Magnetized oxygen-rich nitrogen-rich microporous aerator with self-reducing flow rate

Abstract

This invention discloses a self-reducing flow rate magnetized oxygen- and nitrogen-enriched microporous aeration device, belonging to the field of water treatment technology. The device mainly consists of an air pump, an air inlet, a buffer cylinder, a magnetized nitrogen-oxygen separation device, and a microporous aeration disc. Its core lies in utilizing the difference in the effect of a magnetic field on gas molecules to achieve oxygen-nitrogen separation: air is decelerated and stirred by a slow-moving fan inside the buffer cylinder before entering the underwater magnetization device. The device employs a Halbach array of magnetic rings arranged in conjunction with a U-shaped inner liner to form a high-gradient magnetic field and swirling airflow, prolonging the time the gas is magnetically acted upon. This causes oxygen to accumulate around the magnetic poles, while nitrogen moves towards the pipe wall and enters the hollow floating disc through the nitrogen pipe, providing buoyancy for the device. A specially designed oxygen separation intake port draws in the enriched oxygen, which is then released through a one-way baffle into the microporous aeration disc. This invention significantly improves oxygen transfer efficiency and reduces energy consumption through underwater magnetization to stabilize temperature and structural innovation to reduce flow rate, solving the problems of low efficiency and equipment corrosion in traditional aerators.

Description

Technical Field

[0001] This invention belongs to the technical field of purification and treatment of domestic sewage and various industrial wastewater. Background Technology

[0002] Aerators, as core equipment in wastewater treatment, are widely used in urban wastewater treatment plants, industrial wastewater treatment, and landscape water body management, with different types of aerators catering to different needs. Currently, aeration equipment can be mainly divided into microporous aerators, rotary disc aerators, inverted umbrella aerators, blower aerators, mechanical agitators, and jet aerators. However, aerators still exhibit several technical problems. Oxygen transfer efficiency is significantly limited; traditional aerators maintain an oxygen utilization rate of only 15% to 20%, while the efficiency of cyclone aerators drops sharply to below 15% when the water depth is less than 5 meters, leading to serious energy waste. The problem of excessively high energy consumption is also extremely prominent, with aeration systems accounting for 50% to 70% of the total energy consumption of wastewater treatment plants. Over-aeration, equipment aging, and system malfunctions further exacerbate the energy burden. Therefore, it is worth considering improving aerator efficiency by optimizing the aerator structure and utilizing byproducts to generate revenue. Summary of the Invention

[0003] To address the efficiency problem of aerators, this invention proposes a magnetized oxygen- and nitrogen-enriched microporous aerator with self-reducing flow rate. The aerator consists of an air pump 1, an air inlet device 2, a slow-flow cylinder 3, a slow-speed fan 4, a base 5, a base floating plate connector 6, a hollow floating plate 7, a nitrogen conduit 8, a gas conduit 9, a magnetized nitrogen-oxygen separation device 10, an aeration pipe 11, a one-way air guide valve 12, and a microporous aeration disc 13.

[0004] The air pump 1 is installed above the air intake device 2. The air intake device 2 is provided with several air intake holes to draw in outside air and send it into the air buffer 3 below. After passing through the funnel-shaped air buffer, the air enters the gas duct 9 located below the air buffer 3. The gas duct 9 is covered with a floating base 5. The outer ring of the floating base 5 is connected to the hollow floating plate 7 through the base floating plate connector 6.

[0005] Below the gas conduit 9, there are multiple curved branch gas conduits, and each branch gas conduit is connected to a magnetized nitrogen-oxygen separation device 10 at its end. The magnetized nitrogen-oxygen separation device 10 is arranged in a horizontal direction.

[0006] The magnetized nitrogen-oxygen separator 10 includes a magnetic ring string 14, a U-shaped inner liner 15, and an oxygen separation inlet 16. The U-shaped inner liner 15 is a tubular structure formed by connecting several circular rings with a U-shaped cross-section that is high at both ends and low in the middle. This structure can promote the swirling and reciprocating motion of gas, further increasing the time that the gas is subjected to the magnetic field. Combined with the intermittent aeration mode, it improves efficiency and saves energy. The magnetic ring string 14 is set on the central axis of the U-shaped inner liner 15 and is formed by connecting several circular rings made of magnetic material. The oxygen separation inlet 16 is located near the magnetic ring string 14 and installed at the end of the aeration pipe 11. The other end of the aeration pipe 11 is connected to the microporous aeration disc 13. The oxygen-enriched air enters the microporous aeration disc 13 through the aeration pipe 11, and after passing through the air holes, it forms bubbles that burst in the water and release oxygen-enriched gas, achieving efficient aeration. The magnetized nitrogen-oxygen separator 10 discharges the separated gas through a nitrogen conduit 8 set on the wall of the U-shaped inner liner 15.

[0007] Preferably, the upper part of the slow-air cylinder 3 is a hollow frustum shape, the middle part is equipped with a slow-speed fan 4, and the lower part is funnel-shaped. After the air passes through the frustum-shaped slow-air cylinder, it drives the slow-speed fan 4 to rotate. The slow-speed fan 4 not only slows down the gas flow rate but also plays a stirring role, which makes the subsequent magnetization separation step more thorough.

[0008] Preferably, the front and rear parts of the "U"-shaped inner liner 15 have an inward convex height approximately twice that of the middle inward convex height.

[0009] Preferably, the oxygen separation intake 16 is composed of two U-shaped arcs, with the intake between the two U-shaped arcs. The width of the intake is the same as that of the magnetic ring and is opposite to it. After the gas passes through the magnetized nitrogen-oxygen separation device, the nitrogen flows away from the magnetic pole and approaches the tube wall, while the oxygen approaches the magnetic pole. This ensures that the separated oxygen gathered around the magnetic ring is fully absorbed.

[0010] Preferably, the gas discharged from the nitrogen conduit 8 is connected to the hollow floating disk 7. When the hollow floating disk 7 is filled with gas, it overflows and is discharged into the atmosphere through the slits 17 on its upper surface. Most of the separated gas is nitrogen, which, due to its lower density than air, is used to fill the floating disk and increase the buoyancy of the device.

[0011] Preferably, the magnetic rings in the magnetic ring string 14 are arranged in a Halbach array, which reduces weight and achieves localized lightweighting of the device.

[0012] Preferably, a one-way air guide valve 12 is provided at the port where the aeration pipe 11 connects to the microporous aeration disc 13. The one-way air guide valve 12 opens to allow air to pass through when the air pressure inside the chamber is greater than the water pressure outside the plate, and closes the baffle when the internal air pressure is less than the water pressure, thus preventing backflow of water when intermittent aeration is used.

[0013] Preferably, the air outlet of the microporous aeration disc 13 is arranged downwards.

[0014] The beneficial effects of this invention are:

[0015] 1. The slow-speed fan in the slow-speed air cylinder slows down the gas flow rate and agitates the air. The oxygen enrichment device uses an innovative wave-shaped inner liner. The front and rear sections have an inward convex height that is about twice that of the middle section, forming a concave gas barrier. This promotes the gas to swirl and flow back in the magnetization cylinder, effectively slowing down the gas flow rate and making the magnetization more thorough.

[0016] 2. Intermittent aeration fully utilizes the swirling airflow formed by the "U"-shaped inner liner, ensuring thorough magnetization and separation of each wave of air.

[0017] 3. Compared to most aeration devices that place the magnetization device above the water surface, this product creatively places the magnetization device and the main air guiding structure underwater, taking advantage of the high specific heat capacity of water to maintain a relatively stable magnetization temperature and improve the stability of the device's magnetization efficiency.

[0018] 4. A creative approach utilizes a Helbeck array arrangement of hollow magnetic rings to increase the contact area, creating a high-gradient magnetic field and forming a dual-channel magnetized separation system with the magnetic rings as the main component. The advantages include increased contact area between the magnetic poles and air, improving oxygen separation efficiency. Compared to solid magnetic poles, it increases surface area while reducing weight, resulting in a lighter device and energy savings.

[0019] 5. The separated nitrogen gas is filled into the hollow floating disk. Since the density of nitrogen gas is lower than that of air, it provides buoyancy for the device after being filled into the floating disk and is recycled. When the nitrogen gas fills the hollow floating disk, it overflows and is discharged into the atmosphere through the fine holes on the upper surface.

[0020] 6. A one-way air guide baffle is added to the end of the aeration pipe. It is opened and closed by the force of air pressure to prevent water from flowing back into the magnetic ring device and causing corrosion. Attached Figure Description

[0021] Figure 1 It is a line graph of the experimental results;

[0022] Figure 2 This is a perspective view of the entire device;

[0023] Figure 3 This is a schematic diagram of a slow-speed fan;

[0024] Figure 4 This is a cross-sectional view of a magnetized oxygen-enriching device;

[0025] Figure 5 This is a schematic diagram of a U-shaped oxygen separation intake port;

[0026] Figure 6 This is a schematic diagram of a one-way airflow baffle;

[0027] Figure 7 This is a schematic diagram of a microporous aeration disc;

[0028] Figure 8 This is a schematic diagram of a hollow floating roof. Detailed Implementation

[0029] The technical solution of the present invention will be further explained and described below with reference to specific embodiments.

[0030] This invention first explores the principles.

[0031] At a constant room temperature of 27 degrees Celsius, air at three different flow rates was passed through two magnetic poles of 5 cm and 10 cm in length in experimental groups, and a blank control group without magnetic poles. The experiment lasted for 1 minute in each group. The measured data are shown in Table 1, with dissolved oxygen concentration in mg / L.

[0032] Table 1

[0033] Table 1 shows the average dissolved oxygen in 100ml of water after aeration at 27℃, with different magnetic pole lengths and different gas flow rates via a blower, for a 1-minute exposure time. Air was introduced into 100ml of pure water for 1 minute via a blower, with the compressed air flow rate from the blower adjusted to three speeds (1.2L / min, 1.8L / min, and 2.4L / min). Figure 1 The three curves correspond to the average dissolved oxygen content data of nine groups of water after 100ml of pure water was introduced at room temperature (27℃) and the air at three different flow rates was magnetized by magnetic fields of different lengths.

[0034] Experiments have shown that when air with a magnetic field is introduced into water, the dissolved oxygen content in the water is higher than that in the blank control group where untreated air is directly introduced into the water for aeration. As the length of the magnetic field increases, that is, the longer the interaction time between the gas and the magnetic field, the more obvious the separation effect, and the higher the dissolved oxygen content in the pure water.

[0035] like Figure 2 As shown, a magnetized oxygen- and nitrogen-enriched microporous aerator with self-reducing flow rate is provided. The aerator consists of an air pump 1, an air inlet device 2, a slow air cylinder 3, a slow speed fan 4, a base 5, a base floating plate connector 6, a hollow floating plate 7, a nitrogen conduit 8, a gas conduit 9, a magnetized nitrogen-oxygen separation device 10, an aeration pipe 11, a one-way air guide valve 12, and a microporous aeration disc 13.

[0036] The air pump 1 is installed above the air intake device 2. The air intake device 2 is provided with several air intake holes to draw in outside air and send it into the air buffer 3 below. After passing through the funnel-shaped air buffer, the air enters the gas duct 9 located below the air buffer 3. The gas duct 9 is covered with a floating base 5. The outer ring of the floating base 5 is connected to the hollow floating plate 7 through the base floating plate connector 6.

[0037] Below the gas conduit 9, there are multiple curved branch gas conduits, and each branch gas conduit is connected to a magnetized nitrogen-oxygen separation device 10 at its end. The magnetized nitrogen-oxygen separation device 10 is arranged in a horizontal direction.

[0038] The magnetized nitrogen-oxygen separator 10 includes a magnetic ring string 14, a U-shaped inner liner 15, and an oxygen separation inlet 16. The U-shaped inner liner 15 is a tubular structure formed by connecting several circular rings with a U-shaped cross-section that is high at both ends and low in the middle. This structure can promote the swirling and reciprocating motion of gas, further increasing the time that the gas is subjected to the magnetic field. Combined with the intermittent aeration mode, it improves efficiency and saves energy. The magnetic ring string 14 is set on the central axis of the U-shaped inner liner 15 and is formed by connecting several circular rings made of magnetic material. The oxygen separation inlet 16 is located near the magnetic ring string 14 and installed at the end of the aeration pipe 11. The other end of the aeration pipe 11 is connected to the microporous aeration disc 13. The oxygen-enriched air enters the microporous aeration disc 13 through the aeration pipe 11, and after passing through the air holes, it forms bubbles that burst in the water and release oxygen-enriched gas, achieving efficient aeration. The magnetized nitrogen-oxygen separator 10 discharges the separated gas through a nitrogen conduit 8 set on the wall of the U-shaped inner liner 15.

[0039] In this embodiment, the upper part of the slow-air cylinder 3 is a hollow frustum shape, the middle part is equipped with a slow-speed fan 4, and the lower part is funnel-shaped. After the air passes through the frustum-shaped slow-air cylinder, it drives the slow-speed fan 4 to rotate. The slow-speed fan 4 not only slows down the gas flow rate but also plays a stirring role, which makes the subsequent magnetization separation step more thorough.

[0040] In this embodiment, the front and rear parts of the "U"-shaped inner liner 15 have an inward convex height that is approximately twice the height of the middle inward convex height.

[0041] In this embodiment, the oxygen separation intake 16 is composed of two U-shaped arcs, with the intake between the two U-shaped arcs. The width of the intake is the same as that of the magnetic ring and is opposite to it. After the gas passes through the magnetized nitrogen-oxygen separation device, the nitrogen flows away from the magnetic pole and approaches the tube wall, while the oxygen approaches the magnetic pole. This ensures that the separated oxygen that accumulates around the magnetic ring is fully absorbed.

[0042] In this embodiment, the gas discharged from the nitrogen conduit 8 is connected to the hollow floating disk 7. When the hollow floating disk 7 is filled with gas, it overflows and is discharged into the atmosphere through the slit 17 on its upper surface. Most of the separated gas is nitrogen, which, due to its lower density than air, is used to fill the floating disk and increase the buoyancy of the device.

[0043] In this embodiment, the magnetic rings in the magnetic ring string 14 are arranged in a Halbach array, which reduces weight and achieves local device lightweighting.

[0044] In this embodiment, a one-way aeration baffle 9 is provided at the port where the aeration pipe 11 connects to the microporous aeration disc 13. The one-way air valve 12 opens to allow airflow when the air pressure inside the chamber is greater than the water pressure outside the disc, and closes when the internal air pressure is less than the water pressure, thus preventing backflow of water when intermittent aeration is used.

[0045] In this embodiment, the air outlet of the microporous aeration disc 13 is arranged downwards.

[0046] The device provided by this invention is based on the principle obtained through principle exploration. It reduces the gas flow rate in the magnetic field, increases the time the gas acts in the magnetic field, improves the nitrogen-oxygen separation rate, and ultimately improves the aeration effect.

Claims

1. A magnetized oxygen- and nitrogen-enriched microporous aerator with self-reducing flow rate, characterized in that, The aerator consists of an air pump (1), an air inlet device (2), an air buffer cylinder (3), a floating base (5), a base floating connection (6), a hollow floating disc (7), a nitrogen conduit (8), a gas conduit (9), a magnetized nitrogen-oxygen separation device (10), an aeration pipe (11), and a microporous aeration disc (13). An air pump (1) is installed above an air intake device (2). The air intake device (2) has several air intake holes, which draw in outside air and send it into the air buffer cylinder (3) below. After passing through the funnel-shaped air buffer cylinder, the air enters the gas duct (9) located below the air buffer cylinder (3). The gas duct (9) is covered with a floating base (5). The outer ring of the floating base (5) is connected to a hollow floating plate (7) through a base floating plate connector (6). Below the gas conduit (9) are multiple curved branch gas conduits, and each branch gas conduit is connected to a magnetized nitrogen-oxygen separation device (10) at its end. The magnetized nitrogen-oxygen separation device (10) is arranged in a horizontal direction. The magnetized nitrogen-oxygen separator (10) includes a magnetic ring string (14), a U-shaped inner liner (15), and an oxygen separation inlet (16). The U-shaped inner liner (15) is a tubular structure formed by connecting several circular rings with a U-shaped cross-section that is high at both ends and low in the middle. The magnetic ring string (14) is located on the central axis of the U-shaped inner liner (15) and is formed by connecting several circular rings made of magnetic material through interlocking. The oxygen separation inlet (16) is located near the magnetic ring string (14) and installed at the end of the aeration pipe (11). The other end of the aeration pipe (11) is connected to the microporous aeration disc (13). The oxygen-enriched air enters the microporous aeration disc (13) through the aeration pipe (11), and after passing through the air holes, it forms bubbles that burst in the water to release the oxygen-enriched gas. The magnetized nitrogen-oxygen separator (10) discharges the separated gas through a nitrogen conduit (8) set on the tube wall of the U-shaped inner liner (15).

2. The magnetized oxygen- and nitrogen-enriched microporous aerator with self-reducing flow rate as described in claim 1, characterized in that, The upper part of the air vent (3) is a frustum-shaped space, the middle part is equipped with a slow-speed fan (4), and the lower part is funnel-shaped. After the air passes through the frustum-shaped air vent, it drives the slow-speed fan (4) to rotate.

3. The magnetized oxygen- and nitrogen-enriched microporous aerator with self-reducing flow rate according to claim 1, characterized in that, The front and rear parts of the concave inner liner (15) have an inward convex height that is approximately twice the height of the middle inward convex height.

4. The magnetized oxygen- and nitrogen-enriched microporous aerator with self-reducing flow rate according to claim 1, characterized in that, The oxygen separation intake port (16) is composed of two U-shaped arcs, with the intake port located between the two U-shaped arcs. The width of the intake port is the same as that of the magnetic ring and is opposite to it.

5. The magnetized oxygen- and nitrogen-enriched microporous aerator with self-reducing flow rate according to claim 1, characterized in that, The gas discharged from the nitrogen conduit (8) is connected to the hollow floating disk (7). When the hollow floating disk (7) is filled with gas, it overflows and is discharged into the atmosphere through the slit (17) on its upper surface.

6. The magnetized oxygen- and nitrogen-enriched microporous aerator with self-reducing flow rate according to claim 1, characterized in that, The magnetic rings in the magnetic ring string (14) are arranged in a Halbach array.

7. The magnetized oxygen- and nitrogen-enriched microporous aerator with self-reducing flow rate according to claim 1, characterized in that, A one-way air inlet valve (12) is provided at the port where the aeration pipe (11) connects to the microporous aeration disc (13).

8. The magnetized oxygen- and nitrogen-enriched microporous aerator with self-reducing flow rate according to claim 1, characterized in that, The air outlet of the microporous aeration disc (13) is arranged downwards.

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