CN116477774A - Multi-claw rotational flow jet screen mesh enhanced aeration device and aeration process - Google Patents
Multi-claw rotational flow jet screen mesh enhanced aeration device and aeration process Download PDFInfo
- Publication number
- CN116477774A CN116477774A CN202310583973.1A CN202310583973A CN116477774A CN 116477774 A CN116477774 A CN 116477774A CN 202310583973 A CN202310583973 A CN 202310583973A CN 116477774 A CN116477774 A CN 116477774A
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- Prior art keywords
- liquid
- gas
- aeration
- claw
- buffer chamber
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005273 aeration Methods 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 157
- 210000000078 claw Anatomy 0.000 claims abstract description 45
- 239000006185 dispersion Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims 2
- 230000005587 bubbling Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 230000016507 interphase Effects 0.000 abstract description 5
- 238000004401 flow injection analysis Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 43
- 238000005276 aerator Methods 0.000 description 14
- 239000012071 phase Substances 0.000 description 14
- 238000009792 diffusion process Methods 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000010865 sewage Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 3
- 238000004581 coalescence Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention discloses a multi-claw rotational flow injection screen mesh enhanced aeration device and an aeration process, wherein the aeration device comprises a gas buffer chamber, the gas buffer chamber is sleeved outside a liquid buffer chamber, a plurality of aeration claws are connected between the gas buffer chamber and the liquid buffer chamber in an annular array, each aeration claw comprises a liquid rotational flow section and a gas-liquid dispersion pipe, one end of the liquid rotational flow section extends into the liquid buffer chamber, the other end of the liquid rotational flow section is connected with the gas-liquid dispersion pipe, a plurality of rotational flow holes are distributed at the end part of the liquid rotational flow section extending into the liquid buffer chamber, and a plurality of screen mesh inner members are arranged in the gas-liquid dispersion pipe along the axial direction of the gas-liquid dispersion pipe. According to the invention, by introducing rotational flow into the flow, the fluid generates radial flow, and the mass transfer efficiency is enhanced; the dispersed large bubbles are crushed into small bubbles or micro bubbles with larger specific surface area and higher interphase mass transfer coefficient through the screen inner member, so that the contact effect between the flowing state in the mixer and the fluid is improved, the mass transfer between phases in the radial range is enhanced, and the mixing of the phases in the aeration tank is promoted.
Description
Technical Field
The invention relates to an aeration device and an aeration process, in particular to a multi-claw rotational flow injection screen mesh reinforced aeration device and an aeration process.
Background
The aerator is used as core equipment for sewage treatment, and the quality of the performance of the aerator directly determines the effect and cost of sewage treatment, so that the novel high-efficiency aerator is designed to have better application prospect. A generally good aeration device needs to have the following characteristics: firstly, enough gas can be introduced into an aeration tank, and the introduced gas can be converted into bubbles with smaller diameters, so that the contact area of the gas and water and the utilization rate of oxygen are improved. And secondly, each phase in the aeration tank is fully mixed, so that the contact area is increased, and the pollutant removal rate is improved. Aeration equipment can be generally classified into a blast aerator, a mechanical aerator, and a jet aerator.
The blast aerator is characterized in that air is sent to an air distributor or an air diffusion pipe at the bottom of an aeration tank through an air blower or an air compressor, and then the air is dispersed into small bubbles with different sizes and is diffused in the mixed liquid, so that the mixed liquid is in a severe turbulence state, and meanwhile, oxygen in the bubbles is transferred into the mixed liquid. The air blast aeration device has the defects of complex air supply pipeline, high noise, easy blockage of the air diffusion pipe and short service life. The mechanical aerator rotates the surface of water body to generate hydraulic jump, throws a great amount of liquid into the air, and makes the liquid contact with air to dissolve oxygen into water fast. The equipment is simple and centralized, is suitable for small-scale sewage treatment, but has the defects of higher energy consumption, low power efficiency and high water depth requirement.
Jet aeration is a method between blast aeration and mechanical aeration, has the advantages of the two aeration devices, and the jet aerator is used for injecting air or a gas-liquid mixture into an aeration tank through jet flow, achieving the aim of mixing through hydraulic shearing and bubble diffusion, mainly comprising a nozzle, a suction chamber, a mixing pipe and a diffusion pipe, and injecting liquid and air into an aeration tank after the jet aeration device mixes the liquid and the air in the aeration tank, so that the good gas-liquid mixing effect enables the oxygenation performance of the aeration tank to be better, and can play a good stirring role in the aeration tank, and the jet aerator can be divided into pressure air supply and self-priming air supply according to the air supply mode. The jet aerator is a relatively common jet aeration device, and can break gas into a large number of small bubbles and even micro bubbles, so that the contact area of gas and liquid phases is increased, and meanwhile, a stronger turbulent mixing state is shown at the gas-liquid contact part, and rapid mixing and mass transfer among the phases can be realized. The jet aerator has the advantages of simple operation, no moving parts, good gas-liquid mixing effect, excellent mass transfer performance and high oxygen transfer efficiency, and has been widely applied to the treatment process of domestic sewage and various industrial waste water in recent years.
Disclosure of Invention
The invention aims to: the invention aims to provide a multi-claw rotational flow jet screen mesh reinforced aeration device and an aeration process, which reinforce the aeration device by adopting rotational flow design and internal member design, so that the aeration device has high-efficiency self-air suction capability, and simultaneously, the diameter of bubbles in a mixing pipe is effectively reduced, and the high-efficiency dispersion of the bubbles in a liquid phase is reinforced.
The technical scheme is as follows: the invention comprises a gas buffer chamber, a liquid buffer chamber and aeration claws, wherein the gas buffer chamber is sleeved outside the liquid buffer chamber, a plurality of aeration claws are connected between the gas buffer chamber and the liquid buffer chamber in an annular array, the aeration claws comprise liquid cyclone sections and gas-liquid dispersion pipes, one ends of the liquid cyclone sections extend into the liquid buffer chamber, the other ends of the liquid cyclone sections are connected with the gas-liquid dispersion pipes, a plurality of cyclone holes are distributed at the ends of the liquid cyclone sections extending into the liquid buffer chamber, and a plurality of screen mesh inner members are arranged in the gas-liquid dispersion pipes along the axial direction of the gas-liquid dispersion pipes.
An included angle is formed between the center line of the swirl hole and the normal line of the pipe wall, and swirl is introduced into the flow, so that radial flow is generated for the fluid, the mixing between the fluids is enhanced, the internal turbulence energy level and dissipation rate of the fluid are improved, and the mass transfer efficiency is enhanced.
The inner diameter of the liquid cyclone section is smaller than that of the gas-liquid dispersing pipe, so that gas enters the gas-liquid dispersing pipe from a gap between the liquid cyclone section and the gas-liquid dispersing pipe.
The upper surface of the gas buffer chamber is provided with a plurality of gas inlets in an annular array.
The lower part of the liquid buffer chamber is provided with a water inlet.
The aeration claw penetrates through the gas buffer chamber and the liquid buffer chamber along the radial direction.
The aeration process of the multi-claw rotational flow jet screen intensified aeration device is as follows: the gas is continuously sucked into the gas-liquid dispersing pipe of the aeration claw after passing through the gas inlet and the gas buffer chamber; the liquid enters the gas-liquid dispersing pipe after passing through the water inlet, the liquid buffer chamber, the swirl hole and the liquid swirl section; the gas-liquid two phases form gas-liquid mixed liquid after passing through the inner member of the screen, and then enter the aeration tank.
The gas enters the gas-liquid dispersing pipe from the gap between the liquid cyclone section and the gas-liquid dispersing pipe.
The gas is self-absorbed or blown into the gas buffer chamber through the gas inlet.
The flow rate of the liquid passing through the swirl holes is not lower than twice the flow rate of the inside of the gas-liquid dispersing pipe.
The beneficial effects are that: according to the invention, by introducing rotational flow into the flow, the fluid generates radial flow, the mixing between the fluids is enhanced, the internal turbulence energy level and dissipation rate of the fluid are improved, and the mass transfer efficiency is enhanced; the sieve inner member is arranged in the pipeline to reduce axial and radial diffusion, so that dispersed large bubbles are further crushed into small bubbles or microbubbles with larger specific surface area and higher interphase mass transfer coefficient, and the probability of bubble coalescence is reduced, thereby improving the contact effect between the flowing state in the mixer and the fluid, enhancing the mass transfer between phases in the radial range and promoting the full mixing of the phases in the aeration tank.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a schematic view of a swirl orifice inlet of the present invention;
FIG. 5 is a graph showing bubble flow patterns in a gas-liquid dispersion tube of a single jet aeration claw in example 1;
FIG. 6 is a graph showing bubble flow patterns in a gas-liquid dispersion tube of a single jet aeration claw in example 2;
FIG. 7 is a graph showing bubble flow patterns in a gas-liquid dispersion tube of a single jet aeration claw in example 3.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the invention comprises a gas buffer chamber 1, a liquid buffer chamber 2 and an aeration claw 3, wherein a plurality of air inlets 4 are annularly arranged on the upper surface of the gas buffer chamber 1, gas is self-absorbed or blown into the gas buffer chamber 1 through the air inlets 4, a water inlet 5 is arranged at the lower part of the liquid buffer chamber 2, and liquid enters the liquid buffer chamber 2 through the water inlet 5. The gas buffer chamber 1 is sleeved outside the liquid buffer chamber 2, a plurality of aeration claws 3 are connected between the gas buffer chamber 1 and the liquid buffer chamber 2 in an annular array, the number of the aeration claws 3 is at least 2, preferably 3-8, and each aeration claw 3 penetrates through the gas buffer chamber 1 and the liquid buffer chamber 2. The aeration claw 3 comprises a liquid cyclone section 7 and a gas-liquid dispersing pipe 8, wherein one end of the liquid cyclone section 7 extends into the liquid buffer chamber 2, the other end of the liquid cyclone section 7 is connected with the gas-liquid dispersing pipe 8, and the inner diameter of the liquid cyclone section 7 is smaller than that of the gas-liquid dispersing pipe 8, so that gas enters the gas-liquid dispersing pipe 8 from a gap between the liquid cyclone section 7 and the gas-liquid dispersing pipe 8.
The end part of the liquid cyclone section 7 extending into the liquid buffer chamber 2 is uniformly provided with a plurality of cyclone holes 6, and the liquid enters the aeration claw 3 through the cyclone holes 6, forms cyclone flowing liquid in the liquid cyclone section 7, and then enters the gas-liquid dispersing pipe 8. As shown in fig. 1 and 2, a plurality of screen inner members 9 are provided in the gas-liquid dispersing pipe 8 along the axial direction thereof, the number of screens is at least 1, preferably 2 to 4, and the open area fraction of the screens is 30 to 80%. After the gas and the liquid entering the gas-liquid dispersing pipe 8 continuously pass through the plurality of screen inner members 9, uniform micro-bubble gas-liquid mixed liquid is formed and enters the aeration tank. Because the gas-liquid dispersing pipe 8 is internally provided with a plurality of screen internal components 9 along the axial direction thereof, higher turbulence intensity can be generated near the openings of the screen, and gas-liquid two phases can form bubbles with smaller diameters after passing through the screen, so that the inter-phase contact area and inter-phase mass transfer efficiency of the gas-liquid two phases are greatly improved.
As shown in figure 4, the center line of the swirl hole 6 at the liquid inlet of the aeration claw 3 forms a certain angle alpha with the normal line at the pipe wall, the alpha range is 5-60 degrees, and swirl is introduced into the flow, so that the fluid generates radial flow, the mixing between the fluids is enhanced, the turbulence energy level and dissipation rate in the fluid are improved, and the mass transfer efficiency is enhanced.
The number of swirl holes 6 is 1 or more, preferably an even number. The flow rate inside the aeration claw is not less than 1m/s, preferably 2m/s to 10m/s, wherein the flow rate through the swirl holes 6 is not less than 2 times, preferably 4 to 8 times, the flow rate inside the gas-liquid dispersion tube of the aeration claw.
By arranging the screen inner member 9 in the pipeline, the dispersed large bubbles are further crushed into small bubbles or micro bubbles with larger specific surface area and higher interphase mass transfer coefficient, and the probability of bubble coalescence is reduced, so that the contact effect between the flowing state in the mixer and the fluid is improved, the mass transfer between phases in the radial range is enhanced, the full mixing of the phases in the aeration tank is promoted, and the axial and radial diffusion is reduced.
The aeration device is reinforced by adopting a rotational flow design and a screen mesh inner member design, so that the aerator has high-efficiency self-air suction capacity, and meanwhile, the diameter of bubbles in a mixing pipe is effectively reduced, and the high-efficiency dispersion of the bubbles in a liquid phase is reinforced.
The aeration process of the invention is as follows:
the gas is continuously sucked into the gas-liquid dispersing pipe 8 of the aeration claw after passing through the gas inlet 4 and the gas buffer chamber 1; the liquid enters the gas-liquid dispersing pipe 8 after passing through the water inlet 5, the liquid buffer chamber 2, the cyclone holes 6 and the liquid cyclone sections 7; the gas-liquid two phases form uniform gas-liquid mixed liquid after passing through the screen inner member 9, and then enter an aeration tank.
Example 1:
the multi-claw cyclone spraying screen mesh reinforced aeration device has the specific structure that: the number of the aeration claws is 6, the number of swirl holes 6 uniformly distributed at the liquid inlet of the jet aeration claw is 4, the included angle between the center line of the swirl holes 6 and the normal line at the pipe wall is 15 degrees, the number of the screen inner members 9 is 2, and the area fraction of the screen opening is 38%. The liquid enters the aeration claws 3 through the swirl holes 6, and the flow rate of the liquid in each aeration claw 3 is 1.47m/s. Under the action of stronger centrifugal force and high-speed jet flow, local negative pressure is generated near the outlet of the liquid jet pipe, gas is continuously sucked into the gas-liquid dispersing pipe 8 of the aeration claw after passing through the gas inlet 4 and the gas buffer chamber 1, and then gas-liquid two phases can form uniform micro-bubble gas-liquid mixed liquid after passing through the screen inner member 9 and enter the aeration tank. FIG. 5 is a diagram of bubble flow patterns in a gas-liquid dispersion tube of a single jet aeration claw.
Example 2:
the multi-claw cyclone spraying screen mesh reinforced aeration device has the specific structure that: the number of the aeration claws is 6, the number of swirl holes 6 uniformly distributed at the liquid inlet of the jet aeration claw is 4, the included angle between the center line of the swirl holes 6 and the normal line at the pipe wall is 15 degrees, the number of the screen inner members 9 is 2, and the area fraction of the screen opening is 47%. The liquid enters the jet aeration claws through the swirl holes 6, and the flow velocity of the liquid in each jet aeration claw is 2.06m/s. Under the action of stronger centrifugal force and high-speed jet flow, local negative pressure is generated near the outlet of the liquid jet pipe, gas is continuously sucked into the gas-liquid dispersing pipe 8 of the aeration claw after passing through the gas inlet 4 and the gas buffer chamber 1, and then gas-liquid two phases can form uniform micro-bubble gas-liquid mixed liquid after passing through the screen inner member 9 and enter the aeration tank. FIG. 6 is a graph of bubble flow patterns in a gas-liquid dispersion tube of a single jet aeration claw.
Example 3:
the multi-claw cyclone spraying screen mesh reinforced aeration device has the specific structure that: the number of the aeration claws is 6, the number of swirl holes 6 uniformly distributed at the liquid inlet of the jet aeration claw is 4, the included angle between the center line of the swirl holes 6 and the normal line at the pipe wall is 5 degrees, the number of the screen inner members 9 is 3, and the area fraction of the screen opening is 47%. The liquid enters the jet aeration claws through the swirl holes 6, and the flow velocity of the liquid in each jet aeration claw is 2.35m/s. Under the action of stronger centrifugal force and high-speed jet flow, local negative pressure is generated near the outlet of the liquid jet pipe, gas is continuously sucked into the gas-liquid dispersing pipe 8 of the aeration claw after passing through the gas inlet 4 and the gas buffer chamber 1, and then gas-liquid two phases can form uniform micro-bubble gas-liquid mixed liquid after passing through the screen inner member 9 and enter the aeration tank. FIG. 7 is a graph of bubble flow patterns in a gas-liquid dispersion tube of a single jet aeration claw.
According to the jet aerator provided by the invention, gas can enter the gas-liquid dispersion pipe of the jet aeration claw through two modes of air blowing and self-sucking, so that the diameter of bubbles in the mixing pipe can be effectively reduced while the gas is efficiently self-sucked, the efficient dispersion of the bubbles in the liquid phase is enhanced, and the mass transfer between the gas phase and the liquid phase is enhanced; the aeration oxygenation area is larger, the mass transfer efficiency and jet aeration efficiency of oxygen in the liquid phase can be improved, the structure is simple, the installation is convenient, the cost is lower, the later maintenance is facilitated, and the device has better application in the technical field of water treatment.
Claims (10)
1. The utility model provides a many claws whirl jet screen cloth intensive aeration device, its characterized in that includes gas buffer room, liquid buffer room and aeration claw, gas buffer room cover is established in the liquid buffer room outside, is annular array connection between gas buffer room and the liquid buffer room and has a plurality of aeration claws, the aeration claw includes liquid whirl section and gas-liquid dispersion pipe, wherein, the one end of liquid whirl section stretches into in the liquid buffer room, and the other end is connected with the gas-liquid dispersion pipe, and the tip distribution of the liquid whirl section that stretches into in the liquid buffer room has a plurality of whirl holes, be equipped with a plurality of screen cloth internals along its axial in the gas-liquid dispersion pipe.
2. The multi-claw swirling jet screen intensified aeration apparatus according to claim 1, wherein an included angle is formed between the center line of the swirling flow hole and the normal line of the pipe wall.
3. The multi-claw swirling jet screen intensified aeration apparatus according to claim 1, wherein the inner diameter of the liquid swirling section is smaller than the inner diameter of the gas-liquid dispersion tube.
4. The multi-claw swirling jet screen intensified aeration apparatus according to claim 1, wherein the gas buffer chamber has a plurality of gas inlets in an annular array on the upper surface.
5. The multi-claw swirling jet screen intensified aeration apparatus according to claim 1, wherein the liquid buffer chamber is provided with a water inlet at the lower part.
6. The multi-claw swirling jet screen intensified aeration apparatus according to claim 1, wherein the aeration claw penetrates the gas buffer chamber and the liquid buffer chamber in a radial direction.
7. An aeration process using a multi-claw swirling jet screen intensified aeration apparatus according to any one of claims 1 to 6, characterized in that the aeration process is: the gas is continuously sucked into the gas-liquid dispersing pipe of the aeration claw after passing through the gas inlet and the gas buffer chamber; the liquid enters the gas-liquid dispersing pipe after passing through the water inlet, the liquid buffer chamber, the swirl hole and the liquid swirl section; the gas-liquid two phases form gas-liquid mixed liquid after passing through the inner member of the screen, and then enter the aeration tank.
8. The aeration process of a multi-claw swirling jet screen intensified aeration apparatus according to claim 7, wherein the gas enters the gas-liquid dispersion tube from a gap between the liquid swirling section and the gas-liquid dispersion tube.
9. The aeration process of a multi-claw swirling jet screen intensified aeration apparatus according to claim 7, wherein said gas is self-priming or bubbling into a gas buffer chamber through a gas inlet.
10. An aeration process for a multi-claw swirling jet screen intensified aeration apparatus according to claim 7, wherein the flow velocity of the liquid passing through the swirling flow holes is not lower than twice the flow velocity inside the gas-liquid dispersion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310583973.1A CN116477774A (en) | 2023-05-23 | 2023-05-23 | Multi-claw rotational flow jet screen mesh enhanced aeration device and aeration process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310583973.1A CN116477774A (en) | 2023-05-23 | 2023-05-23 | Multi-claw rotational flow jet screen mesh enhanced aeration device and aeration process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116477774A true CN116477774A (en) | 2023-07-25 |
Family
ID=87219653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310583973.1A Pending CN116477774A (en) | 2023-05-23 | 2023-05-23 | Multi-claw rotational flow jet screen mesh enhanced aeration device and aeration process |
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| Country | Link |
|---|---|
| CN (1) | CN116477774A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116789286B (en) * | 2023-08-29 | 2023-11-28 | 江苏佳顺环境科技有限公司 | Biological sewage treatment equipment and treatment method thereof |
-
2023
- 2023-05-23 CN CN202310583973.1A patent/CN116477774A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116789286B (en) * | 2023-08-29 | 2023-11-28 | 江苏佳顺环境科技有限公司 | Biological sewage treatment equipment and treatment method thereof |
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