Activated sludge tank capable of improving activation efficiency

Abstract

The utility model discloses an activated sludge tank for improving activation efficiency, which is characterized in that a self-rotating aeration component is arranged in the middle of a cross beam, the self-rotating aeration component comprises a rotary connecting seat, a vertical pipe, a transverse pipe and a plurality of pressurizing nozzles, the input end of the rotary connecting seat is connected with a high-pressure air input device, and the output end of the rotary connecting seat is connected to the upper end of the vertical pipe; the vertical pipe rotates around the axis of the vertical pipe in a matched mode. The transverse pipe is horizontally arranged, the two ends of the transverse pipe are closed, the center of the transverse pipe is connected to the vertical pipe, and the transverse pipe and the vertical pipe form a T-shaped air pipe assembly. The number of the pressurizing nozzles is even, the pressurizing nozzles are arranged on the two sides of the transverse pipe respectively, and the air outlet directions of the pressurizing nozzles located on the two sides of the transverse pipe are opposite with the midpoint of the transverse pipe as the boundary. Compared with the prior art, the construction cost of equipment is saved, and the activation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to an activated sludge pool with improved activation efficiency. Background Art

[0002] The activated sludge tank is an important part of the wastewater treatment system. In enterprises, the sewage sources include die-casting wastewater, machining wastewater and surface treatment wastewater. These wastewaters are collected and treated in a unified manner in the wastewater treatment system. The wastewater treatment system includes a collection tank, a regulating tank, an original coagulation reaction tank and multiple sedimentation tanks, a hydrolysis acidification tank, an activated sludge tank, an MBR tank, an ultraviolet disinfection tank and a clear water tank. The wastewater is subjected to sedimentation treatment, acid-base adjustment treatment, filtration treatment and disinfection treatment in each processing tank. Among them, the function of the activated sludge tank is to activate the wastewater containing sludge and microorganisms before it is input into the MBR tank, so that the microorganisms inside the wastewater are evenly distributed, which is convenient for subsequent graded filtration treatment.

[0003] The activated sludge tank in the prior art generally includes an aeration component, which is arranged at the bottom of the tank. The wastewater in the tank is aerated by compressed air to increase the mixing degree of the microorganisms in the tank and activate the microorganisms. For example, the Chinese utility model patent with application number "CN202121977670.0" and patent name "An activated sludge tank" includes a tank body, a sedimentation tank is provided at the left end; a domestic sewage inlet pipe is installed at the right end of the tank body; a guide cylinder; a domestic sewage outlet pipe; a domestic sewage input pipe; a supernatant standard outlet pipe; a compressed air input pipe; an aeration pipe; a return pipe, and the sewage passes through The domestic sewage inlet pipe enters the tank body, and the compressed air enters the aeration pipe through the compressed air input pipe, and enters the bottom of the tank body through the aeration pipe to aerate the domestic sewage entering the tank body. The domestic sewage after aeration treatment enters the guide tube through the domestic sewage input pipe, wherein the supernatant flows out from the guide tube to the upper part of the sedimentation tank, and then flows out through the supernatant standard outlet pipe. The sewage with solid particle impurities enters the lower part of the sedimentation tank from the guide tube, and then is discharged outside the guide tube through the domestic sewage outlet pipe. Among them, the upper part of the sewage flowing through the domestic sewage outlet pipe returns to the tank body through the reflux pipe to continue aeration.

[0004] The activated sludge tank activates the wastewater in the tank by means of various anti-backflow outlet parts on a rotatably arranged horizontal pipe at the bottom of the tank body, and is rotationally driven by an independent rotary drive mechanism. The structure is complex, and the motor needs to run continuously during the activation process, which is very energy-consuming and has a low activation efficiency. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an activated sludge tank with improved activation efficiency. The high-pressure nozzle drives the horizontal pipe to rotate under the action of air pressure, thereby saving equipment construction costs and operating costs, and further improving wastewater activation efficiency.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: an activated sludge pool with improved activation efficiency, including a pool body, a sewage input pipe is provided on one side of the pool body, a high-pressure air input device is provided on the top of the pool body, a crossbeam is provided at the upper opening of the pool body, and a self-rotating aeration component is provided in the middle position of the crossbeam, the self-rotating aeration component includes a rotating connection seat, a vertical pipe, a horizontal pipe and a plurality of boosting nozzles, the input end of the rotating connection seat is connected to the high-pressure air input device, and the output end is connected to the upper end of the vertical pipe; the vertical pipe rotates around its axis; the horizontal pipe is horizontally arranged, and its two ends are closed, and the central part of the horizontal pipe is connected to the vertical pipe, and forms a "T"-shaped air pipe component with it; the number of each boosting nozzle is even, and each boosting nozzle is respectively arranged on both sides of the horizontal pipe, wherein, with the midpoint of the horizontal pipe as the boundary, the air outlet directions of each boosting nozzle located on both sides of the horizontal pipe are oppositely arranged.

[0007] In a further technical solution, a plurality of inclined joints are respectively provided on both sides of the transverse pipe, each inclined joint is respectively inclined upward or downward, the booster nozzles are assembled on the corresponding inclined joints, the jet angles of each booster nozzle are respectively set upward or downward, and the jet angles of each booster nozzle on the same side of the transverse pipe are the same.

[0008] In a further technical solution, the number of booster nozzles arranged on the same side of the transverse pipe is more than three, and the distance between two adjacent booster nozzles becomes larger toward the end of the transverse pipe.

[0009] In a further technical solution, a check valve is connected between the booster nozzle and the inclined joint, the check valve includes a main body, a valve cavity and a valve core, the valve cavity is opened inside the main body, and the valve core is movably arranged in the valve cavity up and down; an input joint is provided on one side of the main body, and an output joint is provided on the other side, the input joint is connected to the inclined joint, the booster nozzle is connected to the output joint, an input air channel is provided between the input joint and the valve cavity, the input air channel is inclined, and the end of the input air channel is connected to the bottom of the valve cavity; an output air channel is provided between the output joint and the valve cavity, the output air channel is horizontally arranged, and the end of the output air channel is connected to the middle and upper part of the valve cavity, when the check valve is opened, the valve core goes up through the output air channel, and the input air channel and the output air channel are in a connected state; when the check valve is closed, the valve core goes down to block the output air channel, and the input air channel and the output air channel are in a disconnected state.

[0010] In a further technical solution, the check valve also includes a top cover, which seals and covers the valve cavity; a return spring is provided between the top cover and the valve core, one end of the return spring is connected to the top cover, and the other end abuts against the valve core, and the return spring is a compression spring, which always has compression elastic potential energy to ensure that the valve core always has a downward movement tendency.

[0011] In a further technical solution, a limit ring is provided on the top of the valve core; the middle and upper part of the valve cavity is expanded to form an assembly part, and a limit shoulder is provided on the bottom of the assembly part. The limit ring of the valve core cooperates with the limit shoulder for limiting, and a pneumatic action space is left between the bottom of the valve core and the bottom of the valve cavity, and the pneumatic action space is connected to the input air duct.

[0012] In a further technical solution, an airtight rubber ring is provided at the bottom of the valve core, and the airtight rubber ring is interference fit with the inner wall of the valve cavity.

[0013] In a further technical solution, the booster nozzle is sequentially formed with a nozzle, a limiting crown and a connecting part, and the connecting part is installed on the output connector by threaded cooperation; the limiting crown is limitedly cooperated with the output connector; the nozzle is arranged in a pointed shape, and a booster air passage with a gradually decreasing inner diameter is provided inside the booster nozzle, wherein an airtight rubber ring is provided on the end face of the connecting part to improve the airtightness of the connection between the booster nozzle and the output connector.

[0014] In a further technical solution, one side of the pool body is provided with a first partition wall and a second partition wall of different heights. Compared with the first partition wall, the first partition wall is higher than the second partition wall, and the first partition wall is closer to the center of the pool body. The first partition wall and the second partition wall enclose a first sedimentation tank, and the second partition wall and the side wall of the pool body enclose a second sedimentation tank, wherein a first reflux pipe is provided at the bottom of the first sedimentation tank, the first reflux pipe is connected to the pool body, and the first reflux pipe is provided with a reflux pump; a second reflux pipe is provided at the bottom of the second sedimentation tank, the first reflux pipe is connected to the pool body, and the first reflux pipe is provided with another reflux pump.

[0015] In a further technical solution, a guide assembly is provided inside the second sedimentation tank, and a spiral guide waterway is provided inside the guide assembly. The bottom opening of the guide waterway is connected to the middle and lower part of the second sedimentation tank, and the top opening of the guide waterway is provided with a clear liquid standard output pipe.

[0016] After adopting the above structure, the advantages of the utility model compared with the prior art are: the utility model provides an activated sludge pool with improved activation efficiency, and the air pipe assembly is pneumatically operated by the booster nozzles arranged in opposite directions on both sides, eliminating the need to set up a motor drive device and saving equipment costs. The booster nozzles can increase the input pressure of high-pressure air, improve its aeration efficiency and activation efficiency; the inclined booster nozzles can further increase the aeration level inside the pool body, and improve the aeration level and efficiency of the wastewater in the pool; a check valve is arranged at the connection of the booster nozzle to prevent wastewater from flowing back, blocking the air pipe assembly, and affecting the output performance of the air pipe assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the axial direction of the transverse tube of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the check valve in the utility model.

[0021] Figure 4 It is a structural schematic diagram of the booster nozzle in the utility model. DETAILED DESCRIPTION

[0022] The following are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention.

[0023] In order to solve the many shortcomings of activated sludge tanks in the prior art, such as the need for independent motor drive during operation, high energy consumption, and low activation efficiency, the inventor proposed a self-rotating aeration component driven by air pressure, which eliminates the need for a motor and a gear transmission structure.

[0024] like Figures 1 to 4As shown, an activated sludge tank for improving activation efficiency includes a tank body 1, a sewage input pipe 11 is provided on one side of the tank body 1, a high-pressure air input device 91 is provided on the top of the tank body 1, a crossbeam 90 is provided at the upper opening of the tank body 1, and a self-rotating aeration component is provided in the middle of the crossbeam 90, and the self-rotating aeration component includes a rotating connection seat 901, a vertical pipe 902, a horizontal pipe 905 and a plurality of booster nozzles 7, the input end of the rotating connection seat 901 is connected to the high-pressure air input device 91, and the output end is connected to the upper end; the vertical pipe 902 rotates around its axis; the horizontal pipe 905 is horizontally arranged, and its two ends are closed. The central part of the horizontal pipe 905 is provided with a three-way joint 904, which is connected to the vertical pipe 902 and forms a "T"-shaped air pipe assembly therewith; the number of each booster nozzle 7 is an even number, and each booster nozzle 7 is respectively arranged on both sides of the horizontal pipe 905, wherein, with the midpoint of the horizontal pipe 905 as the boundary, the gas outlet directions of each booster nozzle 7 located on both sides of the horizontal pipe 905 are opposite.

[0025] The air pipe assembly is pneumatically operated by the booster nozzles 7 arranged oppositely on both sides, eliminating the need for the installation and use of a motor drive device, saving equipment costs. The booster nozzles 7 can increase the input pressure of high-pressure air, thereby improving its aeration efficiency and activation efficiency.

[0026] Specifically, one side of the tank body 1 is provided with a first partition wall 021 and a second partition wall 022 of different heights. Compared with the first partition wall 021 and the second partition wall 022, the first partition wall 021 is higher than the second partition wall 022, and the first partition wall 021 is closer to the center of the tank body 1. The first partition wall 021 and the second partition wall 022 enclose a first sedimentation tank 2, and the second partition wall 022 and the side wall of the tank body 1 enclose a second sedimentation tank 3, wherein the bottom of the first sedimentation tank 2 is provided with a first reflux Pipe 21, the first reflux pipe 21 is connected to the tank body 1, and the first reflux pipe 21 is provided with a reflux pump; a second reflux pipe 31 is provided at the bottom of the second sedimentation tank 3, the second reflux pipe 31 is connected to the tank body 1, and the second reflux pipe 31 is provided with another reflux pump; a guide component 4 is provided inside the second sedimentation tank 3, and a spiral guide waterway 41 is provided inside the guide component 4, the bottom end opening of the guide waterway 41 is connected to the middle and lower part of the second sedimentation tank 3, and the top end opening of the guide waterway 41 is provided with a clear liquid standard output pipe 42.

[0027] Specifically, the second reflux pipe 31 is connected to the main pool reflux pipe 12, the main pool reflux pipe 12 is connected to the pool body 1, and is provided with a water stop valve, which can independently select the reflux operation or flow to the previous round of processing equipment in the system.

[0028] Among them, the height of the first partition wall 021 is smaller than the tank body 1. During the activation treatment process, as the sewage inlet pipe 11 continuously inputs sewage, the sewage level inside the tank body 1 rises and does not exceed the first partition wall 021, and the sewage flows into the first sedimentation tank 2; similarly, the sewage in the first sedimentation tank 2 does not pass the second partition wall 022 and flows into the second sedimentation tank 3 to achieve secondary sedimentation treatment.

[0029] Specifically, a plurality of inclined joints 9051 are provided on both sides of the transverse pipe 905, and each inclined joint 9051 is tilted upward or downward. The booster nozzle 7 is assembled on the corresponding inclined joint 9051, and the jet angle of each booster nozzle 7 is tilted upward or downward. The jet angles of the booster nozzles 7 on the same side of the transverse pipe 905 are the same.

[0030] The inclined booster nozzle 7 can further improve the aeration degree inside the pool body, improve the aeration degree and efficiency of the wastewater in the pool. In the present embodiment, the nozzles of the two groups of self-rotating aeration components have the same jet direction, and can also be arranged into two different groups of self-rotating aeration components, with the nozzles of one group of self-rotating aeration components inclined downward and the nozzles of the other group of self-rotating aeration components inclined upward, which is not limited to the combination shown in the present embodiment.

[0031] Specifically, the number of booster nozzles 7 on the same side of the transverse pipe 905 is more than three, and the spacing between two adjacent booster nozzles 7 increases toward the end of the transverse pipe 905. The arrangement of booster nozzles 7 with gradually increasing spacing can improve the activation efficiency inside the tank body 1, while ensuring that the self-rotating aeration assembly can rotate smoothly.

[0032] Specifically, a check valve 8 is connected between the boost nozzle 7 and the inclined joint 9051. The check valve 8 includes a main body 81, a valve cavity 82 and a valve core 83. The valve cavity 82 is opened inside the main body 81, and the valve core 83 is movably arranged in the valve cavity 82 up and down; an input connector 86 is provided on one side of the main body 81, and an output connector 87 is provided on the other side. The input connector 86 is connected to the inclined joint 9051, and the boost nozzle 7 is connected to the output connector 87. An input air channel 861 is provided between the input connector 86 and the valve cavity 82, and the input air channel 861 is inclined. The end of the input air channel 861 is connected to the bottom of the valve cavity 82; an output air channel 871 is provided between the output connector 87 and the valve cavity 82, and the output air channel 871 is horizontally arranged. The end of the output air channel 871 is connected to the middle and upper part of the valve cavity 82. When the check valve 8 is opened, the valve core 83 ascends through the output air channel 871, and the input air channel 861 and the output air channel 871 are in a connected state; when the check valve 8 is closed, the valve core 83 descends to block the output air channel 871, and the input air channel 861 and the output air channel 871 are in a disconnected state.

[0033] The check valve 5 is arranged at the connection of the boost nozzle 7 to prevent the waste water from flowing back and blocking the air pipe assembly, thereby affecting the output performance of the air pipe assembly.

[0034] Specifically, the check valve 8 also includes a top cover 85, which seals and covers the valve cavity 82; a return spring 84 is provided between the top cover 85 and the valve core 83, one end of the return spring 84 is connected to the top cover 85, and the other end abuts against the valve core 83, and the return spring 84 is a compression spring, which always has compression elastic potential energy to ensure that the valve core 83 always has a downward movement tendency.

[0035] Specifically, a limiting ring 832 is provided on the top of the valve core 83; the middle and upper part of the valve cavity 82 is expanded to form an assembly part 821, and a limiting shoulder is provided on the bottom of the assembly part 821. The limiting ring 832 of the valve core 83 cooperates with the limiting shoulder to limit the position, and a pneumatic action space is left between the bottom of the valve core 83 and the bottom of the valve cavity 82, and the pneumatic action space is connected to the input air duct 861.

[0036] Specifically, an airtight rubber ring 831 is provided at the bottom of the valve core 83 , and the airtight rubber ring 831 is interference fit with the inner wall of the valve cavity 82 .

[0037] Specifically, the boost nozzle 7 is sequentially formed with a nozzle, a limiting crown and a connecting part, and the connecting part is installed on the output connector 87 by threaded cooperation; the limiting crown is limitedly cooperated with the output connector 87; the nozzle is arranged in a pointed shape, and a boost air passage with a gradually decreasing inner diameter is provided inside the boost nozzle 7, wherein an airtight rubber ring 831 is provided on the end face of the connecting part, which is used to improve the airtightness of the connection between the boost nozzle 7 and the output connector 87.

[0038] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. An activated sludge tank for improving activation efficiency, comprising a tank body (1), a sewage input pipe (11) is provided on one side of the tank body (1), and a high-pressure air input device (91) is provided on the top of the tank body (1), characterized in that: A crossbeam (90) is provided at the upper opening of the pool body (1), and a self-rotating aeration assembly is provided at the middle position of the crossbeam (90), the self-rotating aeration assembly comprising a rotating connection seat (901), a vertical pipe (902), a horizontal pipe (905) and a plurality of boosting nozzles (7), the input end of the rotating connection seat (901) is connected to a high-pressure air input device (91), and the output end is connected to the upper end of the vertical pipe (902); the vertical pipe (902) is self-rotating around its axis; the horizontal pipe (905) is horizontally arranged, and its two ends are closed, and the central part of the horizontal pipe (905) is connected to the vertical pipe (902) to form a "T"-shaped air pipe assembly; the number of each boosting nozzle (7) is an even number, and each boosting nozzle (7) is respectively arranged on both sides of the horizontal pipe (905). Wherein, with the midpoint of the transverse tube (905) as the boundary, the gas outlet directions of the booster nozzles (7) located on both sides of the transverse tube (905) are arranged in opposite directions.

2. The activated sludge tank for improving activation efficiency according to claim 1, characterized in that: A plurality of inclined joints (9051) are respectively provided on both sides of the transverse pipe (905), each inclined joint (9051) is respectively arranged to be inclined upward or downward, the booster nozzle (7) is assembled on the corresponding inclined joint (9051), the jetting angle of each booster nozzle (7) is respectively arranged to be upward or downward, and the jetting angles of each booster nozzle (7) on the same side of the transverse pipe (905) are the same.

3. The activated sludge tank with improved activation efficiency according to claim 2, characterized in that: The number of the booster nozzles (7) arranged on the same side of the transverse tube (905) is more than three, and the distance between two adjacent booster nozzles (7) increases toward the end of the transverse tube (905).

4. The activated sludge tank for improving activation efficiency according to claim 3, characterized in that: A check valve (8) is connected between the booster nozzle (7) and the inclined joint (9051), the check valve (8) comprising a main body (81), a valve chamber (82) and a valve core (83), the valve chamber (82) being arranged inside the main body (81), and the valve core (83) being arranged in the valve chamber (82) in an upward and downward movable manner; an input joint (86) is arranged on one side of the main body (81), and an output joint (87) is arranged on the other side; the input joint (86) is connected to the inclined joint (9051), and the booster nozzle (7) is connected to the output joint (87). An input air channel (861) is provided between the input connector (86) and the valve chamber (82), the input air channel (861) is arranged in an inclined manner, and the end of the input air channel (861) is connected to the bottom of the valve chamber (82); an output air channel (871) is provided between the output connector (87) and the valve chamber (82), the output air channel (871) is arranged horizontally, and the end of the output air channel (871) is connected to the middle and upper part of the valve chamber (82); when the check valve (8) is opened, the valve core (83) moves upward through the output air channel (871), and the input air channel (861) and the output air channel (871) are in a connected state; when the check valve (8) is closed, the valve core (83) moves downward to block the output air channel (871), and the input air channel (861) and the output air channel (871) are in a disconnected state.

5. The activated sludge tank with improved activation efficiency according to claim 4, characterized in that: The check valve (8) further comprises a top cover (85), which seals and covers the valve cavity (82); a return spring (84) is provided between the top cover (85) and the valve core (83), one end of the return spring (84) is connected to the top cover (85), and the other end abuts against the valve core (83); the return spring (84) is a compression spring, and the return spring (84) always has compression elastic potential energy, so as to ensure that the valve core (83) always has a downward movement tendency.

6. The activated sludge tank for improving activation efficiency according to claim 5, characterized in that: A limiting ring (832) is provided at the top of the valve core (83); the middle and upper part of the valve cavity (82) is expanded to form an assembly part (821); a limiting shoulder is provided at the bottom of the assembly part (821); the limiting ring (832) of the valve core (83) cooperates with the limiting shoulder in limiting manner; a pneumatic action space is reserved between the bottom of the valve core (83) and the bottom of the valve cavity (82); and the pneumatic action space is connected to the input air channel (861).

7. An activated sludge tank for improving activation efficiency according to claim 6, characterized in that: An airtight rubber ring (831) is provided at the bottom of the valve core (83), and the airtight rubber ring (831) is interference-fitted with the inner wall of the valve cavity (82).

8. The activated sludge tank with improved activation efficiency according to claim 7, characterized in that: The booster nozzle (7) is formed with a nozzle, a limiting crown and a connecting part in sequence, and the connecting part is installed on the output connector (87) by threaded cooperation; the limiting crown is limitedly cooperated with the output connector (87); the nozzle is arranged in a pointed shape, and a booster air passage with a gradually decreasing inner diameter is arranged inside the booster nozzle (7). The end surface of the connection portion is provided with an airtight rubber ring (831) for improving the airtightness of the connection between the booster nozzle (7) and the output connector (87).

9. The activated sludge tank with improved activation efficiency according to claim 1, characterized in that: A first partition wall (021) and a second partition wall (022) of different heights are provided on one side of the tank body (1); compared with the second partition wall (022), the first partition wall (021) is higher than the second partition wall (022), and the first partition wall (021) is closer to the center of the tank body (1); the first partition wall (021) and the second partition wall (022) enclose a first sedimentation tank (2); the second partition wall (022) and the side wall of the tank body (1) enclose a second sedimentation tank (3); A first reflux pipe (21) is provided at the bottom of the first sedimentation tank (2), the first reflux pipe (21) is connected to the tank body (1), and the first reflux pipe (21) is provided with a reflux pump; a second reflux pipe (31) is provided at the bottom of the second sedimentation tank (3), the second reflux pipe (31) is connected to the tank body (1), and the second reflux pipe (31) is provided with another reflux pump.

10. An activated sludge tank with improved activation efficiency according to claim 9, characterized in that: A guide assembly (4) is provided inside the second sedimentation tank (3), a spiral guide waterway (41) is provided inside the guide assembly (4), the bottom opening of the guide waterway (41) is connected to the middle and lower part of the second sedimentation tank (3), and the top opening of the guide waterway (41) is provided with a clear liquid standard output pipe (42).

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