Aeration device for built-in ultrafiltration curtain type membrane module

Abstract

The utility model relates to an aeration device for a built-in ultrafiltration curtain type membrane component, in particular to the technical field of water treatment membrane components. The aeration device comprises the connecting pipe, the aeration pipe, the air inlet, the sludge discharge port, the first membrane and the second membrane, air is sprayed upwards in an inclined manner at 45 degrees through the aeration holes, so that the air pressure of the whole aeration device is more uniform, bubbles are sprayed upwards in an inclined manner, rotational flow is formed to wash the surfaces of membrane wires, and the shearing force is enhanced; each row comprises a plurality of aeration holes which are distributed at equal intervals, and the two rows of aeration holes are distributed in a relatively staggered manner, so that a wide bubble coverage range and no dead angle are ensured, pollutants entering the pipe are discharged by arranging the sludge discharge port, the aeration pipe is kept unobstructed, and the aeration device is more stable and efficient during production and use.

Description

Technical Field

[0001] This utility model relates to the field of water treatment membrane module technology, and in particular to an aeration device for a built-in ultrafiltration curtain membrane module. Background Technology

[0002] When treating high organic leachate, the sludge concentration in the biological treatment tank often needs to be maintained at 10g / L-25g / L. Conventional built-in ultrafiltration curtain membrane aeration devices are usually closed-type, multi-branch aeration devices. The aeration holes of this type of aeration device are distributed in a single way, and the gas scouring range is limited, which can easily lead to local sludge deposition. In addition, there is a lack of sludge discharge port. In this environment, the bottom aeration holes are often blocked, and no air enters the tank to shake the ultrafiltration curtain membrane, which in turn causes the ultrafiltration curtain membrane fibers to clump together and fail to produce water. Utility Model Content

[0003] (1) Technical solution

[0004] To solve the above-mentioned technical problems, this utility model provides an aeration device for an internal ultrafiltration curtain membrane module, including a connecting pipe, an aeration pipe, an air inlet, a sludge discharge outlet, a first membrane, and a second membrane. There are two connecting pipes arranged in parallel left and right. Several aeration pipes are horizontally connected between the two connecting pipes. Each aeration pipe has an aeration hole on both sides. The line connecting the center of the aeration hole and the central axis of the aeration pipe forms a 45° angle with the vertical direction. One end of one connecting pipe has an air inlet, and the other end of the other connecting pipe has a sludge discharge outlet. The first membrane is inclined at the air inlet end of the aeration pipe near the air inlet, and the second membrane is inclined at the air outlet end of the aeration pipe near the sludge discharge outlet.

[0005] Preferably, each side of the aeration pipe is provided with two rows of aeration holes, each row containing a number of aeration holes that are equidistantly distributed, and the two rows of aeration holes are arranged in a relatively staggered manner.

[0006] Preferably, each of the aeration pipes and the connecting pipes is provided with a connector.

[0007] Preferably, the lower end of the first diaphragm is inclined towards the air inlet end of the aeration pipe near the air inlet, and the inclination angle is 45°.

[0008] Preferably, the upper end of the second diaphragm is inclined towards the air outlet of the aeration pipe near the sludge discharge port at an angle of 45°.

[0009] (2) Beneficial effects

[0010] This invention provides an aeration device for a built-in ultrafiltration curtain membrane module. Compared with the prior art, this invention has the following advantages:

[0011] 1. The air is sprayed upwards at a 45° angle through the aeration holes, making the air pressure of the entire aeration device more uniform. This causes the bubbles to spray upwards at a slant, forming a swirling flow that washes over the membrane fiber surface and enhances the shear force.

[0012] 2. Two rows of aeration holes are provided on each side of the aeration pipe. Each row contains several aeration holes that are equidistantly distributed. The aeration holes in the two rows are arranged in a staggered manner to ensure that the bubble coverage is wide and there are no dead corners.

[0013] 3. The first diaphragm, which is set at an angle, guides the airflow to be evenly distributed to each aeration pipe to avoid excessive air volume in the front aeration pipe. The second diaphragm, which is set at an angle, uses the inertia of the airflow to guide the sludge particles to the sludge discharge port to prevent sludge retention.

[0014] 4. By setting up a sludge discharge port to discharge pollutants entering the pipe, the aeration pipe is kept unobstructed, making the aeration device more stable and efficient during production. Attached Figure Description

[0015] Figure 1 This is a top view of the present invention.

[0016] Figure 2 This is a side view of the present invention.

[0017] The attached diagram is labeled as follows: 1-connecting pipe, 2-aeration pipe, 21-aeration hole, 3-air inlet, 4-sludge discharge port, 5-first diaphragm, 6-second diaphragm. Detailed Implementation

[0018] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1 , 2 As shown, the aeration device for a built-in ultrafiltration curtain membrane module of this utility model includes a connecting pipe 1, an aeration pipe 2, an air inlet 3, a sludge discharge outlet 4, a first membrane 5, and a second membrane 6. There are two connecting pipes 1 arranged parallel to each other. Several aeration pipes 2 are horizontally connected between the two connecting pipes 1. Each aeration pipe 2 has aeration holes 21 on both sides. The line connecting the center of the aeration hole 21 to the central axis of the aeration pipe 2 forms a 45° angle with the vertical direction, causing bubbles to spray obliquely upwards, forming a swirling flow that washes the membrane surface and enhances shear force. One end of one connecting pipe 1 has an air inlet 3, and the other end of the other connecting pipe 1 has a sludge discharge outlet 4. The sludge discharge outlet 4 can be equipped with a valve for periodic sludge discharge. The first membrane 5 is inclinedly arranged at the air inlet end of the aeration pipe 2 near the air inlet 3, and the second membrane 6 is inclinedly arranged at the air outlet end of the aeration pipe 2 near the sludge discharge outlet 4.

[0020] The aeration pipe 2 has two rows of aeration holes 21 on each side. Each row contains a number of aeration holes 21 that are equidistantly distributed. The two rows of aeration holes 21 are arranged in a staggered manner to ensure that the bubble coverage is wide and there are no dead corners.

[0021] Each aeration pipe 2 is equipped with a connector (such as a flange or threaded joint) at the connection point with the connecting pipe 1 for easy disassembly and maintenance. The lower end of the first diaphragm 5 is inclined at a 45° angle towards the air inlet end of the aeration pipe 2 near the air inlet 3, guiding the airflow to be evenly distributed to each aeration pipe 2 and avoiding excessive air volume in the front aeration pipe 2.

[0022] The upper end of the second diaphragm 6 is inclined at an angle of 45° towards the air outlet of the aeration pipe 2 near the sludge discharge port 4, so as to guide the sludge particles to the sludge discharge port 4 by means of airflow inertia, and prevent sludge from being retained.

[0023] In practical operation, gas enters the left connecting pipe 1 through the air inlet 3, is evenly distributed to each aeration pipe 2 after passing through the first diaphragm 5, and is sprayed upwards at a 45° angle through the aeration holes 21, making the air pressure of the entire aeration device more uniform. Some gas carries sludge particles along the connecting pipe 1 towards the sludge discharge port 4, where the second diaphragm 6 guides the sludge into the discharge port 4 for discharge. Regularly opening the valve at the sludge discharge port 4 can remove sediment, maintain the unobstructed flow of the aeration pipes 2, and make the aeration device more stable and efficient during production. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0024] The embodiments described above are merely preferred embodiments of the present invention, and are described in a relatively specific and detailed manner. However, the present invention is not limited to these embodiments. It should be noted that for those skilled in the art, any improvements made without departing from the spirit of the present invention fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An aeration device for a built-in ultrafiltration curtain membrane module, characterized in that, The device includes a connecting pipe (1), an aeration pipe (2), an air inlet (3), a sludge discharge outlet (4), a first diaphragm (5), and a second diaphragm (6). There are two connecting pipes (1) arranged in parallel left and right. Several aeration pipes (2) are horizontally connected between the two connecting pipes (1). Each aeration pipe (2) has an aeration hole (21) on both sides. The line connecting the center of the aeration hole (21) and the central axis of the aeration pipe (2) forms a 45° angle with the vertical direction. One of the connecting pipes (1) has an air inlet (3) at one end, and the other of the connecting pipe (1) has a sludge discharge outlet (4) at the other end. The first diaphragm (5) is inclined at the air inlet end of the aeration pipe (2) near the air inlet (3), and the second diaphragm (6) is inclined at the air outlet end of the aeration pipe (2) near the sludge discharge outlet (4).

2. The aeration device for a built-in ultrafiltration curtain membrane module according to claim 1, characterized in that, The aeration pipe (2) has two rows of aeration holes (21) on each side, each row containing a number of aeration holes (21) that are equidistantly distributed, and the two rows of aeration holes (21) are arranged in a staggered manner.

3. The aeration device for a built-in ultrafiltration curtain membrane module according to claim 1, characterized in that, Each of the aeration pipes (2) and the connecting pipes (1) is provided with a connector.

4. The aeration device for a built-in ultrafiltration curtain membrane module according to claim 1, characterized in that, The lower end of the first diaphragm (5) is inclined toward the air inlet end of the aeration pipe (2) near the air inlet (3) at an angle of 45°.

5. An aeration device for a built-in ultrafiltration curtain membrane module according to claim 1, characterized in that, The upper end of the second diaphragm (6) is inclined towards the air outlet of the aeration pipe (2) near the sludge discharge port (4) at an angle of 45°.

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