WO2025081464A1 - Aeration system for wastewater treatment tank - Google Patents
Aeration system for wastewater treatment tank Download PDFInfo
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- WO2025081464A1 WO2025081464A1 PCT/CN2023/125627 CN2023125627W WO2025081464A1 WO 2025081464 A1 WO2025081464 A1 WO 2025081464A1 CN 2023125627 W CN2023125627 W CN 2023125627W WO 2025081464 A1 WO2025081464 A1 WO 2025081464A1
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- sleeve
- main shaft
- spiral wing
- sealing plate
- driving mechanism
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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
- C02F7/00—Aeration of stretches of water
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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
Definitions
- the invention relates to the field of sewage treatment systems, in particular to an aeration system for a sewage treatment tank.
- sewage treatment pools are usually required.
- jet aerators are currently usually used to aerate the treatment pool; its basic principle is to use a centrifuge to generate a jet in the pool, and the negative pressure generated by the jet pulls the outside air, so that the air and the jet enter the diffusion tube together for mixing and discharge into the pool.
- This type of jet aerator relies solely on the negative pressure of the jet to pull the airflow, and allows the air and the jet to mix freely in the diffusion tube. Due to the lack of coercive force, the mixing efficiency is very limited. A large amount of air cannot quickly dissolve in the water after entering the pool, and floats to the surface in the form of large bubbles, resulting in limited efficiency of dissolving oxygen in the sewage treatment pool, and the noise of the rolling bubbles is very huge.
- the object of the present invention is to provide an aeration system for a sewage treatment pool, which can force air and sewage to dissolve and has a high oxygen dissolution efficiency.
- the beneficial effects of the present invention are as follows: when the aeration system for the sewage treatment pool is working, the main shaft and the sleeve are inserted into the sewage treatment pool, so that the diffusion tube is immersed in the pool; when the driving mechanism drives the main shaft to rotate at a high speed, since the upper spiral wing and the lower spiral wing on the main shaft rotate in opposite clockwise directions, the upper spiral wing drives the upper air to be pressed downward along the axis inside the sleeve, while the lower spiral wing drives the pool water below to be pressed upward along the axis inside the sleeve; so that a high-pressure environment is formed in the middle of the sleeve, and under this high-pressure environment, the downward-pressed air passes through the spray holes on the sealing plate to form a high-pressure air needle, which directly penetrates into the upward-pressurized pool water.
- FIG. 1 is a schematic diagram of a first embodiment of the aeration system for a sewage treatment tank.
- FIG. 2 is a schematic diagram of a second embodiment of the aeration system for a sewage treatment tank.
- FIG. 3 is a schematic diagram of the structure among the main shaft, the circuit breaker and the sleeve in the embodiment of FIG. 2 .
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- the aeration system for the sewage treatment pool includes a driving mechanism 1, which includes a motor and an acceleration gear set, and drives a main shaft 2 extending downward;
- the main shaft is divided into an upper and lower section, and the upper section and the lower section are respectively provided with an upper spiral wing 31 and a lower spiral wing 32 extending along the main shaft, and the upper spiral wing 31 and the lower spiral wing 32 rotate in opposite clockwise directions;
- the main shaft 2 is also surrounded by a sleeve 4 coaxial with the main shaft, and an upper spiral wing 31 is formed between the inner wall of the sleeve 4 and the upper spiral wing 31.
- the spiral channel forms a lower spiral channel with the lower spiral wing 32; the sleeve 4 is relatively fixed to the shell of the driving mechanism 1, and the upper end of the sleeve 4 has an air inlet 40; inside the sleeve 4, a sealing plate 5 is provided between the upper spiral wing 31 and the lower spiral wing 32, and a spray hole 50 is opened on the sealing plate 5 along the axial direction of the main shaft; the sleeve 4 is laterally connected to more than two diffusers 6 below the sealing plate 5 (Figure 1 is a cross-sectional view, which only illustrates two diffusers 6), and the diffusers 6 are evenly distributed around the main shaft 2.
- the pitch of the upper spiral wing 31 is smaller than the pitch of the lower spiral wing 32; according to this scheme, the downward air pressure can be significantly greater than the upward water pressure, so that the high-pressure gas can pass through the sealing plate 5 more smoothly to form a sharp air needle.
- the sealing plate 5 and the main shaft 2 are fixed to each other; according to this scheme, the high-pressure gas needle can be made to rotate at high speed following the main shaft 2, so that the gas in a section of the gas needle can be distributed to the entire liquid surface below the sealing plate 5 during the rotation process, which fully guarantees the dissolving ability of the liquid for the gas needle and can significantly improve the gas-liquid fusion efficiency.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- FIG. 2 and FIG. 3 show a second embodiment of the present invention, which is different from the first embodiment in that: a breaker is further fixed on the main shaft 2, and the breaker includes shielding plates 71 uniformly distributed in the circumferential direction and the same number as the diffuser 6, and the outer side surface of the shielding plates 71 is an arc surface that fits the inner wall of the sleeve 4; the breaker rotates one circle with the main shaft 2 During the process, each of the shield plates 71 blocks the communication openings 60 between each diffusion tube and the sleeve tube once, and the communication openings 60 between each diffusion tube 6 and the sleeve tube 4 are always blocked and opened at the same time.
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- 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
Description
本发明涉及污水处理系统领域，特别地，是一种用于污水处理池的曝气系统。The invention relates to the field of sewage treatment systems, in particular to an aeration system for a sewage treatment tank.
在污水处理领域，通常需要采用污水处理池，而对于一些需要依靠氧气分解的污染物，需要保障处理池中具有充足的氧气，以促进处理效果。为此，目前通常采用射流曝气机对处理池进行曝气；其基本原理是，采用离心机在池内产生射流，由该射流产生的负压牵引外界的空气，使空气与射流一起进入扩散管内进行混合并排入池内。该种射流曝气机由于单纯靠射流的负压牵引气流，并任由空气和射流在扩散管内自由混合，由于没有强制力的作用，导致混合效率十分有限，大量的空气进入池内后不能快速溶解于水，又以大气泡的形式浮出水面，导致污水处理池溶解氧气的效率有限，而气泡翻滚的噪音却十分巨大。In the field of sewage treatment, sewage treatment pools are usually required. For some pollutants that need to rely on oxygen to decompose, it is necessary to ensure that there is sufficient oxygen in the treatment pool to promote the treatment effect. For this reason, jet aerators are currently usually used to aerate the treatment pool; its basic principle is to use a centrifuge to generate a jet in the pool, and the negative pressure generated by the jet pulls the outside air, so that the air and the jet enter the diffusion tube together for mixing and discharge into the pool. This type of jet aerator relies solely on the negative pressure of the jet to pull the airflow, and allows the air and the jet to mix freely in the diffusion tube. Due to the lack of coercive force, the mixing efficiency is very limited. A large amount of air cannot quickly dissolve in the water after entering the pool, and floats to the surface in the form of large bubbles, resulting in limited efficiency of dissolving oxygen in the sewage treatment pool, and the noise of the rolling bubbles is very huge.
发明内容Summary of the invention
针对上述问题，本发明的目的在于提供一种污水处理池曝气系统，该系统可以将空气和污水强制溶合，具有较高的氧气溶解效率。In view of the above problems, the object of the present invention is to provide an aeration system for a sewage treatment pool, which can force air and sewage to dissolve and has a high oxygen dissolution efficiency.
本发明解决其技术问题所采用的技术方案是：该污水处理池曝气系统包括驱动机构，所述驱动机构驱动一根向下延伸的主轴；所述主轴分为上下两段，且上段和下段上分别制有沿着主轴延伸的上段螺旋翼和下段螺旋翼，所述上段螺旋翼与下段螺旋翼的旋转时针方向相反；所述主轴外部还包围有与主轴同轴的套管，所述套管的内壁与所述上段螺旋翼之间形成上螺旋通道，与所述下段螺旋翼之间形成下螺旋通道；所述套管与所述驱动机构的壳体相对固定，且套管上端具有进气口；所述套管内部，在所述上段螺旋翼与下段螺旋翼之间设有封板，所述封板上沿主轴轴向开设有喷孔；所述套管在所述封板的下方侧向连通有两个以上扩散管，所述扩散管关于所述主轴周向均布。The technical solution adopted by the present invention to solve its technical problems is: the aeration system of the sewage treatment pool includes a driving mechanism, which drives a main shaft extending downward; the main shaft is divided into an upper and lower section, and the upper section and the lower section are respectively provided with an upper spiral wing and a lower spiral wing extending along the main shaft, and the upper spiral wing and the lower spiral wing rotate in opposite clockwise directions; the main shaft is also surrounded by a sleeve coaxial with the main shaft, an upper spiral channel is formed between the inner wall of the sleeve and the upper spiral wing, and a lower spiral channel is formed between the inner wall of the sleeve and the lower spiral wing; the sleeve is relatively fixed to the shell of the driving mechanism, and an air inlet is provided at the upper end of the sleeve; a sealing plate is provided inside the sleeve between the upper spiral wing and the lower spiral wing, and a spray hole is opened on the sealing plate along the axial direction of the main shaft; the sleeve is laterally connected to two or more diffusion tubes below the sealing plate, and the diffusion tubes are evenly distributed around the main shaft.
作为优选，所述驱动机构包括电机或内燃机，以及加速齿轮组。Preferably, the driving mechanism comprises an electric motor or an internal combustion engine, and an acceleration gear set.
作为优选，所述上段螺旋翼的螺距小于下段螺旋翼的螺距。Preferably, the pitch of the upper spiral wing is smaller than the pitch of the lower spiral wing.
作为优选，所述封板与所述主轴相互固定。Preferably, the sealing plate and the main shaft are fixed to each other.
作为优选，所述主轴上还固定一个遮断器，所述遮断器包括周向均布的、数量与所述扩散管相等的遮板，所述遮板的外侧面为与所述套管的内壁相贴合的弧形面；所述遮断器跟随主轴旋转一周的过程中，各块所述遮板分别对各个扩散管与套管的连通口遮断一次，且各扩散管与套管的连通口总是同时被遮断，同时被打开。Preferably, a circuit breaker is also fixed on the main shaft, and the circuit breaker includes shielding plates which are evenly distributed in the circumferential direction and whose number is equal to that of the diffusers, and the outer side surface of the shielding plates is an arc-shaped surface which fits the inner wall of the sleeve; during the process of the circuit breaker rotating one circle following the main shaft, each shielding plate blocks the connecting opening between each diffuser and the sleeve once respectively, and the connecting openings between each diffuser and the sleeve are always blocked and opened at the same time.
本发明的有益效果在于：该污水处理池曝气系统在工作时，将所述主轴、套管插入污水处理池中，使所述扩散管没入池内；当驱动机构驱动主轴高速旋转时，由于主轴上的上段螺旋翼与下段螺旋翼的旋转时针方向相反，因此，上段螺旋翼驱动上部的空气在套管内部沿轴线下压，而下段螺旋翼则驱动下方的池水在套管内部沿轴线上压；使套管中部形成高压环境，在此高压环境下，下压的空气穿过所述封板上的喷孔，形成高压气针，直接刺入上压的池水中，由于压强大，且高压气针的表面积大，得以使空气与液体强制融合，混合效 果优良，此后从套管侧面的扩散管排出，进入池内，且在扩散管中又进一步得到了传统过程的气液融合。The beneficial effects of the present invention are as follows: when the aeration system for the sewage treatment pool is working, the main shaft and the sleeve are inserted into the sewage treatment pool, so that the diffusion tube is immersed in the pool; when the driving mechanism drives the main shaft to rotate at a high speed, since the upper spiral wing and the lower spiral wing on the main shaft rotate in opposite clockwise directions, the upper spiral wing drives the upper air to be pressed downward along the axis inside the sleeve, while the lower spiral wing drives the pool water below to be pressed upward along the axis inside the sleeve; so that a high-pressure environment is formed in the middle of the sleeve, and under this high-pressure environment, the downward-pressed air passes through the spray holes on the sealing plate to form a high-pressure air needle, which directly penetrates into the upward-pressurized pool water. Due to the high pressure and the large surface area of the high-pressure air needle, the air and the liquid are forced to merge, and the mixing effect is strong. The result is excellent, and then it is discharged from the diffusion pipe on the side of the casing and enters the pool, where it further obtains the gas-liquid fusion of the traditional process.
图1是本污水处理池曝气系统的实施例一示意图。FIG. 1 is a schematic diagram of a first embodiment of the aeration system for a sewage treatment tank.
图2是本污水处理池曝气系统的实施例二示意图。FIG. 2 is a schematic diagram of a second embodiment of the aeration system for a sewage treatment tank.
图3是图2实施例中，主轴、遮断器、套管之间的结构示意图。FIG. 3 is a schematic diagram of the structure among the main shaft, the circuit breaker and the sleeve in the embodiment of FIG. 2 .
下面结合附图和实施例对本发明进一步说明：The present invention is further described below in conjunction with the accompanying drawings and embodiments:
实施例一：Embodiment 1:
在图1所示的实施例一中，该污水处理池曝气系统包括驱动机构1，所述驱动机构1包括电机及加速齿轮组，其驱动一根向下延伸的主轴2；所述主轴分为上下两段，且上段和下段上分别制有沿着主轴延伸的上段螺旋翼31和下段螺旋翼32，所述上段螺旋翼31与下段螺旋翼32的旋转时针方向相反；所述主轴2外部还包围有与主轴同轴的套管4，所述套管4的内壁与所述上段螺旋翼31之间形成上螺旋通道，与所述下段螺旋翼32之间形成下螺旋通道；所述套管4与所述驱动机构1的壳体相对固定，且套管4上端具有进气口40；所述套管4内部，在所述上段螺旋翼31与下段螺旋翼32之间设有封板5，所述封板5上沿主轴轴向开设有喷孔50；所述套管4在所述封板5的下方侧向连通有两个以上扩散管6(图1为剖视图，仅示意出两个扩散管6)，所述扩散管6关于所述主轴2周向均布。In the first embodiment shown in FIG. 1 , the aeration system for the sewage treatment pool includes a driving mechanism 1, which includes a motor and an acceleration gear set, and drives a main shaft 2 extending downward; the main shaft is divided into an upper and lower section, and the upper section and the lower section are respectively provided with an upper spiral wing 31 and a lower spiral wing 32 extending along the main shaft, and the upper spiral wing 31 and the lower spiral wing 32 rotate in opposite clockwise directions; the main shaft 2 is also surrounded by a sleeve 4 coaxial with the main shaft, and an upper spiral wing 31 is formed between the inner wall of the sleeve 4 and the upper spiral wing 31. The spiral channel forms a lower spiral channel with the lower spiral wing 32; the sleeve 4 is relatively fixed to the shell of the driving mechanism 1, and the upper end of the sleeve 4 has an air inlet 40; inside the sleeve 4, a sealing plate 5 is provided between the upper spiral wing 31 and the lower spiral wing 32, and a spray hole 50 is opened on the sealing plate 5 along the axial direction of the main shaft; the sleeve 4 is laterally connected to more than two diffusers 6 below the sealing plate 5 (Figure 1 is a cross-sectional view, which only illustrates two diffusers 6), and the diffusers 6 are evenly distributed around the main shaft 2.
上述污水处理池曝气系统在工作时，将所述主轴2、套管4插入污水处理池中，使所述扩散管6处于图1中水平虚线所示的处理池液面以下；当驱动机构1驱动主轴2高速旋转时，由于主轴2上的上段螺旋翼31与下段螺旋翼32的旋转时针方向相反，因此，上段螺旋翼31驱动上部的空气在套管4内部沿轴线下压，而下段螺旋翼32则驱动下方的池水在套管4内部沿轴线上压；使套管4中部形成高压环境，在此高压环境下，下压的空气穿过所述封板5上的喷孔50，形成高压气针，直接刺入上压的池水中，由于压强大，且高压气针的表面积大，得以使空气与液体强制融合，混合效果优良，此后从套管侧面的扩散管6排出，进入池内，且在扩散管中又进一步得到了传统过程的气液融合。其中，空气、水体、气液混合体的流向如图1中箭头所示意。When the above-mentioned sewage treatment pool aeration system is working, the main shaft 2 and the sleeve 4 are inserted into the sewage treatment pool, so that the diffusion tube 6 is below the liquid level of the treatment pool shown by the horizontal dotted line in Figure 1; when the driving mechanism 1 drives the main shaft 2 to rotate at high speed, since the upper spiral wing 31 on the main shaft 2 rotates clockwise in the opposite direction to the lower spiral wing 32, the upper spiral wing 31 drives the upper air to press down along the axis inside the sleeve 4, while the lower spiral wing 32 drives the pool water below to press up along the axis inside the sleeve 4; so that a high-pressure environment is formed in the middle of the sleeve 4, and under this high-pressure environment, the downwardly pressed air passes through the spray hole 50 on the sealing plate 5 to form a high-pressure air needle, which directly penetrates into the upwardly pressed pool water. Due to the high pressure and the large surface area of the high-pressure air needle, the air and liquid are forced to merge, and the mixing effect is excellent. Thereafter, the air is discharged from the diffusion tube 6 on the side of the sleeve and enters the pool, and the gas-liquid fusion of the traditional process is further obtained in the diffusion tube. Among them, the flow direction of air, water, and gas-liquid mixture is shown by the arrow in Figure 1.
本实施例中，所述上段螺旋翼31的螺距小于下段螺旋翼32的螺距；按此方案，可使下压的气压明显大于上行的水压，使高压气体可以更顺利地穿过所述封板5，形成锐利的气针。In this embodiment, the pitch of the upper spiral wing 31 is smaller than the pitch of the lower spiral wing 32; according to this scheme, the downward air pressure can be significantly greater than the upward water pressure, so that the high-pressure gas can pass through the sealing plate 5 more smoothly to form a sharp air needle.
另外，使所述封板5与所述主轴2相互固定；按此方案，可以使所述高压气针跟随主轴2高速旋转，则对于一段气针中的气体，可以在旋转过程中分摊给封板5下方的整个液面，充分保障了液体对于气针的溶解能力，可使气液融合效率明显提高。In addition, the sealing plate 5 and the main shaft 2 are fixed to each other; according to this scheme, the high-pressure gas needle can be made to rotate at high speed following the main shaft 2, so that the gas in a section of the gas needle can be distributed to the entire liquid surface below the sealing plate 5 during the rotation process, which fully guarantees the dissolving ability of the liquid for the gas needle and can significantly improve the gas-liquid fusion efficiency.
实施例二：Embodiment 2:
图2、图3所示为本发明的实施例二，其与实施例一的不同之处在于：所述主轴2上还固定一个遮断器，所述遮断器包括周向均布的、数量与所述扩散管6相等的遮板71，所述遮板71的外侧面为与所述套管4的内壁相贴合的弧形面；所述遮断器跟随主轴2旋转一周的 过程中，各块所述遮板71分别对各个扩散管与套管的连通口60遮断一次，且各扩散管6与套管4的连通口60总是同时被遮断，同时被打开。按此方案，当各连通口60被同时遮断时，套管4中部的压强急剧升高，可使气体轻易溶解入水体内，随后，连通口60打开，则充分混合后的气液混合体通过扩散管6向外排出。FIG. 2 and FIG. 3 show a second embodiment of the present invention, which is different from the first embodiment in that: a breaker is further fixed on the main shaft 2, and the breaker includes shielding plates 71 uniformly distributed in the circumferential direction and the same number as the diffuser 6, and the outer side surface of the shielding plates 71 is an arc surface that fits the inner wall of the sleeve 4; the breaker rotates one circle with the main shaft 2 During the process, each of the shield plates 71 blocks the communication openings 60 between each diffusion tube and the sleeve tube once, and the communication openings 60 between each diffusion tube 6 and the sleeve tube 4 are always blocked and opened at the same time. According to this scheme, when each of the communication openings 60 is blocked at the same time, the pressure in the middle of the sleeve tube 4 rises sharply, which allows the gas to easily dissolve into the water body. Subsequently, the communication openings 60 are opened, and the fully mixed gas-liquid mixture is discharged to the outside through the diffusion tube 6.
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2023/125627 WO2025081464A1 (en) | 2023-10-20 | 2023-10-20 | Aeration system for wastewater treatment tank |
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2023/125627 WO2025081464A1 (en) | 2023-10-20 | 2023-10-20 | Aeration system for wastewater treatment tank |
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2023
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