CN115385440B - Device for generating negative pressure and oxygenating by flowing water automatically - Google Patents
Device for generating negative pressure and oxygenating by flowing water automatically Download PDFInfo
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- CN115385440B CN115385440B CN202211315396.XA CN202211315396A CN115385440B CN 115385440 B CN115385440 B CN 115385440B CN 202211315396 A CN202211315396 A CN 202211315396A CN 115385440 B CN115385440 B CN 115385440B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
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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
Abstract
The invention relates to the technical field of sewage treatment, and particularly discloses a device for generating negative pressure to oxygenate by flowing water automatically, which comprises an upper water tank, a negative pressure system and a water outlet closed tank, wherein the upper water tank and the water outlet closed tank are communicated through the negative pressure system; the negative pressure system comprises a water inlet elbow, a negative pressure pipeline and a water inlet adjusting device; one end of the negative pressure pipeline is connected with one end of the water inlet elbow through a water inlet adjusting device, and the other end of the negative pressure pipeline extends into the position below the water surface of the water outlet closed pool; the other end of the water inlet elbow is used as a water inlet and is positioned below the water surface of the upper water pool. The invention can realize the high efficiency increase of dissolved oxygen by building water pools with different terrain heights and arranging the device at the joint between the pools.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a device for generating negative pressure and oxygenating by automatically flowing water flow.
Background
In the field of sewage treatment, dissolved oxygen supplementation is an essential link in each biological sewage treatment process, and the method for supplementing dissolved oxygen generally uses various aerators, needs a plurality of power equipment to provide energy and wastes resources.
Conventional aeration devices, usually using mechanical agitation or using an air pump, are used to aerate the water in order to increase the dissolved oxygen in the water. After the air is discharged into the water in the mode, only a small amount of oxygen is dissolved into the water, and the oxygen dissolved in the water in a molecular state can form stable dissolved oxygen, most of the oxygen exists in a bubble form, the detection value is high, the temporary oxygen is reduced at a high speed, and the oxygenation efficiency is low.
In the ecological sewage treatment process, dissolved oxygen is one of the most critical links, oxygen-consuming substances in the sewage are rich, and the pollutants can be oxidized by extremely much oxygen and enter the ecological cycle again. Energy conservation and environmental protection are a big problem of ecological civilization construction at present, and a large amount of resources are consumed for ecological management, so that the problem of improvement is also needed.
In addition, when high-concentration sewage is treated, high-density cultivation and planting are needed to realize high-efficiency conversion, and especially the high-density cultivation needs dissolved oxygen to guarantee, so that an energy-saving and environment-friendly high-efficiency oxygenation mode is very important.
According to Bernoulli's principle, when the flow rate of water is increased, a low-pressure area is formed on the surface of the water flow. When water flows in the pipeline, the pipeline forms a relatively closed space, so that the air pressure of a cavity in the pipeline is reduced, and oxygen molecules are more easily dissolved in water and utilized by aquatic organisms under a negative pressure state.
According to Stokes' law, the larger the diameter of the bubbles, the faster the rising speed, the rising speed of bubbles with a diameter of 1mm in water being 6m/min, and the rising speed of bubbles with a diameter of 10 μm in water being 3mm/min, the latter being 1/2000 of the former. If the increase of the specific surface area is considered, the dissolving capacity of the micro-nano bubbles is increased by 20 ten thousand times compared with that of the common air.
Currently, the devices manufactured according to the above principles in the prior art have good oxygenation effect and high energy consumption.
Therefore, how to provide a device for generating negative pressure oxygenation by flowing water automatically is a problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of this, the invention provides a device for generating negative pressure oxygenation through water flow gravity flow, which can realize zero power consumption and high efficiency increase of dissolved oxygen by building water pools with different terrain heights and arranging the device at the joint between the water pools.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device for generating negative pressure oxygenation through water flow self-flowing comprises an upper water pool, a negative pressure system and a water outlet closed pool, wherein the upper water pool and the water outlet closed pool are communicated through the negative pressure system;
the negative pressure system comprises a negative pressure pipeline and a water inlet adjusting device; one end of the negative pressure pipeline is connected with the water inlet adjusting device, and the other end of the negative pressure pipeline extends into the position below the water surface of the water outlet closed pool; the water inlet adjusting device is positioned below the water surface of the upper water pool.
Preferably, in the above device for generating negative pressure oxygenation by flowing water automatically, the water inlet adjusting device comprises a water inlet elbow, a connecting pipe and a fixing bolt; the water inlet of the water inlet elbow is close to the water surface, and the water outlet of the water inlet elbow is connected with the negative pressure pipeline; the fixing bolt comprises a nut, a screw rod and a knob.
Preferably, in the above device for generating negative pressure oxygenation by water flow self-flowing, a silencing cover is arranged above the water inlet, the bottom edge of the silencing cover is positioned below the water surface of the upper water tank, and the water inlet of the water inlet elbow is covered to form a closed space; the silencing cover comprises a fixed hoop, a fixed bracket, a sound-proof cover and a silencing air inlet pipe; the fixed hoop is fixed on the water inlet elbow, the fixed hoop is connected with the sound-proof housing through the fixed support, the silencing air inlet pipe is installed on a hole in the sound-proof housing, and the fixed support and the sound-proof housing are detachably installed.
Preferably, in the above apparatus for generating negative pressure oxygenation by flowing water automatically, the negative pressure pipeline is arranged in an inclined manner.
Preferably, in the above device for generating negative pressure oxygenation by flowing water automatically, the negative pressure pipeline is L-shaped, the vertical section of the negative pressure pipeline is connected with the water inlet elbow, and the horizontal section extends below the water surface of the water outlet closed tank.
Preferably, in above-mentioned rivers flow automatically and produce negative pressure oxygenation's device venturi is installed to water inlet department, and the venturi water inlet is located the surface of water 10cm below, venturi is provided with the venturi intake pipe, the air inlet of venturi intake pipe is located above the surface of water.
Preferably, in the above apparatus for generating negative pressure oxygenation by flowing water automatically, the inclination angle of the negative pressure pipeline is between 45 ° and 90 °.
Preferably, in the above device for generating negative pressure oxygenation by flowing water automatically, the difference between the water level of the upper water pool and the water level of the effluent closed pool is greater than 1.5 m.
Preferably, in the above apparatus for generating negative pressure by flowing water automatically, the negative pressure pipeline is a 160mm diameter pvc pipe.
According to the technical scheme, compared with the prior art, the device for generating negative pressure to oxygenate by automatically flowing water flow disclosed by the invention utilizes the principle that the water flow flows from a high position to a low position to drive air to generate negative pressure, so that the dissolved oxygen in the water body is accelerated.
The high and low topography is common in landscape type construction, the application of the invention can greatly save energy, through the implementation of the technology, oxygen molecules can be directly merged into water to form dissolved oxygen, in addition, a large amount of micro bubbles are formed in the continuous impacting process, the micro bubbles are remained in the water body for a long time according to Stokes law, and the water body has continuous oxygen supply capability.
When water flows into the negative pressure pipeline, the falling speed is accelerated, so that a low-pressure area is formed on the surface of the water flow, and meanwhile, a water outlet closed pool is arranged due to the sealing of a water inlet layer and the arrangement of a water outlet, and a negative pressure interval is formed in the negative pressure pipeline. In addition, due to the difference between the internal air pressure and the external air pressure, air bursting noise can be generated when air enters the negative pressure pipeline, noise pollution is generated, the silencing cover is buckled above the water inlet (also used as an air inlet), and meanwhile, the lower part of the silencing cover is in contact with the water surface to form a closed space, so that the sound is blocked.
In addition, after water is stretched by the difference between the internal pressure and the external pressure, water flow is dispersed through the impact of the pipe wall to form a gas-water fusion body, and in this state, oxygen molecules are directly fused into the water body to form stable dissolved oxygen. Meanwhile, a large amount of micro bubbles are generated, and oxygen is continuously supplied to the water body.
Because of the generation of negative pressure in the negative pressure pipeline, the friction force between water flow and the pipe wall is reduced, the flow speed of water is accelerated, and the air pressure in the negative pressure pipeline is reduced more quickly.
When water flow flows through the negative pressure system, the height of the water inlet is adjusted, when the water inflow reaches a certain degree, negative pressure is formed in the negative pressure pipeline, the height of the water inlet is adjusted again, when the air explosion noise reaches the maximum, the negative pressure in the negative pressure pipeline is the maximum, and the air-water fusion effect is the best.
When negative pressure water flow flows out of the pipeline, the water flow enters the water outlet closed pool, the air-water mixture mixed with a large amount of bubbles impacts on the wall of the water outlet closed pool, a large amount of micro bubbles are generated again, and air and the water body are better fused together. The water surface of the negative pressure pipeline water outlet which is immersed into the water outlet closed pool is not too much, the less the negative pressure pipeline water outlet is immersed into the water surface under the condition of keeping sealing, the better the negative pressure pipeline water outlet is, and the water surface is generally 5-10cm.
The technology is simple to operate and implement, only a common water pump is needed to lift water flow when the technology is implemented independently, zero energy consumption is achieved in a system with a circulating water system, dissolved oxygen is increased, the technology has obvious effects on quickly removing sewage peculiar smell and continuously increasing the dissolved oxygen in a water body, in addition, sufficient dissolved oxygen is provided for aquatic organisms in the aspect of aquaculture, and guarantee is provided for increasing aquaculture density. In addition, the method can generate a large amount of micro bubbles for continuously supplying oxygen, so that the bottom mud can be effectively improved, and the consumption of a large amount of manpower and material resources due to the treatment of the bottom mud is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view of embodiment 1;
FIG. 2 is a schematic structural view of embodiment 2;
FIG. 3 is a schematic structural view of embodiment 3;
fig. 4 is a schematic view of an installation structure of the fixing bolt in embodiment 1.
In the figure: 1. the device comprises an upper water pool, 2, a water outlet closed pool, 4, a negative pressure pipeline, 6, a water inlet adjusting device, 61, a water inlet elbow, 62, a connecting pipe, 63, a fixing bolt, 51, a nut, 52, a screw rod, 53, a knob, 7, a silencing cover, 71, a silencing air inlet pipe, 72, a fixing hoop, 73, a fixing support, 74, a sound-proof cover, 8, venturi pipe, 81 and a Venturi air inlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment of the invention discloses a device for generating negative pressure oxygenation through water flow self-flowing, which comprises an upper water pool 1, a negative pressure system and a water outlet closed pool 2, wherein the upper water pool 1 and the water outlet closed pool 2 are communicated through the negative pressure system;
the negative pressure system comprises a water inlet adjusting device 6 and a negative pressure pipeline 4; one end of the negative pressure pipeline 4 is connected with a water inlet adjusting device 6, and the other end of the negative pressure pipeline extends into the water below the water surface of the water outlet closed pool 2; the water inlet adjusting device 6 is positioned below the water surface of the upper water pool 1.
In order to further optimize the above technical solution, the water inlet adjusting device 6 comprises a water inlet elbow 61, a connecting pipe 62 and a fixing bolt 63; the water inlet of the water inlet elbow 61 is close to the water surface, and the water outlet is connected with the negative pressure pipeline 4 through a connecting pipe 62; the fixing bolts 63 are respectively fixed at the joints of the water inlet elbow 61, the connecting pipe 62 and the water inlet of the negative pressure pipeline 4.
In order to further optimize the above technical solution, the fixing bolt 63 comprises a nut 51, a screw 52 and a knob 53; nut 51 is installed at the end kneck of intaking and the play water end kneck of connecting pipe 62, and knob 53 is installed to screw rod 52 one end, and the other end supports respectively through the nut and fixes a position the inner wall at the elbow of intaking 61 and the negative pressure pipeline 4 water inlet, adjusts the height of the elbow of intaking 61 apart from the surface of water or rotatory connecting pipe 62 and negative pressure pipeline water inlet, makes the elbow of intaking 61 slope, all can adjust the degree of depth of the elbow of intaking 62 water inlet apart from the surface of water.
In order to further optimize the technical scheme, a silencing cover 7 is arranged above the water inlet of the water inlet elbow 61, the bottom edge of the silencing cover 7 is positioned below the water surface of the upper water pool 1, and the water inlet of the water inlet elbow 61 is covered to form a closed space; the muffling cover 7 comprises a fixed hoop 72, a fixed bracket 73, a soundproof cover 74 and a muffling air inlet pipe 71; the fixed hoop 72 is fixed on the water inlet elbow 61, the fixed hoop 72 is connected with the sound-proof cover 74 through the fixed bracket 73, the silencing air inlet pipe 71 is arranged on a hole on the sound-proof cover 74, and the fixed bracket 73 and the sound-proof cover 74 are detachably arranged.
In order to further optimize the above technical solution, the negative pressure conduit 4 is arranged in an inclined manner.
In order to further optimize the technical scheme, the difference between the horizontal plane of the upper water pool 1 and the horizontal plane of the effluent closed pool 2 is more than 1.5 meters.
In order to further optimize the technical scheme, a PVC pipe with the diameter of 160 mmis adopted for the negative pressure pipeline 4. In the embodiment, in a pool which occupies 20 mu and has the average water depth of 4 m, the dissolved oxygen can reach 7-9mg/L at the depth of 3.5 m.
Example 2
The embodiment of the invention discloses a device for generating negative pressure oxygenation through water flow self-flowing, which comprises an upper water pool 1, a negative pressure system and a water outlet closed pool 2, wherein the upper water pool 1 and the water outlet closed pool 2 are communicated through the negative pressure system;
the negative pressure system comprises a water inlet adjusting device 6 and a negative pressure pipeline 4; one end of the negative pressure pipeline 4 is connected with a water inlet adjusting device 6, and the other end of the negative pressure pipeline extends into the water below the water surface of the water outlet closed pool 2; the water inlet adjusting device 6 is positioned below the water surface of the upper water pool 1.
In order to further optimize the above technical solution, the water inlet adjusting device 6 comprises a water inlet elbow 61 and a fixing bolt 63; the water inlet of the water inlet elbow 61 is close to the water surface, and the water outlet is connected with the negative pressure pipeline 4; the fixing bolts 63 are respectively fixed at the connection part between the water inlet elbow 61 and the negative pressure pipeline 4.
In order to further optimize the above technical solution, the fixing bolt 63 includes a nut 51, a screw 52 and a knob 53; the nut 51 is arranged at the interface of the water outlet end of the water inlet elbow 61, the knob 53 is arranged at one end of the screw rod 52, the other end of the screw rod is propped against the water inlet of the water inlet elbow 61 and the water inlet of the negative pressure pipeline 4 through the nut for positioning and fixing, and the height of the water inlet elbow 61 from the water surface is adjusted.
In order to further optimize the technical scheme, a silencing cover 7 is arranged above the water inlet of the water inlet elbow 61, the bottom edge of the silencing cover 7 is positioned below the water surface of the upper water pool 1, and the water inlet of the water inlet elbow 61 is covered to form a closed space; the muffling cover 7 comprises a fixed hoop 72, a fixed bracket 73, a soundproof cover 74 and a muffling air inlet pipe 71; the fixed hoop 72 is fixed on the water inlet elbow 61, the fixed hoop 72 is connected with the sound-proof cover 74 through the fixed bracket 73, the silencing air inlet pipe 71 is arranged on a hole on the sound-proof cover 74, and the fixed bracket 73 and the sound-proof cover 74 are detachably arranged.
In order to further optimize the technical scheme, the negative pressure pipeline 4 is L-shaped, the vertical section of the negative pressure pipeline 4 is connected with the adjusting elbow 61, and the horizontal section of the negative pressure pipeline extends into the position below the water surface of the water outlet closed pool 2.
In order to further optimize the technical scheme, the difference between the horizontal plane of the upper water pool 1 and the horizontal plane of the water outlet closed pool 2 is larger than 1.5 meters.
In order to further optimize the technical scheme, a PVC pipe with the diameter of 160 mmis adopted for the negative pressure pipeline 4.
Example 3
The embodiment of the invention discloses a device for generating negative pressure to oxygenate by flowing water automatically, which comprises an upper water tank 1, a negative pressure system and a water outlet closed tank 2, wherein the upper water tank 1 and the water outlet closed tank 2 are communicated through the negative pressure system;
the negative pressure system comprises a water inlet adjusting device 6 and a negative pressure pipeline 4; one end of the negative pressure pipeline 4 is connected with a water inlet adjusting device 6, and the other end of the negative pressure pipeline extends into the water below the water surface of the water outlet closed pool 2; the water inlet adjusting device 6 is positioned below the water surface of the upper water pool 1.
In order to further optimize the above technical solution, the water inlet adjusting device 6 comprises a water inlet elbow 61 and a fixing bolt 63; the water inlet of the water inlet elbow 61 is close to the water surface, and the water outlet is connected with the negative pressure pipeline 4; the fixing bolts 63 are respectively fixed at the connection part between the water inlet elbow 61 and the negative pressure pipeline 4.
In order to further optimize the above technical solution, the fixing bolt 63 comprises a nut 51, a screw 52 and a knob 53; the nut 51 is arranged at the interface of the water outlet end of the water inlet elbow 61, the knob 53 is arranged at one end of the screw rod 52, the other end of the screw rod is propped against the water inlet of the water inlet elbow 61 and the water inlet of the negative pressure pipeline 4 through the nut for positioning and fixing, and the height of the water inlet elbow 61 from the water surface is adjusted.
In order to further optimize the above technical scheme, venturi 8 is installed at regulation elbow 61, and venturi 8 water inlet is located the surface of water below 10cm, and venturi 8 is provided with venturi intake pipe 81, and the air inlet of venturi intake pipe 81 is located above the surface of water.
In order to further optimize the technical scheme, the inclination angle of the negative pressure pipeline 4 is between 45 and 90 degrees.
In order to further optimize the technical scheme, the difference between the horizontal plane of the upper water pool 1 and the horizontal plane of the effluent closed pool 2 is more than 1.5 meters.
In order to further optimize the technical scheme, the negative pressure pipeline 4 is a PVC pipe with the diameter of 160 mmPVC.
The working principle is as follows:
when water flows into the negative pressure pipeline 4, the falling speed is accelerated, so that a low-pressure area is formed on the surface of the water flow, and meanwhile, because the water inlet water layer is sealed and the water outlet is provided with the water outlet sealed pool 2, a negative pressure interval is formed in the negative pressure pipeline 4. In addition, due to the difference between the internal air pressure and the external air pressure, air bursting noise can be formed when air enters the negative pressure pipeline 4, noise pollution is generated, the silencing cover 7 is buckled above the water inlet 6 (which is also an air inlet), and meanwhile, the lower part of the silencing cover 7 is in contact with the water surface, a closed space is formed, sound is blocked, and the noise pollution is reduced.
In addition, the air pressure difference is formed between the inside of the pipeline and the surface of the water surface, the water surface is punctured by airflow under the action of the air pressure difference to form high-speed airflow holes, and meanwhile, sound similar to sonic boom is generated, and in the state, oxygen molecules are directly fused into the water body to form stable dissolved oxygen. In addition, the water flows are dispersed by the impact of the inlet water through the pipe wall to form a gas-water fusion body, and a large amount of micro bubbles are generated at the same time, so that oxygen can be continuously supplied to the water body.
Because of the generation of negative pressure in the negative pressure pipeline 4, the friction force between water flow and the pipe wall is reduced, the flow speed of water is accelerated, and the increase of the negative pressure in the negative pressure pipeline 4 is quickened.
When rivers flow through negative pressure system, adjust the water inlet height, when the inflow reaches certain degree, form the negative pressure in the negative pressure pipeline 4, adjust the water inlet height again this moment, when the air blast sound reaches the biggest, the negative pressure in the negative pressure pipeline 4 is the biggest, and the air-water fusion effect at this moment is best.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A device for generating negative pressure for oxygenation by flowing water automatically is characterized by comprising an upper water pool, a negative pressure system and a water outlet closed pool, wherein the upper water pool and the water outlet closed pool are communicated through the negative pressure system;
the negative pressure system comprises a negative pressure pipeline and a water inlet adjusting device; one end of the negative pressure pipeline is connected with the water inlet adjusting device, and the other end of the negative pressure pipeline extends into the position below the water surface of the water outlet closed pool; the water inlet adjusting device is positioned below the water surface of the upper water pool; the water inlet adjusting device comprises a water inlet elbow and a fixing bolt; the water inlet of the water inlet elbow is close to the water surface, and the water outlet of the water inlet elbow is connected with the negative pressure pipeline; the fixing bolt comprises a nut, a screw and a knob; a silencing cover is arranged above the water inlet, the bottom edge of the silencing cover is positioned below the water surface of the upper water pool, and the water inlet of the water inlet elbow is covered to form a closed space; the silencing cover comprises a fixed hoop, a fixed bracket, a sound-proof cover and a silencing air inlet pipe; the fixed hoop is fixed on the water inlet elbow, the fixed hoop is connected with the sound-proof housing through the fixed support, the silencing air inlet pipe is installed on a hole in the sound-proof housing, and the fixed support and the sound-proof housing are detachably installed.
2. The apparatus of claim 1, wherein the negative pressure conduit is arranged in an inclined manner.
3. The apparatus of claim 1 wherein the negative pressure conduit is L-shaped, the vertical section of the negative pressure conduit is connected to the inlet elbow, and the horizontal section extends below the water surface of the outlet enclosure.
4. The device of claim 1, wherein the water inlet is equipped with a venturi tube, the venturi tube water inlet is located below 10cm of water surface, the venturi tube is provided with a venturi air inlet tube, and the air inlet of the venturi air inlet tube is located above the water surface.
5. The apparatus of claim 4 wherein the angle of inclination of the negative pressure conduit is between 45 ° and 90 °.
6. The apparatus of claim 1 wherein the difference between the level of the upper basin and the level of the closed outlet basin is greater than 1.5 meters.
7. The apparatus of claim 1, wherein the negative pressure conduit is a 160mm diameter PVC pipe.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205088017U (en) * | 2015-09-23 | 2016-03-16 | 深圳市深水宝安水务集团有限公司 | Dissolved oxygen device |
| CN110078229A (en) * | 2018-01-26 | 2019-08-02 | 林德股份公司 | Pond oxygen dissolver |
| CN209704798U (en) * | 2019-04-17 | 2019-11-29 | 嘉兴中诚环保科技股份有限公司 | Vibrationproof noise reduction exhaust gas wastewater collection attachment device |
| CN210505730U (en) * | 2019-07-31 | 2020-05-12 | 河南中汇环保科技有限公司 | Closed type energy-consumption-free high-efficiency homogeneous sewage aeration device |
| CN211983340U (en) * | 2020-04-07 | 2020-11-24 | 陈骏鹏 | Mixed oxygen water pushing device |
| CN217398529U (en) * | 2022-02-25 | 2022-09-09 | 广州博亚涛生态科技有限公司 | Drop-out oxygenating device |
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