Aeration biological filler filter tank for wastewater treatment

Abstract

The utility model discloses an aeration biological filler filter tank for wastewater treatment. The aeration biological filler filter tank comprises a treatment bin, a water inlet pipe, a mounting frame, a bearing plate, a biological filler area, a cleaning mechanism and an aeration pipe, a supporting frame is arranged on the outer side of the treatment bin, a water inlet pipe is installed at the bottom of the treatment bin, one end of the water inlet pipe is located in the treatment bin, a water inlet is formed in the bottom of the water inlet pipe, a water outlet is formed in the end, located in the treatment bin, of the water inlet pipe, and a water outlet is formed in one side of the top of the treatment bin; the bearing plate is slidably mounted at the top of the mounting frame, the cleaning mechanism is mounted at the top of the bearing plate, the aerator pipe is mounted in the treatment bin, and the biological filler area is located at the top of the bearing plate. According to the utility model, dirt in the water passing holes of the bearing plate is automatically cleaned, and the problems of reduced water passing efficiency, increased water flow resistance and the like caused by blockage of the water passing holes of the bearing plate are prevented; and through the cleaning mechanism, the speed of replacing the biological filler is increased.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and specifically relates to an aerated biological filter for wastewater treatment. Background Technology

[0002] Aerated biological filters, as a highly efficient biological wastewater treatment technology, are widely used because they integrate biological oxidation and filtration. However, most existing technologies suffer from a common problem: when suspended solids in the wastewater are carried upwards by the aeration airflow, they easily accumulate on the surface of the supporting structure and in its pores, leading to pore blockage. This blockage not only significantly reduces the efficiency of wastewater and air passage, affecting the contact between pollutants and the biofilm and oxygen transfer, but also ultimately restricts the overall treatment efficiency and operational stability of the biological filter. Furthermore, biological packing materials are mostly made of porous materials such as volcanic rock and ceramsite. After long-term operation, aged biofilm will adhere to the surface of the volcanic rock and ceramsite. During periodic backwashing of the filter, the impact of the large flow of air-water mixture will cause friction and wear between the packing materials, resulting in a reduction in their overall volume and ultimately damage to the packing materials. Therefore, after long-term operation, the packing materials in the aerated biological filter need to be replaced.

[0003] A search revealed the following structure for a stainless steel biological filter (CN222593593U): a stainless steel tank body, a support layer, and a water distribution pipe. The stainless steel tank body is a rectangular shell structure. The water distribution pipe and aeration pipe are respectively located below the support layer. Mud guide plates are symmetrically welded and fixed to both sides of the bottom of the stainless steel tank body. A motor is fixed to the middle of the support plate with screws, and a stirring shaft is fixed to the motor's rotating shaft as a rotating device, with the stirring shaft located inside the biological packing material. Cleaning pipes are symmetrically located on both sides below the support plate, and nozzles are located on the outer wall of the cleaning pipes, with the nozzles tilted towards both sides.

[0004] Further search revealed that, according to prior art announcement number CN222476327U, a wastewater treatment aerated biological filter that can accelerate reaction efficiency includes an aeration tank and a rotating shaft. A main aeration pipe is fixedly installed inside the aeration tank near its lower side. Multiple sets of evenly distributed branch aeration pipes are fixedly connected between the main aeration pipes. Multiple sets of evenly distributed jet nozzles are provided at the upper ends of the branch aeration pipes and the main aeration pipes. The rotating shaft is rotatably installed inside the aeration tank above the main aeration pipes via a sealed bearing. Multiple sets of dispersing blades corresponding to the jet nozzles are fixedly sleeved on the outer circumference of the rotating shaft. Each dispersing blade has evenly distributed through holes.

[0005] In the existing technologies described above, the support layer and the top of the filter cotton plate need to support the biological packing material while allowing the sewage and airflow from the aeration pipe below to permeate upwards. When the airflow carries suspended solids in the sewage upwards, the suspended solids in the sewage are prone to accumulate in the pores of the support layer, causing blockage of the pores of the support layer and the filter cotton plate. This blockage will significantly reduce the efficiency of sewage and air passage, affecting the normal operation and treatment effect of the biological filter, and will also prevent the biological filter media in the biological filter from being discharged quickly, thus reducing the replacement speed of the biological filter media. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an aerated biological filler filter for wastewater treatment. This invention improves the speed of replacing biological filler through a cleaning mechanism, and achieves automated cleaning of dirt in the water passage holes of the support plate through a lifting mechanism in cooperation with the top pin, preventing problems such as reduced water passage efficiency and increased water flow resistance caused by blockage of the water passage holes of the support plate.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An aerated biological filter for wastewater treatment includes a treatment chamber, an inlet pipe, a mounting frame, a support plate, a biological filler area, a cleaning mechanism, and an aeration pipe. The treatment chamber has a support frame on its outer side, an inlet pipe installed at the bottom of the treatment chamber with one end inside the chamber and an inlet at its bottom. The inlet pipe also has an outlet at its inner end inside the chamber. A drain outlet is located on one side of the top of the treatment chamber. The mounting frame is installed inside the treatment chamber and at the top of the inlet pipe. The support plate is slidably mounted on the top of the mounting frame. The cleaning mechanism is installed on the top of the support plate. The aeration pipe is installed inside the treatment chamber and is located at the bottom of the outlet of the inlet pipe.

[0009] The top of the mounting bracket is equipped with several sets of pins for unblocking the water passage holes of the bearing plate;

[0010] The biological packing area is located at the top of the support plate and the height of the biological packing area does not exceed the drain outlet on one side of the top of the treatment chamber;

[0011] A temporary storage chamber is provided outside the processing chamber. An annular sealing plate is provided at the connection between the temporary storage chamber and the processing chamber. The annular sealing plate is slidably connected to the sliding groove of the processing chamber. Two sets of electric push rods are provided at the top of the temporary storage chamber. The telescopic ends of the electric push rods pass through the temporary storage chamber and are fixedly connected to the annular sealing plate. The temporary storage chamber is located outside the biological packing area.

[0012] The position of the water passage hole on the bearing plate corresponds to the position of the ejector pin on the mounting bracket.

[0013] The cleaning mechanism includes a rotating frame, motor II, motor III, fixed rods, a rotating shaft, a connecting plate, and a rotating cleaning plate. The rotating frame is rotatably installed in the processing chamber mounting slot. A sealing ring is provided at the connection between the rotating frame and the mounting slot. The rotating frame is rotatably connected to the mounting cylinder. A gear ring is provided on the outer side of the rotating frame. Motor II is installed on the outer side of the processing chamber. A gear is provided on the output shaft of motor II. The gear meshes with the gear ring. Limiting ring I and limiting ring II are provided at the bottom of the rotating frame. Limiting ring I and limiting ring II support and limit the rotation frame. There are two sets of fixed rods. The fixed rods are fixedly connected to the rotating frame. The bottom of the two sets of fixed rods are fixedly connected through a connecting plate. The rotating shaft is located between the two sets of fixed rods and is rotatably connected to the rotating frame and the connecting plate. Motor III is installed at the top of the rotating shaft. The output shaft of motor III is fixedly connected to the rotating shaft. A protective shell is provided on the outer side of motor III. The bottom end of the rotating shaft passes through the connecting plate and is fixedly connected to the rotating cleaning plate.

[0014] Motor III is a reversible motor.

[0015] The top of the support plate is equipped with a lifting mechanism; the lifting mechanism includes a sliding cylinder, a mounting cylinder, a motor I, a connecting rod, and a sliding rod I; the mounting cylinder is installed at the top of the processing chamber, and a sliding cylinder is slidably installed at the bottom of the mounting cylinder. The bottom of the sliding cylinder is fixedly connected to the support plate, and the support plate fits into the inner wall of the processing chamber. The motor I is installed on the outside of the processing chamber, and the output shaft of the motor I passes through the processing chamber and is located inside the mounting cylinder. One end of the output shaft of the motor I is equipped with a rotating rod, and one side of the rotating rod is equipped with a swing rod. The swing rod is rotatably connected to the output shaft of the motor I. A limit rod is provided on the swing rod, and the rotating rod drives the swing rod to swing through the limit rod. One end of the swing rod is hinged to a connecting rod, and one end of the connecting rod is hinged to the sliding rod I. A limit plate is provided inside the mounting cylinder, and a spring is provided between the limit plate and the bottom of the mounting cylinder. The sliding rod I passes through the limit plate and the bottom of the mounting cylinder and is fixedly connected to the sliding cylinder. The spring is sleeved on the sliding rod I.

[0016] The advantages of this utility model compared with the prior art are as follows:

[0017] 1) Motor II drives the rotating frame to rotate in the installation slot of the treatment chamber, causing the rotating cleaning plate to revolve around the top of the support plate. Motor III drives the rotating shaft to rotate, causing the rotating cleaning plate to rotate on its own axis, sweeping the residual biological filler on the support plate into the temporary storage chamber. This quickly discharges the waste biological filler on the top of the support plate into the temporary storage chamber, improving the replacement speed of the biological filler and ensuring the stability of the wastewater treatment in the aerated biological filter.

[0018] 2) Motor I drives the rotating rod to rotate. The rotating rod pushes the swing rod to swing around the output shaft of motor I through the limit rod. The connecting rod at one end of the swing rod pulls the sliding rod I, causing the sliding rod I to slide up and down inside the mounting cylinder. This allows the sliding cylinder and the support plate to rise and fall synchronously. When the support plate falls, the pin of the mounting frame inserts into the filter hole of the support plate to clear the blockage. This achieves automatic lifting and lowering of the support plate. With the pin of the mounting frame, the water holes are precisely cleared, effectively removing blockages and maintaining stable water flow efficiency. This avoids problems such as decreased water flow efficiency and increased water flow resistance caused by blockage of the water holes of the support plate. Attached Figure Description

[0019] Appendix Figure 1 This is a schematic diagram of an aerated biological filter for wastewater treatment according to this utility model.

[0020] Appendix Figure 2 It is attached Figure 1 Schematic diagram of the temporary storage warehouse structure;

[0021] Appendix Figure 3 This utility model provides a schematic diagram of the wastewater flow path in an aerated biological filter bed for wastewater treatment.

[0022] Appendix Figure 4 It is attached Figure 1 Schematic diagram of the lifting mechanism;

[0023] Appendix Figure 5 It is attached Figure 1 Schematic diagram of the cleaning organization structure Figure 1 ;

[0024] Appendix Figure 6 It is attached Figure 1 Schematic diagram of the cleaning organization structure Figure 2 ;

[0025] Appendix Figure 7 This is a schematic diagram of the appearance of an aerated biological filter for wastewater treatment according to this utility model;

[0026] In the diagram: 1. Treatment chamber; 101. Inlet; 102. Outlet; 103. Sewage outlet; 104. Support frame; 105. Inlet pipe; 106. Mounting frame; 1061. Pin; 107. Mounting groove; 108. Temporary storage chamber; 1081. Annular sealing plate; 1082. Electric push rod; 109. Biological packing area; 110. Sliding trough; 111. Support plate; 2. Lifting mechanism; 21. Sliding cylinder; 2 2. Mounting cylinder; 23. Motor I; 24. Rotating rod; 25. Swinging rod; 26. Limiting rod; 27. Connecting rod; 28. Limiting plate; 29. ​​Spring; 210. Sliding rod I; 3. Cleaning mechanism; 31. Rotating frame; 32. Motor II; 33. Limiting ring I; 34. Limiting ring II; 35. Motor III; 36. Fixing rod; 37. Rotating shaft; 38. Connecting plate; 39. Rotating cleaning plate; 4. Aeration pipe. Detailed Implementation

[0027] To facilitate understanding by those skilled in the art, the following is a detailed explanation in conjunction with the appendix. Figure 1-7 The technical solution of this utility model will be further described in detail below.

[0028] An aerated biological filter for wastewater treatment includes a treatment chamber 1, an inlet pipe 105, an installation frame 106, a support plate 111, a biological filler zone 109, a cleaning mechanism 3, and an aeration pipe 4. The treatment chamber 1 has a support frame 104 on its outer side, an inlet pipe 105 installed at the bottom of the treatment chamber 1 with one end inside the treatment chamber 1, an inlet 101 at the bottom of the inlet pipe 105, and an outlet at the end of the inlet pipe 105 inside the treatment chamber 1. A drain outlet 102 is located on one side of the top of the treatment chamber 1. The installation frame 106 is installed inside the treatment chamber 1 and located at the top of the inlet pipe 105. The support plate 111 is slidably installed on the top of the installation frame 106. The cleaning mechanism 3 is installed on the top of the support plate 111. The aeration pipe 4 is installed inside the treatment chamber 1 and located at the bottom of the outlet of the inlet pipe 105.

[0029] The top of the mounting bracket 106 is provided with several sets of pins 1061 for unblocking the water passage holes of the bearing plate 111.

[0030] The biological packing area 109 is located on top of the support plate 111 and the height of the biological packing area 109 does not exceed the drain outlet 102 on one side of the top of the treatment chamber 1;

[0031] A temporary storage chamber 108 is provided on the outside of the processing chamber 1. An annular sealing plate 1081 is provided at the connection between the temporary storage chamber 108 and the processing chamber 1. The annular sealing plate 1081 is slidably connected to the sliding groove 110 of the processing chamber 1. Two sets of electric push rods 1082 are provided on the top of the temporary storage chamber 108. The telescopic ends of the electric push rods 1082 pass through the temporary storage chamber 108 and are fixedly connected to the annular sealing plate 1081. The temporary storage chamber 108 is located outside the biological packing area 109.

[0032] The position of the water passage hole on the bearing plate 111 corresponds to the position of the ejector pin 1061 on the mounting bracket 106;

[0033] As described above, wastewater enters the inlet pipe 105 through the inlet 101 and is discharged into the treatment chamber 1 through the outlet. The aeration pipe 4 fills the water with air. The wastewater enters the biological packing area 109 through the water passage on the support plate 111. The microbial community attached to the biological packing such as volcanic rock and ceramsite degrades the organic pollutants in the wastewater. Finally, the supernatant that meets the treatment standards is discharged from the drain outlet 102 on one side of the top of the treatment chamber 1.

[0034] When it is necessary to replace the biological filler such as volcanic rock and ceramsite, two sets of electric push rods 1082 simultaneously pull the annular sealing plate 1081 into the sliding groove 110, and the biological filler such as volcanic rock and ceramsite falls into the temporary storage chamber 108. When there is residual biological filler on the top of the support plate 111, the cleaning mechanism 3 is activated to sweep the residual biological filler on the support plate 111 into the temporary storage chamber 108. The biological filter material in the temporary storage chamber 108 is discharged through the drain port 103. Subsequently, the two sets of electric push rods 1082 simultaneously push the annular sealing plate 1081 to seal the connection between the temporary storage chamber 108 and the treatment chamber 1, and the new biological filler enters the treatment chamber 1 from the top.

[0035] The cleaning mechanism 3 includes a rotating frame 31, a motor II 32, a motor III 35, a fixed rod 36, a rotating shaft 37, a connecting plate 38, and a rotating cleaning plate 39. The rotating frame 31 is rotatably installed in the mounting groove 107 of the processing chamber 1. A sealing ring is provided at the connection between the rotating frame 31 and the mounting groove 107. The rotating frame 31 is rotatably connected to the mounting cylinder 22. A gear ring is provided on the outer side of the rotating frame 31. The motor II 32 is installed on the outer side of the processing chamber 1. A gear is provided on the output shaft of the motor II 32. The gear meshes with the gear ring. A limiting ring I 33 and a limiting ring II 34 are provided at the bottom of the rotating frame 31. I33 and II34 support and limit the rotation frame 31. There are two sets of fixed rods 36, which are fixedly connected to the rotation frame 31. The bottom of the two sets of fixed rods 36 are fixedly connected through the connecting plate 38. The rotation shaft 37 is located between the two sets of fixed rods 36 and is rotatably connected to the rotation frame 31 and the connecting plate 38. The motor III35 is installed at the top of the rotation shaft 37. The output shaft of the motor III35 is fixedly connected to the rotation shaft 37. The motor III35 is provided with a protective shell on the outside. The bottom end of the rotation shaft 37 passes through the connecting plate 38 and is fixedly connected to the rotating cleaning plate 39.

[0036] The motor Ⅲ35 is a forward and reverse reversible motor;

[0037] As described above, when biological packing material remains on the top of the support plate 111, motor II 32 drives the rotating frame 31 to rotate within the mounting slot 107 of the treatment chamber 1, causing the rotating cleaning plate 39 to revolve around the top of the support plate 111. At the same time, motor III 35 drives the rotating shaft 37 to rotate, causing the rotating cleaning plate 39 to rotate on its own axis, sweeping the remaining biological packing material on the support plate 111 into the temporary storage chamber 108.

[0038] The top of the support plate 111 is provided with a lifting mechanism 2; the lifting mechanism 2 includes a sliding cylinder 21, a mounting cylinder 22, a motor I 23, a connecting rod 27, and a sliding rod I 210; the mounting cylinder 22 is installed at the top inside the processing chamber 1, and the sliding cylinder 21 is slidably installed at the bottom of the mounting cylinder 22. The bottom of the sliding cylinder 21 is fixedly connected to the support plate 111, and the support plate 111 fits into the inner wall of the processing chamber 1. The motor I 23 is installed on the outside of the processing chamber 1, and the output shaft of the motor I 23 passes through the processing chamber 1 and is located inside the mounting cylinder 22. One end of the output shaft of the motor I 23 is provided with a rotating rod 24. 4. A swing rod 25 is provided on one side. The swing rod 25 is rotatably connected to the output shaft of motor I 23. A limit rod 26 is provided on the swing rod 25. The rotating rod 24 drives the swing rod 25 to swing through the limit rod 26. A connecting rod 27 is hinged to one end of the swing rod 25. A sliding rod I 210 is hinged to one end of the connecting rod 27. A limit plate 28 is provided inside the mounting cylinder 22. A spring 29 is provided between the limit plate 28 and the bottom of the mounting cylinder 22. The sliding rod I 210 passes through the limit plate 28 and the bottom of the mounting cylinder 22 and is fixedly connected to the sliding cylinder 21. The spring 29 is sleeved on the sliding rod I 210.

[0039] As described above, when all the biological packing material on the support plate 111 enters the temporary storage chamber 108, the motor I 23 drives the rotating rod 24 to rotate. The rotating rod 24 pushes the swing rod 25 to swing around the output shaft of the motor I 23 through the limit rod 26. The connecting rod 27 at one end of the swing rod 25 pulls the sliding rod I 210, causing the sliding rod I 210 to slide downward in the mounting cylinder 22. The sliding rod I 210 drives the bottom sliding cylinder 21 and the support plate 111 to descend synchronously. The pin 1061 of the mounting frame 106 is inserted into the water passage hole of the support plate 111 to clear the blockage.

[0040] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In summary, the electronic or electrical components, including but not limited to motors and electric actuators, are existing components that were custom-made or purchased. The electrical connections between these components are conventional circuit or electrical connections in the prior art and are not within the scope of protection of this utility model.

[0042] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. An aerated biological filter for wastewater treatment, comprising a treatment chamber, an inlet pipe, a mounting frame, a support plate, a biological packing area, a cleaning mechanism, and an aeration pipe; characterized in that... The treatment chamber is equipped with a support frame on the outside, and an inlet pipe is installed at the bottom of the treatment chamber. One end of the inlet pipe is located inside the treatment chamber, and an inlet is located at the bottom of the inlet pipe. An outlet is located at the end of the inlet pipe inside the treatment chamber. A drain outlet is located on one side of the top of the treatment chamber. The mounting frame is installed inside the treatment chamber and located at the top of the inlet pipe. The support plate is slidably installed on the top of the mounting frame. The cleaning mechanism is installed on the top of the support plate. The aeration pipe is installed inside the treatment chamber and is located at the bottom of the outlet of the inlet pipe. The biological filler area is located on the top of the support plate, and the height of the biological filler area does not exceed the drain outlet on one side of the top of the treatment chamber. A temporary storage chamber is provided outside the processing chamber. An annular sealing plate is provided at the connection between the temporary storage chamber and the processing chamber. The annular sealing plate is slidably connected to the sliding groove of the processing chamber. Two sets of electric push rods are provided at the top of the temporary storage chamber. The telescopic ends of the electric push rods pass through the temporary storage chamber and are fixedly connected to the annular sealing plate. The temporary storage chamber is located outside the biological packing area. The cleaning mechanism includes a rotating frame, motor II, motor III, fixed rods, a rotating shaft, a connecting plate, and a rotating cleaning plate. The rotating frame is rotatably installed in the treatment chamber mounting slot. A sealing ring is provided at the connection between the rotating frame and the mounting slot. The rotating frame is rotatably connected to the mounting cylinder. A gear ring is provided on the outer side of the rotating frame. Motor II is installed on the outer side of the treatment chamber. A gear is provided on the output shaft of motor II. The gear meshes with the gear ring. Limiting ring I and limiting ring II are provided at the bottom of the rotating frame. There are two sets of fixed rods. The fixed rods are fixedly connected to the rotating frame. The bottom of the two sets of fixed rods are fixedly connected through a connecting plate. The rotating shaft is located between the two sets of fixed rods and is rotatably connected to the rotating frame and the connecting plate. Motor III is installed at the top of the rotating shaft. The output shaft of motor III is fixedly connected to the rotating shaft. A protective shell is provided on the outer side of motor III. The bottom end of the rotating shaft passes through the connecting plate and is fixedly connected to the rotating cleaning plate.

2. The aerated biological filter for wastewater treatment according to claim 1, characterized in that... The top of the mounting bracket has several sets of pins.

3. The aerated biological filter for wastewater treatment according to claim 1, characterized in that... The position of the water passage hole on the bearing plate corresponds to the position of the ejector pin on the mounting bracket.

4. The aerated biological filter for wastewater treatment according to claim 1, characterized in that... Motor III is a reversible motor.

5. An aerated biological filter for wastewater treatment according to claim 1, characterized in that... A lifting mechanism is provided at the top of the support plate; the lifting mechanism includes a sliding cylinder, a mounting cylinder, a motor I, a connecting rod, and a sliding rod I; the mounting cylinder is installed at the top of the processing chamber, and a sliding cylinder is slidably installed at the bottom of the mounting cylinder. The bottom of the sliding cylinder is fixedly connected to the support plate, and the support plate fits into the inner wall of the processing chamber. The motor I is installed on the outside of the processing chamber, and the output shaft of the motor I passes through the processing chamber and is located inside the mounting cylinder. One end of the output shaft of the motor I is provided with a rotating rod, and one side of the rotating rod is provided with a swing rod. The swing rod is rotatably connected to the output shaft of the motor I. A limit rod is provided on the swing rod, and the rotating rod drives the swing rod to swing through the limit rod. One end of the swing rod is hinged to a connecting rod, and one end of the connecting rod is hinged to the sliding rod I. A limit plate is provided inside the mounting cylinder, and a spring is provided between the limit plate and the bottom of the mounting cylinder. The sliding rod I passes through the limit plate and the bottom of the mounting cylinder and is fixedly connected to the sliding cylinder. The spring is sleeved on the sliding rod I.

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