CN216918748U - Aeration system for sewage treatment - Google Patents
Aeration system for sewage treatment Download PDFInfo
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- CN216918748U CN216918748U CN202220138541.0U CN202220138541U CN216918748U CN 216918748 U CN216918748 U CN 216918748U CN 202220138541 U CN202220138541 U CN 202220138541U CN 216918748 U CN216918748 U CN 216918748U
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- pipe
- variable frequency
- air
- dissolved oxygen
- control valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model relates to an aeration system for sewage treatment, which comprises a variable frequency fan, an air distribution device, an oxygen dissolving instrument and a controller, wherein the outlet of the variable frequency fan is connected with an air main pipe; the air main pipe is connected with a plurality of air distribution devices, and each air distribution device is provided with a control valve group; the gas distribution device is provided with a plurality of outlet branch pipes, and each outlet branch pipe is connected with an aerator; the controller is respectively connected with the variable frequency fan, the control valve group and the dissolved oxygen instrument, the dissolved oxygen instrument is used for detecting and monitoring dissolved oxygen in water, and the controller adjusts the opening of the control valve group or the frequency of the variable frequency fan according to the detected dissolved oxygen. The utility model can ensure the aeration effect and reduce the energy consumption at the same time.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to an aeration system for sewage treatment.
Background
With the development of modern society and the continuous improvement of economic level, human beings can produce a large amount of waste water in work and life, for example, the direct discharge of waste water can directly influence the natural environment, so the waste water that produces needs to be treated. In a sewage treatment system, the treatment of wastewater by microorganisms is the most economical and has the advantage of excellent effluent quality, so the method has wide application.
The sewage is treated by microorganisms in several stages, including pretreatment, biochemical treatment and advanced treatment; the biochemical treatment is divided into an anaerobic tank, an anoxic tank, an aerobic tank and the like, wherein the aerobic tank needs a large amount of oxygen to maintain the dissolved oxygen of the sewage in the tank, so that the effects of ensuring the growth and the propagation of microorganisms in the tank and ensuring the standard of sewage treatment are achieved.
Wherein, the number of the aerobic tanks in the sewage treatment system is generally more than two, wherein, the aeration requires a plurality of fans to provide enough oxygen. In order to ensure the dissolved oxygen in the pool, the energy consumption of the existing aeration system is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an aeration system for sewage treatment, which can ensure the aeration effect and reduce the energy consumption.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the aeration system for sewage treatment comprises a variable frequency fan, an air distribution device, an oxygen dissolving instrument and a controller, wherein an outlet of the variable frequency fan is connected with an air main pipe; the air main pipe is connected with a plurality of air distribution devices, and each air distribution device is provided with a control valve group; the gas distribution device is provided with a plurality of outlet branch pipes, and each outlet branch pipe is connected with an aerator; the controller is respectively connected with the variable frequency fan, the control valve group and the dissolved oxygen instrument, the dissolved oxygen instrument is used for detecting and monitoring dissolved oxygen in water, and the controller adjusts the opening of the control valve group or the frequency of the variable frequency fan according to the detected dissolved oxygen.
The outlet of the variable frequency fan is connected with the air main pipe through an elastic soft joint, and the part of the air main pipe close to the variable frequency fan is sequentially provided with a check valve, a manual valve and a pressure transmitter.
The air main pipe is a carbon steel pipe subjected to antiseptic treatment.
The air distribution device is connected with the air main pipe through an air branch pipe, and the control valve group is configured on the air branch pipe; the control valve group comprises two manual butterfly valves and an electric valve, and the electric valve is located between the two manual butterfly valves and connected with the controller.
And two ends of the control valve group are also connected with bypass branch pipes in parallel, and the bypass branch pipes are provided with bypass manual valves.
The diameters of the outlet branch pipes are different, the outlet branch pipes are connected with the aerator through screw threads, and the joints of the screw threads are sealed through thread seal tapes.
And manual ball valves are arranged on the outlet branch pipes.
Advantageous effects
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following advantages and positive effects: according to the utility model, the control valve group is arranged between the gas distribution device and the main pipeline of the fan outlet, and the opening of the control valve group is adjusted by monitoring the dissolved oxygen in each area in real time, so that the purposes of ensuring the stable operation of the system and the standard discharge of the outlet water are achieved, and the energy consumption of the system is reduced. In addition, the utility model provides the air quantity to each pipe/disc type aerator connected with the outlet branch pipes uniformly through each outlet branch pipe, thereby avoiding the defects of multiple times of hole opening and multiple welding on the aeration main pipe.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural view of a gas distribution device according to an embodiment of the present invention.
Detailed Description
The utility model will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
An embodiment of the present invention relates to an aeration system for sewage treatment, as shown in fig. 1, which includes: frequency conversion fan 1, divide gas device 7, dissolved oxygen appearance 11 and controller.
In the embodiment, the variable frequency fan 1 is installed between equipment, the foundation can be made of concrete or a steel frame and the like, is fixed on the ground by using embedded bolts or expansion screws and screws, and one or more layers of rubber pads are added between the variable frequency fan 1 and the foundation, so that the fan is prevented from being damaged by vibration generated in the operation process of the variable frequency fan 1.
The frequency conversion fans 1 in the embodiment are two in total and are installed in parallel, the outlets of the two frequency conversion fans 1 are connected into the air main pipe, and the air main pipe can adopt a carbon steel pipe subjected to anti-corrosion treatment.
The flexible joint 2 is installed to the export of frequency conversion fan 1 in this embodiment, and the air main pipe is provided with check valve 3, manual butterfly valve 4 and pressure transmitter 5 near the part of frequency conversion fan.
In the embodiment, a plurality of or a plurality of groups of gas distribution devices 7 connected in parallel are adopted, and the gas distribution devices 7 are arranged in the tank to provide enough dissolved oxygen for sewage in the tank. The gas distribution device 7 can be made of PE material, and is installed in a water body because the PE material needs to be installed in a dark place. Divide 7 one end of gas device to be connected with the air branch pipe through the flange, this air branch pipe links to each other with the air main pipe, and the air branch pipe still is provided with the bypass branch pipe, has two manual butterfly valves 12 and an electric valve 6 on the air branch pipe, and electric valve 6 is located between two manual butterfly valves 12, is equipped with bypass manual valve 13 on the bypass branch pipe. When the air purifier operates normally, air enters the air branch pipe from the air main pipe, the manual butterfly valve 12 is opened, the bypass manual valve 13 is closed, and the air quantity entering the air distribution device 7 is adjusted by the opening degree of the electric valve 6; if the electric valve 6 is in fault, the manual butterfly valve 12 on the air branch is closed, the bypass manual valve 13 is opened, normal air supply is guaranteed, and the electric valve 6 is convenient to maintain. In order to avoid gas leakage, the other side of the gas distribution device 7 in the embodiment is plugged by a PE plug 9, and the connection mode can be hot-melt butt joint or hot-melt socket connection.
As shown in fig. 2, the air distributor 7 of the present embodiment may have different numbers of outlet branch pipes 14 with different diameters according to the requirements. The outlet branch pipe 14 is provided with inner threads, the outlet branch pipe 14 is connected with each aerator through threads, and in order to ensure air tightness, the connection part of the thread connection needs sealing through a raw material belt. Each outlet branch pipe 14 is provided with a manual ball valve 10, the manual ball valves 10 are installed in a hot melting insertion mode, and then an aerator is connected, in the embodiment, the aerator adopts a pipe/disc type aerator 8, when a single pipe/disc type aerator 8 fails, the corresponding manual ball valve 10 can be closed, and the failed pipe/disc type aerator 8 can be overhauled or replaced. The utility model provides air quantity to each pipe/disc type aerator connected with the outlet branch pipes uniformly through each outlet branch pipe, thereby avoiding the defects of repeated hole opening and multiple welding on the main aeration pipe.
The dissolved oxygen meter 11 in the present embodiment is used to monitor dissolved oxygen in water, and one or a plurality of dissolved oxygen meters 11 may be arranged in different regions. When the dissolved oxygen in the area is lower than a set value, the opening degree of the electric valve 6 is increased, the aeration quantity is increased, and the purpose of increasing the dissolved oxygen is achieved; if the opening of the electric valve 6 is adjusted to be maximum, increasing the frequency of the variable frequency fan 1 or opening the two variable frequency fans 1; if the dissolved oxygen is higher than the set value, the opening degree of the electric valve 6 is reduced or the frequency of the variable frequency fan 1 is reduced. The gas distribution device 7 and the aerator in the embodiment are arranged in the aerobic tank, and the frequency of the electric valve 6 or the frequency conversion fan 1 is adjusted in real time through the accurate measurement of the dissolved oxygen in the tank by the dissolved oxygen meter 11, so that the energy consumption of the system can be reduced, the aeration efficiency of the aerobic tank in the sewage treatment system is improved, the sewage treatment efficiency is improved, and the effluent quality is ensured to reach the standard.
The pressure transmitter 5 in this embodiment is used for monitoring the air pressure in the main pipe, and if the pressure in the pipe is higher than a set value, the frequency conversion fan 1 reduces the frequency or starts a safety valve of the fan 1 to release the pressure, so as to ensure the safety of the pipeline.
Claims (7)
1. An aeration system for sewage treatment is characterized by comprising a variable frequency fan, an air distribution device, an oxygen dissolving instrument and a controller, wherein the outlet of the variable frequency fan is connected with an air main pipe; the air main pipe is connected with a plurality of air distribution devices, and each air distribution device is provided with a control valve group; the gas distribution device is provided with a plurality of outlet branch pipes, and each outlet branch pipe is connected with an aerator; the controller is respectively connected with the variable frequency fan, the control valve group and the dissolved oxygen instrument, the dissolved oxygen instrument is used for detecting and monitoring dissolved oxygen in water, and the controller adjusts the opening of the control valve group or the frequency of the variable frequency fan according to the detected dissolved oxygen.
2. An aeration system for sewage treatment according to claim 1, wherein the outlet of the variable frequency fan is connected with the main air pipe through a flexible joint, and the part of the main air pipe close to the variable frequency fan is provided with a check valve, a manual valve and a pressure transmitter in sequence.
3. An aeration system for wastewater treatment according to claim 1, wherein said main air pipe is a carbon steel pipe subjected to corrosion protection treatment.
4. An aeration system for wastewater treatment according to claim 1, wherein said gas-distributing device is connected to said main air pipe via a branch air pipe, said branch air pipe being provided with said control valve block; the control valve group comprises two manual butterfly valves and an electric valve, and the electric valve is located between the two manual butterfly valves and connected with the controller.
5. An aeration system for sewage treatment according to claim 4, wherein both ends of the control valve set are further connected in parallel with a bypass branch pipe, and a bypass manual valve is arranged on the bypass branch pipe.
6. An aeration system for wastewater treatment according to claim 1, wherein said outlet legs have different diameters, and are screwed to said aerator, and the screw joints are sealed with thread tape.
7. An aeration system for wastewater treatment according to claim 1, wherein a manual ball valve is provided to each of the plurality of outlet branch pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220138541.0U CN216918748U (en) | 2022-01-19 | 2022-01-19 | Aeration system for sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220138541.0U CN216918748U (en) | 2022-01-19 | 2022-01-19 | Aeration system for sewage treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216918748U true CN216918748U (en) | 2022-07-08 |
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ID=82263198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220138541.0U Active CN216918748U (en) | 2022-01-19 | 2022-01-19 | Aeration system for sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216918748U (en) |
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2022
- 2022-01-19 CN CN202220138541.0U patent/CN216918748U/en active Active
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