Municipal sewage treatment precipitation and filtration system

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a municipal sewage treatment, sedimentation and filtration system which comprises a coagulating basin, a flocculation basin arranged on one side of the coagulating basin and a sedimentation basin arranged on one side of the flocculation basin, a water inlet pipe is arranged on one side of the coagulating basin, a first baffle is longitudinally fixed on one side in the coagulating basin, and a second baffle is arranged on the other side in the coagulating basin. A surpassing channel is formed in one side of the first baffle; a mounting seat is longitudinally fixed in the center of the inside of the flocculation basin, a water guide pipe capable of being communicated with the surpassing channel is mounted at the bottom of the flocculation basin, the top end of the water guide pipe extends upwards into the mounting seat, a mixing barrel is fixed at the top of the mounting seat, and a propeller capable of rotating is arranged on the mixing barrel; a medicine feeding pipe is horizontally installed at the bottom of the mixing barrel, the top end of the medicine feeding pipe is connected with an external medicine box, and a medicine outlet for spraying medicine upwards is formed in the medicine feeding pipe. According to the sewage treatment device, rapid mixing of sewage and a flocculation agent is achieved, and the problem that the flocculation efficiency is affected due to non-uniform mixing of the flocculation agent and the sewage is solved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a municipal wastewater treatment sedimentation and filtration system. Background Technology

[0002] Wastewater treatment is a crucial link in protecting water resources and maintaining ecological balance. It aims to remove harmful substances such as suspended solids, organic matter, heavy metals, and pathogens from wastewater through physical, chemical, and biological technologies, enabling it to meet discharge standards or achieve water resource recycling. This process encompasses pretreatment, primary treatment (such as sedimentation and filtration), secondary biological treatment (using microorganisms to degrade pollutants), and advanced treatment (such as membrane separation and disinfection).

[0003] Chinese patent CN218345254U discloses a sedimentation and filtration device for wastewater treatment, including a base. A housing is fixedly connected to the top left side of the base, a motor is fixedly connected to the top of the housing, a rotating rod is fixedly connected to the output end of the motor, a stirring frame is fixedly connected to the surface of the rotating rod, a reagent box is fixedly connected to one side of the top of the housing, a water inlet pipe is provided at the top of one side of the housing, and a sealing plate is provided at the bottom of one side of the housing. This sedimentation and filtration device for wastewater treatment, through the cooperation of the base, housing, motor, rotating rod, stirring frame, reagent box, water inlet pipe, sealing plate, water pump, pumping pipe, hose, filter box, slot, clamping plate, fine filter plate, coarse filter plate, pressure plate, sealing plate, sealing gasket, and drain pipe, allows operators to easily disassemble and clean the filter components of the wastewater treatment sedimentation and filtration device, thereby improving the filtration effect to a certain extent.

[0004] The sedimentation filtration device described in the aforementioned patent documents involves adding reagents from a reagent box into the housing, and then using a motor to drive a rotating rod to mix the reagents and wastewater. However, the existing sedimentation filtration device has a large internal space, which prevents the reagents and wastewater from mixing sufficiently, thus affecting the flocculation efficiency. Therefore, a municipal wastewater treatment sedimentation filtration system is proposed. Utility Model Content

[0005] To address the aforementioned problems, a municipal wastewater treatment sedimentation and filtration system is provided. Wastewater from the bypass channel is transported to a mixing drum via a water inlet pipe. Simultaneously, flocculant is added to the mixing drum via a dosing pipe. The rotation of a propeller drives the mixing of wastewater and flocculant within the drum. As wastewater is continuously fed into the mixing drum through the water inlet pipe, the water level rises until the mixed wastewater flows from the top of the mixing drum into the flocculation tank. This achieves rapid mixing of wastewater and flocculant, solving the problem of uneven mixing of flocculant and wastewater, which affects flocculation efficiency.

[0006] To address the problems of existing technologies, this application provides a municipal wastewater treatment sedimentation and filtration system, including a coagulation tank, a flocculation tank disposed on one side of the coagulation tank, and a sedimentation tank disposed on one side of the flocculation tank. An inlet pipe is provided on one side of the coagulation tank, and a first baffle is longitudinally fixed on one side of the interior of the coagulation tank. A bypass channel is provided on one side of the first baffle. A mounting base is longitudinally fixed at the center of the interior of the flocculation tank. A water inlet pipe, capable of communicating with the bypass channel, is installed at the bottom of the flocculation tank. The top end of the water inlet pipe extends upward into the mounting base. A mixing cylinder is fixed at the top of the mounting base, and the mixing cylinder is equipped with a rotating propeller. A drug delivery pipe is horizontally installed at the bottom of the mixing cylinder, and the top end of the drug delivery pipe is connected to an external drug tank. An upward-spraying outlet is provided on the drug delivery pipe.

[0007] As one technical solution of this application, the bottom of the flocculation tank away from the coagulation tank is provided with a water outlet that can communicate with the interior of the sedimentation tank; a second baffle for blocking mud is longitudinally fixed on the side of the sedimentation tank near the flocculation tank, and the height of the second baffle is lower than the height of the sedimentation tank.

[0008] As one technical solution of this application, the top of the flocculation tank is fixed with a frame, the top of the frame is fixed with a first servo motor, the output end of the first servo motor is longitudinally mounted with a first rotating shaft that can drive the propeller to rotate, and the propeller is fixedly connected to the first rotating shaft.

[0009] As one technical solution of this application, a connecting frame is also fixed on the first rotating shaft, and a scraper that can contact the inner wall of the mixing drum is fixed at the end of the connecting frame away from the first rotating shaft.

[0010] As one technical solution of this application, a fixed frame is installed on the top of the sedimentation tank, a second servo motor is fixed on the top of the fixed frame, a second rotating shaft is installed longitudinally at the output end of the second servo motor, and a scraper is fixed at the bottom of the second rotating shaft; a sludge trough is opened at the bottom of the sedimentation tank, and a sludge discharge pipe capable of discharging sludge is installed on one side of the sludge trough.

[0011] As one technical solution of this application, a filter screen is horizontally installed at the bottom of the fixing frame; a flow channel is opened at the top of the sedimentation tank on the side away from the flocculation tank, and the bottom of the flow channel is higher than the upper surface of the filter screen; a water collection area is provided on the side of the sedimentation tank away from the flocculation tank, and a water outlet pipe is fixed at the bottom of the side of the water collection area.

[0012] The advantages of this invention compared to existing technologies are as follows: This application uses a water inlet pipe to transport sewage from the overflow channel to the mixing drum, while simultaneously adding flocculant to the mixing drum via a dosing pipe. The rotation of the propeller drives the mixing of sewage and flocculant within the mixing drum. As sewage is continuously fed into the mixing drum through the water inlet pipe, the water level inside the mixing drum continuously rises until the mixed sewage flows from the top of the mixing drum into the flocculation tank. This achieves rapid mixing of sewage and flocculant, solving the problem of uneven mixing of flocculant and sewage, which affects flocculation efficiency. Attached Figure Description

[0013] Figure 1 This is a top view of a municipal wastewater treatment sedimentation and filtration system.

[0014] Figure 2 This is a cross-sectional view of a municipal wastewater treatment sedimentation and filtration system.

[0015] Figure 3 This is a three-dimensional diagram of a flocculation tank in a municipal wastewater treatment sedimentation and filtration system;

[0016] Figure 4 This is a three-dimensional view of an installation base and mixing cylinder in a municipal wastewater treatment sedimentation and filtration system;

[0017] Figure 5 This is a schematic diagram of the internal structure of a mixing cylinder in a municipal wastewater treatment sedimentation and filtration system.

[0018] Figure 6 This is a three-dimensional diagram of a drug delivery pipe in a municipal wastewater treatment sedimentation and filtration system.

[0019] The diagram is labeled as follows: 1. Coagulation tank; 11. First baffle; 12. Overpass channel; 13. Inlet pipe; 2. Flocculation tank; 21. Water outlet; 22. Mounting base; 23. Water inlet pipe; 24. Mixing cylinder; 25. Frame; 26. Dosing pipe; 261. Dosing outlet; 27. First servo motor; 28. First rotating shaft; 281. Propeller; 282. Connecting frame; 283. Scraper; 3. Sedimentation tank; 31. Sludge discharge pipe; 32. Second baffle; 33. Fixing frame; 34. Second servo motor; 35. Second rotating shaft; 36. Sludge scraper; 37. Filter screen; 38. Flow channel; 39. Water collection area; 310. Outlet pipe. Detailed Implementation

[0020] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0021] See Figures 1-6As shown, a municipal wastewater treatment sedimentation and filtration system includes a coagulation tank 1, a flocculation tank 2 located on one side of the coagulation tank 1, and a sedimentation tank 3 located on one side of the flocculation tank 2. An inlet pipe 13 is provided on one side of the coagulation tank 1. A first baffle 11 is longitudinally fixed on one side of the interior of the coagulation tank 1, and a bypass channel 12 is provided on one side of the first baffle 11. An mounting base 22 is longitudinally fixed at the center of the interior of the flocculation tank 2. A water inlet pipe 23 that can communicate with the bypass channel 12 is installed at the bottom of the flocculation tank 2. The top end of the water inlet pipe 23 extends upward into the mounting base 22. A mixing cylinder 24 is fixed at the top of the mounting base 22. The mixing cylinder 24 is equipped with a rotating propeller 281. A drug delivery pipe 26 is horizontally installed at the bottom of the mixing cylinder 24. The top end of the drug delivery pipe 26 is connected to an external drug tank. An upward spraying outlet 261 is opened on the drug delivery pipe 26.

[0022] Wastewater from the bypass channel 12 is transported to the mixing cylinder 24 via the water inlet pipe 23. Simultaneously, flocculant is added to the mixing cylinder 24 via the dosing pipe 26. The rotation of the propeller 281 drives the mixing of wastewater and flocculant within the mixing cylinder 24. As wastewater is continuously fed into the mixing cylinder 24 via the water inlet pipe 23, the water level in the mixing cylinder 24 continuously rises until the mixed wastewater flows from the top of the mixing cylinder 24 into the flocculation tank 2. During this process, the rotation of the propeller 281 also accelerates the upward flow of the wastewater, thereby reducing the accumulation of flocculant particles within the mounting base 22. This achieves rapid mixing of wastewater and flocculant, solving the problem of uneven mixing of flocculant and wastewater, which affects flocculation efficiency.

[0023] See Figure 2 As shown, the bottom of the flocculation tank 2, away from the coagulation tank 1, is provided with a water outlet 21 that can communicate with the interior of the sedimentation tank 3; a second baffle 32 for blocking mud is longitudinally fixed on the side of the sedimentation tank 3 near the flocculation tank 2, and the height of the second baffle 32 is lower than the height of the sedimentation tank 3.

[0024] By opening an inlet 21 at the bottom of one side of the flocculation tank 2, the wastewater mixed with chemicals inside the flocculation tank 2 flows out through the inlet 21. The wastewater first contacts the second baffle 32 and rises along one side of the second baffle 32. At this time, the flocculent particles in the wastewater are blocked by the second baffle 32 and gradually accumulate. The settled wastewater passes over the top of the second baffle 32 and enters the interior of the sedimentation tank 3. This effectively separates the flocculent particles.

[0025] See Figure 3 and Figure 5 As shown, a frame 25 is fixed on the top of the flocculation tank 2, and a first servo motor 27 is fixed on the top of the frame 25. A first rotating shaft 28 capable of driving the propeller 281 to rotate is installed longitudinally at the output end of the first servo motor 27. The propeller 281 is fixedly connected to the first rotating shaft 28.

[0026] To achieve effective rotation of the propeller 281, the propeller 281 is fixed on the first rotating shaft 28. When the first rotating shaft 28 rotates, it can drive the propeller 281 to rotate synchronously.

[0027] See Figure 5 As shown, a connecting frame 282 is also fixed on the first rotating shaft 28, and a scraper 283 that can contact the inner wall of the mixing cylinder 24 is fixed at the end of the connecting frame 282 away from the first rotating shaft 28.

[0028] To ensure the cleanliness of the inner wall of the mixing cylinder 24, a connecting frame 282 is fixed to the first rotating shaft 28, and a scraper 283 is longitudinally installed at the end of the first rotating shaft 28, with the scraper 283 in contact with the inner wall of the mixing cylinder 24. When the first rotating shaft 28 rotates, it drives the scraper 283 to rotate synchronously through the connecting frame 282, allowing the scraper 283 to clean the impurities adsorbed on the inner wall of the mixing cylinder 24. This ensures the cleanliness of the inside of the mixing cylinder 24.

[0029] See Figure 1 and Figure 2 As shown, a fixed frame 33 is installed on the top of the sedimentation tank 3, a second servo motor 34 is fixed on the top of the fixed frame 33, a second rotating shaft 35 is installed longitudinally at the output end of the second servo motor 34, and a scraper 36 is fixed at the bottom end of the second rotating shaft 35; a sludge trough is opened at the bottom of the sedimentation tank 3, and a sludge discharge pipe 31 capable of discharging sludge is installed on one side of the sludge trough.

[0030] When the second servo motor 34 starts, it drives the second rotating shaft 35 to rotate. At the same time, the second rotating shaft 35 drives the scraper 36 at the bottom to rotate synchronously. As the scraper 36 rotates, it transports the sludge deposited at the bottom of the sedimentation tank 3 to the sludge trough, and then discharges the sludge through the sludge discharge pipe 31 on one side of the sludge trough. This effectively prevents sludge from accumulating inside the sedimentation tank 3.

[0031] See Figure 1 and Figure 2 As shown, a filter screen 37 is horizontally installed at the bottom of the fixed frame 33; a flow channel 38 is opened at the top of the sedimentation tank 3 on the side away from the flocculation tank 2, and the bottom of the flow channel 38 is higher than the upper surface of the filter screen 37; a water collection area 39 is provided on the side of the sedimentation tank 3 away from the flocculation tank 2, and a water outlet pipe 310 is fixed at the bottom of the side of the water collection area 39.

[0032] By horizontally installing a filter screen 37 at the bottom of the fixed frame 33, as the water level in the sedimentation tank 3 rises continuously, the water will continue to rise through the filter screen 37, allowing the filter screen 37 to filter the residual particles in the water. The filtered water will flow into the water collection area 39 through the flow channel 38, and finally the water in the water collection area 39 will be discharged through the outlet pipe 310.

[0033] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A municipal wastewater treatment sedimentation and filtration system, comprising a coagulation tank (1), a flocculation tank (2) disposed on one side of the coagulation tank (1), and a sedimentation tank (3) disposed on one side of the flocculation tank (2), characterized in that, A water inlet pipe (13) is provided on one side of the coagulation tank (1), and a first baffle (11) is fixed longitudinally on one side of the interior of the coagulation tank (1). A bypass channel (12) is provided on one side of the first baffle (11). A mounting base (22) is fixed longitudinally at the center of the interior of the flocculation tank (2). A water inlet pipe (23) that can communicate with the bypass channel (12) is installed at the bottom of the flocculation tank (2). The top end of the water inlet pipe (23) extends upward into the mounting base (22). A mixing cylinder (24) is fixed at the top of the mounting base (22). A rotating propeller (281) is provided on the mixing cylinder (24). A drug delivery pipe (26) is installed horizontally at the bottom of the mixing cylinder (24). The top end of the drug delivery pipe (26) is connected to an external medicine box. An upward spraying outlet (261) is opened on the drug delivery pipe (26).

2. The municipal wastewater treatment sedimentation and filtration system according to claim 1, characterized in that, The bottom of the flocculation tank (2) away from the coagulation tank (1) is provided with a water outlet (21) that can communicate with the interior of the sedimentation tank (3); a second baffle (32) for blocking mud is longitudinally fixed on the side of the sedimentation tank (3) close to the flocculation tank (2), and the height of the second baffle (32) is lower than the height of the sedimentation tank (3).

3. The municipal wastewater treatment sedimentation and filtration system according to claim 1, characterized in that, The top of the flocculation tank (2) is fixed with a frame (25), and a first servo motor (27) is fixed on the top of the frame (25). The output end of the first servo motor (27) is longitudinally mounted with a first rotating shaft (28) that can drive the propeller (281) to rotate. The propeller (281) is fixedly connected to the first rotating shaft (28).

4. A municipal wastewater treatment sedimentation and filtration system according to claim 3, characterized in that, A connecting frame (282) is also fixed on the first rotating shaft (28), and a scraper (283) that can contact the inner wall of the mixing cylinder (24) is fixed at the end of the connecting frame (282) away from the first rotating shaft (28).

5. A municipal wastewater treatment sedimentation and filtration system according to claim 1, characterized in that, The sedimentation tank (3) is equipped with a fixed frame (33) on the top, and a second servo motor (34) is fixed on the top of the fixed frame (33). A second rotating shaft (35) is installed longitudinally at the output end of the second servo motor (34), and a sludge scraper (36) is fixed at the bottom end of the second rotating shaft (35). A sludge trough is opened at the bottom of the sedimentation tank (3), and a sludge discharge pipe (31) that can discharge sludge is installed on one side of the sludge trough.

6. A municipal wastewater treatment sedimentation and filtration system according to claim 5, characterized in that, A filter screen (37) is horizontally installed at the bottom of the fixed frame (33); a flow channel (38) is opened at the top of the sedimentation tank (3) on the side away from the flocculation tank (2), and the bottom of the flow channel (38) is higher than the upper surface of the filter screen (37); a water collection area (39) is provided on the side of the sedimentation tank (3) away from the flocculation tank (2), and a water outlet pipe (310) is fixed at the bottom of the side of the water collection area (39).

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