Low-exposure HC type sewage treatment equipment applied in bardenpho system

Abstract

This utility model discloses a low-aeration HC-type wastewater treatment device applied in the Bardenho system. This utility model replaces conventional aeration pipes with multiplier aeration hoses. The special design of the multiplier aeration hoses makes aeration more uniform, producing smaller bubbles with a larger specific surface area and a slower upward flow velocity. Combined with the Bardenho process, this effectively improves nitrogen and phosphorus removal efficiency. After the pipe connectors are removed, the multiplier aeration hose can be pulled out of the support channel by lifting the branch riser for replacement and maintenance. Furthermore, by pulling the other end of the multiplier aeration hose with a traction rope, the hose can be pulled back into the support channel after maintenance, achieving maintenance without interrupting production and improving wastewater treatment efficiency. The maintenance mechanism uses a winding drum, locking plate, and locking bolts to retract and release the traction rope, facilitating stable retraction or movement of the multiplier aeration hose.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a low-aeration HC type wastewater treatment device used in a bardenpho system. Background Technology

[0002] Nitrogen and phosphorus removal are routine objectives in wastewater treatment. Traditional nitrogen and phosphorus removal processes include A 2 Oxidation ditch, A2O+MBR, and multi-stage AO processes, among others, are improvements on traditional treatment processes. Currently, the most commonly used wastewater treatment process is the Bardenho process, which mainly involves two anoxic stages. The first part is a conventional A2O process. 2 The O process utilizes the synergistic effect of the anaerobic (denitrification) and anoxic (denitrification) stages to achieve denitrification and phosphorus removal by using polyphosphate-accumulating bacteria and nitrifying bacteria in activated sludge. Its second part is the co-current denitrification with an external carbon source, which uses the nitrate produced in the aerobic stage as an electron acceptor and completes the denitrification with an external carbon source, thereby improving the denitrification efficiency.

[0003] However, under the current Bardenho process conditions, its aeration system is prone to clogging, and long-term use will require frequent shutdowns for maintenance, reducing wastewater treatment efficiency. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a low-aeration HC type wastewater treatment device for use in bardenpho systems.

[0005] This utility model provides a low-aeration HC-type wastewater treatment device for use in a bardenpho system, comprising:

[0006] A low-aeration HC-type wastewater treatment device used in a bardenpho system, characterized in that it comprises:

[0007] The treatment tank has an inlet end and an outlet end along a first direction. Several partition walls are arranged inside along the first direction, and each partition wall divides the treatment tank into five water treatment areas. The height of each partition wall gradually decreases along the direction from the inlet end to the outlet end, and the five water treatment areas are, in order, an anaerobic zone, a first anoxic zone, a first aerobic zone, a second anoxic zone, and a second aerobic zone.

[0008] Several multiplier aeration hoses are respectively disposed at the bottom of the first anoxic zone, the first aerobic zone, the second anoxic zone and the second aerobic zone, and the extension direction of each multiplier aeration hose is the first direction;

[0009] Several support mechanisms are respectively located at the bottom of the first anoxic zone, the first aerobic zone, the second anoxic zone, and the second aerobic zone, and have several support channels through which the multiplier aeration hose passes.

[0010] The maintenance mechanism includes a traction rope located at the head end of the multiplier aeration hose, and the other end of the traction rope is connected to the top of the treatment tank.

[0011] The air supply mechanism includes branch risers connected to the tail end of the multiplying aeration hose. Each branch riser is detachably connected to the main pipeline via a pipe connector. An aeration fan is provided at one end of the main pipeline.

[0012] According to the technical solution provided in the embodiments of this application, the maintenance mechanism further includes a fixing member disposed at the top of the treatment pool, the top of the fixing member is provided with a first fixed shaft, a winding drum is rotatably connected to the middle of the first fixed shaft, and the traction rope is wound on the winding drum.

[0013] The first fixed shaft has a locking plate at the end away from the fixing member, and the locking plate is connected by a number of locking bolts through threads.

[0014] According to the technical solution provided in the embodiments of this application, the number of support mechanisms in a water treatment area is at least two, and they are evenly arranged and installed at the bottom of the treatment tank along a first direction. The support mechanism includes a plurality of side limiting members evenly arranged at the bottom of the treatment tank along a second direction. Each side limiting member is provided with a second connecting member at its top and bottom. Adjacent second connecting members are provided with upper and lower limiting members. Adjacent side limiting members are connected by two upper and lower limiting members to form the support channel.

[0015] According to the technical solution provided in the embodiments of this application, a sleeve is provided through the middle of the side limiting member and the two corresponding second connecting members, and a pre-embedded stud is provided at the bottom of the treatment pool. The pre-embedded stud passes through the sleeve, and a support nut and a locking nut are respectively threaded to the bottom and top of the sleeve corresponding to the pre-embedded stud.

[0016] According to the technical solution provided in the embodiments of this application, the side limiting member is a concave guide wheel, which can rotate around the sleeve; the second connecting member is a connecting cylinder; and the upper and lower limiting members are rotatable cylinders.

[0017] According to the technical solution provided in the embodiments of this application, detection devices are provided inside the first aerobic zone, the second anoxic zone, and the second aerobic zone, and each of the detection devices is electrically connected to the processing device.

[0018] According to the technical solution provided in the embodiments of this application, the top of each branch riser is detachably connected to the pipe connector via an electric regulating valve, and both the electric regulating valve and the aeration blower are electrically connected to the treatment equipment.

[0019] According to the technical solution provided in the embodiments of this application, an inlet pump is connected to one side of the anaerobic zone, and a return pump is connected to the end of the first aerobic zone away from the anaerobic zone. The outlet of the return pump is connected to the end of the first anoxic zone near the anaerobic zone.

[0020] According to the technical solution provided in the embodiments of this application, the treatment pool is further provided with a plurality of guiding components. The guiding components include two mounting plates, two second fixed shafts are provided between the two mounting plates, a branch riser is provided between the two second fixed shafts, and a guide wheel that fits with the outer surface of the branch riser is provided between each of the second fixed shafts.

[0021] According to the technical solution provided in the embodiments of this application, the end face edge of the winding spool away from the fixing member is provided with a crank handle.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] This invention replaces conventional aeration pipes with multiplier aeration hoses. The special design of the multiplier aeration hoses makes aeration more uniform, produces smaller bubbles with a larger specific surface area, slower upward flow velocity, and greatly extends the residence time of bubbles in water. The oxygen transfer efficiency is 40% to 50%, the power efficiency can reach 10 kg O2 / kW·h, and the system has a high activated sludge concentration, which can reach 5 to 8 g / L. Combined with the Bardenho process, it effectively improves the nitrogen and phosphorus removal efficiency.

[0024] Furthermore, after removing the pipe connectors, the multiplier aeration hose can be pulled out from the support channel by lifting the branch riser upwards for replacement and maintenance. The other end of the multiplier aeration hose can be pulled by the traction rope, and after maintenance, the multiplier aeration hose can be pulled back into the support channel, achieving maintenance without stopping production and improving sewage treatment efficiency. Furthermore, the maintenance mechanism consists of a winding drum, locking plate, and locking bolts to retract and release the traction rope, facilitating the stable retraction of the multiplier aeration hose or its movement.

[0025] Furthermore, this utility model also includes a support mechanism. Each side limiting member is connected one by one through the second connecting member at the top and bottom of the side limiting member, thereby forming multiple support channels. This facilitates the parallel arrangement of the multiplying aeration hoses, improving aeration efficiency. The side limiting members and the second connecting member are designed to be rotatable, improving the stability of pulling out and pulling back the multiplying aeration hoses during maintenance and reducing the risk of damage to the multiplying aeration hoses due to collisions. In addition, a support lock nut, a locking nut, and a pre-embedded stud are provided to ensure the detachable connection of the side limiting members and improve the installation stability of the side limiting members.

[0026] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0027] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 A schematic diagram of the structure of a low-aeration HC-type wastewater treatment device applied in a bardenpho system is provided for an embodiment of this application;

[0029] Figure 2 A schematic diagram of the support mechanism in a low-aeration HC-type wastewater treatment device applied in a bardenpho system, provided as an embodiment of this application;

[0030] Figure 3 A schematic diagram of the maintenance mechanism in a low-aeration HC-type wastewater treatment device applied in a bardenpho system, provided as an embodiment of this application;

[0031] Figure 4 A schematic diagram of a first installation method of a guide component in a low-aeration HC-type wastewater treatment device applied in a bardenpho system, provided as an embodiment of this application;

[0032] Figure 5 This is a schematic diagram illustrating a second installation method of the guiding component in a low-aeration HC-type wastewater treatment device applied in a bardenpho system, as provided in an embodiment of this application.

[0033] Numbering on the map:

[0034] 1. Treatment tank; 11. Partition wall; 12. Anaerobic zone; 13. First anoxic zone; 14. First aerobic zone; 15. Second anoxic zone; 16. Second aerobic zone; 17. Drain valve;

[0035] 2. Multiplier aeration hose;

[0036] 3. Air supply mechanism; 31. Branch riser; 32. Regulating valve; 33. Main pipeline; 34. Pipeline connectors; 35. Aeration blower;

[0037] 4. Maintenance mechanism; 41. Fixing component; 42. Traction rope; 43. First fixed shaft; 44. Winding drum; 45. Locking plate; 46. Locking bolt; 47. Handle;

[0038] 5. Support mechanism; 51. Side limiting component; 52. Second connecting component; 53. Upper and lower limiting components; 54. Embedded stud; 55. Support nut; 56. Locking nut; 57. Sleeve;

[0039] 6. Testing equipment; 7. Processing equipment; 8. Return pump; 9. Inlet pump;

[0040] 10. Guide assembly; 101. Mounting plate; 102. Second fixed axis; 103. Guide wheel. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0042] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] Please refer to Figures 1-5 As shown, an embodiment of this utility model provides a low-aeration HC-type wastewater treatment device applied in a bardenpho system, comprising:

[0044] Treatment tank 1 has an inlet and an outlet along a first direction. Several partition walls 11 are arranged inside along the first direction, dividing the treatment tank 1 into five water treatment zones. The height of each partition wall 11 gradually decreases from the inlet to the outlet, and the five water treatment zones are, in order, an anaerobic zone 12, a first anoxic zone 13, a first aerobic zone 14, a second anoxic zone 15, and a second aerobic zone 16. The first direction is... Figure 1 The water inlet is located at the left end of the treatment tank 1, while the water outlet is located at the right end of the treatment tank 1. A drain valve 17 is provided in the middle of the water outlet to discharge the wastewater from the second aerobic zone 16.

[0045] In this process, wastewater is fed into the anaerobic zone 12, where phosphorus is released using an external carbon source. Due to the excellent denitrification effect of the Bardenho process, the nitrate nitrogen content in the sludge return liquid from the secondary sedimentation tank is low. In the first anoxic zone 13, denitrification is fully carried out using the external carbon source left over from the anaerobic process, and denitrification and phosphorus removal also occur here. Then, in the second anoxic zone 15, microorganisms use endogenous organic matter or external carbon sources to carry out denitrification, thereby shortening the denitrification time and the volume of the denitrification tank. Finally, the wastewater stays in the second aerobic zone 16 for a short time to remove nitrogen from the mixed liquor, consume excess external carbon sources, and increase the DO concentration to reduce phosphorus release from the secondary sedimentation tank, ultimately achieving denitrification and phosphorus removal based on the Bardenho process.

[0046] Several multiplier aeration hoses 2 are respectively installed at the bottom of the first anoxic zone 13, the first aerobic zone 14, the second anoxic zone 15, and the second aerobic zone 16, with the extension direction of each multiplier aeration hose 2 being the first direction;

[0047] Based on the Bardenho process, this application utilizes a multiplier aeration hose 2 to achieve more uniform aeration, resulting in smaller bubbles with a larger specific surface area, slower upward flow velocity, and significantly extended bubble residence time in water. Oxygen transfer efficiency reaches 40%–50%, and power efficiency can reach 10 kgO2 / kW·h. The system exhibits a high activated sludge concentration, reaching 5–8 g / L, thus creating an environment conducive to high sludge concentration growth. This promotes activated sludge growth within treatment tank 1, enhancing its treatment efficiency. Furthermore, as the height of each partition wall 11 gradually decreases, the bubbles generated by the multiplier aeration hose 2 drive the water upwards, pushing the water at the bottom upwards and flowing to the next treatment area, effectively replacing the function of a water pump.

[0048] Several support mechanisms 5 are respectively located at the bottom of the first anoxic zone 13, the first aerobic zone 14, the second anoxic zone 15, and the second aerobic zone 16, and have several support channels through which the multiplier aeration hose 2 passes.

[0049] Maintenance mechanism 4 includes a traction rope 42 located at the head end of the multiplier aeration hose 2, and the other end of the traction rope 42 is connected to the top of the treatment tank 1.

[0050] The air supply mechanism 3 includes a branch riser 31 connected to the tail end of the multiplying aeration hose 2. Each branch riser 31 is detachably connected to the main pipeline 33 via a pipe connector 34. An aeration fan 35 is provided at one end of the main pipeline 33.

[0051] Based on the Bardenho process and the multiplier aeration hose 2, the multiplier aeration hose 2 is installed through the support channel of the support mechanism 5 to ensure its stability. When maintenance is required, the pipe connector 34 is first removed, and the branch riser 31 is lifted upwards. The multiplier aeration hose 2 will then move to the right and disengage from the support channel. At this time, one end of the traction rope 42 is still connected to the top of the treatment tank 1, and the other end moves synchronously with the multiplier aeration hose 2 and passes through the support channel. Finally, after the multiplier aeration hose 2 has been repaired or replaced, the branch riser 31 is slowly moved downwards, and the traction rope 42 is pulled to make the traction rope 42 drive the multiplier aeration hose 2 to pass through each support channel again, achieving the purpose of maintenance without stopping production and solving the problem of easy clogging in the existing aeration system.

[0052] In some embodiments, the maintenance mechanism 4 further includes a fixing member 41 located at the top of the treatment pool 1. The top of the fixing member 41 is provided with a first fixed shaft 43, and a winding drum 44 is rotatably connected to the middle of the first fixed shaft 43. The traction rope 42 is wound on the winding drum 44.

[0053] The first fixed shaft 43 is provided with a locking plate 45 at the end away from the fixing member 41, and a number of locking bolts 46 are threadedly connected to the locking plate 45.

[0054] refer to Figure 3 As shown, by rotating the winding drum 44, the traction rope 42 is wound or released, achieving the purpose of moving in conjunction with the branch riser 31, making the use of the traction rope 42 more convenient and stable, and avoiding the traction rope 42 from becoming tangled and causing the rope to become knotted or entangled around the guardrail. Optionally, a crank handle 47 is provided on the end edge of the winding drum 44 away from the fixing member 41 to facilitate the rotation of the winding drum 44. On this basis, rotating the locking bolt 46 causes the locking bolt 46 to abut against the winding drum 44, providing a large static friction force, preventing the winding drum 44 from loosening, and achieving the purpose of locking, further ensuring the stability of the traction rope 42 when it is not in use.

[0055] In some embodiments, the number of support mechanisms 5 in a water treatment area is at least two, and they are evenly arranged and installed at the bottom of the treatment tank 1 along a first direction. Each support mechanism 51 includes several side limiting members 51 evenly arranged at the bottom of the treatment tank 1 along a second direction. Each side limiting member 51 has a second connecting member 52 at its top and bottom. Upper and lower limiting members 53 are provided between adjacent second connecting members 52. Adjacent side limiting members 51 are connected by two upper and lower limiting members 53 to form a support channel. The second direction is... Figure 1 The front and back directions in the middle;

[0056] refer to Figure 1 and Figure 2 , Figure 2The diagram shows a partial schematic of a support mechanism 5. At least two support mechanisms 5 indicate that the left and right ends of the multiplier aeration hose 2 in this area are supported by support mechanisms 5. The more support mechanisms 5 there are, the more stably the multiplier aeration hose 2 is supported. Furthermore, through the cooperation of several side limiting members 51 and the second connecting member 52, multiple support channels can be generated. The support channels of a support mechanism 5 are arranged in the front-back direction, so multiple multiplier aeration hoses 2 can be set in the front-back direction to achieve uniform aeration and improve the aeration effect.

[0057] In some embodiments, a sleeve 57 is provided through the middle of the side limiting member 51 and the two corresponding second connecting members 52, and a pre-embedded stud 54 is provided at the bottom of the treatment pool 1. The pre-embedded stud 54 passes through the sleeve 57, and a support nut 55 and a locking nut 56 are respectively threaded to the bottom and top of the sleeve 57 of the pre-embedded stud 54.

[0058] like Figure 2 As shown, by pre-setting embedded studs 54 at the bottom of the treatment pool 1 and using sleeves 57 to fix the side limiting member 51, the side limiting member 51 can be quickly installed and has good stability after installation, and it is also convenient to disassemble and replace the side limiting member 51 later.

[0059] In some embodiments, the side limiting member 51 is a concave guide wheel that can rotate around the sleeve 57, the second connecting member 52 is a connecting cylinder, and the upper and lower limiting members 53 are rotatable cylinders.

[0060] like Figure 2 As shown, when both the side limiting member 51 and the upper and lower limiting members 53 can rotate, the multiplier aeration hose 2 will be pulled more smoothly before and after maintenance, converting static friction resistance into sliding friction force. On the one hand, this makes pulling easier and more convenient, and on the other hand, it avoids scratches on the surface of the multiplier aeration hose 2 caused by static friction, thus reducing damage to the multiplier aeration hose 2.

[0061] In some embodiments, detection devices 6 are provided inside the first aerobic zone 14, the second anoxic zone 15, and the second aerobic zone 16, and each detection device 6 is electrically connected to the processing device 7; for example Figure 1 As shown, the water quality data detected by the detection device 6 is transmitted to the treatment device 7, allowing for real-time understanding of the water quality situation. It should be noted that the detection device 6 is a commonly used wastewater parameter detection instrument, while the treatment device 7 is the corresponding control terminal, which can also be a computer. These are common technologies and will not be elaborated upon here.

[0062] In some embodiments, the top of each branch riser 31 is detachably connected to the pipe connector 34 via an electric regulating valve 32. Both the electric regulating valve 32 and the aeration fan 35 are electrically connected to the treatment equipment 7. The water quality data detected by the detection equipment 6 is associated with the operating frequency of the aeration fan 35 and the electric regulating valve 32 corresponding to each branch riser 31 through programming, thereby realizing the controllability of dissolved oxygen and aeration time in the pool.

[0063] In some embodiments, an inlet pump 9 is connected to one side of the anaerobic zone 12, and a return pump 8 is connected to the end of the first aerobic zone 14 away from the anaerobic zone 12. The outlet of the return pump 8 is connected to the end of the first anoxic zone 13 near the anaerobic zone 12. Figure 1 As shown, the reflux pump 8 enables the first anoxic zone 13 to receive nitrification reflux liquid from the first aerobic zone 14, with a reflux ratio of 200%. The external carbon source remaining after anaerobic digestion is fully utilized for denitrification and denitrification phosphorus removal, further enhancing the system's nitrogen removal capacity and reducing the amount of subsequent carbon source addition.

[0064] In some embodiments, the processing pool 1 is further provided with a plurality of guide components 10. The guide components 10 include two mounting plates 101, two second fixed shafts 102 are provided between the two mounting plates 101, a branch riser 31 is provided between the two second fixed shafts 102, and a guide wheel 103 that fits with the outer surface of the branch riser 31 is provided between each of the second fixed shafts 102.

[0065] like Figure 4 and Figure 5 As shown, the branch riser 31 is supported and restricted by two guide wheels 103, which makes the branch riser 31 more stable when it is lifted or moved downward, avoiding the situation where the pipe tilts or swings due to shaking, reducing the construction accidents and collision damage between the branch risers 31. In addition, the guide assembly 10 can be installed on the side wall of the treatment tank 1 or on the side wall of the partition wall 11, which has good adaptability.

[0066] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0067] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A low-aeration HC-type wastewater treatment device used in a bardenpho system, characterized in that, include: The treatment tank (1) has an inlet end and an outlet end along the first direction. Several partition walls (11) are arranged inside along the first direction. Each partition wall (11) divides the treatment tank (1) into five water treatment areas. The height of each partition wall (11) gradually decreases along the direction from the inlet end to the outlet end. The five water treatment areas are, in order, an anaerobic zone (12), a first anoxic zone (13), a first aerobic zone (14), a second anoxic zone (15), and a second aerobic zone (16). Several multiplier aeration hoses (2) are respectively disposed at the bottom of the first anoxic zone (13), the first aerobic zone (14), the second anoxic zone (15) and the second aerobic zone (16), and the extension direction of each multiplier aeration hose (2) is the first direction; Several support mechanisms (5) are respectively located at the bottom of the first anoxic zone (13), the first aerobic zone (14), the second anoxic zone (15) and the second aerobic zone (16), and have several support channels through which the multiplier aeration hose (2) passes. The maintenance mechanism (4) includes a traction rope (42) located at the head end of the multiplier aeration hose (2), and the other end of the traction rope (42) is connected to the top of the treatment tank (1). The air supply mechanism (3) includes a branch riser (31) connected to the tail end of the multiplying aeration hose (2). Each branch riser (31) is detachably connected to the main pipeline (33) via a pipe connector (34). An aeration fan (35) is provided at one end of the main pipeline (33).

2. The low-aeration HC-type wastewater treatment equipment applied in the bardenpho system according to claim 1, characterized in that, The maintenance mechanism (4) also includes a fixing member (41) located at the top of the treatment pool (1). The top of the fixing member (41) is provided with a first fixed shaft (43). A winding drum (44) is rotatably connected to the middle of the first fixed shaft (43). The traction rope (42) is wound on the winding drum (44). The first fixed shaft (43) is provided with a locking plate (45) at the end away from the fixing member (41), and a number of locking bolts (46) are threadedly connected to the locking plate (45).

3. The low-aeration HC-type wastewater treatment equipment applied in the bardenpho system according to claim 1, characterized in that, The number of support mechanisms (5) in a water treatment area is at least two, and they are evenly arranged and installed at the bottom of the treatment tank (1) along a first direction. They include a number of side limiting members (51) evenly arranged at the bottom of the treatment tank (1) along a second direction. Each side limiting member (51) has a second connecting member (52) at its top and bottom. Adjacent second connecting members (52) are provided with upper and lower limiting members (53). Adjacent side limiting members (51) are connected by two upper and lower limiting members (53) to form the support channel.

4. The low-aeration HC-type wastewater treatment equipment applied in the bardenpho system according to claim 3, characterized in that, The side limiting member (51) and the two corresponding second connecting members (52) are provided with a sleeve (57) through the middle. The bottom of the treatment pool (1) is provided with a pre-embedded stud (54). The pre-embedded stud (54) passes through the sleeve (57). The pre-embedded stud (54) is threaded with a support nut (55) and a locking nut (56) at the bottom and top of the sleeve (57) respectively.

5. The low-aeration HC-type wastewater treatment equipment applied in the bardenpho system according to claim 4, characterized in that, The side limiting member (51) is a concave guide wheel, which can rotate around the sleeve (57). The second connecting member (52) is a connecting cylinder, and the upper and lower limiting members (53) are rotatable cylinders.

6. The low-aeration HC-type wastewater treatment equipment applied in the bardenpho system according to claim 1, characterized in that, The first aerobic zone (14), the second anoxic zone (15) and the second aerobic zone (16) are each equipped with a detection device (6), and each detection device (6) is electrically connected to the processing device (7).

7. The low-aeration HC-type wastewater treatment equipment applied in the bardenpho system according to claim 6, characterized in that, The top end of each branch riser (31) is detachably connected to the pipe connector (34) via an electric regulating valve (32), and both the electric regulating valve (32) and the aeration blower (35) are electrically connected to the treatment equipment (7).

8. The low-aeration HC-type wastewater treatment equipment applied in the bardenpho system according to claim 1, characterized in that, An inlet pump (9) is connected to one side of the anaerobic zone (12), and a return pump (8) is connected to the end of the first aerobic zone (14) away from the anaerobic zone (12). The outlet of the return pump (8) is connected to the end of the first anoxic zone (13) near the anaerobic zone (12).

9. The low-aeration HC-type wastewater treatment equipment applied in the bardenpho system according to claim 1, characterized in that, The treatment pool (1) is also provided with a number of guide components (10). The guide components (10) include two mounting plates (101), two second fixed shafts (102) are provided between the two mounting plates (101), a branch riser (31) is provided between the two second fixed shafts (102), and a guide wheel (103) that fits with the outer surface of the branch riser (31) is provided between each of the second fixed shafts (102).

10. The low-aeration HC-type wastewater treatment equipment applied in the bardenpho system according to claim 2, characterized in that, The winding spool (44) has a crank handle (47) on the end face edge away from the fixing member (41).

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