Multifunctional biological aerated filter for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a multifunctional biological aerated filter for sewage treatment, which comprises a filter body, a filter material layer, a water distribution part, an aeration part, a backwashing part and a drainage part, the movable aeration group comprises a plurality of aeration movable components, and is used for monitoring the movable position of each aeration movable component and the corresponding microorganism dissolved oxygen condition in real time; the monitoring assembly is used for monitoring obstacles around the aeration movable assemblies in real time, the adjusting assembly is used for adjusting the positions of the aeration movable assemblies, and the energy supply assembly is used for supplying power to the assemblies. The sewage treatment efficiency of the biological aerated filter is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a multifunctional aerated biological filter for wastewater treatment. Background Technology

[0002] Biologically aerated filters (BAF) are a novel biological wastewater treatment technology. The working principle of a BAF is as follows: the filter is filled with granular filter media, and a highly active biofilm grows on the surface of the media. When wastewater flows through the filter media layer, the organic pollutants in the wastewater are adsorbed by the microorganisms in the biofilm. Simultaneously, air is introduced into the filter media, forming bubbles. As these bubbles rise between the filter media, they vaporize the organic matter and ammonia nitrogen in the wastewater, providing oxygen for the microorganisms to respire, thus improving the wastewater treatment efficiency.

[0003] In practical applications, aerated biological filters typically operate in either an upflow or downflow mode. In the upflow mode, wastewater enters from the bottom of the filter, flows upwards through the filter media, undergoes biodegradation and filtration, and then exits from the top. Simultaneously, the aeration system provides oxygen to the microorganisms from the bottom. In the downflow mode, wastewater enters from the top of the filter and flows downwards through the filter media. The aeration system generally provides oxygen to the microorganisms from the bottom or middle of the filter.

[0004] Chinese Patent Publication No. CN206955738U discloses a multifunctional aerated biological filter for sewage treatment, including a tank body. A water distribution channel and a drainage channel are arranged side by side in the tank body. An inlet pipe is provided at one end of the water distribution channel and a sewage discharge pipe is provided at one end of the drainage channel. A packing layer, a filter media layer, a support layer and a filter plate are arranged in sequence below the water distribution channel and the drainage channel. A water outlet area is provided at the bottom of the tank body below the filter plate, and a water outlet pipe is provided on one side of the water outlet area.

[0005] While the above technical solution solves the problem that the bottom water distribution channel of the existing aeration tank is often blocked by silt, requiring complete emptying and cleaning, which is labor-intensive and time-consuming, it does not consider the impact of excessive or insufficient aeration on microorganisms and the water filtration effect. Utility Model Content

[0006] Therefore, this utility model provides a multifunctional aerated biological filter for sewage treatment, which overcomes the problem that existing aerated biological filters do not consider the impact of excessive or insufficient aeration on microorganisms and on water filtration efficiency.

[0007] To achieve the above objectives, this utility model provides a multifunctional aerated biological filter for wastewater treatment, comprising:

[0008] The pool body, wherein the inner wall of the pool body is provided with a magnetic adsorption part;

[0009] The filter media layer is evenly distributed in the middle of the pool along the vertical direction to biodegrade organic matter in the wastewater and filter impurities in the wastewater.

[0010] The water distribution section has one end connected to an external sewage source and the other end located above the filter media layer, which is used to introduce sewage into the filter tank and make the sewage flow evenly into the filter media layer;

[0011] An aeration unit includes a movable aeration group disposed on the upper side of the filter media layer, a fixed aeration group disposed on the lower side of the filter media layer, and an air inlet distribution group for supplying air to the movable aeration group and the fixed aeration group. The aeration unit is connected to an external air source through a pipeline to supply oxygen to the filter media layer.

[0012] A backwashing section is provided below the filter media layer for backwashing the filter media layer.

[0013] A drainage section, which is connected to the bottom of the pool, is used to collect the treated wastewater and discharge it.

[0014] Furthermore, the movable aeration unit includes:

[0015] Several aeration components are arranged above the filter media layer to aerate the filter media layer.

[0016] Support bracket, which is fixedly connected to the filter tank wall, is used to support the aeration moving components;

[0017] The monitoring component, which is connected to each aeration activity component, includes a position sensor, a dissolved oxygen sensor, and an image sensor.

[0018] The adjustment component includes a magnetic adsorption module disposed at the bottom of the aeration active component, which is used to adsorb and fix the aeration active component to the magnetic adsorption part to achieve precise aeration.

[0019] The power supply component is connected to the aeration activity component, the monitoring component, and the adjustment component respectively, and is used to supply power to each component.

[0020] Furthermore, the adjustment component includes:

[0021] A magnetic adsorption module is installed at the bottom of the aeration active component to adsorb and fix the aeration active component to the magnetic adsorption part to achieve precise aeration.

[0022] Furthermore, the intake distribution group consists of a main intake pipe and several branch intake pipes.

[0023] The main air intake pipe is connected to an external air source to introduce gas into the filter tank;

[0024] The branch air inlet pipe extends from the main air inlet pipe and is used to supply air to the movable aeration group and the fixed aeration group.

[0025] Furthermore, the aeration assembly includes a movable aeration nozzle for aerating the filter media layer and a rotating assembly for adjusting the aeration direction of the movable aeration nozzle, wherein...

[0026] The movable aeration nozzle is connected to the branch air inlet pipe via a rotating assembly, the rotating assembly comprising:

[0027] The first drive motor is the power source for the rotating component, and its output shaft is connected to the transmission module.

[0028] A transmission module, which is connected to the output shaft, is used to transmit the rotational motion of the first drive motor to the movable aeration nozzle.

[0029] Furthermore, the transmission module consists of a driving gear and a driven gear. The driving gear is connected to the output shaft of the first drive motor, and the driven gear is fixedly connected to the movable aeration nozzle. The driven gear cooperates with the driving gear.

[0030] Furthermore, the rotating assembly is also equipped with an angle sensor to monitor the rotation angle of the moving aeration nozzle in real time in order to adjust the aeration direction.

[0031] Furthermore, the adjustment component includes:

[0032] Micro-propellers are evenly distributed around the aeration components to provide power to move the aeration components. The micro-propellers are of propeller design.

[0033] The second drive motor is connected to the micro-propeller and is used to drive the propeller-type micro-propeller to rotate, so as to realize the translational movement of the aeration moving component.

[0034] Furthermore, the fixed aeration group includes branch air inlet pipes and fixed aeration nozzles, wherein,

[0035] The branch air inlet pipes are evenly distributed below the filter media layer, and the fixed aeration nozzles are fixed by fixed brackets, which are distributed in a grid or array below the filter media layer.

[0036] Furthermore, both the movable and fixed aeration nozzles have a plurality of air holes evenly distributed on their surfaces to release gas into the wastewater in the form of microbubbles.

[0037] A filter membrane is installed at several air holes on the inner side of both the movable aeration nozzle and the fixed aeration nozzle to prevent impurities in the sewage from entering the air holes.

[0038] Compared with the prior art, the beneficial effects of this utility model are that it sets up a fixed aeration group and a movable aeration group. The fixed aeration group can provide a stable and basic oxygen supply, while the movable aeration group can adjust the aeration position and direction according to the microbial dissolved oxygen monitoring results and the activity position monitoring results, so as to quickly replenish oxygen and effectively improve the uniformity of oxygen distribution in the entire filter bed. This allows microorganisms to be in a good survival and metabolic state throughout the filter media layer, thereby improving the treatment efficiency and long-term operational stability of the filter bed and further enhancing the efficiency of the aerated biological filter bed in treating sewage.

[0039] Furthermore, the movable aeration unit of this utility model includes several movable aeration components. The movable aeration components are connected to the branch air inlet pipes through rotating components. The movable aeration nozzles inside the movable aeration components are adjusted by rotating components to achieve uniform aeration above the filter media layer, further improving aeration flexibility. This allows microorganisms to be in a good state of survival and metabolism throughout the filter media layer, improving the treatment efficiency and long-term operational stability of the filter, and enhancing the efficiency of the aerated biological filter in treating wastewater.

[0040] Furthermore, this utility model is equipped with a rotating component, which includes a transmission module, a first drive motor, and an angle sensor. The first drive motor serves as the power source, and the transmission module drives the movable aeration nozzle to rotate, which further facilitates the adjustment of the aeration angle of the movable aeration nozzle, ensures the stability of the aeration angle, effectively improves the uniformity of oxygen distribution in the entire filter, and further enhances the efficiency of the aerated biological filter in treating wastewater.

[0041] Furthermore, the micro-propeller and the second drive motor in the adjustment component of this utility model work together to realize the position movement of the aeration moving component, so that the aeration moving component can be flexibly adjusted in position within the filter as needed. Meanwhile, the magnetic adsorption module can fix the aeration moving component in a specific position to ensure the accuracy of aeration. Together, they improve the aeration effect and sewage treatment capacity of the aerated biological filter, enhance aeration flexibility, and improve the sewage treatment efficiency of the aerated biological filter. Attached Figure Description

[0042] Figure 1 This is a structural block diagram of the aeration unit in an embodiment of the present invention;

[0043] Figure 2 This is a structural block diagram of the movable aeration group according to an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of the structure of a multifunctional aerated biological filter for wastewater treatment according to an embodiment of this utility model;

[0045] Figure 4 This is a schematic diagram of the structure of the movable aeration group according to an embodiment of the present invention;

[0046] In the diagram: 1, tank body; 2, filter media layer; 3, water distribution section; 4, external sewage source; 5, external air source; 61, movable aeration group; 611, movable aeration nozzle; 612, support bracket; 613, micro propeller; 62, fixed aeration group; 631, main air inlet pipe; 632, branch air inlet pipe; 7, backwash section; 71, backwash water inlet pipe; 72, backwash air inlet pipe; 8, drainage section; 9, several air holes. Detailed Implementation

[0047] To make the objectives and advantages of this utility model clearer, the utility model will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0048] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0049] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0050] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Please see Figure 1 , Figure 2 , Figure 3 As shown, Figure 1 This is a structural block diagram of the aeration unit in an embodiment of the present invention; Figure 2 This is a structural block diagram of the movable aeration group according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a multifunctional aerated biological filter for wastewater treatment according to an embodiment of this utility model;

[0052] Specifically, this utility model provides a multifunctional aerated biological filter for wastewater treatment, comprising:

[0053] Pool 1, the inner wall of which is provided with a magnetic adsorption part;

[0054] The filter media layer 2 is distributed at equal intervals along the vertical direction in the middle of the pool body 1, and is used to biodegrade organic matter in the sewage and filter impurities in the sewage.

[0055] The water distribution section 3 has one end connected to the external sewage source 4 and the other end located above the filter media layer 2, which is used to introduce sewage into the filter tank and make the sewage flow evenly into the filter media layer 2.

[0056] The aeration unit includes a movable aeration group 61 disposed on the upper side of the filter layer 2, a fixed aeration group 62 disposed on the lower side of the filter layer 2, and an air inlet distribution group for supplying air to the movable aeration group 61 and the fixed aeration group 62. The aeration unit is connected to an external air source 5 through a pipeline to supply oxygen to the filter layer 2.

[0057] A backwashing section 7 is disposed below the filter media layer 2 for backwashing the filter media layer 2.

[0058] The drainage section 8 is connected to the bottom of the pool body 1 and is used to collect the treated sewage and discharge it.

[0059] Specifically, the movable aeration unit 61 includes:

[0060] Several aeration components are arranged above the filter media layer 2 to aerate the filter media layer 2.

[0061] Support bracket 612 is fixedly connected to the filter tank wall to support the aeration moving components;

[0062] The monitoring component, which is connected to each aeration activity component, includes a position sensor, a dissolved oxygen sensor, and an image sensor.

[0063] The adjustment component includes a magnetic adsorption module disposed at the bottom of the aeration active component, which is used to adsorb and fix the aeration active component to the magnetic adsorption part to achieve precise aeration.

[0064] A power supply component, which is connected to the aeration activity component, the monitoring component and the adjustment component respectively, is used to supply power to each component;

[0065] It is understood that the position sensor is used to monitor the activity position of each aeration component in real time; the dissolved oxygen sensor is used to monitor the dissolved oxygen level of the microorganisms; and the image sensor is used to monitor obstacles around each aeration component in real time. When the aerated biological filter is working, wastewater from the external wastewater source 4 is introduced into the filter through the water distribution section 3 and flows evenly into the filter media layer 2, which is located in the middle of the tank body 1 and is evenly spaced vertically. The filter media layer 2 biodegrades organic matter in the wastewater and filters impurities. In the aeration section, the fixed aeration group 62 and the movable aeration group 61 obtain oxygen from the external air source 5 through the air intake distribution group to supply oxygen to the filter media layer 2. The aeration components of the movable aeration group 61 are positioned above the filter media layer 2 for aeration. The monitoring component monitors the activity position of each aeration component, the dissolved oxygen level of the microorganisms, and surrounding obstacles in real time, and the power supply component supplies power to each component. Furthermore, the backwashing section 7 is located below the filter media layer 2 and periodically backwashes the filter media layer 2 to ensure the normal operation of the filter.

[0066] Understandably, the distribution of microorganisms in filter media layer 2 is not completely uniform, and the flow of wastewater within the filter media layer is also quite complex. By adjusting the aeration direction and position of the movable aeration nozzles 611, oxygen can be distributed more evenly in the filter media layer, better meeting the oxygen requirements of microorganisms in different locations.

[0067] Understandably, the magnetic adsorption module is located at the bottom of the aeration moving component, and its function is to adsorb and fix the aeration moving component to the side of the tank body 1 of the aerated biological filter. In some cases, when it is necessary for the aeration moving component to stay in a precise position for aeration, the magnetic adsorption module can play a role. For example, when the required oxygen concentration on the side of the filter body 1 decreases, the second drive motor drives the micro propeller 613 to move the aeration moving component to the side of the tank body 1. The magnetic adsorption module can adsorb the aeration moving component onto the magnetic adsorption part, stabilizing the aeration moving component for precise aeration. This prevents the aeration moving component from shifting position due to water flow or other factors, ensuring the accuracy of the aeration position and improving the aeration effect and efficiency.

[0068] In one specific embodiment, the multifunctional aerated biological filter includes a control unit connected to the aeration unit, which is used to determine the adjustment method for the position of the aeration unit and the adjustment method for the aeration direction of the aeration unit based on the microbial dissolved oxygen monitoring results and the activity position monitoring results.

[0069] In one specific embodiment, the filter media layer 2 is composed of a mixture of filter media with different particle sizes and materials. The filter media layer 2 consists of two layers: an upper suspended packing layer and a lower ceramic packing layer. The suspended packing layer provides a large surface area for microbial attachment, promoting the proliferation of microorganisms. The rough and porous surface of the ceramic packing layer effectively removes suspended solids from the wastewater, preventing large accumulations of suspended solids in the lower layer and optimizing the suspended solids removal process. The water distribution section 3 is located at the top of the tank body 1 and uses a rotary water distributor for water distribution. The backwashing section 7 consists of a backwashing inlet pipe 71, a backwashing air inlet pipe 72, a backwashing water pump, a backwashing water tank, an inlet valve, an air inlet valve, and a backwashing air source. The filter media layer 2 is backwashed through the backwashing inlet pipe 71 and the backwashing air inlet pipe 72. A fixed aeration group 62 is located at the bottom of the filter media layer 2 in the tank body 1, providing the basic oxygen required for microbial growth; a movable aeration group 61 is located at the top of the filter media layer 2, used to enhance the stirring and oxidation of pollutants in the wastewater.

[0070] In one specific embodiment, the height of the support bracket 612 is adjustable. By adjusting the height of the bracket, the aeration active component is positioned in a suitable location, which can effectively deliver oxygen to the filter media layer without conflicting with the water distribution path of the water distribution section 3. In practice, the height of the support bracket 612 can be determined according to the actual situation, and is not specifically limited here.

[0071] This invention features a fixed aeration group 62 and a movable aeration group 61. The fixed aeration group 62 provides a stable and basic oxygen supply, while the movable aeration group 61 adjusts the aeration position and direction based on microbial dissolved oxygen monitoring results and activity position monitoring results to quickly replenish oxygen. This effectively improves the uniformity of oxygen distribution throughout the filter bed, ensuring that microorganisms are in a good state of survival and metabolism throughout the filter media layer. Consequently, it improves the treatment efficiency and long-term operational stability of the filter bed, further enhancing the efficiency of the aerated biological filter in treating wastewater.

[0072] Specifically, the intake distribution group consists of a main intake pipe 631 and several branch intake pipes 632.

[0073] The main air inlet pipe 631 is connected to an external air source 5 to introduce gas into the filter tank;

[0074] The branch air inlet pipe 632 extends from the main air inlet pipe 631 and is used to supply air to the movable aeration group 61 and the fixed aeration group 62.

[0075] In one specific embodiment, preferably, the external air source 5 can be an air compressor, through which gas (mainly oxygen) is introduced into the biological aeration filter via the main air inlet pipe 631. Branch air inlet pipes 632 extend from the main air inlet pipe 631, supplying gas to the movable aeration group 61 and the fixed aeration group 62 respectively. In practice, the external air source 5 can also be other devices capable of providing oxygen; specific limitations are not specified here, and further details will not be provided.

[0076] Specifically, the aeration assembly includes a movable aeration nozzle 611 for aerating the filter layer 2 and a rotating assembly for adjusting the aeration direction of the movable aeration nozzle.

[0077] The movable aeration nozzle 611 is connected to the branch air inlet pipe 632 via a rotating assembly. The rotating assembly is used to adjust the aeration direction of the movable aeration nozzle 611 to achieve multi-angle aeration.

[0078] Understandably, the rotating assembly serves to connect the movable aeration nozzle 611 and the branch air inlet pipe 632. The rotating assembly acts as a movable joint in the air inlet pipe, enabling the movable aeration nozzle 611 to achieve multi-angle aeration.

[0079] The movable aeration unit 61 of this utility model includes several movable aeration components. The movable aeration components are connected to the branch air inlet pipe 632 through rotating components. The movable aeration nozzles 611 inside the movable aeration components are adjusted by rotating components to achieve uniform aeration above the filter media layer 2, further improving aeration flexibility. This allows microorganisms to be in a good state of survival and metabolism throughout the filter media layer, improving the treatment efficiency and long-term operational stability of the filter, and enhancing the efficiency of the aerated biological filter in treating wastewater.

[0080] Specifically, the rotating component includes:

[0081] The first drive motor is the power source for the rotating component, and its output shaft is connected to the transmission module.

[0082] A transmission module, which is connected to the output shaft, is used to transmit the rotational motion of the first drive motor to the movable aeration nozzle 611.

[0083] Specifically, the transmission module consists of a driving gear and a driven gear. The driving gear is connected to the output shaft of the first drive motor, and the driven gear is fixedly connected to the movable aeration nozzle 611. The driven gear cooperates with the driving gear.

[0084] Understandably, the first drive motor is the power source for the rotating component, providing kinetic energy for the rotation of the rotating component. The transmission module consists of a drive gear and a driven gear. When the first drive motor rotates, the drive gear will rotate accordingly. When the drive gear rotates, the driven gear will rotate. Through the meshing of the drive gear and the driven gear, the rotational motion of the motor is transmitted to the movable aeration nozzle 611.

[0085] Specifically, the rotating assembly is also equipped with an angle sensor to monitor the rotation angle of the movable aeration nozzle 611 in real time in order to adjust the aeration direction.

[0086] It is understood that this utility model incorporates an angle sensor to adjust the aeration direction by monitoring the rotation angle of the movable aeration nozzle 611 in real time. For example, when it is necessary to adjust the movable aeration nozzle 611 to a specific angle for aeration, the control unit can control the rotation of the first drive motor based on the data fed back by the angle sensor, so that the movable aeration nozzle 611 can be accurately rotated to the required angle, thereby achieving precise control of the aeration direction.

[0087] This utility model is equipped with a rotating component, which includes a transmission module, a first drive motor, and an angle sensor. The first drive motor serves as the power source, and the transmission module drives the movable aeration nozzle 611 to rotate, which further facilitates the adjustment of the aeration angle of the movable aeration nozzle 611, ensures the stability of the aeration angle, effectively improves the uniformity of oxygen distribution in the entire filter, and further enhances the efficiency of the aerated biological filter in treating wastewater.

[0088] Please see Figure 4 As shown, Figure 4 This is a schematic diagram of the structure of the movable aeration group according to an embodiment of the present invention; specifically, the adjustment component includes:

[0089] Micro-propellers 613 are evenly distributed around the aeration active component to provide power to the aeration active component and move the aeration active component. The micro-propellers 613 are of propeller type design.

[0090] The second drive motor is connected to the micro-propeller 613 and is used to drive the propeller-type micro-propeller 613 to rotate, so as to realize the translational movement of the aeration active component.

[0091] Understandably, the rotation of the micro-propeller 613 generates the power to move the aeration active component, and the second drive motor generates the power to propel the micro-propeller 613. Driven by the second drive motor, the micro-propeller 613 moves the aeration active component to the desired position (lower oxygen level) to change the aeration position, so that oxygen can be supplied more precisely to the required location, thus achieving dynamic adjustment of the aeration position.

[0092] In one specific embodiment, the pool wall of the pool body 1 has a magnetic adsorption module for providing magnetic force. The magnetic adsorption module and the magnetic components on the pool wall of the pool body 1 cooperate with each other. For example, if the required oxygen concentration on the side of the pool body 1 is detected to be lower than a preset concentration threshold, the preset concentration threshold is 2 mg / L. The aeration active component is moved to this position by the micro propeller 613, and then the magnetic adsorption module is used for adsorption and fixation to improve the accuracy of aeration.

[0093] The micro-propeller 613 and the second drive motor in the adjustment component of this utility model work together to realize the position movement of the aeration moving component, so that the aeration moving component can be flexibly adjusted in position within the filter as needed. The magnetic adsorption module can fix the aeration moving component in a specific position to ensure the accuracy of aeration. Together, they improve the aeration effect and sewage treatment capacity of the aerated biological filter, enhance aeration flexibility, and improve the sewage treatment efficiency of the aerated biological filter.

[0094] Specifically, the fixed aeration group 62 includes a branch air inlet pipe 632 and a fixed aeration nozzle, wherein,

[0095] The branch air inlet pipes 632 are evenly distributed below the filter media layer 2, and the fixed aeration nozzles are fixed by fixed brackets, which are distributed in a grid or array below the filter media layer 2.

[0096] Understandably, bottom aeration is intended to utilize the buoyancy of gases. As the bubbles rise, they come into full contact with the wastewater, increasing the contact time and area between oxygen and wastewater, thus making the oxygen more evenly distributed throughout the wastewater in the filter.

[0097] In one specific embodiment, each branch air inlet pipe 632 is provided with a gas flow regulator to adjust the gas flow rate. The number of branch air inlet pipes 632 of the fixed aeration group 62 can be determined according to the distribution of the fixed support. For example, if the fixed support is grid-shaped, the branch air inlet pipes 632 are located at the intersection of the grid lines of the fixed support.

[0098] Specifically, the movable aeration nozzle 611 and the fixed aeration nozzle have a plurality of air holes 9 evenly distributed on their surfaces to release gas into the wastewater in the form of microbubbles.

[0099] A filter membrane is provided at several air holes 9 on the inner side of the movable aeration nozzle 611 and the fixed aeration nozzle to prevent impurities in the sewage from entering the air holes 9.

[0100] Understandably, both the movable aeration nozzle 611 and the fixed aeration nozzle have a number of evenly distributed air holes 9 on their surfaces. This releases gas into the wastewater in the form of tiny bubbles. These tiny bubbles rise slowly in the wastewater, allowing for sufficient contact between oxygen and the wastewater. This promotes oxygen absorption by microorganisms in the filter media layer 2, aids in the biodegradation of organic matter, and improves the efficiency of the entire aeration process. Furthermore, the filter membrane prevents impurities and suspended particles in the wastewater from entering the aeration nozzles through the air holes 9, thus avoiding clogging and ensuring optimal aeration performance.

[0101] In practice, the pore diameter ranges from 0.05 mm to 0.08 mm, and preferably, the pore diameter is 0.07 mm. In practice, the pore diameter can be determined according to actual conditions; no specific limitation is made here, nor will it be elaborated further.

[0102] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A multifunctional aerated biological filter for wastewater treatment, characterized in that, The utility model relates to a filter pool for sewage treatment, comprising: a pool body, the inner wall of which is provided with a magnetic adsorption part; a filter material layer, which is distributed in the middle of the pool body at equal intervals in the vertical direction, is used for biological degradation of organic matter in sewage and filtration of impurities in sewage; a water distribution part, one end of which is connected with an external sewage source and the other end of which is located above the filter material layer, is used for introducing sewage into the filter pool and making the sewage uniformly flow into the filter material layer; an aeration part, which comprises a movable aeration group provided on the upper side of the filter material layer, a fixed aeration group provided on the lower side of the filter material layer, and an air inlet distribution group used for supplying air to the movable aeration group and the fixed aeration group, is connected with an external air source through a pipeline and is used for providing oxygen to the filter material layer; a backwashing part, which is provided below the filter material layer, is used for backwashing the filter material layer; a drainage part, which is connected with the bottom of the pool body, is used for collecting treated sewage and discharging the treated sewage; wherein the movable aeration group comprises: a plurality of aeration movable assemblies, each of which is provided above the filter material layer and is used for aerating the filter material layer; a support bracket, which is fixedly connected with the pool wall of the filter pool, is used for supporting the aeration movable assembly; a monitoring assembly, which is connected with each aeration movable assembly, comprises a position sensor, a dissolved oxygen sensor, and an image sensor; an adjusting assembly, which comprises a magnetic adsorption module provided at the bottom of the aeration movable assembly, is used for adsorbing and fixing the aeration movable assembly on the magnetic adsorption part to realize precise aeration; an energy supply assembly, which is connected with the aeration movable assembly, the monitoring assembly, and the adjusting assembly respectively, is used for supplying power to each assembly.

2. The multi-functional biological aerated filter for sewage treatment according to claim 1, characterized by The air inlet distribution group consists of a main air inlet pipe and a plurality of branch air inlet pipes, the main air inlet pipe is connected with an external air source and is used for introducing air into the filter pool; the branch air inlet pipes extend from the main air inlet pipe and are used for supplying air to the movable aeration group and the fixed aeration group.

3. The multi-functional biological aerated filter for sewage treatment according to claim 1, characterized by The aeration movable assembly comprises a movable aeration nozzle used for aerating the filter material layer and a rotating assembly used for adjusting the aeration direction of the movable aeration nozzle, wherein the movable aeration nozzle is connected with the branch air inlet pipe through the rotating assembly, and the rotating assembly comprises: a first driving motor, which is a power source of the rotating assembly, and an output shaft and a transmission module are connected; the transmission module, which is connected with the output shaft, is used for transmitting the rotary motion of the first driving motor to the movable aeration nozzle.

4. The multi-functional biological aerated filter for sewage treatment according to claim 3, characterized by The transmission module consists of a driving gear and a driven gear, the driving gear is connected with the output shaft of the first driving motor, the driven gear is fixedly connected with the movable aeration nozzle, and the driven gear cooperates with the driving gear.

5. The multi-functional biological aerated filter for sewage treatment according to claim 4, characterized by The rotating assembly is also provided with an angle sensor, which is used for monitoring the rotation angle of the movable aeration nozzle in real time to adjust the aeration direction.

6. The multi-functional biological aerated filter for sewage treatment according to claim 1, wherein The adjusting assembly further comprises: a plurality of micro thrusters, which are uniformly distributed around the aeration movable assembly, are used for providing power to the aeration movable assembly to move the aeration movable assembly, and the micro thrusters are designed in the form of propellers; a second driving motor, which is connected with the micro thrusters, is used for driving the propeller-type micro thrusters to rotate to realize the translational motion of the aeration movable assembly.

7. The multi-functional biological aerated filter for sewage treatment according to claim 1, characterized by The fixed aeration group comprises a branch air inlet pipe and a fixed aeration nozzle, wherein The branch air inlet pipes are uniformly distributed below the filter material layer, the fixed aeration nozzles are fixed through fixed supports, and the fixed supports are distributed in a grid shape or an array below the filter material layer.

8. The multi-functional biological aerated filter for sewage treatment according to claim 7, characterized by The movable aeration nozzles and the fixed aeration nozzles are uniformly provided with a plurality of air holes on surfaces thereof, for releasing gas in the form of micro-bubbles into sewage. The movable aeration nozzles and the fixed aeration nozzles are provided with filter membranes at the plurality of air holes on inner sides thereof, for preventing impurities in the sewage from entering the plurality of air holes.

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