Rotational flow efficient aeration device

Abstract

The utility model discloses a rotational flow efficient aeration device which mainly comprises a Roots blower 1, an aeration header pipe 2, an aeration assembly 3, a rotational flow aerator 4, an aerobic biochemical pool 5, a dissolved oxygen detector 6 and a control module 7, according to the aeration device, compressed air pressurized by a Roots blower passes through an aeration main pipe 2 and an aeration assembly 3 and is conveyed to a rotational flow aerator 4, the compressed air enters sewage in an aerobic biochemical pool in a rotational flow form, and the compressed air and the sewage are subjected to rotational flow mixing to form a large number of ultra-small microbubbles; oxygen in air is in full contact with harmful substances in sewage, so that the device has the advantages of high oxygen utilization rate and no-dead-angle aeration, realizes the purpose of full contact of oxygen and sewage, has the advantages of large oxygen contact area and no dead angle compared with a floating head type aerator and an immersed tube type aerator which are commonly used at present, and realizes the purposes of convenience in installation and energy conservation.

Description

Technical Field

[0001] The utility model relates to the technical field of aerobic aeration for sewage treatment, and directly relates to a cyclone high-efficiency aeration device. Background Art

[0002] At present, sewage treatment mainly uses activated sludge in the sewage treatment system to degrade harmful substances in sewage. Aerobic sludge bacteria use free oxygen in water to digest and degrade organic matter. The free oxygen content in sewage restricts the ability of sludge bacteria to digest and degrade harmful substances. It is very necessary to study a cyclone high-efficiency aeration device to increase the oxygen content in sewage. Summary of the invention

[0003] The purpose of this utility model is to study a cyclone high-efficiency aeration device to solve the problem of insufficient oxygen content of active bacteria in water treatment sludge. The technical solution is:

[0004] The utility model discloses a cyclone high-efficiency aeration device, which mainly comprises a Roots blower 1, an aeration main pipe 2, an aeration component 3, a cyclone aerator 4, an aerobic biochemical pool 5, a dissolved oxygen detector 6, and a control module 7. The Roots blower 1 is connected to the aeration main pipe 2, the aeration main pipe 2 is connected to the aeration component 3, and the aeration component 3 is connected to the cyclone aerator 4 in sequence. The dissolved oxygen detector 6 is installed on the wall of the aerobic biochemical pool 5, and the dissolved oxygen detector 6 and the control module 7 are electrically connected to the Roots blower 1.

[0005] The utility model relates to the use of an aeration device for removing organic matter by using an activated sludge method in a sewage treatment system. It is directly related to the removal rate of organic pollutants in an aerobic pool in an A / O treatment system, and the removal rate of organic matter is directly related to the oxygenation capacity and oxygen conversion rate of the aeration device. The use of this high-efficiency aeration device is to compress air into the aeration main pipe through an aeration fan, and then enter the cyclone aerator through each branch pipe. The cyclone aerator can make high-speed gas collide with sewage, and a large number of micro bubbles are generated after cyclone cutting and dissolved in water, ensuring that the dissolved oxygen in the sewage is 2-4 mg / L, and the oxygen utilization rate is more than 20%. After the water body with an amount of more than 1.3 times the amount of air is sucked under the action of the gas, the water flow circulates up and down in the pool, improving the efficiency of microbial metabolism.

[0006] The utility model is an aerobic pool with an aeration main pipe laid in the middle and aeration branches evenly distributed on both sides. The cyclone aerator is installed in a hanging manner. When the original system is operating normally, the new aerator and the connecting pipes are sunk to the bottom of the pool. Then, the branch pipes are connected to the pipes of the suspended aerator exposed to the water surface at the top of the pool and fixed with a bracket. The bottom of the aerator is about 300mm away from the bottom of the pool. The overall material of the cyclone aerator is ultra-high molecular weight polyethylene + polytetrafluoroethylene, which has the characteristics of anti-aging, anti-corrosion and long service life. The aerators are evenly arranged in the aerobic pool, with an interval of 2-3 meters. The average service area is 4㎡, and the ventilation volume of a single aerator is 0.4-0.6m 3 / min. According to the actual water volume, water quality load and dissolved oxygen content of sewage, the control module adjusts the air volume of the Roots variable frequency fan to ensure that the dissolved oxygen in the sewage is 2-4 mg / L, realizing fine management of the fan air supply, improving air utilization, reducing power consumption, and increasing oxygen conversion rate, achieving efficient aeration of the aerobic biochemical pool, and making the activated sludge run efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Attached Figure 1 The utility model is shown in the structural diagram.

[0008] Attached Figure 1 Marking Description:

[0009] In the figure: 1. Roots blower, 2. Aeration main pipe, 3. Aeration component, 4. Cyclone aerator, 5. Aerobic biochemical tank, 6. Dissolved oxygen detector, 7. Control module. DETAILED DESCRIPTION

[0010] Now combined with the attached Figure 1 The utility model is further described.

[0011] Aerobic activated sludge process is an important sewage treatment method. It provides sufficient oxygen for the growth of aerobic sludge bacteria in the aerobic biochemical pool 5 through aeration. The aerobic sludge bacteria use the free oxygen in the water to digest and degrade organic matter.

[0012] The traditional aeration method is to lay an aeration pipeline above the aeration tank and install an aerator at the bottom of the aeration tank. It is inconvenient to install different types of aeration tanks, the aeration device has too single function, the aeration volume is difficult to control during use and it is not convenient for maintenance. The oxygen inside the aerobic biochemical tank 5 is not evenly mixed with the microorganisms in the sewage, the sewage treatment process is inefficient, and it has certain limitations, which affects the use effect of the aeration device.

[0013] The oxygen exchange rate of the traditional aeration pipe assembly is not high during the gas-liquid exchange process, and the service area of ​​a single aerator is small. The new type of aeration pipe 2 is laid in the middle of the aerobic biochemical pool 5, and the aeration branches are evenly distributed on both sides. The cyclone aerator 4 is installed at the bottom of the aerobic biochemical pool 5 in a hanging manner. The cyclone aerator 4 has the characteristics of anti-aging, anti-corrosion and long service life.

[0014] The aerators are evenly distributed in the aerobic biochemical pool 5, which has the advantages of even mixing of oxygen and microorganisms in sewage and high efficiency of sewage treatment process.

[0015] The dissolved oxygen detector 6 and the control module 7 are electrically connected to the Roots blower 1. The air volume of the Roots blower 1 is adjusted according to the dissolved oxygen content of the sewage in the aerobic biochemical pool 5 to ensure that the dissolved oxygen in the sewage is between 2-4 mg / L to achieve the optimal dissolved oxygen content.

Claims

1. A cyclone high-efficiency aeration device, mainly comprising a Roots blower (1), an aeration main pipe (2), an aeration component (3), a cyclone aerator (4), an aerobic biochemical tank (5), a dissolved oxygen detector (6), and a control module (7), wherein: The Roots blower (1) and the aeration main pipe (2), the aeration main pipe (2) and the aeration assembly (3), and the aeration assembly (3) and the cyclone aerator (4) are connected in sequence; a dissolved oxygen detector (6) is installed on the wall of the aerobic biochemical pool (5); and the dissolved oxygen detector (6) and the control module (7) are electrically connected to the Roots blower (1).

2. A cyclone high-efficiency aeration device according to claim 1, characterized in that: The cyclone aerator (4) and the connecting pipeline are sunk to the bottom of the aerobic biochemical pool (5). The branch pipeline at the top of the pool is connected to the pipeline of the suspended aerator exposed above the water surface and fixed with a bracket. The bottom of the aerator is about 300 mm away from the bottom of the pool.

Images