Integrated sewage treatment equipment and treatment method

Abstract

The invention provides integrated sewage treatment equipment and a treatment method. The integrated sewage treatment equipment comprises a sedimentation tank, and a sludge scraping device is arranged in the sedimentation tank; the mud scraping device comprises a transmission shaft, a truss, a flow divider, a scraper and a submersible electric pump, the top end of the transmission shaft is connected with the driving piece, and the bottom end is connected with the flow divider; the flow divider is positioned right above a mud bucket at the bottom of the sedimentation tank; the truss is fixed on the transmission shaft; the bottom end of the truss is connected with the scraper; the flow divider comprises a barrel with openings in the upper end and the lower end, a top plate is arranged at the top opening of the barrel, and a bottom plate is arranged at the bottom opening of the barrel. The submersible electric pump is communicated with the flow divider; first jet orifices are uniformly and densely distributed in the cylinder body, and second jet orifices are uniformly and densely distributed in the bottom plate. The integrated sewage treatment equipment and method provided by the invention can effectively prevent sludge floating in a precipitation process, improve the sewage treatment efficiency and effectively improve the effluent quality.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and in particular relates to an integrated sewage treatment device and a treatment method. Background Art

[0002] Integrated sewage treatment equipment is widely used in the treatment of urban and rural domestic sewage. Due to the complex water composition and serious mixing of rainwater and sewage, the stability of the effluent water quality is difficult to control. The sedimentation process in the existing integrated sewage treatment equipment has the following shortcomings: 1. The sludge scraping device rotates at the bottom of the pool to scrape the sludge into the mud bucket in the middle of the pool, and the sludge will float during the scraping process; 2. The sludge scraping efficiency is low; 3. Sludge will float in the lower area of ​​the sedimentation tank; 4. When the sludge enters the mud bucket, the sludge and the water above will impact the sludge in the mud bucket, which will also cause the sludge to float, affecting the effluent water quality.

[0003] Based on the above, the present invention provides an integrated sewage treatment device and a treatment method to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an integrated sewage treatment device and a treatment method, which can effectively prevent sludge from floating in the sedimentation process and improve the effluent water quality.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] (I) The present invention provides an integrated sewage treatment equipment, including a sedimentation tank, in which a sludge scraping device is provided; the sludge scraping device includes a transmission shaft, a truss, a diverter, a scraper and a submersible electric pump; the top end of the transmission shaft is connected to a driving member, and the bottom end is connected to the diverter; the diverter is located directly above the mud bucket in the sedimentation tank; the truss is fixedly connected to the transmission shaft, and the bottom end of the truss is provided with a scraper for scraping off the bottom sludge; the diverter includes a cylinder with openings at both ends, a top plate is provided at the top end of the cylinder, a bottom plate is provided at the bottom end of the cylinder, a plurality of first injection ports are provided on the side wall of the cylinder, and a plurality of second injection ports are provided on the bottom plate; the submersible electric pump is connected to the diverter.

[0007] As a further improvement of the embodiment of the present invention, a cover plate is further provided, and the cover plate is distributed between the truss and the scraper, the upper surface of the cover plate is fixedly connected to the truss, and the lower surface of the cover plate is fixedly connected to the scraper.

[0008] As a further improvement of the embodiment of the present invention, a flusher is provided below the end of the cover plate, and the flusher is connected to the diverter through a flushing pipe; a flushing hole is provided on the flusher, and the spraying direction of the flushing hole is inclined downward and toward the transmission shaft.

[0009] As a further improvement of an embodiment of the present invention, the transmission shaft is connected to the diverter and the truss through a coupling; the coupling is a four-way pipe structure in the shape of a "cross", the upper tube of the coupling is fixedly connected to the transmission shaft, the left tube and the right tube of the coupling are respectively connected to the two hollow cross arms of the truss, and the lower tube of the coupling is connected to the diverter; a third injection port with a spray direction toward the pool wall is provided at the end of the cross arm, and a fourth injection port is provided on the cross arm.

[0010] As a further improvement of the embodiment of the present invention, a water tank is further provided on the transmission shaft, the submersible electric pump is connected to the water tank, and the water tank is connected to the diverter through the transmission shaft and the coupling in turn; a fifth injection port is provided on the side wall of the water tank.

[0011] As a further improvement of the embodiment of the present invention, the cylinder is in a truncated cone shape, and the large end is located below the small end.

[0012] As a further improvement to the embodiment of the present invention, the bottom plate of the cylinder is a downwardly convex arc structure.

[0013] As a further improvement of the embodiment of the present invention, the bottom end diameter of the cylinder is larger than the top end diameter of the mud bucket.

[0014] (II) The present invention also provides an integrated sewage treatment method, which is implemented by using the integrated sewage treatment equipment described above, and the method comprises:

[0015] Step 10, inputting sewage from the upper part of the coagulation tank, adding reagents for stirring and mixing, and then inputting the mixed fluid into the flocculation tank from the bottom of the coagulation tank; the mixed fluid undergoes flocculation reaction in the flocculation tank to form alum flowers; the mixed liquid with alum flowers enters the sedimentation tank from the flocculation tank, and after being precipitated in the inclined tube, the sludge sinks and the supernatant flows out;

[0016] Step 20, starting the driving member and the submersible electric pump, the sludge scraping device rotates, and the submersible electric pump transports the sewage to the diverter;

[0017] Step 30, part of the fluid in the diverter is ejected outward from the first injection port on the cylinder along the circumference of the cylinder, acting on the water body around the cylinder; on the one hand, the fluid acts on the surrounding water body to prevent the sludge from floating up; on the other hand, the fluid sinks under the action of gravity, thereby accelerating the sedimentation effect of the original sludge in the pool; part of the fluid in the diverter is ejected downward from the second injection port on the bottom plate, acting on the water body below; on the one hand, the fluid acts on the water body below to prevent the sludge in the mud hopper from floating up; on the other hand, it accelerates the sinking of the sludge in the mud hopper and improves the sedimentation effect.

[0018] As a further improvement of the embodiment of the present invention, the present invention further includes:

[0019] Step 40, part of the fluid in the flow divider enters the cross arm of the truss through the coupling body;

[0020] Part of the fluid in the cross arm is sprayed onto the pool wall from the third injection port at the end of the cross arm. The rotating fluid prevents the sludge from depositing on the pool wall on the one hand, and cleans the lower pool wall at the same time; moreover, the falling fluid prevents the sludge around the pool wall from floating up on the one hand, and increases the sedimentation rate of the sludge around the pool wall on the other hand, and cooperates with the scraper to scrape the sludge, thereby effectively improving the effluent water quality; part of the fluid in the cross arm is sprayed downward through the fourth injection port. As the cross arm continues to rotate, the fluid sprayed from the fourth injection port prevents the floating of the lower sludge in the entire space in different directions, and increases the sedimentation rate of the lower sludge.

[0021] Beneficial Effects

[0022] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0023] (1) The present invention provides an integrated sewage treatment device and method, in which a sludge scraping device is provided in the sedimentation tank. While scraping the sludge, sewage is input into the diverter through a submersible electric pump, and sewage is ejected outward through a first ejection port on the diverter cylinder and a second ejection port on the bottom plate, effectively preventing the sludge from floating up, accelerating the sludge sedimentation speed, shortening the sedimentation time, thereby improving the sludge sedimentation effect and improving the effluent water quality;

[0024] (2) In the present invention, the bottom diameter of the diverter cylinder is larger than the top diameter of the mud bucket, which can reduce the floating of the internal sludge caused by the upper water flow directly falling into the mud bucket;

[0025] (3) In the present invention, a flusher is provided below the end of the cover plate, which can make the sludge flow and move toward the sludge bucket, thereby improving the sludge collection efficiency;

[0026] (4) In the present invention, the cross arm of the truss is provided with a third injection port and a fourth injection port, which can clean the sludge attached to the pool wall on the one hand, and facilitate the downward movement of the sludge on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic structural diagram of an integrated sewage treatment device according to an embodiment of the present invention;

[0028] Figure 2 is a top view of a mud scraper device according to an embodiment of the present invention;

[0029] Figure 3 is a schematic structural diagram of a flow divider according to an embodiment of the present invention;

[0030] Figure 4 It is a schematic structural diagram of a coupling body according to an embodiment of the present invention.

[0031] The symbols in the accompanying drawings are:

[0032] 1. Coagulation tank; 2. Flocculation tank; 3. Sedimentation tank; 4. Inclined pipe; 5. Driving member; 6. Transmission shaft; 7. Connecting body; 8. Truss; 81. Cross arm; 9. Flusher; 91. Flushing hole; 10. Sludge pipe; 11. Mud bucket; 12. Diverter; 121. Cylinder; 122. Bottom plate; 123. Top plate; 14. Scraper; 15. Cover plate; 16. Flusher. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] like Figures 1 to 4 As shown, an embodiment of the present invention provides an integrated sewage treatment device, including a coagulation tank 1, a flocculation tank 2 and a sedimentation tank 3 connected in sequence.

[0036] In the coagulation tank 1, water enters from the top, and after the reagents are stirred and mixed, it enters the flocculation tank 2 from the bottom, undergoes flocculation reaction to form alum flocs, and then enters the sedimentation tank 3 from the middle. A mud hopper 11 is provided at the center bottom of the sedimentation tank 3, a sludge pipe 10 is provided at the bottom of the mud hopper 11, and a supernatant outlet is provided at the upper part of the tank wall. An inclined pipe 4 and a mud scraping device are provided in the sedimentation tank 3. The mud scraping device includes a transmission shaft 6, a truss 8, a diverter 12, a scraper 14 and a submersible electric pump. The top end of the transmission shaft 6 is connected to the driving member 5 located at the top center of the tank body, and the bottom end is connected to the diverter 12. The diverter 12 is located directly above the mud hopper 11 at the bottom of the sedimentation tank 3. The truss 8 is fixed on the transmission shaft 6, and the end of the truss 8 is gapped with the tank wall. The bottom end of the truss 8 is connected to the scraper 14, and the scraper 14 is gapped with the bottom of the tank. As shown Figure 3 As shown, the diverter 12 includes a cylinder 121 with openings at both ends, a top plate 123 is provided at the top opening of the cylinder 121, and a bottom plate 122 is provided at the bottom opening of the cylinder 121. A submersible electric pump is connected to the diverter 12, and the submersible electric pump is used to draw sewage from the pool into the diverter. The cylinder 121 is evenly and densely distributed with first injection ports, and the bottom plate 122 is evenly and densely distributed with second injection ports.

[0037] During operation, in the sedimentation tank, the driving member 5 drives the truss 8 to rotate through the transmission shaft 6, and the scraper 14 pushes the sludge to move to the mud bucket in the center of the tank. The submersible electric pump extracts the sewage in the tank and transports it to the diverter 12. Part of the fluid with a certain pressure is ejected outward at high speed from the first injection port on the cylinder 121 along the circumference of the cylinder, acting on the water body around the cylinder 121. On the one hand, the high-speed fluid acts on the surrounding water body to prevent the sludge from floating up; on the other hand, the high-speed fluid sinks under the action of gravity, thereby accelerating the sedimentation effect of the original sludge in the tank. Part of the fluid with a certain pressure is ejected downward at high speed from the second injection port on the bottom plate 122, acting on the water body below. On the one hand, the high-speed fluid acts on the water body below to prevent the sludge in the mud bucket from floating up; on the other hand, it accelerates the sinking of the sludge in the mud bucket 11 and improves the sedimentation effect.

[0038] The integrated sewage treatment equipment of the above embodiment is provided with a sludge scraping device in the sedimentation tank. While scraping the sludge, sewage is input into the diverter 12 through a submersible electric pump, and sewage is ejected outward through the first injection port on the cylinder of the diverter 12 and the second injection port on the bottom plate 122, which effectively prevents the sludge from floating up, accelerates the sludge sedimentation speed, shortens the sedimentation time, thereby improving the sludge sedimentation effect and improving the effluent water quality.

[0039] Preferably, Figure 3 As shown, the cylinder 121 is in a truncated cone shape, and the large end is located below the small end. The diameter of the cylinder 121 gradually increases from top to bottom. On the one hand, the sludge moving downward falls on the inclined side wall of the cylinder 121, slowly falls along the side wall of the cylinder 121 to the upper edge of the mud bucket 11, and then slides into the mud bucket 11, so as to avoid the sludge directly and quickly sinking into the mud bucket 11 and impacting the sludge in the mud bucket 11, thereby reducing the sludge floating phenomenon. On the other hand, since the diameter of the cylinder 121 gradually increases from top to bottom, the distance between the end point (i.e., the sinking point) that the fluid ejected from the first jet port can reach and the transmission shaft gradually increases from top to bottom, and the range formed by the projection of the sinking point of the fluid ejected from the top first jet port and the sinking point of the fluid ejected from the bottom first jet port on the same vertical plane on the horizontal plane is the range of action that can drive the sludge to sink. Compared with the straight cylinder 121, the projection of the sinking point of the fluid ejected from all the first injection ports on the same vertical plane on the horizontal plane is one point. The truncated cone shape of this embodiment will increase the range of action to drive the sludge to sink, and improve the ability to prevent the sludge from floating and accelerate the sludge sedimentation.

[0040] Preferably, the bottom diameter of the cylinder 121 is larger than the top diameter of the mud bucket 11. When the sludge in the sewage in the center of the pool moves downward, it first falls on the cylinder 121, and then slowly falls into the upper edge of the mud bucket 11, thereby bringing the sludge scraped and gathered at the edge of the mud bucket 11 by the rotation of the scraper 14 into the mud bucket 11, improving the efficiency of the sludge sinking into the mud bucket 11, that is, improving the scraping efficiency of the scraping device. Instead of directly impacting the sludge in the mud bucket 11, the sludge can only slowly slide down from the gap between the bottom end of the diverter 12 and the bottom of the pool into the mud bucket 11, avoiding impact on the sludge in the mud bucket 11. Moreover, even if a small amount of sludge in the mud bucket 11 floats up, the bottom of the diverter 12 and the fluid sprayed from the second injection port block the upward movement of the floating sludge, thereby improving the sludge sedimentation effect.

[0041] Preferably, the bottom plate 122 is a downwardly convex arc structure, and the center line of the second jet port thereon is tilted outward and downward, thereby increasing the jet range. The high-speed fluid jetted from the second jet port located on the outer ring of the bottom plate 122 acts on the outer ring periphery of the top of the mud bucket 11, thereby accelerating the sludge at the entrance of the mud bucket 11 to slide down into the mud bucket, thereby improving the scraping effect.

[0042] As a preferred example, Figure 2 As shown, a cover plate 15 is provided at the bottom end of the truss 8, and the cover plate 15 is located above the scraper 14. The scraper 14 is an integral structure with a logarithmic spiral or an inclined structure. The cover plate 15 is located above the scraper 14, and the cover plate 15 is adapted to the scraper 14, and the cover plate 15 and the scraper 14 form a structure with an L-shaped cross section. The upper surface of the cover plate 15 is a smooth arc surface, which is convenient for the sludge to sink. The scraper 14 adopts an integral structure. Compared with the segmented scraper with repeated running tracks in the existing central transmission scraping technology, there will be no sludge leakage, which effectively improves the scraping effect. Since the scraper 14 is provided with the cover plate 15 above and the pool bottom below, the three of them form a "[" shape. Due to the blocking effect of the upper cover plate 15 and the scraper 14, the sludge will not float up or move away from the direction of rotation. As the scraper 14 continues to rotate, the sludge will not overflow beyond the edge of the cover plate 15. The scraper 14 continuously pushes the sludge to move toward the center of the pool, thereby greatly improving the sludge scraping efficiency.

[0043] Preferably, Figure 2As shown, a flusher 9 is provided below the end of the cover plate 15, and the flusher 9 is connected to the diverter 12 through a flushing pipe 16. The flusher 9 is densely covered with flushing holes 91, and the spraying direction of the flushing holes 91 is inclined downward toward the transmission shaft 6. When the scraper 14 rotates at the bottom of the pool, the flusher 9 rotates synchronously with the scraper 14. The sewage with a certain pressure in the diverter 12 enters the flusher 9 through the flushing pipe 16, and the flusher sprays high-pressure fluid forward, shooting at the sludge in front, accelerating the sludge to move to the center of the pool. There are two flushers 9, which are symmetrically arranged below the end of the cover plate 15. The high-pressure fluid is sprayed out from the flushing holes 91 at a high speed to the sludge in front, accelerating the sludge to gather in the mud bucket 11.

[0044] As a preferred example, the transmission shaft 6 is connected to the diverter 12 and the truss 8 through a coupling 7, and the coupling 7 is a cross tube structure, such as Figure 4 As shown. The bottom end of the transmission shaft 6 is connected to the top pipe opening of the coupling 7, the bottom pipe opening of the coupling is connected to the diverter 12, and the two side pipe openings of the coupling are respectively connected to the two cross arms 81 of the truss 8. The cross arm 81 of the truss 8 is a hollow tube with one end closed, and the open end of the cross arm 81 is connected to the diverter 12 through the coupling 7. The end of the closed end of the cross arm 81 is provided with a third injection port with the injection direction facing the pool wall, and the lower half of the cross arm 81 is provided with a fourth injection port.

[0045] In the above embodiment, the high-pressure fluid enters the cross arm 81, and then is sprayed onto the pool wall at high speed from the third injection port. The rotating high-speed fluid prevents the sludge from being deposited on the pool wall, cleans the lower pool wall, and accelerates the sedimentation rate of the sludge around the pool wall, effectively improving the effluent quality. All fourth injection ports are ray-shaped, and the high-pressure fluid is uniformly sprayed in all directions below the horizontal plane where the axis of the cross arm 81 is located. At a certain position on the axial direction of the cross arm 81, the range of action of the high-pressure fluid sprayed from the fourth injection port is the vertical plane where the position is located and the range below the horizontal plane where the axis of the cross arm is located. Since the fourth injection ports are evenly distributed along the cross arm 81, the range of action of the high-pressure fluid sprayed from the fourth injection port is a series of vertical fan-shaped surfaces arranged along the axial direction of the cross arm 81 and located below the horizontal plane where the axis of the cross arm is located. On the one hand, it prevents the floating of the sludge below, and on the other hand, it accelerates the sedimentation rate of the sludge below. As the cross arm 81 rotates continuously, the high-pressure fluid ejected from the fourth jet port changes its ejection direction in space, the orientation of the fan-shaped surface changes continuously, and the fan-shaped surfaces continuously cross and interact with each other, thereby further strengthening the ability to prevent the lower sludge from floating up and increase the sedimentation rate of the lower sludge in different directions. Therefore, the ability to prevent the lower sludge from floating up and increase the sedimentation rate of the sludge is continuously strengthened within the spatial range, effectively improving the sludge scraping efficiency. At the same time, in the upper area of ​​the diverter 12, the high-pressure fluid ejected downward from the fourth jet port further strengthens the effect of the high-pressure fluid ejected from the first jet port of the lower diverter 12 in preventing the sludge from floating up and improving the sedimentation effect.

[0046] As a preferred example, a water tank is also provided on the transmission shaft 6, and the water tank is located below the inclined tube 4. The submersible electric pump is connected to the diverter 12, specifically, the submersible electric pump is connected to the water tank, and the water tank is connected to the diverter 12 in turn through the hollow transmission shaft 6 and the coupling body 7. A fifth injection port is provided around the side wall of the water tank in the height direction.

[0047] In the above embodiment, the submersible electric pump extracts sewage from the pool and transports it to the water tank. Most of the fluid in the water tank is transported to the diverter 12 through the inner cavity of the transmission shaft 6, and a small part of the fluid is ejected outward at high speed from the fifth injection port on the side wall of the water tank along the circumference of the water tank, acting on the water body around the water tank. On the one hand, the high-speed fluid acts on the surrounding water body to prevent the sludge from floating up; on the other hand, the high-speed fluid sinks under the action of gravity, thereby accelerating the sedimentation effect of the original sludge in the pool. Improving the sedimentation effect in the height direction of the sedimentation tank creates conditions for accelerating the sedimentation in the lower part of the pool and preventing the sludge from floating up.

[0048] Preferably, the diameter of the fifth jet port gradually decreases along the circumference of the water tank. As the diameter of the fifth jet port gradually decreases along the circumference of the water tank, the distance between the end point (i.e., the sinking point) that the fluid ejected by the fifth jet port can reach and the water tank gradually increases. As the water tank rotates, the circle formed by the sinking point of the fluid ejected by the fifth jet port with the smallest diameter and the circle formed by the sinking point of the fluid ejected by the fifth jet port with the largest diameter, the range between the two circles is the range of action for driving the sludge to sink. The range of action for driving the sludge to sink is expanded, and the ability to prevent the sludge from floating and accelerate the sludge sedimentation is improved. At the same time, as the distance between the radial sinking point in each direction and the side wall of the water tank gradually increases or decreases, as the water tank rotates, the sinking points in different circumferential directions continue to change periodically, thereby enhancing the sludge sedimentation effect at different times, allowing more sludge to settle quickly.

[0049] The working process of the above integrated sewage treatment equipment is as follows:

[0050] Sewage is input from the top of the coagulation tank 1, and after adding reagents and stirring, the mixed fluid is input from the bottom of the coagulation tank 1 into the flocculation tank 2. The mixed fluid undergoes flocculation reaction in the flocculation tank 2 to form alum flowers. The growing alum flower mixed liquid enters the sedimentation tank 3 from the flocculation tank, and after sedimentation in the inclined tube, the sludge sinks and the supernatant flows out from the outlet.

[0051] The driving member 5 and the submersible electric pump are started, the sludge scraping device rotates, and the submersible electric pump transports the sewage into the water tank.

[0052] A small amount of fluid in the water tank is ejected outward at high speed from the fifth jet port on the side wall of the water tank along the circumference of the water tank, acting on the water body around the water tank. On the one hand, the high-speed fluid acts on the surrounding water body to prevent the sludge from floating up; on the other hand, the high-speed fluid sinks under the action of gravity, thereby accelerating the sedimentation effect of the original sludge in the pool. High-pressure fluid is ejected at high speed from the corresponding jet port. The sedimentation effect in the height direction of the sedimentation tank is improved, creating conditions for accelerating the sedimentation in the lower part of the pool and preventing the sludge from floating up. Most of the fluid in the water tank is transported to the diverter 12 through the transmission shaft.

[0053] Part of the fluid in the diverter 12 enters the flusher 9 through the flushing pipe, and the flushing hole of the flusher 9 sprays high-pressure fluid forward to accelerate the movement of the sludge to the center of the pool. At the same time, due to the blocking effect of the upper cover plate 15 and the scraper 14, the sludge will not float up, nor will it move away from the direction of rotation. With the continuous rotation of the scraper 14, the sludge will not overflow beyond the edge of the cover plate 15. The scraper 14 continuously pushes the sludge to move to the center of the pool, and since the scraper 14 is an integral structure, there will be no sludge leakage, which effectively improves the sludge scraping efficiency.

[0054] Part of the fluid in the diverter 12 enters the cross arm 81 through the coupling body 7. Part of the fluid in the cross arm 81 is ejected from the third jet port at high speed onto the pool wall at the end of the cross arm 81. The rotating high-speed fluid prevents the sludge from being deposited on the pool wall on the one hand, and cleans the lower pool wall at the same time; furthermore, the falling high-pressure fluid prevents the sludge around the pool wall from floating up on the one hand, and increases the sedimentation rate of the sludge around the pool wall on the other hand, which cooperates with the efficient sludge scraping of the scraper to effectively improve the effluent water quality. Part of the fluid in the cross arm 81 is ejected downward through the fourth jet port. As the cross arm 81 rotates continuously, the high-pressure fluid ejected from the fourth jet port changes its ejection direction in space, the orientation of the fan-shaped surface changes continuously, and the fan-shaped surfaces continuously cross and interact with each other, thereby further strengthening the ability to prevent the lower sludge from floating up and increase the sedimentation rate of the lower sludge in different directions. Therefore, the ability to prevent the lower sludge from floating up and increase the sludge sedimentation rate is continuously strengthened within the spatial range, effectively improving the sludge scraping efficiency. At the same time, in the upper area of ​​the diverter 12, the high-pressure fluid sprayed downward from the fourth injection port further strengthens the effect of the high-pressure fluid sprayed from the first injection port of the lower diverter 12 to prevent the sludge from floating and improve the sedimentation effect.

[0055] Part of the fluid in the diverter 12 is ejected outward at high speed from the first injection port on the cylinder 121 along the circumference of the cylinder, and acts on the water body around the cylinder. On the one hand, the high-speed fluid acts on the surrounding water body to prevent the sludge from floating up; on the other hand, the high-speed fluid sinks under the action of gravity, thereby accelerating the sedimentation effect of the original sludge in the pool.

[0056] Part of the fluid in the diverter 12 is ejected downward at high speed from the second injection port on the bottom plate 122, acting on the water below. On the one hand, the high-speed fluid acts on the water below to prevent the sludge in the mud bucket from floating up; on the other hand, it accelerates the sinking of the sludge in the mud bucket and improves the sedimentation effect.

[0057] Example 2

[0058] The embodiment of the present invention provides an integrated sewage treatment method, which is implemented based on the equipment described in Example 1. The specific method is as follows:

[0059] Step 10, input sewage from the upper part of the coagulation tank 1, add reagents for stirring and mixing, and then input the mixed fluid into the flocculation tank 2 from the bottom of the coagulation tank 1. The mixed fluid undergoes flocculation reaction in the flocculation tank 2 to form alum flowers. The growing alum flower mixed liquid enters the sedimentation tank 3 from the flocculation tank 2, and after being precipitated in the inclined tube 4, the sludge sinks and the supernatant flows out from the outlet.

[0060] Step 20 , starting the driving member and the submersible electric pump, the sludge scraping device rotates, and the submersible electric pump transports the sewage to the separator 12 .

[0061] Step 30, part of the fluid in the diverter 12 is ejected outward from the first injection port on the cylinder 121 along the circumference of the cylinder, and acts on the water body around the cylinder 121. On the one hand, the fluid acts on the surrounding water body to prevent the sludge from floating up; on the other hand, the fluid sinks under the action of gravity, thereby accelerating the sedimentation effect of the original sludge in the pool. Some of the fluid in the diverter 12 is also ejected downward from the second injection port on the bottom plate 122, acting on the water body below. On the one hand, the fluid acts on the water body below to prevent the sludge in the mud bucket from floating up; on the other hand, it accelerates the sinking of the sludge in the mud bucket and improves the sedimentation effect.

[0062] Step 40, part of the fluid in the diverter 12 enters the cross arm 81 through the coupling. Part of the fluid in the cross arm 81 is sprayed onto the pool wall from the third spray port at the end of the cross arm 81. The rotating fluid prevents the sludge from being deposited on the pool wall, and cleans the lower pool wall at the same time; moreover, the falling fluid prevents the sludge around the pool wall from floating up, and increases the sedimentation rate of the sludge around the pool wall, and cooperates with the scraper 14 to scrape the sludge, effectively improving the effluent water quality. Part of the fluid in the cross arm 81 is sprayed downward through the fourth spray port. As the cross arm 81 rotates continuously, the fluid sprayed from the fourth spray port prevents the sludge from floating up in the entire space in different directions, and increases the sedimentation rate of the sludge in the lower part.

[0063] In the integrated sewage treatment method of this embodiment, a sludge scraping device is arranged in the sedimentation tank. While scraping the sludge, sewage is input into the diverter 12 through a submersible electric pump, and sewage is sprayed outward through the first injection port on the cylinder of the diverter 12 and the second injection port on the bottom plate, which effectively prevents the sludge from floating up, accelerates the sludge sedimentation speed, shortens the sedimentation time, thereby improving the sludge sedimentation effect and improving the effluent water quality.

[0064] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An integrated sewage treatment equipment, characterized in that: It comprises a sedimentation tank (3), wherein a mud scraping device is provided in the sedimentation tank (3); The mud scraping device comprises a transmission shaft (6), a truss (8), a flow divider (12), a scraper (14) and a submersible electric pump; The top end of the transmission shaft (6) is connected to the driving member (5), and the bottom end is connected to the diverter (12); the diverter (12) is located directly above the mud bucket (11) in the sedimentation tank (3); the truss (8) is fixedly connected to the transmission shaft (6), and the bottom end of the truss (8) is provided with a scraper (14) for scraping off the bottom mud; The flow divider (12) comprises a cylinder (121) with openings at both ends, a top plate (123) being arranged at the top end of the cylinder (121), a bottom plate (122) being arranged at the bottom end of the cylinder (121), a plurality of first injection ports being arranged on the side wall of the cylinder (121), and a plurality of second injection ports being arranged on the bottom plate (122); the submersible electric pump is in communication with the flow divider (12).

2. The integrated sewage treatment equipment according to claim 1, characterized in that: A cover plate (15) is also provided, and the cover plate (15) is distributed between the truss (8) and the scraper (14). The upper surface of the cover plate (15) is fixedly connected to the truss (8), and the lower surface is fixedly connected to the scraper (14).

3. The integrated sewage treatment equipment according to claim 2, characterized in that: A flusher (9) is provided below the end of the cover plate (15), and the flusher (9) is connected to the diverter (12) through a flushing pipe (16); a flushing hole (91) is provided on the flusher (9), and the spraying direction of the flushing hole (91) is inclined downward and toward the transmission shaft (6).

4. The integrated sewage treatment equipment according to claim 1, characterized in that: The transmission shaft (6) is connected to the diverter (12) and the truss (8) through a coupling body (7); The coupling body (7) is a cross-shaped four-way pipe structure, the upper pipe of the coupling body (7) is fixedly connected to the transmission shaft (6), the left pipe and the right pipe of the coupling body (7) are respectively connected to two hollow cross arms (81) of the truss (8), and the lower pipe of the coupling body (7) is connected to the diverter (12); A third injection port with a spraying direction toward the pool wall is provided at the end of the cross arm (81), and a fourth injection port is provided on the cross arm (81).

5. The integrated sewage treatment equipment according to claim 4, characterized in that: A water tank is also provided on the transmission shaft (6), the submersible electric pump is connected to the water tank, and the water tank is connected to the diverter (12) via the transmission shaft (6) and the coupling body (7) in turn; a fifth injection port is provided on the side wall of the water tank.

6. The integrated sewage treatment equipment according to claim 1, characterized in that: The cylinder (121) is in the shape of a truncated cone, with the large end being located below the small end.

7. The integrated sewage treatment equipment according to claim 1, characterized in that: The bottom plate (122) of the cylinder (121) is a downwardly convex arc structure.

8. The integrated sewage treatment equipment according to claim 1, characterized in that: The bottom diameter of the cylinder (121) is larger than the top diameter of the mud bucket (11).

9. An integrated sewage treatment method, characterized in that: Using the integrated sewage treatment equipment according to any one of claims 1 to 8, the method comprises: Step 10, inputting sewage from the upper part of the coagulation tank (1), adding a reagent for stirring and mixing, and then inputting the mixed fluid from the bottom of the coagulation tank (1) into the flocculation tank (2); the mixed fluid undergoes a flocculation reaction in the flocculation tank (2) to form alum flowers; the mixed liquid with alum flowers enters the sedimentation tank (3) from the flocculation tank (2), and after being precipitated in an inclined tube, the sludge sinks and the supernatant flows out; Step 20, starting the driving member (5) and the submersible electric pump, the sludge scraping device rotates, and the submersible electric pump transports the sewage to the diverter (12); In step 30, part of the fluid in the diverter (12) is ejected outwardly from the first ejection port on the cylinder (121) along the circumference of the cylinder, acting on the water body around the cylinder (121); and part of the fluid in the diverter (12) is ejected downwardly from the second ejection port on the bottom plate (122), acting on the water body below.

10. The integrated sewage treatment method according to claim 9, characterized in that: Also includes: Step 40, part of the fluid in the flow divider (12) enters the cross arm (81) of the truss (8) through the connecting body (7); Part of the fluid in the cross arm (81) is sprayed onto the pool wall from the third spray port at the end of the cross arm (81), and part of the fluid in the cross arm (81) is sprayed downwards through the fourth spray port.

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