Uniform air distribution device for denitrification filter

Abstract

This utility model relates to the field of water treatment technology and discloses a uniform aeration device for a denitrification filter. It includes a main aeration pipe with an air inlet at its front and several branch aeration pipes evenly distributed at its rear. The air inlet, main aeration pipe, and branch aeration pipes are all made of stainless steel. A flange is installed on the outer side of the front end of the air inlet. The air inlet and branch aeration pipes are fixed to the main aeration pipe by welding, and both ends of the main aeration pipe are sealed with cover plates. This utility model has a simple structure and is easy to install. By arranging the main aeration pipe inside the denitrification filter and inserting the branch aeration pipes into the backwash air holes of each row of S-shaped filter bricks in the denitrification filter, the gas in the branch aeration pipes is evenly distributed. This assists the S-shaped filter bricks in uniformly aerating the denitrification filter, ensuring the uniformity of gas distribution throughout the filter and improving the efficiency of gas utilization.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, specifically a uniform aeration device for a denitrification filter. Background Technology

[0002] Denitrification filters in wastewater treatment plants are a type of biological filtration equipment used to treat wastewater containing high concentrations of nitrogen compounds such as ammonia nitrogen, nitrate nitrogen, and nitrite nitrogen. The basic principle is that, under anaerobic conditions, denitrifying bacteria convert nitrogen compounds in wastewater into gases through denitrification and release energy at the same time.

[0003] In denitrification filters, S-shaped filter bricks are stacked to form a filter layer. When water flows through the filter layer, impurities are trapped on the surface of the filter bricks and inside the filter layer, thus purifying the water. S-shaped filter bricks are usually made of high-density polyethylene through injection molding and have a rectangular shape. The upper part has evenly distributed water distribution and air distribution holes and water holes. The internal structure of the filter brick is designed with air above and water below. The upper part is the backwash air hole, which is evenly distributed to the upper backwash air hole after forming an air cushion layer in the middle U-shaped cavity. The lower part is the water distribution system, which uses the gaps formed by the top corners of the filter brick and the water collection holes at the bottom of the filter brick to collect the filtered water. This requires the use of an air distribution device to send air into the S-shaped filter brick to assist the S-shaped filter brick in aeration.

[0004] However, traditional aeration devices are complex in structure, inconvenient to install, and cannot reasonably distribute the aeration volume. Utility Model Content

[0005] The purpose of this invention is to provide a uniform aeration device for a denitrification filter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A uniform aeration device for a denitrification filter includes a main aeration pipe, an air inlet on the front side of the main aeration pipe, and a plurality of aeration branch pipes uniformly arranged on the rear side of the main aeration pipe.

[0008] As a further improvement of this utility model, the air inlet, the main air distribution pipe, and the branch air distribution pipe are all made of stainless steel.

[0009] As a further improvement of this utility model, a flange is installed on the outer side of the front end of the air inlet.

[0010] As a further embodiment of this utility model: the air inlet and the air distribution branch pipe are both fixed to the air distribution main pipe by welding, and both ends of the air distribution main pipe are sealed by cover plates.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This utility model has a simple structure and is easy to install. By arranging the main gas distribution pipe in the denitrification filter and inserting the branch gas distribution pipes into the backwash air holes of each row of S-shaped filter bricks in the denitrification filter, the gas in the branch gas distribution pipes can be evenly distributed. This can assist the S-shaped filter bricks in uniformly aerating the denitrification filter, ensuring the uniformity of gas distribution throughout the filter and improving the efficiency of gas utilization. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of a uniform aeration device for a denitrification filter.

[0014] Figure 2 A top view schematic diagram of a uniform aeration device for a denitrification filter.

[0015] Figure 3 This is a left-side schematic diagram of a uniform aeration device for a denitrification filter.

[0016] In the diagram: 1. Air inlet; 2. Main air distribution pipe; 3. Branch air distribution pipe. Detailed Implementation

[0017] Please see Figures 1-3 In this embodiment of the present invention, a uniform aeration device for a denitrification filter includes a main aeration pipe 2, an air inlet 1 on the front side of the main aeration pipe 2, and a plurality of aeration branch pipes 3 uniformly arranged on the rear side of the main aeration pipe 2. The main aeration pipe 2 is fixed in the water distribution channel of the denitrification filter by a stainless steel bracket, and no air distribution pipe or stainless steel fixing bracket is needed at the bottom of the denitrification filter. The air inlet 1 is connected to an external blower, and the aeration branch pipes 3 are inserted into the backwash air holes of each row of S-shaped filter bricks in the denitrification filter. The aeration air volume generated by the blower enters the main aeration pipe 2 through the air inlet 1, and after being evenly distributed through the aeration branch pipes 3, it is transmitted to the backwash air holes of the S-shaped filter bricks. The gas is evenly distributed to the entire denitrification filter through the S-shaped filter bricks.

[0018] Preferably, the air inlet 1, the main air distribution pipe 2, and the branch air distribution pipe 3 are all made of stainless steel, which can ensure that the air distribution device is not prone to rusting in harsh environments and improve its service life.

[0019] Preferably, a flange is installed on the outer side of the front end of the air inlet 1, so that the air inlet 1 can be easily connected to an external blower.

[0020] Preferably, the air inlet 1 and the air distribution branch pipe 3 are both fixed to the air distribution main pipe 2 by welding. Both ends of the air distribution main pipe 2 are sealed by cover plates, so as to ensure that the gas entering the air distribution main pipe 2 does not leak.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An even air distribution device for a denitrification filter, characterized in that, It includes a main gas distribution pipe (2), an air inlet (1) is provided on the front side of the main gas distribution pipe (2), and a number of gas distribution branch pipes (3) are evenly provided on the rear side of the main gas distribution pipe (2). Connect the air inlet (1) to an external blower and insert the air distribution branch pipe (3) into the backwash air hole of each row of S-type filter bricks in the denitrification filter. The aeration air volume generated by the blower enters the air distribution main pipe (2) through the air inlet (1), and is then evenly distributed through the air distribution branch pipe (3) before being transmitted to the backwash air hole of the S-type filter brick. The gas is evenly distributed to the entire denitrification filter through the S-type filter brick.

2. A uniform air distribution device for a denitrification filter according to claim 1, characterized in that The air inlet (1), main air distribution pipe (2), and branch air distribution pipe (3) are all made of stainless steel.

3. A uniform air distribution device for a denitrification filter according to claim 1, characterized in that A flange is installed on the outer side of the front end of the air inlet (1).

4. A uniform air distribution device for a denitrification filter according to claim 1, characterized in that The air inlet (1) and the air distribution branch pipe (3) are both fixed to the air distribution main pipe (2) by welding, and both ends of the air distribution main pipe (2) are sealed by cover plates.

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