2, characterized in that, It also includes an aeration component, which is provided on the water tank (1). The aeration component is used to spray air onto the filter membrane (65). The aeration component includes a diverter frame (91). Two diverter frames (91) are slidably connected between the two mounting frames (61). The two diverter frames (91) are symmetrically arranged. An air inlet hose (92) is fixedly connected to each of the two diverter frames (91). The two air inlet hoses (92) are fixedly connected to the water tank (1). A connecting rod (93) is fixedly connected between each diverter frame (91) and two of the transmission rods (73) located on the same side.

4. The MBR membrane bioreactor for treating chemical wastewater as described in claim 3, characterized in that, The diverter (91) has several air outlets.

5. The MBR membrane bioreactor for chemical wastewater treatment as described in claim 4, characterized in that, It also includes a scraping component, which is provided on the water tank (1). The scraping component is used to scrape off the impurities filtered out in the water tank (1). The scraping component includes a sedimentation plate (101). Two sedimentation plates (101) are rotatably connected to the water tank (1). The two sedimentation plates (101) are symmetrically arranged. Scrapers (102) are slidably connected to both sedimentation plates (101). Two spur gears (103) are fixedly connected to both sedimentation plates (101). A rotating guide ring (104) is fixedly connected to the rotating valve shaft (5). The water tank (1) is slidably connected to... There is a rack (105) that meshes with four spur gears (103). The rack (105) is rotatably connected to the rotating guide ring (104). Rotating the rotating valve shaft (5) causes the rotating valve shaft (5) to extend out of the water valve (4). The movement of the rotating valve shaft (5) causes the rotating guide ring (104) to move away from the water tank (1). The movement of the rotating guide ring (104) causes the rack (105) to move. The movement of the rack (105) meshes with the spur gears (103), causing the spur gears (103) to rotate. The rotation of the spur gears (103) causes the sedimentation plate (101) to rotate.

6. The MBR membrane bioreactor for chemical wastewater treatment as described in claim 5, characterized in that, The scraper (102) is equipped with rollers.

Images