Sewage treatment device based on super-nano gas-dissolved rice reoxygenation

Abstract

The utility model provides a sewage treatment device based on super-nano gas dissolved rice reoxygenation. The sewage treatment device comprises a water inlet pipe, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR (Membrane Bioreactor) tank and a clean water tank which are sequentially communicated, the MBR tank comprises an MBR membrane group, the MBR membrane group is communicated with the clean water tank through an MBR suction pump, and the MBR membrane group is communicated with an MBR fan through a pipeline; and the MBR tank is communicated with the ultra-nano gas dissolution and reoxygenation device. According to the sewage treatment device based on super-nano gas dissolved rice reoxygenation, provided by the utility model, the sewage treatment efficiency is improved, the dissolved oxygen concentration is accurately controlled and the intelligent management of sewage treatment is realized through the super-nano gas dissolved rice reoxygenation device and the sensor monitoring and PLC control system.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device based on ultra-nanogas dissolved rice reoxygenation. Background Art

[0002] Conventional MBR sewage treatment devices use air aeration to aerate the water in each pool and change the dissolved oxygen in the water. They cannot increase the dissolved oxygen limit in the MBR pool, nor can they accurately control the dissolved oxygen concentration in each pool. They cannot increase the MLSS concentration, have limited water inlet load, and have weak impact resistance.

[0003] In conventional MBR (membrane bioreactor) sewage treatment plants, air aeration is usually used to aerate the water in each treatment tank in order to change the dissolved oxygen (DO) concentration of the water. Although this method can provide dissolved oxygen to a certain extent, it has several obvious limitations: due to the limitation of its aeration efficiency, the traditional air aeration method often cannot significantly increase the dissolved oxygen concentration in the MBR tank to a higher level. This is an important limiting factor for sewage treatment processes that require high dissolved oxygen concentrations to promote biodegradation and sludge activity. It is difficult to accurately control the dissolved oxygen concentration in each tank by air aeration, resulting in unstable sewage treatment effects. Different sewage treatment stages have different requirements for dissolved oxygen, and traditional methods cannot be fine-tuned according to actual needs. MLSS (mixed liquor suspended solids concentration) is an important indicator for measuring the treatment effect of activated sludge. Due to insufficient dissolved oxygen supply, the concentration and activity of activated sludge are limited, which affects the overall effect and efficiency of sewage treatment. Due to the above limitations of the air aeration method, the influent load and shock resistance of the treatment system of conventional MBR devices are relatively weak. This may lead to a decrease in treatment effect or even system failure when facing sewage with large fluctuations in water quality or high organic load. Air aeration may produce a large amount of foam, which not only affects the surrounding environment, but may also interfere with the normal operation of the sewage treatment system.

[0004] Therefore, in order to overcome these problems, it is necessary to design an improved sewage treatment device based on super-nanoaerosol reoxygenation to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a sewage treatment device based on ultra-nano gas dissolved rice reoxygenation. By designing an ultra-nano reoxygenation device, there is no aeration, precise oxygen control, and the dissolved oxygen in the MBR pool is increased, the treatment efficiency is enhanced, the sludge is reduced, and the water quality is improved.

[0006] To achieve the above-mentioned purpose of the utility model, the utility model provides a sewage treatment device based on ultra-nano aerosol reoxygenation, comprising an inlet pipe, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR tank, and a clean water tank connected in sequence; the MBR tank comprises an MBR membrane group, the MBR membrane group is connected to the clean water tank through an MBR suction pump, and the MBR membrane group is connected to the MBR fan through a pipeline; the MBR tank is connected to the ultra-nano aerosol reoxygenation device.

[0007] As a further improvement of the utility model, it also includes a PLC control system and a liquid level sensor, a dissolved oxygen sensor, a flow pusher, and a reflux pump that are signal-connected to the PLC control system; the ultra-nano aerosol reoxygenation device is electrically connected to the PLC control system.

[0008] As a further improvement of the present invention, the liquid level sensor includes a first liquid level sensor arranged in the anaerobic tank, a second liquid level sensor arranged in the anoxic tank, a third liquid level sensor arranged in the aerobic tank and a fourth liquid level sensor arranged in the MBR tank.

[0009] As a further improvement of the present invention, the dissolved oxygen sensor includes a first dissolved oxygen sensor arranged in the anaerobic tank, a second dissolved oxygen sensor arranged in the anoxic tank, a third dissolved oxygen sensor arranged in the aerobic tank, and a fourth dissolved oxygen sensor arranged in the MBR tank.

[0010] As a further improvement of the present invention, the flowmaker includes a first flowmaker arranged in the anaerobic tank, a second flowmaker arranged in the anoxic tank, a third flowmaker arranged in the aerobic tank, and a fourth flowmaker arranged in the MBR tank.

[0011] As a further improvement of the present utility model, a third water outlet is provided on the side wall between the anoxic tank and the anaerobic tank, a first water outlet is provided on the side wall between the anoxic tank and the aerobic tank, the anoxic tank is connected with the anaerobic tank through the third water outlet, and the anoxic tank is connected with the aerobic tank through the first water outlet.

[0012] As a further improvement of the present invention, a second water outlet is provided on the side wall between the aerobic pool and the MBR pool, and the aerobic pool is connected with the MBR pool through the second water outlet.

[0013] As a further improvement of the utility model, the water outlet of the ultra-nano aerosol reoxygenation device is connected to the MBR tank through a first pipeline, a first electric valve is provided on the first pipeline, and the first electric valve is connected to the PLC control system through a signal.

[0014] As a further improvement of the utility model, the water outlet of the ultra-nano aerosol reoxygenation device is connected to the aerobic tank through a second pipe, a second electric valve is provided on the second pipe, and the second electric valve is connected to the PLC control system through a signal.

[0015] As a further improvement of the present invention, the reflux pump includes a first reflux pump, a second reflux pump and a third reflux pump. The MBR tank is connected to the aerobic tank through the third reflux pump, the aerobic tank is connected to the anoxic tank through the second reflux pump, and the anoxic tank is connected to the anaerobic tank through the first reflux pump.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model provides a sewage treatment device based on ultra-nano aerosol reoxygenation. By setting an ultra-nano aerosol reoxygenation device, oxygen-enriched water supply without air aeration is achieved, VOC emissions are reduced, no foam is generated, and dissolved oxygen control accuracy is improved. This device can effectively increase the dissolved oxygen concentration in water, provide sufficient oxygen for aquatic organisms, while reducing VOC emissions in the atmosphere, avoiding the generation of foam, and improving the stability and reliability of water treatment.

[0018] 2. The utility model provides a sewage treatment device based on ultra-nanogas dissolved rice reoxygenation, which realizes real-time monitoring and adjustment and optimizes the sewage treatment effect by setting a liquid level sensor, a dissolved oxygen sensor and a flow pusher in each treatment pool, and connecting the PLC system through a signal. The setting of these devices enables the sewage treatment process to be accurately controlled, ensuring that the water quality indicators of each treatment pool are effectively monitored and adjusted, thereby improving the sewage treatment effect.

[0019] 3. The utility model provides a sewage treatment device based on ultra-nanogas dissolved rice reoxygenation, which increases the dissolved oxygen concentration, enhances the biological treatment effect, reduces the sludge production, and improves the effluent water quality by setting an MBR membrane group, an MBR suction pump, and an MBR fan in the MBR pool. The MBR membrane group can effectively filter the sewage, and at the same time, through the cooperation of the MBR suction pump and the MBR fan, the dissolved oxygen concentration in the MBR pool is increased, thereby enhancing the biological treatment effect, reducing the sludge production, and improving the quality of the effluent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a sewage treatment device based on ultra-nanogas dissolution and reoxygenation provided by the utility model.

[0021] Reference numerals

[0022] 1-water inlet pipe; 2-anaerobic tank; 31-first dissolved oxygen sensor; 32-first liquid level sensor; 4-anoxic tank; 51-second dissolved oxygen sensor; 52-second liquid level sensor; 6-first water outlet; 7-aerobic tank; 81-third dissolved oxygen sensor; 82-third liquid level sensor; 9-second water outlet; 101-fourth dissolved oxygen sensor; 102-fourth liquid level sensor; 11-MBR tank; 12-MBR fan; 13-MBR Membrane group; 14-MBR suction pump; 15-clean water tank; 16-clear water tank outlet; 17-first flowmaker; 18-first reflux pump; 19-second flowmaker; 20-second reflux pump; 21-third flowmaker; 22-third reflux pump; 23-fourth flowmaker; 24-ultra-nano aerosol reoxygenation device; 25-water intake pump; 26-oxygen source; 27-PLC control system; 28-third water outlet; 29-first electric valve; 30-second electric valve. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0025] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0026] See also Figure 1The utility model provides a sewage treatment device based on ultra-nano gas-dissolving and reoxygenating, comprising an inlet pipe, an anaerobic tank 2, an anoxic tank 4, an aerobic tank 7, an MBR tank 11, and a clean water tank 15 connected in sequence; the MBR tank 11 comprises an MBR membrane group 13, the MBR membrane group 13 is connected to the clean water tank 15 through an MBR suction pump 14, and the MBR membrane group 13 is connected to the MBR fan 12 through a pipeline; the MBR tank 11 is connected to an ultra-nano gas-dissolving and reoxygenating device 24. The sewage treatment device based on ultra-nano gas-dissolving and reoxygenating also comprises a PLC control system 27 and a liquid level sensor, a dissolved oxygen sensor, a flow pusher, and a reflux pump connected to the PLC control system 27 by signal; the ultra-nano gas-dissolving and reoxygenating device 24 is electrically connected to the PLC control system 27. The clean water tank 15 is provided with a clean water tank outlet 16, and the clean water tank outlet 16 is used to discharge the purified water.

[0027] The liquid level sensor includes a first liquid level sensor 32 disposed in the anaerobic tank 2, a second liquid level sensor 52 disposed in the anoxic tank 4, a third liquid level sensor 82 disposed in the aerobic tank 7, and a fourth liquid level sensor 102 disposed in the MBR tank 11. Such a configuration enables real-time monitoring of the liquid level height of each treatment tank to ensure the stable operation of the sewage treatment system. The data collected by these sensors are analyzed and processed by the PLC control system 27 to adjust the liquid level of each tank body according to actual needs, optimize the sewage treatment process, prevent overflow or low water level, and improve the automation level and operation efficiency of the system.

[0028] The dissolved oxygen sensor includes a first dissolved oxygen sensor 31 disposed in the anaerobic tank 2, a second dissolved oxygen sensor 51 disposed in the anoxic tank 4, a third dissolved oxygen sensor 81 disposed in the aerobic tank 7, and a fourth dissolved oxygen sensor 101 disposed in the MBR tank 11. Such a configuration enables real-time monitoring and precise control of the dissolved oxygen concentration in each treatment tank. The data collected by these sensors are analyzed and processed by the PLC control system 27, so that the air intake flow of the oxygen source 26 and the opening of the electric valve are adjusted according to the demand for dissolved oxygen in different treatment stages to stabilize the dissolved oxygen concentration in the aerobic tank 7 and the MBR tank 11, thereby improving the operating efficiency.

[0029] The flow generator includes a first flow generator 17 disposed in the anaerobic tank 2, a second flow generator 19 disposed in the anoxic tank 4, a third flow generator 21 disposed in the aerobic tank 7, and a fourth flow generator 23 disposed in the MBR tank 11. Such a configuration can effectively promote uniform mixing of water bodies in each treatment tank, prevent the deposition of suspended solids, improve the uniformity of the distribution of dissolved oxygen, enhance the contact between microorganisms and pollutants, and thus improve the biodegradation efficiency.

[0030] A third water outlet 28 is provided on the side wall between the anoxic pool 4 and the anaerobic pool 2, and a first water outlet 6 is provided on the side wall between the anoxic pool 4 and the aerobic pool 7. The anoxic pool 4 is connected to the anaerobic pool 2 through the third water outlet 28, and the anoxic pool 4 is connected to the aerobic pool 7 through the first water outlet 6. Such an arrangement can ensure the orderly flow of the water body and the effective separation of different treatment stages, ensure the hydrodynamic conditions in the anoxic pool 4, and promote the separation of mud and water and the removal of nutrients.

[0031] A second water inlet 9 is provided on the side wall between the aerobic pool 7 and the MBR pool 11, and the aerobic pool 7 is connected to the MBR pool 11 through the second water inlet 9. Such a configuration can achieve an effective connection between the aerobic pool 7 and the MBR pool 11, ensuring that the water body treated aerobically flows smoothly into the MBR pool 11 for further treatment and filtration.

[0032] The water outlet of the ultra-nano aerosol reoxygenation device 24 is connected to the MBR pool 11 through a first pipe, and a first electric valve 29 is provided on the first pipe, and the first electric valve 29 is connected to the PLC control system 27 through a signal. The water outlet of the ultra-nano aerosol reoxygenation device 24 is connected to the aerobic pool 7 through a second pipe, and a second electric valve 30 is provided on the second pipe, and the second electric valve 30 is connected to the PLC control system 27 through a signal. With such a setting, the flow rate and timing of the ultra-nano aerosol reoxygenation device 24 supplying water to the MBR pool 11 and the aerobic pool 7 can be accurately controlled. The setting of the first electric valve 29 and the second electric valve 30 can automatically adjust the water supply, optimize the reoxygenation efficiency, and ensure the stability of the dissolved oxygen concentration in each pool body and the consistency of the treatment effect.

[0033] The reflux pump includes a first reflux pump 18, a second reflux pump 20 and a third reflux pump 22. The MBR pool 11 is connected to the aerobic pool 7 through the third reflux pump 22, the aerobic pool 7 is connected to the anoxic pool 4 through the second reflux pump, and the anoxic pool 4 is connected to the anaerobic pool 2 through the first reflux pump. With such arrangement, the dissolved oxygen concentration in the aerobic tank 7 can be regulated by adjusting the size of the reflux by the third reflux pump 22, the dissolved oxygen concentration in the anoxic tank 4 can be regulated by adjusting the size of the reflux by the second reflux pump 20, and the dissolved oxygen concentration in the anaerobic tank 2 can be regulated by adjusting the size of the reflux by the first reflux pump 18. The oxygen-rich water produced by the ultra-nano aerosol reoxygenation used in this process is used to provide each tank with different concentrations of dissolved oxygen. Air aeration is not used during operation, which can reduce the impact of VOC on the environment, and no foam is generated, thus avoiding the impact of foam on the system. The dissolved oxygen concentration in each water tank can be accurately controlled, and the dissolved oxygen concentration in the MBR tank 11 can reach above 6 mg / L, with a higher water inlet load and strong impact resistance, and can reduce the output of residual sludge, reduce the area occupied by the reaction tank and improve the effluent water quality indicators.

[0034] The principle of the present invention is further described below in conjunction with specific embodiments:

[0035] The sewage enters the anaerobic tank 2, the anoxic tank 4, the aerobic tank 7, and the MBR tank 11 in sequence through the water inlet pipe, and the purified water is pumped to the clean water tank 15 through the MBR suction pump 14, and discharged through the clean water tank outlet 16. The first flowmaker 17, the second flowmaker 19, the third flowmaker 21, and the fourth flowmaker 23 respectively arranged in the anaerobic tank 2, the anoxic tank 4, the aerobic tank 7, and the MBR tank 11 are used to stir the water in each tank evenly to prevent sediment deposition. The MBR fan 12 passes a certain amount of air into the MBR membrane group 13 to slow down the clogging speed of the MBR membrane group 13.

[0036] In this process, the water of the MBR pool 11 is sent to the ultra-nano aerosol reoxygenation device 24 through the water intake pump 25, and the oxygen-rich water produced by the ultra-nano aerosol reoxygenation device 24 flows to the MBR pool 11 and the aerobic pool 7 through the adjustable first electric valve 29 and the second electric valve 30 respectively. The PLC control system 27 adjusts the air intake flow of the oxygen source 26 and the opening of the first electric valve 29 and the second electric valve 29 according to the data fed back by the third dissolved oxygen sensor 81 and the fourth dissolved oxygen sensor 101 to stabilize the dissolved oxygen concentration in the aerobic pool 7 and the MBR pool 11. The dissolved oxygen concentration in the aerobic tank 7 is regulated by adjusting the size of the reflux through the third reflux pump 22, the dissolved oxygen concentration in the anoxic tank 4 is regulated by adjusting the size of the reflux through the second reflux pump 20, and the dissolved oxygen concentration in the anaerobic tank 2 is regulated by adjusting the size of the reflux through the first reflux pump 18. The process uses the oxygen-rich water produced by the ultra-nano aerosol reoxygenation device 24 to provide different concentrations of dissolved oxygen to each tank body. Air aeration is not used during the entire operation process, which reduces the impact of VOC on the environment, does not generate foam, avoids the impact of foam on the system, and accurately controls the dissolved oxygen concentration of each pool.

[0037] In summary, the utility model provides a sewage treatment device based on ultra-nano aerosol reoxygenation, which achieves the effects of improving sewage treatment efficiency, accurately controlling dissolved oxygen concentration, reducing environmental impact, and optimizing system operation by setting an ultra-nano aerosol reoxygenation device 24, an accurate sensor monitoring system, and an automated PLC control system 27. This device can not only improve the effluent water quality, but also reduce sludge production, reduce energy consumption and maintenance costs, and realize intelligent management of the sewage treatment process.

[0038] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A sewage treatment device based on ultra-nanogas dissolution and reoxygenation, characterized in that: It comprises an inlet pipe, an anaerobic tank, an anoxic tank, an aerobic tank, an MBR tank and a clean water tank which are connected in sequence; the MBR tank comprises an MBR membrane group, the MBR membrane group is connected with the clean water tank through an MBR suction pump, the MBR membrane group is connected with an MBR fan through a pipeline; the MBR tank is connected with an ultra-nano aerosol reoxygenation device.

2. The sewage treatment device based on super nanoaerosol reoxygenation according to claim 1 is characterized in that: It also includes a PLC control system and a liquid level sensor, a dissolved oxygen sensor, a flow pusher, and a reflux pump that are signal-connected to the PLC control system; the ultra-nano aerosol reoxygenation device is electrically connected to the PLC control system.

3. The sewage treatment device based on super nanoaerosol reoxygenation according to claim 2 is characterized in that: The liquid level sensor includes a first liquid level sensor disposed in the anaerobic tank, a second liquid level sensor disposed in the anoxic tank, a third liquid level sensor disposed in the aerobic tank, and a fourth liquid level sensor disposed in the MBR tank.

4. The sewage treatment device based on super nanoaerosol reoxygenation according to claim 2 is characterized in that: The dissolved oxygen sensor includes a first dissolved oxygen sensor disposed in the anaerobic tank, a second dissolved oxygen sensor disposed in the anoxic tank, a third dissolved oxygen sensor disposed in the aerobic tank, and a fourth dissolved oxygen sensor disposed in the MBR tank.

5. The sewage treatment device based on super nanoaerosol reoxygenation according to claim 2 is characterized in that: The flowmakers include a first flowmaker disposed in the anaerobic tank, a second flowmaker disposed in the anoxic tank, a third flowmaker disposed in the aerobic tank, and a fourth flowmaker disposed in the MBR tank.

6. The sewage treatment device based on super nanoaerosol reoxygenation according to claim 1 is characterized in that: A third water outlet is arranged on the side wall between the anoxic tank and the anaerobic tank, and a first water outlet is arranged on the side wall between the anoxic tank and the aerobic tank. The anoxic tank is connected with the anaerobic tank through the third water outlet, and the anoxic tank is connected with the aerobic tank through the first water outlet.

7. The sewage treatment device based on super nanoaerosol reoxygenation according to claim 6 is characterized in that: A second water outlet is arranged on the side wall between the aerobic pool and the MBR pool, and the aerobic pool is connected with the MBR pool through the second water outlet.

8. The sewage treatment device based on ultra-nanogas dissolution and reoxygenation according to claim 2 is characterized in that: The water outlet of the ultra-nano aerosol reoxygenation device is connected to the MBR tank through a first pipeline, a first electric valve is arranged on the first pipeline, and the first electric valve is connected to the PLC control system through a signal.

9. The sewage treatment device based on super nanoaerosol reoxygenation according to claim 2 is characterized in that: The water outlet of the ultra-nano aerosol reoxygenation device is connected to the aerobic tank through a second pipeline, a second electric valve is arranged on the second pipeline, and the second electric valve is connected to the PLC control system through a signal.

10. The sewage treatment device based on ultra-nanogas dissolution and reoxygenation according to claim 2 is characterized in that: The reflux pump includes a first reflux pump, a second reflux pump and a third reflux pump. The MBR pool is connected to the aerobic pool through the third reflux pump, the aerobic pool is connected to the anoxic pool through the second reflux pump, and the anoxic pool is connected to the anaerobic pool through the first reflux pump.

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