A device for treating aquaculture wastewater by using a microbial treatment technique

Abstract

The present application relates to the field of wastewater treatment, and particularly to a breeding wastewater treatment device using a microbial treatment technology. The device comprises a rack, a wastewater treatment tank arranged on the rack, a water inlet pipe, a water outlet pipe and a discharge pipe arranged on the wastewater treatment tank, and a main shaft rotatably arranged on the wastewater treatment tank. The main shaft is coaxially composed of multiple sub-rotation shafts, and adjacent two sub-rotation shafts are connected through a shaft coupling. A biological carrier disc skeleton is detachably arranged on the sub-rotation shaft. Multiple biological carrier discs are evenly arranged on the biological carrier disc skeleton in a circumferential direction, and each biological carrier disc can be independently disassembled. In the present application, the main shaft is modularized, and a single disc piece installation structure capable of being quickly locked is designed, thereby effectively solving the problem of complicated and time-consuming local maintenance of a traditional biological rotating disc, improving the maintainability, operation convenience and operation reliability of the breeding wastewater treatment device, and being conducive to the wide application and continuous and efficient operation of the microbial treatment technology.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a device for treating aquaculture wastewater using microbial treatment technology. Background Technology

[0002] With the rapid development of large-scale aquaculture, aquaculture wastewater has become a significant source of environmental pollution. This type of wastewater typically contains high concentrations of organic matter (such as feces and uneaten feed), nitrogen and phosphorus nutrients, suspended solids, and potential pathogens. If discharged directly without effective treatment, it will cause serious damage to water bodies, soil, and the surrounding ecological environment, and may threaten public health.

[0003] Microbial treatment technology is commonly used in the treatment of aquaculture wastewater. Microorganisms decompose pollutants through their own life activities, ultimately converting the pollutants in the water into harmless or less harmful substances. Among these technologies, rotating biological discs are a commonly used biological treatment method. However, current rotating biological discs have many biological support discs mounted on a single main shaft. Replacing or repairing a particular biological support disc is extremely troublesome, requiring the removal of all other biological support discs on the same side, resulting in a massive workload. After repair or replacement, all the removed biological support discs must be reinstalled, making the operation very cumbersome. Summary of the Invention

[0004] The purpose of this invention is to address the problem in the prior art of difficulty in disassembling and assembling local biological support plates, and to propose a wastewater treatment device for aquaculture using microbial treatment technology.

[0005] The technical solution of the present invention: A wastewater treatment device for aquaculture using microbial treatment technology includes a frame and a wastewater treatment tank mounted on the frame. The wastewater treatment tank is equipped with an inlet pipe, an outlet pipe, and a drain pipe. A main shaft is rotatably mounted on the wastewater treatment tank. The main shaft is composed of multiple coaxial sub-shafts, which are connected by couplings. A biological support plate skeleton is detachably mounted on the sub-shafts. Multiple biological support plates are evenly arranged along the circumference of the biological support plate skeleton, and each biological support plate can be individually disassembled and assembled.

[0006] Preferably, a mounting base is provided on the outer wall of the wastewater treatment tank, a main shaft drive device is provided on the mounting base, a drive gear is provided on the output end of the main shaft drive device, a driven gear is provided on the main shaft, and the driven gear meshes with the drive gear.

[0007] Preferably, the biological support plate skeleton includes an arc-shaped plate with a notch, a plurality of support plates radially disposed on the arc-shaped plate and evenly distributed along the circumference, and an arc-shaped sealing plate that closes the notch of the arc-shaped plate. In the axial direction of the main shaft, the length of the arc-shaped sealing plate is less than the length of the support plates.

[0008] Preferably, the arc-shaped card plate is provided with a connecting clearance groove and a sliding groove along the axial direction, and the arc-shaped sealing plate is provided with a slide rail. The slide rail is first placed in the clearance groove and then slid into the sliding groove.

[0009] Preferably, two baffles are provided on the inner side of one of the biological support trays, and the two baffles respectively block the axial ends of the arc-shaped sealing plate.

[0010] Preferably, slots are provided on both sides of the support plate, the biological carrier plate is fan-shaped, and a card plate is provided on the biological carrier plate to fit into the slot, with the card plate and the slot having an interference fit.

[0011] Preferably, the main shaft has a hollow structure with a through-shaft. An intermediate shaft drive device is installed on the wastewater treatment tank to rotate the intermediate shaft. Multiple protrusions are equidistantly arranged on the intermediate shaft, each including multiple protrusions evenly distributed along the circumference. A guide tube is installed on the sub-shaft, comprising a radial tube and a tail tube perpendicular to the radial tube, with a circular arc transition between them. A piston rod a and a piston rod b are respectively fitted inside the radial tube and the tail tube, respectively. Hydraulic oil is contained between piston rod a and piston rod b. The end of piston rod a rests against a protrusion. A fixing plate with fixing holes is installed on the biological support plate. After the biological support plate is installed, piston rod b is inserted into the fixing holes. In the wastewater treatment state, the intermediate shaft and the main shaft rotate synchronously.

[0012] Preferably, a limiting ring a is provided on the piston rod b, a limiting ring b is provided on the guide tube, a spring is provided between the limiting ring a and the limiting ring b, and a connecting rope is provided between the piston rod a and the piston rod b.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects: 1. Modular and easy to maintain: The main shaft is connected by multiple sub-shafts through couplings. The biological support disk skeleton can be installed independently on each sub-shaft. This allows for independent maintenance or replacement of individual sub-shaft units without disassembling the entire long main shaft and all disks, greatly reducing the workload of maintenance. 2. Quick assembly and disassembly of individual discs: The biological support disc is quickly mechanically locked and released through the intermediate shaft, protrusion, guide tube, and piston rod locking mechanism. The operator only needs to control the relative rotation of the intermediate shaft, and the locking mechanism can automatically release or lock. The assembly and disassembly of individual discs does not require complicated tools or a lot of manual operation, saving time and effort. 3. Improved treatment efficiency and flexibility: It facilitates targeted treatment of damaged, inefficient, or microbial carrier discs that require replacement with different microbial strains, which helps maintain or optimize the overall wastewater treatment efficiency. The modular design also facilitates future expansion or adjustment of the number of discs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention; Figure 2 for Figure 1 Partial structural diagram; Figure 3 A schematic diagram of the structure of the biological support plate skeleton; Figure 4 This is a schematic diagram of the internal structure of the guide tube and the main shaft; Figure 5 A schematic diagram showing the connection between the biological support tray skeleton and the biological support tray; Reference numerals: 1. Frame; 2. Wastewater treatment tank; 3. Inlet pipe; 4. Outlet pipe; 5. Drain pipe; 6. Main shaft; 7. Drive gear; 8. Driven gear; 9. Main shaft drive device; 10. Sub-shaft; 11. Coupling; 12. Slot; 13. Arc-shaped clamping plate; 14. Support plate; 15. Biological support tray; 16. Slot; 17. Clamping plate; 18. Fixing plate; 19. Fixing hole; 20. Baffle; 21. Arc-shaped sealing plate; 22. Clearance groove; 23. Guide tube; 24. Intermediate shaft; 25. Intermediate shaft drive device; 26. Bearing; 27. Protrusion; 28. Piston rod a; 29. ​​Piston rod b; 30. Connecting rope; 31. Limiting ring a; 32. Limiting ring b; 33. Spring. Detailed Implementation

[0015] Example 1; as Figures 1-2 As shown, the present invention proposes a wastewater treatment device for aquaculture using microbial treatment technology, comprising a frame 1 and a wastewater treatment tank 2 mounted on the frame 1. The wastewater treatment tank 2 is provided with an inlet pipe 3, an outlet pipe 4, and a drain pipe 5. A main shaft 6 is rotatably mounted on the wastewater treatment tank 2. Specifically, the inlet pipe 3 and the outlet pipe 4 are located at higher positions on the left and right sides of the wastewater treatment tank 2, respectively, and the drain pipe 5 is located at the bottom of the wastewater treatment tank 2 and below the outlet pipe 4. The main shaft 6 is composed of multiple coaxial sub-shafts 10, and adjacent sub-shafts 10 are connected by a coupling 11. A biological support plate skeleton is detachably mounted on the sub-shafts 10, and multiple biological support plates 15 are evenly arranged along the circumferential direction on the biological support plate skeleton. Each biological support plate 15 can be individually disassembled and assembled.

[0016] Furthermore, a mounting base is provided on the outer wall of the wastewater treatment tank 2, and a main shaft drive device 9 is provided on the mounting base. A drive gear 7 is provided on the output end of the main shaft drive device 9, and a driven gear 8 is provided on the main shaft 6. The driven gear 8 meshes with the drive gear 7. In this embodiment, the rotational speed of the driven gear 8 is less than the rotational speed of the drive gear 7. In an optional embodiment, the main shaft drive device 9 includes a protective cover, and a motor and a reducer disposed inside the protective cover. The output end of the motor is connected to the input end of the reducer, and the output end of the reducer serves as the output shaft of the main shaft drive device 9. The protective cover is disposed on the mounting base and is provided with a ventilation opening and a maintenance cover.

[0017] Example 2; as Figures 3-5 As shown, the present invention proposes a wastewater treatment device for aquaculture using microbial treatment technology. Compared with Embodiment 1, this embodiment details the structure of the biological support plate skeleton. Specifically, the biological support plate skeleton includes an arc-shaped card plate 13 with a notch, a plurality of support plates 14 radially arranged on the arc-shaped card plate 13 and evenly distributed along the circumference, and an arc-shaped sealing plate 21 that closes the notch of the arc-shaped card plate 13. In the axial direction of the main shaft 6, the length of the arc-shaped sealing plate 21 is less than the length of the support plate 14.

[0018] Furthermore, the arc-shaped clamping plate 13 is provided with a connecting clearance groove 22 and a sliding groove along the axial direction, and the arc-shaped sealing plate 21 is provided with a sliding rail. The sliding rail is first placed in the clearance groove 22 and then slid into the sliding groove. In an optional embodiment, the outer periphery of the sub-rotating shaft 10 is provided with an annular clamping groove 12, and the arc-shaped sealing plate 21 and the arc-shaped clamping plate 13 are just locked in the clamping groove 12, thereby restricting axial movement.

[0019] Furthermore, to prevent the arc-shaped sealing plate 21 from slipping out, two baffles 20 are provided on the inner side of one of the biological support trays 15, which respectively block the axial ends of the arc-shaped sealing plate 21. Slots 16 are provided on both sides of the support plate 14. The biological support tray 15 is fan-shaped and is provided with a locking plate 17 that fits into the slot 16. The locking plate 17 and the slot 16 are interference-fitted. During installation, the biological support tray 15 needs to be pressed in with force, which serves as the first limiting structure of the biological support tray 15.

[0020] Example 3; as Figures 3-5As shown, this invention proposes a wastewater treatment device for aquaculture using microbial treatment technology. Compared to Embodiment 2, this embodiment details the fixing method of the biological support plate 15. Specifically, the main shaft 6 is a hollow structure, with a through-shaft 24 inside. An intermediate shaft drive device 25 is installed on the wastewater treatment tank 2 to drive the intermediate shaft to rotate. Multiple protrusions are equidistantly arranged on the intermediate shaft 24, and each protrusion includes multiple protrusions 27 evenly arranged along the circumference. A guide tube 23 is installed on the sub-shaft 10. The guide tube 23 includes a radial tube arranged radially and a tail tube perpendicular to the radial tube, with a circular arc transition between the radial tube and the tail tube. Piston rods a28 and b29 are respectively fitted inside the radial tube and the tail tube. The intermediate shaft contains hydraulic oil. The end of piston rod a28 abuts against protrusion 27. A fixing plate 18 is provided on the biological support plate 15, and a fixing hole 19 is provided on the fixing plate 18. After the biological support plate 15 is installed in place, piston rod b29 is inserted into the fixing hole 19. In the wastewater treatment state, the intermediate shaft 24 and the main shaft 6 rotate synchronously to keep protrusion 27 abutting against piston rod a28. When it is necessary to remove a biological support plate 15, after the intermediate shaft 24 and the main shaft 6 rotate relative to each other, piston rod a28 can retract inward, so piston rod b29 can retract into guide tube 23. After releasing the fixing plate 18, the biological support plate 15 can be pulled outward by force. In addition, in order to maintain the stability of the intermediate shaft 24, multiple bearings 26 are provided on the intermediate shaft 24, and the bearings 26 are in contact with the inner wall of the main shaft 6.

[0021] Furthermore, a limiting ring a31 is provided on the piston rod b29, and a limiting ring b32 is provided on the guide tube 23. A spring 33 is provided between the limiting rings a31 and b32, and a connecting rope 30 is provided between the piston rod a28 and the piston rod b29. When the biological support plate 15 is in the limiting state, the spring 33 is in the stretched state. When the protrusion 27 rotates and does not abut against the piston rod a28, the spring 33 contracts, causing the piston rod b29 to automatically retract, making it easy to remove the biological support plate 15. In this embodiment, the biological support plate 15 Both sides of the device are provided with fixing plates 18. Similarly, each sub-rotating shaft 10 is provided with two sets of guide tubes 23, which are located on both sides of the biological support plate 15. Two piston rods b29 are inserted into the fixing holes 19 on the two fixing plates 18 respectively. In addition, in this application, the biological support plate 15 is provided with three in one circumferential direction. Similarly, each sub-rotating shaft 10 needs to be provided with three guide tubes 23 evenly in the circumferential direction. The matching piston rods a28 and piston rods b29 and other related structures should also be provided at the same time.

[0022] In summary, when it is necessary to disassemble a biological support plate 15, the present invention stops the main shaft drive device 9 and the intermediate shaft drive device 25, causing the main shaft 6 and the intermediate shaft 24 to stop rotating. Through the intermediate shaft drive device 25, the intermediate shaft 24 rotates relative to the main shaft 6, allowing the intermediate shaft 24 to rotate independently by a small angle. The protrusion 27 on it no longer abuts against the end of the piston rod a28 at the corresponding position. At this time, the hydraulic oil connected between the piston rod a28 and the piston rod b29 is no longer squeezed outward by the piston rod a28. At the same time, the spring 33 installed on the guide tube 23 contracts and resets, causing the piston rod b29 to retract into the guide tube 23, thereby automatically exiting the fixing holes 19 on the fixing plates 18 on both sides of the biological support plate 15. As the piston rod b29 exits the fixing holes 19, the interference fit between the clamping plate 17 and the slot 16 between the biological support plate 15 and the support plate 14 becomes the main constraint. At this time, the biological support plate 15 can be removed simply by pulling it outward with force. If it is necessary to repair or replace the biological carrier plate skeleton, after removing the biological carrier plate 15, slide out the arc-shaped sealing plate 21, and then the entire biological carrier plate skeleton along with the other biological carrier plates 15 on it can be removed from the slot 12 of the sub-rotating shaft 10.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A wastewater treatment device for aquaculture using microbial treatment technology, comprising a frame (1) and a wastewater treatment tank (2) mounted on the frame (1), wherein an inlet pipe (3), an outlet pipe (4), and a drain pipe (5) are provided on the wastewater treatment tank (2), and a main shaft (6) is rotatably mounted on the wastewater treatment tank (2); characterized in that, The main shaft (6) is composed of multiple sub-shafts (10) coaxially. Two adjacent sub-shafts (10) are connected by a coupling (11). The biological support plate skeleton is detachably set on the sub-shaft (10). Multiple biological support plates (15) are evenly arranged on the biological support plate skeleton along the circumferential direction. Each biological support plate (15) can be disassembled and assembled individually.

2. The aquaculture wastewater treatment device using microbial treatment technology according to claim 1, characterized in that, A mounting base is provided on the outer wall of the wastewater treatment tank (2), and a main shaft drive device (9) is provided on the mounting base. A drive gear (7) is provided on the output end of the main shaft drive device (9), and a driven gear (8) is provided on the main shaft (6). The driven gear (8) meshes with the drive gear (7).

3. The aquaculture wastewater treatment device employing microbial treatment technology according to claim 1, characterized in that, The biological support plate skeleton includes an arc-shaped plate (13) with a notch, a plurality of support plates (14) radially arranged on the arc-shaped plate (13) and evenly distributed along the circumference, and an arc-shaped sealing plate (21) that closes the notch of the arc-shaped plate (13). In the axial direction of the main shaft (6), the length of the arc-shaped sealing plate (21) is less than the length of the support plate (14).

4. The aquaculture wastewater treatment device using microbial treatment technology according to claim 3, characterized in that, The arc-shaped plate (13) is provided with a connecting clearance groove (22) and a sliding groove along the axial direction. The arc-shaped sealing plate (21) is provided with a sliding rail. The sliding rail is first placed in the clearance groove (22) and then slid into the sliding groove.

5. The aquaculture wastewater treatment device employing microbial treatment technology according to claim 4, characterized in that, Two baffles (20) are provided on the inner side of one of the biological support trays (15), and the two baffles (20) block the two ends of the arc-shaped sealing plate (21) respectively.

6. The aquaculture wastewater treatment device employing microbial treatment technology according to claim 3, characterized in that, Slots (16) are provided on both sides of the support plate (14). The biological carrier plate (15) is fan-shaped. A card plate (17) is provided on the biological carrier plate (15) to fit into the slot (16). The card plate (17) and the slot (16) are interference fit.

7. The aquaculture wastewater treatment device employing microbial treatment technology according to claim 3, characterized in that, The main shaft (6) is a hollow structure, and a through intermediate shaft (24) is provided in the main shaft (6). An intermediate shaft drive device (25) is provided on the wastewater treatment tank (2) to drive the intermediate shaft to rotate. Multiple protrusions are provided at equal intervals on the intermediate shaft (24), and each protrusion includes multiple protrusions (27) evenly arranged along the circumference. A guide tube (23) is provided on the sub-rotating shaft (10). The guide tube (23) includes a radial tube arranged in the radial direction and a tail tube perpendicular to the radial tube. The two tubes are connected by an arc transition. Piston rod a (28) and piston rod b (29) are respectively installed in the radial tube and the tail tube. Hydraulic oil is contained between piston rod a (28) and piston rod b (29). The end of piston rod a (28) abuts against the protrusion (27). A fixing plate (18) is installed on the biological support plate (15). A fixing hole (19) is provided on the fixing plate (18). After the biological support plate (15) is installed in place, piston rod b (29) is inserted into the fixing hole (19). Under the wastewater treatment state, the intermediate shaft (24) and the main shaft (6) rotate synchronously.

8. The aquaculture wastewater treatment device employing microbial treatment technology according to claim 7, characterized in that, A limiting ring a (31) is provided on piston rod b (29), a limiting ring b (32) is provided on guide tube (23), a spring (33) is provided between limiting ring a (31) and limiting ring b (32), and a connecting rope (30) is provided between piston rod a (28) and piston rod b (29).

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