Energy-saving microporous aerated biological tank system for photovoltaic wastewater treatment

Abstract

This utility model relates to the field of aerated biological tank technology and discloses an energy-saving microporous aerated biological tank system for photovoltaic wastewater treatment. The aeration component includes an air guide pipe connected to a support rod, an air supply pipe connected to the air guide pipe, and aeration pipes evenly distributed on the air guide pipe. Aerators are linearly arranged at the bottom of the aeration pipes. A swirl component is installed inside the aerator, and a spiral air guide component is installed outside the swirl component. Tangential holes are opened along the circumferential direction on the outer wall of the spiral air guide component, and each set of tangential holes is a conical channel inclined at 45°. Each set of conical channels has an elastic closed-cell diaphragm built in. The swirl component generates a swirling flow, which can first "shred" the 0.3MPa air, and then the gas is "fan-shaped" and scattered by the spiral air guide component. It can achieve higher oxygen transfer efficiency and lower operating costs with less electricity, fewer pipes, and a larger coverage area, resulting in good energy-saving effect.

Description

Technical Field

[0001] This utility model relates to the field of aerated biological tank technology, and in particular to an energy-saving microporous aerated biological tank system for photovoltaic wastewater treatment. Background Technology

[0002] Wastewater treatment refers to the process of treating wastewater to meet the requirements of a certain water body or making it reusable. In cities, people generate a large amount of wastewater from daily life and various industrial production. Aeration and oxygenation technology is often used in river water treatment. Aeration increases the concentration of dissolved oxygen. The traditional aeration disc installation method involves fixing the aeration elements to the bottom of the tank. When the bottom of the aeration tank malfunctions or needs maintenance or replacement, production needs to be stopped and drainage needs to be carried out, which affects drainage.

[0003] In a biological packing module with enhanced aeration coupling, application number CN202122923208.9, a microporous aeration hose is connected to both an aerator and an air source. The biological reaction packing and aeration components of this invention are located within an aeration tank. The microporous aeration hose is connected to both the aerator and the air source, allowing for sufficient contact between the wastewater and oxygen in the aeration tank. This provides oxygen for microbial degradation of organic matter and also serves to agitate the biological tank. The biological reaction packing and aeration components are mounted on a frame.

[0004] However, in actual use, if the height of the aeration disc is higher than the bottom of the tank after installation, a dissolved oxygen dead zone will be formed below the horizontal plane of the aeration disc, causing activated sludge and carrier to accumulate in the dead zone. This will reduce the degradation efficiency of organic matter by the aerobic biological unit. In addition, the aeration pipe holes are prone to clogging, the oxygen utilization rate will drop sharply, and if the aeration pipe spacing is large, blind spots will exist in the biological tank. Moreover, single-point aeration can easily lead to uneven distribution of dissolved oxygen, poor oxygen supply uniformity, and increased energy consumption.

[0005] Therefore, this utility model proposes an energy-saving microporous aeration biological tank system for photovoltaic wastewater treatment to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an energy-saving microporous aeration biological tank system for photovoltaic wastewater treatment, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving microporous aeration biological tank system for photovoltaic wastewater treatment, comprising an installation frame placed inside the biological tank, a hanging rope installed on the top of the installation frame, biological reaction packing material distributed inside the installation frame, and an aeration component fixedly installed at the bottom of the installation frame by a support rod;

[0008] The aeration assembly includes an air guide pipe connected to a support rod, an air supply pipe connected to the air guide pipe, aeration pipes evenly distributed on the air guide pipe, and aerators linearly arranged at the bottom of the aeration pipes.

[0009] The aerator is equipped with a swirl assembly inside, and a spiral air guide assembly is provided on the outside of the swirl assembly. Tangential holes are opened along the circumferential direction on the outer wall of the spiral air guide assembly, and each set of tangential holes is a conical channel inclined at 45°. Each set of conical channels has an elastic closed-cell membrane inside.

[0010] Preferably, the aerator includes a connector integrally formed with the aeration pipe, a guide cylinder is threadedly fitted below the connector, an isolation ring is fixedly disposed inside the guide cylinder, a swirling cavity is disposed inside the isolation ring, and a spiral drainage cavity is disposed between the isolation ring and the guide cylinder.

[0011] Preferably, the swirl assembly includes a central air tube that passes through the connector. The top end of the central air tube is connected to the aeration tube, and its bottom end extends to the inner and outer sides of the swirl chamber. A swirl cylinder is rotatably mounted on the bottom of the swirl chamber via a bearing.

[0012] Preferably, the swirl assembly further includes helical blades uniformly installed on the outer side wall of the swirl tube, and the outer side wall of the swirl tube is evenly distributed with air vents facing the helical blades, and each set of air vents is a conical hole inclined downward at 60°, and the air outlet of the conical hole faces the root of the helical blades.

[0013] Preferably, the isolation ring and the corresponding position of the spiral blade are uniformly provided with drainage holes along the circumferential direction, and the drainage holes are connected to the swirling cavity and the spiral drainage cavity. The swirling assembly also includes drainage holes.

[0014] Preferably, the gap between the outer edge of each set of spiral blades and the inner wall of the isolation ring is 0.3 mm, and the spiral blades are evenly arranged along the height of the cyclone tube.

[0015] Preferably, the spiral air guide assembly includes a guide cylinder and a tangential hole, and the top of the guide cylinder is integrally formed with a threaded ring that is threadedly connected to the connector.

[0016] Preferably, a spiral groove is formed on the inner wall of the guide cylinder, and the top end of the spiral groove corresponds to the tangential hole.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] In this invention, the swirl assembly rotates during aeration, generating a rotating airflow. This airflow cuts 0.3MPa air into microbubbles smaller than 0.5mm, facilitating full contact between oxygen and water and accelerating oxygen dissolution. The microbubbles are then guided into the spiral air guide assembly and finally discharged through tangential holes, guiding the sheared swirl bubbles to form a 120° fan-shaped cloud. This bubble cloud diffuses in a 120° fan shape, and the aeration pipes are arranged in an array, providing 100% coverage. This increases the oxygen dissolution rate in the biological tank and avoids dead zones. When the aeration pipes stop... When the air supply stops, the elastic closed-cell diaphragm rebounds, causing the tangential orifice to close. After the exhaust channel is closed, it can prevent water pressure backflow, thus preventing the tangential orifice from becoming blocked. Moreover, the vortex component generates a vortex under 0.3MPa air, shearing the bubbles to 0.5mm. The bubble surface is renewed quickly, and pollutants are not easy to deposit. The vortex component generates a vortex that can first "shred" the 0.3MPa air, and then the gas is "fan-shaped" by the spiral air guide component. It can achieve higher oxygen transfer efficiency and lower operating costs with less electricity, fewer pipes, and a larger coverage area, resulting in good energy saving. Attached Figure Description

[0019] Figure 1 This is a first-person view structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the aeration component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the assembly structure of the aeration pipe and aerator of this utility model;

[0023] Figure 5 This is a schematic diagram of the aerator structure of this utility model;

[0024] Figure 6 This is a first cross-sectional view of the aerator of this utility model;

[0025] Figure 7 This is a second cross-sectional view of the aerator of this utility model.

[0026] In the diagram: 1. Mounting frame; 2. Suspension rope; 3. Bioreactor packing material; 4. Aeration assembly; 5. Support rod; 6. Air guide pipe; 7. Air supply pipe; 8. Aeration pipe; 9. Aerator; 91. Connector; 92. Guide tube; 93. Screw ring; 94. Central air tube; 95. Isolation ring; 96. Swirl chamber; 97. Spiral drainage chamber; 98. Swirl cylinder; 99. Spiral blade; 910. Air blasting hole; 911. Drainage hole; 912. Spiral groove; 913. Tangential hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1 to 7 As shown, this embodiment discloses an energy-saving microporous aeration biological tank system for photovoltaic wastewater treatment, including an installation frame 1 placed in the biological tank, a hanging rope 2 installed on the top of the installation frame 1, biological reaction packing material 3 distributed inside the installation frame 1, and an aeration component 4 fixedly installed at the bottom of the installation frame 1 by a support rod 5. It also includes a winch, which uses the hanging rope 2 to place the installation frame 1 in the biological tank and can lift it up and down, making it easy to raise the installation frame 1 to the water surface without draining the tank water.

[0029] Please see Figures 1-3 The aeration component 4 includes an air guide pipe 6 connected to the support rod 5, an air supply pipe 7 connected to the air guide pipe 6, and aeration pipes 8 evenly distributed on the air guide pipe 6. Aerators 9 are linearly arranged at the bottom of the aeration pipes 8. The air supply pipe 7 and the air source are connected through a hose to realize gas input. Oxygen is input into the air guide pipe 6 through the air supply pipe 7, and then transferred from the aeration pipes 8 to the aerators 9 to realize oxygen supply and promote oxygen dissolution into the biological tank.

[0030] Please see Figures 4-7 The aerator 9 is equipped with a swirl assembly inside, and a spiral air guide assembly is installed on the outside of the swirl assembly. Tangential holes 913 are formed along the circumferential direction on the outer wall of the spiral air guide assembly, and each set of tangential holes 913 is a conical channel inclined at 45°. Each conical channel contains an elastic closed-cell diaphragm. When the swirl assembly is in operation, the airflow causes it to rotate, generating a high-speed rotating airflow. This airflow cuts 0.3MPa air into microbubbles smaller than 0.5mm, facilitating sufficient contact between oxygen and the water, accelerating oxygen dissolution. Furthermore, the microbubbles are introduced into the spiral air guide assembly and finally... The air is discharged through orifice 913, guiding the sheared swirling bubbles to the surrounding area, forming a 120° fan-shaped cloud. The bubble cloud spreads in a 120° fan shape, and the aeration pipes 8 are arranged in an array, with a 100% coverage rate, which increases the amount of oxygen dissolved in the biological tank and avoids dead zones. When the aeration pipes 8 stop supplying air, the elastic closed-pore membrane rebounds, causing the tangential orifice 913 to close. After the exhaust channel is closed, it can prevent water pressure backflow, thus preventing the tangential orifice 913 from becoming blocked. Moreover, the swirling component generates a high-speed swirling flow under 0.3MPa air, shearing the bubbles to 0.5mm. The bubble surface is renewed quickly, and pollutants are not easy to deposit.

[0031] Please see Figures 4-7 The aerator 9 includes a connector 91 integrally formed with the aeration pipe 8. A guide cylinder 92 is threadedly fitted below the connector 91. An isolation ring 95 is fixedly installed inside the guide cylinder 92. A swirl chamber 96 is set inside the isolation ring 95. A spiral guide chamber 97 is set between the isolation ring 95 and the guide cylinder 92. A threaded ring 93 is integrally formed at the top of the guide cylinder 92 and threadedly connected to the connector 91. The guide cylinder 92 is threadedly connected to the connector 91 through the threaded ring 93, which improves the connection convenience of the guide cylinder 92 and facilitates later maintenance and replacement. The isolation ring 95 can ensure the independence of gas flow in the swirl chamber 96 and the spiral guide chamber 97 and prevent mutual interference.

[0032] Please see Figures 4-7 The swirling assembly includes a central air pipe 94 that passes through the connector 91. The top end of the central air pipe 94 is connected to the aeration pipe 8, and its bottom end extends to the inner and outer sides of the swirling chamber 96. A swirling cylinder 98 is rotatably mounted on the inner and outer sides of the swirling chamber 96 via bearings. The bottom end of the swirling cylinder 98 is rotatably mounted on the bottom of the swirling chamber 96 via bearings. The swirling assembly also includes spiral blades 99 that are evenly installed on the outer side wall of the swirling cylinder 98. Air blasting holes 910 that are directly opposite the spiral blades 99 are evenly distributed on the outer side wall of the swirling cylinder 98. Each set of air blasting holes 910 is a conical hole that is inclined downward at 60°, and the outlet of the conical hole is directly opposite the root of the spiral blades 99. The gap between the outer edge of each set of spiral blades 99 and the inner wall of the isolation ring 95 is 0.3mm, and the spiral blades 99 are evenly arranged along the height of the swirl tube 98. The isolation ring 95 and the corresponding position of the spiral blades 99 are evenly provided with flow guide holes 911 along the circumferential direction, and the flow guide holes 911 connect the swirl chamber 96 and the spiral flow guide chamber 97. The swirl assembly also includes flow guide holes 911. The spiral air guide assembly includes a guide tube 92 and a tangential hole 913. The inner wall of the guide tube 92 is provided with a spiral groove 912, and the top of the spiral groove 912 corresponds to the tangential hole 913.

[0033] In actual use, when gas is introduced from the aeration pipe 8 into the central air pipe 94, the gas is directly introduced into the interior of the vortex tube 98. Then, the internal body of the tube blows the gas through the air blasting hole 910 onto the spiral blades 99. The high-speed airflow pushes the spiral blades 99 to rotate, which in turn drives the vortex tube 98 to rotate, causing multiple sets of spiral blades 99 to rotate synchronously and accelerating the rapid rotation of the spiral blades 99. The rotating spiral blades 99 can shear the gas vortex, causing the gas to form a vortex. Moreover, the spiral blades 99 break the airflow into uniform particle size, avoiding the "large bubble short circuit" phenomenon caused by the difference in pore size in traditional microporous plates. After the gas shearing is completed, the bubbles are introduced into the spiral drainage cavity 97 through the drainage hole 911, causing the bubble size to decrease from 2-3 mm to 0.3-0.5 mm, increasing the specific surface area by 4-6 times. At the same time, the microbubble rises slowly, increasing the dissolution time of oxygen in the water and significantly improving the oxygen utilization rate.

[0034] After air bubbles are introduced into the spiral drainage chamber 97, the spiral grooves 912 inside convert the axial upward airflow into a high-speed rotating airflow. The end of each spiral groove 912 corresponds to the tangential hole 913, which can cause the airflow to be ejected at a tangential velocity of 15m / s. According to the conservation of angular momentum, the air bubbles diffuse in a 120° fan shape after leaving the orifice, covering a radius of 0.4-0.6m. A large number of 0.3-0.5mm microbubbles are distributed in a "flat fan" shape under the action of tangential momentum, making full contact with the water. The fan-shaped diffusion angle is 120°, and the array spacing can be enlarged to 200mm without blind spots. Traditional disc aeration structures require a spacing of 100mm, and the amount of pipe material used is halved, reducing costs. Moreover, the microbubbles have low kinetic energy, do not damage the sludge flocs, and maintain settling performance. Compared with traditional jet aeration, SVI is reduced by 10-15%.

[0035] In summary, the swirling component generates a swirling flow that can first "shred" the 0.3MPa air, and then the spiral air guide component "fan-shaped" the gas. It can achieve higher oxygen transfer efficiency and lower operating costs with less electricity, fewer pipes, and a larger coverage area, resulting in good energy-saving performance.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Energy saving type microporous aeration biological tank system for photovoltaic wastewater treatment, characterized by: The installation includes an installation frame (1) placed in a biological tank, a hanging rope (2) installed on the top of the installation frame (1), biological reaction packing material (3) distributed inside the installation frame (1), and an aeration component (4) fixedly installed at the bottom of the installation frame (1) by a support rod (5). The aeration assembly (4) includes an air guide pipe (6) connected to a support rod (5), an air supply pipe (7) connected to the air guide pipe (6), and aeration pipes (8) evenly distributed on the air guide pipe (6). Aerators (9) are linearly arranged at the bottom of the aeration pipes (8). The aerator (9) is provided with a swirl assembly inside, and a spiral air guide assembly is provided on the outside of the swirl assembly. A tangential hole (913) is provided on the outer wall of the spiral air guide assembly along the circumferential direction. Each set of tangential holes (913) is a conical channel inclined at 45°, and each set of conical channels has an elastic closed-cell diaphragm inside.

2. The photovoltaic energy saving type microporous biological aeration tank system for wastewater treatment according to claim 1, characterized in that: The aerator (9) includes a connector (91) integrally formed with the aeration pipe (8). A guide cylinder (92) is threadedly fitted below the connector (91). An isolation ring (95) is fixedly installed inside the guide cylinder (92). A swirl chamber (96) is set inside the isolation ring (95). A spiral drainage chamber (97) is set between the isolation ring (95) and the guide cylinder (92).

3. The energy-saving microporous aerated biological tank system for photovoltaic wastewater treatment according to claim 2, characterized in that: The swirling assembly includes a central air tube (94) that passes through the connector (91). The top end of the central air tube (94) is connected to the aeration tube (8), and its bottom end extends to the inner and outer sides of the swirling chamber (96). A swirling cylinder (98) is rotatably mounted on the bottom of the swirling chamber (96) via a bearing. The bottom end of the swirling cylinder (98) is rotatably mounted on the bottom of the swirling chamber (96) via a bearing.

4. The energy-saving microporous aerated biological tank system for photovoltaic wastewater treatment according to claim 3, characterized in that: The swirl assembly also includes spiral blades (99) uniformly installed on the outer side wall of the swirl tube (98), and the outer side wall of the swirl tube (98) is evenly distributed with air vents (910) facing the spiral blades (99), and each set of air vents (910) is a conical hole inclined downward at 60°, and the air outlet of the conical hole faces the root of the spiral blades (99).

5. The energy-saving microporous aerated biological tank system for photovoltaic wastewater treatment according to claim 4, characterized in that: The isolation ring (95) and the corresponding position of the spiral blade (99) are provided with drainage holes (911) evenly along the circumferential direction, and the drainage holes (911) are connected to the swirling cavity (96) and the spiral drainage cavity (97). The swirling assembly also includes drainage holes (911).

6. The energy-saving microporous aerated biological tank system for photovoltaic wastewater treatment according to claim 5, characterized in that: The gap between the outer edge of each set of spiral blades (99) and the inner wall of the isolation ring (95) is 0.3 mm, and the spiral blades (99) are evenly arranged along the height of the vortex tube (98).

7. The energy-saving microporous aerated biological tank system for photovoltaic wastewater treatment according to claim 5, characterized in that: The spiral air guide assembly includes a guide tube (92) and a tangential hole (913). The top of the guide tube (92) is integrally formed with a threaded ring (93) that is threadedly connected to the connector (91).

8. The energy-saving microporous aerated biological tank system for photovoltaic wastewater treatment according to claim 7, characterized in that: The inner wall of the guide cylinder (92) is provided with a spiral groove (912), and the top end of the spiral groove (912) corresponds to the tangential hole (913).

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