Sludge film composite sewage treatment process suspended filler interception fluidization method

Abstract

The present application relates to a kind of sludge film composite sewage treatment process suspended filler interception fluidization method, belong to sewage treatment technical field.The water inlet side of suspended filler interception device is equipped with filler separation device, the suspended filler interception device includes interception screen, the suspended filler that the filler separation device is scraped on interception screen and is accumulated, avoid suspended filler to block interception screen in turn influence sewage treatment efficiency, the filler separation device includes rectangular backplate, the front of the rectangular backplate is provided with wave plate along its length direction, the wave plate includes multiple arc and continuous wave crest section wave crest section and wave trough section wave trough section, the present application has the following beneficial effects: by filler separation device, suspended filler accumulated on interception screen is recycled and transported to water inlet area, on the one hand, it ensures that filler does not flow out of pool body, on the other hand, it can also ensure the patency of interception screen, can maintain effective water flow, ensure the safe operation of sewage plant.

Description

Technical Field

[0001] This invention relates to a suspended filler interception fluidization method for a mud-film composite wastewater treatment process, belonging to the field of wastewater treatment technology. Background Technology

[0002] MBBR (Metal-Based Biofilm Batch Reactor) is a commonly used biodegradation process for treating organic matter and ammonia nitrogen in wastewater. This process utilizes activated packing material as a carrier to immobilize microorganisms on its surface, forming a biofilm. The MBBR process employs a large amount of activated packing material, providing a large surface area for microbial attachment and allowing for more efficient microbial growth, thereby improving the degradation efficiency of organic matter and ammonia nitrogen in the wastewater. Since the suspended packing material circulates and fluidizes in a certain area within the tank, intercepting screens are necessary to prevent packing material loss.

[0003] Patent No. 201920250918.X discloses a device for preventing the accumulation and sedimentation of mobile packing material. A perforated aeration device is installed at the bottom of the aerobic tank. The perforated aeration device includes a second blower, a second aeration pipe, and several perforated aeration columns. The second blower is connected to the second aeration pipe. The perforated aeration column includes a column tube fixed inside the aerobic tank. An air passage is provided inside the column tube. The lower end of the air passage is connected to the second aeration pipe, and the upper end opens at the top of the perforated aeration column. The upper opening of the air passage faces downwards, allowing air bubbles blown out from the air passage to pass over the microporous aeration heads, disturbing the water flow near the microporous aeration heads.

[0004] Current technology is not comprehensive and has the following drawbacks: the intercepting screen often gets clogged during operation. Generally, the screen is brushed by air through perforation and aeration, but the energy consumption is very high and the screen needs to be manually washed frequently after water is stopped, which affects normal production operation.

[0005] To address one of the aforementioned problems, there is an urgent need for a suspended filler fluidization method for mud-film composite wastewater treatment. Summary of the Invention

[0006] Based on the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to achieve the circulation and transportation of suspended filler material accumulated on the intercepting screen to the inlet area through a filler separation device. In this way, on the one hand, the filler material will not flow out of the tank, and on the other hand, the intercepting screen can be kept unobstructed to maintain an effective flow rate, reduce the probability of liquid level difference on both sides of the effluent screen, and ensure the safe operation of the sewage treatment plant. To this end, a suspended filler material interception fluidization method for mud membrane composite sewage treatment process is provided.

[0007] The suspended filler interception fluidization method for mud-film composite wastewater treatment according to the present invention is characterized in that: a filler separation device is installed on the inlet side of the suspended filler interception device. The suspended filler interception device includes an interception screen. The filler separation device scrapes off the suspended filler accumulated on the interception screen to prevent the suspended filler from clogging the interception screen and thus affecting the wastewater treatment efficiency. The filler separation device includes a rectangular back plate. A corrugated plate is provided on the front of the rectangular back plate along its length direction. The corrugated plate includes multiple arc-shaped and continuous crest segments and trough segments. The crest segments and the rectangular back plate form an upper collection area for converging suspended filler, and the trough segments and the rectangular back plate form a lower collection area for converging suspended filler. Horizontal main horizontal pipes A and B are respectively provided on the upper and lower sides of the rectangular back plate along its length direction. The horizontal main horizontal pipe A is connected to... The horizontal main horizontal pipe B is connected to multiple upper-level connecting branch pipes, and multiple lower-level connecting branch pipes are connected to the horizontal main horizontal pipe B. The other end of each upper-level connecting branch pipe is fixed to the back of the rectangular back plate and connected to the corresponding upper collection area. The other end of each lower-level connecting branch pipe is fixed to the back of the rectangular back plate and connected to the corresponding lower collection area. The two ends of the horizontal main horizontal pipe A are sealed, and the middle is connected to the bypass feeding pipe A. The two ends of the horizontal main horizontal pipe B are sealed, and the middle is connected to the bypass feeding pipe B. The bypass feeding pipe A is connected to the bypass feeding pipe B through a tee. The upper end of the bypass feeding pipe B is connected to the folded conveying pipe. The other end of the folded conveying pipe is connected to the inlet of the spiral centrifugal pump. The intercepting screen is installed on the pool body. The pool body is equipped with a back plate lifting drive assembly that drives the rectangular back plate to lift and lower, and a guide assembly that guides the lifting and lowering of the rectangular back plate.

[0008] The suspended filler material accumulated on the intercepting screen is circulated and transported to the inlet area through the filler separation device. This ensures that the filler material does not flow out of the tank and also ensures the smooth flow of the intercepting screen, maintaining an effective flow rate and reducing the probability of liquid level difference on both sides of the outlet screen, thus ensuring the safe operation of the sewage treatment plant.

[0009] Furthermore, the combined design of the corrugated plate and the rectangular back plate allows the crest sections and the rectangular back plate to form an upper collection area for the suspended filler material, while the trough sections and the rectangular back plate form a lower collection area. This works in conjunction with the spiral centrifugal pump, which utilizes a spiral impeller and combines the characteristics of both centrifugal and positive displacement pumps. In particular, its spacious flow channel prevents slurry accumulation and clogging within the pump body, ensuring smooth flow. Additionally, it allows the suspended filler material to pass through without clogging, conveying it away from the intercepting screen and reducing the likelihood of the cleaned-off filler material re-accumulating on the screen.

[0010] Preferably, the backplate lifting drive assembly drives the rectangular backplate upward, and the corrugated plate scrapes off the suspended filler material accumulated on the surface of the intercepting screen, which then collects in the lower collection area. After the spiral centrifugal pump is turned on, the suspended filler material collected in the lower collection area enters the horizontal main horizontal pipe B through the lower connecting branch pipe, and then enters the spiral centrifugal pump through the bypass feeding pipe B and the folded conveying pipe. The backplate lifting drive assembly drives the rectangular backplate downward, and the corrugated plate scrapes off the suspended filler material accumulated on the surface of the intercepting screen, which then collects in the upper collection area. After the spiral centrifugal pump is turned on, the suspended filler material collected in the upper collection area enters the horizontal main horizontal pipe A through the upper connecting branch pipe, and then enters the spiral centrifugal pump through the bypass feeding pipe A and the folded conveying pipe. Each outlet of the spiral centrifugal pump is equipped with a drain pipe, which transports the suspended filler material mixed in the sewage away from the intercepting screen.

[0011] Preferably, the back panel lifting drive assembly includes a left support column and a right support column arranged parallel to each other and vertically. A support beam is vertically connected to the top of each of the left and right support columns. A left drive shaft and a right drive shaft are symmetrically mounted on the lifting drive unit on the support beam. The other end of the left drive shaft is connected to a right-angle transmission reducer A at the end of the support beam. A left upper sprocket is mounted on the power output shaft of the right-angle transmission reducer A. The other end of the right drive shaft is connected to a right-angle transmission reducer B at the end of the support beam. The right-side upper sprocket is mounted on the power output shaft of the right-angle transmission reducer B. The left-side lower sprocket is mounted on the bottom end of the left-side drive chain. The upper end of the left-side drive chain passes over the left-side upper sprocket and is fixedly connected to the rectangular back plate. The lower end of the left-side drive chain passes under the left-side lower sprocket and is fixedly connected to the rectangular back plate. The right-side lower sprocket is mounted on the bottom end of the right-side support column. The upper end of the right-side drive chain passes over the right-side upper sprocket and is fixedly connected to the rectangular back plate. The lower end of the right-side drive chain passes under the right-side lower sprocket and is fixedly connected to the rectangular back plate.

[0012] Preferably, the lifting driver includes a dual-output shaft reducer. The two sets of output shafts of the lifting driver are respectively powered to the left drive shaft and the right drive shaft. A main drive motor is connected to the power output shaft of the lifting driver. The main drive motor drives the left drive shaft and the right drive shaft to rotate. The left drive shaft drives the left upper sprocket to rotate through a right-angle transmission reducer A. The right drive shaft drives the right upper sprocket to rotate through a right-angle transmission reducer B. The left upper sprocket and the right upper sprocket rotate in opposite directions. When the left upper sprocket rotates in reverse and the right upper sprocket rotates in forward direction, the rectangular back plate can be driven to lift. When the left upper sprocket rotates in forward direction and the right upper sprocket rotates in reverse direction, the rectangular back plate can be controlled to lower its height.

[0013] Preferably, the guide assembly includes a left slide rail mounted on the left support column and a right slide rail mounted on the right support column. One end of the rectangular back plate is provided with a left sliding mechanism that slides in cooperation with the left slide rail, and the other end of the rectangular back plate is provided with a right sliding mechanism that slides in cooperation with the right slide rail.

[0014] Preferably, the left sliding mechanism includes a wheel frame A installed at one end of the rectangular back plate, on which a set of traveling wheels A that moves along the length of the left slide rail is mounted, and the two ends of the left drive chain are respectively fixed to the upper and lower sides of the wheel frame A; the right sliding mechanism includes a wheel frame B installed at one end of the rectangular back plate, on which a set of traveling wheels B that moves along the length of the right slide rail is mounted, and the two ends of the right drive chain are respectively fixed to the upper and lower sides of the wheel frame B. The traveling wheels A and B cooperate with the left slide rail and the right slide rail respectively to roll, thereby achieving stable lifting and lowering of the rectangular back plate.

[0015] Preferably, the folded conveying pipe includes a horizontal pipe section, an upper pipe section, and a lower pipe section. The bottom end of the upper pipe section is provided with a second connecting elbow, the other end of which is rotatably connected to the horizontal pipe section. The top end of the lower pipe section is provided with a third connecting elbow, the other end of which is rotatably connected to the horizontal pipe section. The bottom end of the lower pipe section is provided with a fourth connecting elbow. The top end of the bypass feed pipe B is provided with a sixth connecting elbow, rotatably connected to the fourth connecting elbow. The top end of the upper pipe section is provided with a first connecting elbow. The inlet of the spiral centrifugal pump is provided with a sixth connecting elbow, rotatably connected to the first connecting elbow. The five connecting elbows allow for rotation of the second and third connecting elbows relative to the horizontal pipe section when the rectangular back plate is lifted. Simultaneously, the first connecting elbow can rotate relative to the fifth connecting elbow, and the fourth connecting elbow can rotate relative to the sixth connecting elbow. This reduces the angle between the upper and lower pipe sections to accommodate the lifting of the rectangular back plate. When the rectangular back plate is lowered, the second and third connecting elbows rotate relative to the horizontal pipe section. Simultaneously, the first connecting elbow can rotate relative to the fifth connecting elbow, and the fourth connecting elbow can rotate relative to the sixth connecting elbow. This increases the angle between the upper and lower pipe sections to accommodate changes in the height of the rectangular back plate.

[0016] Preferably, the suspended filler interception device includes an interception screen, and a screen support frame is installed on the outlet side of the interception screen. The interception screen is a mesh screen or a grid type, with a grid gap or mesh opening of less than 10mm, and its material is stainless steel.

[0017] Preferably, a first electrically controlled valve is installed on the bypass feed pipe A, and a second electrically controlled valve is installed on the bypass feed pipe B. When the rectangular back plate moves upward, the second electrically controlled valve opens and the first electrically controlled valve closes. When the rectangular back plate moves downward, the first electrically controlled valve opens and the second electrically controlled valve closes.

[0018] Preferably, the corrugated plate includes a stainless steel body, which is fixedly connected to a rectangular back plate. The stainless steel body is covered with a polyurethane plate. An upper reinforcing rib is provided on the outer side of the crest section, and the end of the upper reinforcing rib is welded to the rectangular back plate. A lower reinforcing rib is provided on the outer side of the trough section, and the end of the lower reinforcing rib is welded to the rectangular back plate. Both the upper and lower reinforcing ribs are angle steel, and the opening of the upper reinforcing rib faces the crest section, while the opening of the lower reinforcing rib faces the trough section.

[0019] Preferably, the bottom ends of the left and right support columns are both supported on the bottom of the pool and fixed to the bottom of the pool. The pool body has slots for installing the intercepting screen.

[0020] Compared with the prior art, the present invention has the following beneficial effects: The suspended filler interception fluidization method of the mud-film composite sewage treatment process of the present invention uses a filler separation device to circulate and transport the suspended filler accumulated on the interception screen to the inlet area. In this way, on the one hand, the filler will not flow out of the tank, and on the other hand, the interception screen can be kept unobstructed, maintaining an effective flow rate, reducing the probability of liquid level difference on both sides of the effluent screen, and ensuring the safe operation of the sewage treatment plant.

[0021] The suspended filler interception fluidization method for mud-film composite wastewater treatment described in this invention features a combination design of a corrugated plate and a rectangular back plate. The corrugated sections and the rectangular back plate form an upper collection zone for the suspended filler, while the troughs and the rectangular back plate form a lower collection zone. This method, combined with a spiral centrifugal pump, utilizes a spiral impeller, combining the characteristics of both centrifugal and positive displacement pumps. In particular, it has a wide flow channel, preventing slurry accumulation and clogging within the pump body, ensuring smooth flow. Furthermore, it allows the suspended filler to pass through without clogging, conveying it away from the intercepting screen and reducing the likelihood of the cleaned-off filler re-accumulating on the screen.

[0022] The mud-film composite wastewater treatment process with suspended filler fluidization method described in this invention features stable and reliable interception equipment with low maintenance workload. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 This is a schematic diagram illustrating the usage state of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the back structure of the rectangular back plate of the present invention; Figure 4 This is a schematic diagram of the front structure of the rectangular back plate of the present invention; Figure 5 This is a schematic diagram of the structure of a folded conveying pipe; Figure 6 This is a diagram showing the location of the upper reinforcing ribs.

[0025] In the diagram: 1. Rectangular back plate; 2. Corrugated plate; 2.1. Crest section; 2.2. Trough section; 2.3. Upper collection area; 2.4. Lower collection area; 2.5. Upper reinforcing rib plate; 2.6. Lower reinforcing rib plate; 3. Horizontal main horizontal pipe A; 4. Upper connecting branch pipe; 5. Lower connecting branch pipe; 6. Folded conveying pipe; 6.1. Horizontal pipe section; 6.2. Upper pipe section; 6.3. First connecting elbow; 6.4. Second connecting elbow; 6.5. Lower pipe section; 6.6. Third connecting elbow; 6.7. Fourth connecting elbow; 6.8. Fifth connecting elbow; 6.9. Sixth connecting elbow; 7. Bypass feed pipe A; 8. Bypass feed pipe B; 9. Spiral centrifugal pump; 10. Interception screen; 11. Pool body; 12. Horizontal main horizontal pipe B; 13. Lifting drive; 14. Left drive shaft; 15. Right drive shaft; 16. Support beam; 17. Right-angle transmission reducer A; 18. Right-angle transmission reducer B. 19. Left upper sprocket; 20. Right upper sprocket; 21. Left lower sprocket; 22. Right lower sprocket; 23. Left drive chain; 24. Right drive chain; 25. Left support column; 26. Right support column; 27. Left slide rail; 28. Right slide rail; 29. ​​Left sliding mechanism; 30. Right sliding mechanism; 31. Drain pipe; 32. First electrically controlled valve; 33. Second electrically controlled valve. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings. The present invention will be further illustrated by specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0027] Example 1, such as Figure 1-2 As shown, the fluidized bed method for suspended filler interception in a mud-film composite wastewater treatment process includes a filler separation device installed on the inlet side of the suspended filler interception device. The suspended filler interception device includes an interception screen 10. The filler separation device scrapes away the suspended filler accumulated on the interception screen 10 to prevent blockage and thus reduce wastewater treatment efficiency. The filler separation device includes a rectangular back plate 1. A corrugated plate 2 is provided along the length of the front of the rectangular back plate 1. The corrugated plate 2 includes multiple arc-shaped and continuous crest sections 2.1 and trough sections 2.2. The crest sections 2.1 and the rectangular back plate 1 form an upper collection area 2.3 for converging suspended filler, and the trough sections 2.2 and the rectangular back plate 1 form a lower collection area 2.4 for converging suspended filler. Horizontal main horizontal pipes A3 and B12 are respectively provided along the length of the upper and lower sides of the rectangular back plate 1. Multiple [unclear text - likely referring to multiple pipes] are connected to the horizontal main horizontal pipe A3. The upper connecting branch pipe 4 is connected to the horizontal main horizontal pipe B12, and multiple lower connecting branch pipes 5 are connected to it. The other end of each upper connecting branch pipe 4 is fixed to the back of the rectangular back plate 1 and connected to the corresponding upper collection area 2.3. The other end of each lower connecting branch pipe 5 is fixed to the back of the rectangular back plate 1 and connected to the corresponding lower collection area 2.4. The two ends of the horizontal main horizontal pipe A3 are sealed, and the middle is connected to the bypass feed pipe A7. The horizontal main horizontal pipe B12... Both ends are sealed, and the middle is connected to the bypass feed pipe B8. The bypass feed pipe A7 is connected to the bypass feed pipe B8 through a tee. The upper end of the bypass feed pipe B8 is connected to the folded conveying pipe 6. The other end of the folded conveying pipe 6 is connected to the inlet of the spiral centrifugal pump 9. The intercepting screen 10 is installed on the pool body 11. The pool body 11 is equipped with a back plate lifting drive assembly that drives the rectangular back plate 1 to lift and lower, and a guide assembly that guides the lifting of the rectangular back plate 1.

[0028] The suspended filler material accumulated on the intercepting screen 10 is circulated and transported to the inlet area through the filler separation device. This ensures that the filler material does not flow out of the tank and also ensures the smooth flow of the intercepting screen 10, maintaining an effective flow rate and reducing the probability of liquid level difference on both sides of the outlet screen, thus ensuring the safe operation of the sewage treatment plant.

[0029] Furthermore, the combined design of the corrugated plate 2 and the rectangular back plate 1 allows the crest section 2.1 and the rectangular back plate 1 to form an upper collection area 2.3 for converging suspended filler, and the trough section 2.2 and the rectangular back plate 1 to form a lower collection area 2.4 for converging suspended filler. In conjunction with the spiral centrifugal pump 9, which utilizes a spiral impeller and combines the characteristics of both centrifugal and positive displacement pumps, especially with its spacious flow channel, slurry does not accumulate or clog within the pump body, ensuring smooth flow. Additionally, it allows suspended filler to pass through without clogging, conveying the suspended filler mixed in the wastewater away from the intercepting screen 10, thereby reducing the probability of suspended filler cleaned from the intercepting screen 10 re-accumulating on it.

[0030] Example 2, as Figure 1-2 As shown, the fluidized bed method for suspended filler interception in a mud-film composite wastewater treatment process includes a filler separation device installed on the inlet side of the suspended filler interception device. The suspended filler interception device includes an interception screen 10. The filler separation device scrapes away the suspended filler accumulated on the interception screen 10 to prevent blockage and thus reduce wastewater treatment efficiency. The filler separation device includes a rectangular back plate 1. A corrugated plate 2 is provided along the length of the front of the rectangular back plate 1. The corrugated plate 2 includes multiple arc-shaped and continuous crest sections 2.1 and trough sections 2.2. The crest sections 2.1 and the rectangular back plate 1 form an upper collection area 2.3 for converging suspended filler, and the trough sections 2.2 and the rectangular back plate 1 form a lower collection area 2.4 for converging suspended filler. Horizontal main horizontal pipes A3 and B12 are respectively provided along the length of the upper and lower sides of the rectangular back plate 1. Multiple [unclear text - likely referring to multiple pipes] are connected to the horizontal main horizontal pipe A3. The upper connecting branch pipe 4 is connected to the horizontal main horizontal pipe B12, and multiple lower connecting branch pipes 5 are connected to it. The other end of each upper connecting branch pipe 4 is fixed to the back of the rectangular back plate 1 and connected to the corresponding upper collection area 2.3. The other end of each lower connecting branch pipe 5 is fixed to the back of the rectangular back plate 1 and connected to the corresponding lower collection area 2.4. The two ends of the horizontal main horizontal pipe A3 are sealed, and the middle is connected to the bypass feed pipe A7. The horizontal main horizontal pipe B12... Both ends are sealed, and the middle is connected to the bypass feed pipe B8. The bypass feed pipe A7 is connected to the bypass feed pipe B8 through a tee. The upper end of the bypass feed pipe B8 is connected to the folded conveying pipe 6. The other end of the folded conveying pipe 6 is connected to the inlet of the spiral centrifugal pump 9. The intercepting screen 10 is installed on the pool body 11. The pool body 11 is equipped with a back plate lifting drive assembly that drives the rectangular back plate 1 to lift and lower, and a guide assembly that guides the lifting of the rectangular back plate 1.

[0031] Further, the backplate lifting drive assembly drives the rectangular backplate 1 upward, and the corrugated plate 2 scrapes off the suspended filler material accumulated on the surface of the intercepting screen 10 and collects it in the lower collection area 2.4. After the spiral centrifugal pump 9 is turned on, the suspended filler material collected in the lower collection area 2.4 enters the horizontal main horizontal pipe B12 through the lower connecting branch pipe 5, and then enters the spiral centrifugal pump 9 through the bypass feeding pipe B8 and the folded conveying pipe 6. The backplate lifting drive assembly drives the rectangular backplate 1 downward, and the corrugated plate 2 scrapes off the suspended filler material accumulated on the surface of the intercepting screen 10 and collects it in the upper collection area 2.3. After the spiral centrifugal pump 9 is turned on, the suspended filler material collected in the upper collection area 2.3 enters the horizontal main horizontal pipe A3 through the upper connecting branch pipe 4, and then enters the spiral centrifugal pump 9 through the bypass feeding pipe A7 and the folded conveying pipe 6. Each outlet of the spiral centrifugal pump 9 is equipped with a drain pipe 31, which drains the suspended filler material mixed in the sewage away from the intercepting screen 10. Furthermore, the back panel lifting drive assembly includes a left support column 25 and a right support column 26 arranged parallel to each other and vertically. A support beam 16 is vertically connected to the top of the left support column 25 and the right support column 26. A left drive shaft 14 and a right drive shaft 15 are symmetrically mounted on the lifting drive 13 on the support beam 16. The other end of the left drive shaft 14 is connected to a right-angle transmission reducer A17 at the end of the support beam 16. A left upper sprocket 19 is mounted on the power output shaft of the right-angle transmission reducer A17. The other end of the right drive shaft 15 is connected to a right-angle transmission reducer B18 at the end of the support beam 16. The right-side upper sprocket 20 is mounted on the power output shaft of the right-angle transmission reducer B18. The left-side lower sprocket 21 is mounted on the bottom end of the left-side drive chain 23. The upper end of the left-side drive chain 23 passes over the left-side upper sprocket 19 and is fixedly connected to the rectangular back plate 1. The lower end of the left-side drive chain 23 passes under the left-side lower sprocket 21 and is fixedly connected to the rectangular back plate 1. The right-side lower sprocket 22 is mounted on the bottom end of the right-side support column 26. The upper end of the right-side drive chain 24 passes over the right-side upper sprocket 20 and is fixedly connected to the rectangular back plate 1. The lower end of the right-side drive chain 24 passes under the right-side lower sprocket 22 and is fixedly connected to the rectangular back plate 1.

[0032] Furthermore, the lifting driver 13 includes a dual-output shaft reducer. The two sets of output shafts of the lifting driver 13 are respectively poweredly connected to the left drive shaft 14 and the right drive shaft 15. A main drive motor is connected to the power output shaft of the lifting driver 13. The main drive motor drives the left drive shaft 14 and the right drive shaft 15 to rotate. The left drive shaft 14 drives the left upper sprocket 19 to rotate through the right-angle transmission reducer A17. The right drive shaft 15 drives the right upper sprocket 20 to rotate through the right-angle transmission reducer B18. The left upper sprocket 19 and the right upper sprocket 20 rotate in opposite directions. When the left upper sprocket 19 rotates in reverse and the right upper sprocket 20 rotates in the forward direction, the rectangular back plate 1 can be driven to lift. When the left upper sprocket 19 rotates in the forward direction and the right upper sprocket 20 rotates in reverse, the rectangular back plate 1 can be controlled to lower its height.

[0033] Furthermore, the guide assembly includes a left slide rail 27 mounted on the left support column 25 and a right slide rail 28 mounted on the right support column 26. One end of the rectangular back plate 1 is provided with a left sliding mechanism 29 that slides in cooperation with the left slide rail 27, and the other end of the rectangular back plate 1 is provided with a right sliding mechanism 30 that slides in cooperation with the right slide rail 28.

[0034] Furthermore, the left sliding mechanism 29 includes a wheel frame A installed at one end of the rectangular back plate 1, and a set of traveling wheels A that moves along the length direction of the left slide rail 27 is installed on the wheel frame A. The two ends of the left drive chain 23 are respectively fixed to the upper and lower sides of the wheel frame A. The right sliding mechanism 30 includes a wheel frame B installed at one end of the rectangular back plate 1, and a set of traveling wheels B that moves along the length direction of the right slide rail 28 is installed on the wheel frame B. The two ends of the right drive chain 24 are respectively fixed to the upper and lower sides of the wheel frame B. The set of traveling wheels A and the set of traveling wheels B cooperate with the left slide rail 27 and the right slide rail 28 to roll, thereby realizing the stable lifting and lowering of the rectangular back plate 1.

[0035] Further, the folded conveying pipe 6 includes a horizontal pipe section 6.1, an upper pipe section 6.2, and a lower pipe section 6.5. The lower end of the upper pipe section 6.2 is provided with a second connecting elbow 6.4, the other end of which is connected to and rotatably connected to the horizontal pipe section 6.1. The upper end of the lower pipe section 6.5 is provided with a third connecting elbow 6.6, the other end of which is connected to and rotatably connected to the horizontal pipe section 6.1. The lower end of the lower pipe section 6.5 is provided with a fourth connecting elbow 6.7. The upper end of the bypass feeding pipe B8 is provided with a sixth connecting elbow 6.9, which is connected to and rotatably connected to the fourth connecting elbow 6.7. The upper end of the upper pipe section 6.2 is provided with a first connecting elbow 6.3. The inlet of the spiral centrifugal pump 9 is provided with a fifth connecting elbow 6.9, which is connected to and rotatably connected to the first connecting elbow 6.3. When the rectangular back plate 1 is lifted, the second connecting elbow 6.4 and the third connecting elbow 6.6 rotate relative to the horizontal pipe section 6.1, while the first connecting elbow 6.3 can rotate relative to the fifth connecting elbow 6.8, and the fourth connecting elbow 6.7 can rotate relative to the sixth connecting elbow 6.9. This reduces the angle between the upper pipe section 6.2 and the lower pipe section 6.5 to accommodate the lifting of the rectangular back plate 1. When the rectangular back plate 1 is lowered, the second connecting elbow 6.4 and the third connecting elbow 6.6 rotate relative to the horizontal pipe section 6.1, while the first connecting elbow 6.3 can rotate relative to the fifth connecting elbow 6.8, and the fourth connecting elbow 6.7 can rotate relative to the sixth connecting elbow 6.9. This increases the angle between the upper pipe section 6.2 and the lower pipe section 6.5 to accommodate the height change of the rectangular back plate 1.

[0036] Furthermore, the suspended filler interception device includes an interception screen 10, and a screen support frame is installed on the outlet side of the interception screen 10. The interception screen 10 adopts a mesh screen or grid type, with grid gaps or mesh openings of less than 10mm, and its material is stainless steel.

[0037] Furthermore, a first electrically controlled valve 32 is installed on the bypass feed pipe A7, and a second electrically controlled valve 33 is installed on the bypass feed pipe B8. When the rectangular back plate 1 moves upward, the second electrically controlled valve 33 opens and the first electrically controlled valve 32 closes. When the rectangular back plate 1 moves downward, the first electrically controlled valve 32 opens and the second electrically controlled valve 33 closes.

[0038] Example 3, referring to Figure 6The corrugated plate 2 includes a stainless steel body, which is fixedly connected to a rectangular back plate 1. The stainless steel body is covered with a polyurethane plate. An upper reinforcing rib plate 2.5 is provided on the outer side of the crest section 2.1, and the end of the upper reinforcing rib plate 2.5 is welded to the rectangular back plate 1. A lower reinforcing rib plate 2.6 is provided on the outer side of the trough section 2.2, and the end of the lower reinforcing rib plate 2.6 is welded to the rectangular back plate 1. Both the upper reinforcing rib plate 2.5 and the lower reinforcing rib plate 2.6 are angle steels, and the opening of the upper reinforcing rib plate 2.5 faces the crest section 2.1, while the opening of the lower reinforcing rib plate 2.6 faces the trough section 2.2.

[0039] Furthermore, the bottom ends of the left support column 25 and the right support column 26 are both supported on the bottom of the pool body 11 and fixed to the bottom of the pool body 11. The pool body 11 has a slot for installing the intercepting screen 10.

[0040] The suspended filler interception fluidization method of the mud-film composite sewage treatment process of the present invention uses a filler separation device to circulate and transport the suspended filler accumulated on the interception screen to the inlet area. In this way, on the one hand, the filler will not flow out of the tank, and on the other hand, the interception screen can be kept unobstructed, maintaining an effective flow rate, reducing the probability of liquid level difference on both sides of the effluent screen, and ensuring the safe operation of the sewage treatment plant.

[0041] The suspended filler interception fluidization method for mud-film composite wastewater treatment described in this invention features a combination design of a corrugated plate and a rectangular back plate. The corrugated sections and the rectangular back plate form an upper collection zone for the suspended filler, while the troughs and the rectangular back plate form a lower collection zone. This method, combined with a spiral centrifugal pump, utilizes a spiral impeller, combining the characteristics of both centrifugal and positive displacement pumps. In particular, it has a wide flow channel, preventing slurry accumulation and clogging within the pump body, ensuring smooth flow. Furthermore, it allows the suspended filler to pass through without clogging, conveying it away from the intercepting screen and reducing the likelihood of the cleaned-off filler re-accumulating on the screen.

[0042] The mud-film composite wastewater treatment process with suspended filler fluidization method described in this invention features stable and reliable interception equipment with low maintenance workload.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0044] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A fluidized bed interception method for a mud-film composite wastewater treatment process, characterized in that: A packing separation device is installed on the inlet side of the suspended packing interception device. The suspended packing interception device includes an interception screen (10). The packing separation device scrapes off the suspended packing accumulated on the interception screen (10) to prevent the suspended packing from clogging the interception screen and thus affecting the sewage treatment efficiency. The packing separation device includes a rectangular back plate (1). A corrugated plate (2) is provided on the front of the rectangular back plate (1) along its length. The corrugated plate (2) includes multiple arc-shaped and continuous crest sections (2.1) and trough sections (2.2). The crest sections (2.1) and the rectangular back plate (1) enclose the upper confluence of the suspended packing. The collection area (2.3), the trough section (2.2) and the rectangular back plate (1) form the lower collection area (2.4) for the collection of suspended packing. The upper and lower sides of the rectangular back plate (1) are respectively provided with horizontal main horizontal pipes A (3) and B (12) along their length direction. Multiple upper connecting branch pipes (4) are connected to the horizontal main horizontal pipes A (3), and multiple lower connecting branch pipes (5) are connected to the horizontal main horizontal pipes B (12). The other end of each upper connecting branch pipe (4) is fixed to the back of the rectangular back plate (1) and connected to the corresponding upper collection area (2.3). Each lower connecting branch pipe (5) The other end is fixed to the back of the rectangular back plate (1) and connected to the corresponding lower collection area (2.4). The two ends of the horizontal main horizontal pipe A (3) are sealed and the middle is connected to the bypass feeding pipe A (7). The two ends of the horizontal main horizontal pipe B (12) are sealed and the middle is connected to the bypass feeding pipe B (8). The bypass feeding pipe A (7) is connected to the bypass feeding pipe B (8) through a tee. The upper end of the bypass feeding pipe B (8) is connected to the folded conveying pipe (6). The other end of the folded conveying pipe (6) is connected to the inlet of the spiral centrifugal pump (9). The intercepting screen (10) is installed on the pool body (11). The pool body (11) is equipped with a back plate lifting drive assembly that drives the rectangular back plate (1) to rise and fall, and a guide assembly that guides the rectangular back plate (1) to rise and fall. The back plate lifting drive assembly drives the rectangular back plate (1) to rise. The wave plate (2) scrapes off the suspended filler material accumulated on the surface of the intercepting screen (10) and collects it in the lower collection area (2.4). After the spiral centrifugal pump (9) is turned on, the suspended filler material collected in the lower collection area (2.4) enters the horizontal main horizontal pipe B (12) through the lower connecting branch pipe (5), and then enters the spiral centrifugal pump (9) through the bypass feeding pipe B (8) and the folded conveying pipe (6). The backplate lifting drive assembly drives the rectangular backplate (1) downwards. The wave plate (2) scrapes off the suspended filler material accumulated on the surface of the intercepting screen (10) and collects it in the upper collection area (2.3). After the spiral centrifugal pump (9) is turned on, the suspended filler material collected in the upper collection area (2.3) enters the horizontal main horizontal pipe A (3) through the upper connecting branch pipe (4), and then enters the spiral centrifugal pump (9) through the bypass feeding pipe A (7) and the folded conveying pipe (6). The spiral centrifugal pump (9) is equipped with a drain pipe (31) at the outlet. The drain pipe transports the suspended filler mixed in the sewage away from the intercepting screen (10). The backplate lifting drive assembly includes a left support column (25) and a right support column (26) arranged parallel to each other and vertically. The top of the left support column (25) and the right support column (26) are vertically connected to a support beam (16). The lifting drive (13) on the support beam (16) is symmetrically equipped with a left drive shaft (14) and a right drive shaft (15). The other end of the left drive shaft (14) is connected to the support. The right-angle transmission reducer A (17) at the end of the crossbeam (16) is connected to the transmission reducer A (17). The left upper sprocket (19) is installed on the power output shaft of the right-angle transmission reducer A (17). The other end of the right transmission shaft (15) is connected to the right-angle transmission reducer B (18) at the end of the supporting crossbeam (16). The right upper sprocket (20) is installed on the power output shaft of the right-angle transmission reducer B (18). The left lower sprocket (21) is installed at the bottom end of the left drive chain (23). The upper end of the left drive chain (23) starts from the left upper chain. The wheel (19) passes over the top and is fixedly connected to the rectangular back plate (1). The lower end of the left drive chain (23) passes over the bottom of the left lower sprocket (21) and is fixedly connected to the rectangular back plate (1). The bottom end of the right support column (26) is equipped with a right lower sprocket (22). The upper end of the right drive chain (24) passes over the top of the right upper sprocket (20) and is fixedly connected to the rectangular back plate (1). The lower end of the right drive chain (24) passes over the bottom of the right lower sprocket (22) and is fixedly connected to the rectangular back plate (1).

2. The suspended filler interception fluidization method for mud-film composite wastewater treatment process according to claim 1, characterized in that, The lifting driver (13) includes a dual-output shaft reducer. The two sets of output shafts of the lifting driver (13) are respectively connected to the left drive shaft (14) and the right drive shaft (15). A main drive motor is connected to the power output shaft of the lifting driver (13). The main drive motor drives the left drive shaft (14) and the right drive shaft (15) to rotate. The left drive shaft (14) drives the left upper sprocket (19) to rotate through the right-angle transmission reducer A (17). The right drive shaft (15) drives the right upper sprocket (20) to rotate through the right-angle transmission reducer B (18). The left upper sprocket (19) and the right upper sprocket (20) rotate in opposite directions. When the left upper sprocket (19) rotates in reverse and the right upper sprocket (20) rotates in forward, the rectangular back plate (1) can be driven to rise. When the left upper sprocket (19) rotates in forward and the right upper sprocket (20) rotates in reverse, the rectangular back plate (1) can be controlled to lower its height. The guide assembly includes a left slide rail (27) installed on the left support column (25) and a right slide rail (28) installed on the right support column (26). One end of the rectangular back plate (1) is provided with a left sliding mechanism (29) that slides in cooperation with the left slide rail (27), and the other end of the rectangular back plate (1) is provided with a right sliding mechanism (30) that slides in cooperation with the right slide rail (28).

3. The suspended filler interception fluidization method for mud-film composite wastewater treatment process according to claim 2, characterized in that, The left sliding mechanism (29) includes a wheel frame A installed at one end of the rectangular back plate (1). The wheel frame A is equipped with a set of walking wheels A that moves along the length direction of the left slide rail (27). The two ends of the left drive chain (23) are respectively fixed to the upper and lower sides of the wheel frame A. The right sliding mechanism (30) includes a wheel frame B installed at one end of the rectangular back plate (1). The wheel frame B is equipped with a set of walking wheels B that moves along the length direction of the right slide rail (28). The two ends of the right drive chain (24) are respectively fixed to the upper and lower sides of the wheel frame B. The walking wheels A and B cooperate with the left slide rail (27) and the right slide rail (28) to roll, thereby realizing the stable lifting and lowering of the rectangular back plate (1).

4. The suspended filler interception fluidization method for mud-film composite wastewater treatment process according to claim 3, characterized in that, The folded conveying pipe (6) includes a horizontal pipe section (6.1), an upper pipe section (6.2), and a lower pipe section (6.5). The bottom end of the upper pipe section (6.2) is provided with a second connecting elbow (6.4), and the other end of the second connecting elbow (6.4) is connected to and rotatably connected to the horizontal pipe section (6.1). The top end of the lower pipe section (6.5) is provided with a third connecting elbow (6.6), and the other end of the third connecting elbow (6.6) is connected to the horizontal pipe section (6.1). 1) Connected and rotatably connected, the bottom end of the lower pipe section (6.5) is provided with a fourth connecting elbow (6.7), the top end of the bypass feed pipe B (8) is provided with a sixth connecting elbow (6.9) that is connected and rotatably connected to the fourth connecting elbow (6.7), the top end of the upper pipe section (6.2) is provided with a first connecting elbow (6.3), and the inlet of the spiral centrifugal pump (9) is provided with a fifth connecting elbow that is connected and rotatably connected to the first connecting elbow (6.3). 6.8) When the rectangular back plate (1) is lifted, the second connecting elbow (6.4) and the third connecting elbow (6.6) rotate relative to the horizontal pipe section (6.1), while the first connecting elbow (6.3) can rotate relative to the fifth connecting elbow (6.8), and the fourth connecting elbow (6.7) can rotate relative to the sixth connecting elbow (6.9), so that the included angle between the upper pipe section (6.2) and the lower pipe section (6.5) becomes smaller to accommodate the lifting of the rectangular back plate (1). When the rectangular back plate (1) is lowered, the second connecting elbow (6.4) and the third connecting elbow (6.6) rotate relative to the horizontal pipe section (6.1), while the first connecting elbow (6.3) can rotate relative to the fifth connecting elbow (6.8) and the fourth connecting elbow (6.7) can rotate relative to the sixth connecting elbow (6.9), so that the included angle between the upper pipe section (6.2) and the lower pipe section (6.5) increases to adapt to the height change of the rectangular back plate (1).

5. The suspended filler interception fluidization method for mud-film composite wastewater treatment process according to claim 4, characterized in that, The suspended filler interception device includes an interception screen (10), and a screen support frame is installed on the outlet side of the interception screen (10). The interception screen (10) is a mesh screen or a grid type, with a grid gap or mesh opening of less than 10mm, and its material is stainless steel.

6. The suspended filler interception fluidization method for mud-film composite wastewater treatment process according to claim 5, characterized in that, A first electrically controlled valve (32) is installed on the bypass feed pipe A (7), and a second electrically controlled valve (33) is installed on the bypass feed pipe B (8). When the rectangular back plate (1) moves upward, the second electrically controlled valve (33) opens and the first electrically controlled valve (32) closes. When the rectangular back plate (1) moves downward, the first electrically controlled valve (32) opens and the second electrically controlled valve (33) closes.

7. The suspended filler interception fluidization method for mud-film composite wastewater treatment process according to claim 6, characterized in that, The wave plate (2) includes a stainless steel body, which is fixedly connected to a rectangular back plate (1). The stainless steel body is covered with a polyurethane plate. An upper reinforcing rib plate (2.5) is provided on the outside of the crest section (2.1). The end of the upper reinforcing rib plate (2.5) is welded to the rectangular back plate (1). A lower reinforcing rib plate (2.6) is provided on the outside of the trough section (2.2). The end of the lower reinforcing rib plate (2.6) is welded to the rectangular back plate (1). Both the upper reinforcing rib plate (2.5) and the lower reinforcing rib plate (2.6) are angle steels. The opening of the upper reinforcing rib plate (2.5) faces the crest section (2.1), and the opening of the lower reinforcing rib plate (2.6) faces the trough section (2.2).

8. The suspended filler interception fluidization method for mud-film composite wastewater treatment process according to claim 7, characterized in that, The bottom ends of the left support column (25) and the right support column (26) are both supported on the bottom of the pool body (11) and fixed to the bottom of the pool body (11). The pool body (11) has a slot for installing the intercepting screen (10).

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