Construction method of integrally formed filter plate of denitrification filter and filter plate

Abstract

The present application relates to sewage treatment technical field, aims at solving the problems of the prior art, such as the damage and loosening of the air distribution pipe under the filter plate, the uneven air distribution, the poor backwashing effect, the low sewage treatment efficiency and the increased maintenance cost, and provides a denitrification filter tank integrated filter plate construction method and filter plate; the method comprises the following steps: BIM modeling, deepening the positions of the water passing system, the air distribution system and the truss supporting system in the filter plate; pre-processing the water passing system, the air distribution system and the truss supporting system, welding the truss supporting system and the bottom die unit module to obtain a supporting plate; installing the supporting plate; binding the longitudinal steel bars at the bottom of the filter plate; installing the water hole embedded pipe and the air distribution system; installing the support ring and laying the horizontal air distribution branch pipe support rib; binding the longitudinal steel bars at the upper part of the filter plate; rechecking the top surface elevation of the water hole embedded pipe and the vertical air distribution branch pipe; pouring concrete; curing the concrete; debugging and acceptance; the present application can improve the sewage treatment efficiency and reduce the maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to a denitrification filter tank integrated filter plate construction method and filter plate. BACKGROUND

[0002] The denitrification filter tank is a device for sewage treatment, which is mainly used for removing nitrate in water by converting nitrate into nitrogen under the condition of anoxic by denitrifying bacteria.

[0003] The current filter plate and gas-water distribution system of the denitrification filter tank adopts the mode of prefabricating or casting the filter plate and then arranging the open pipe gas distribution under the filter plate. Since the open pipe is exposed in water for a long time and is prone to damage and loosening in the vibration process of backwashing, the gas distribution is uneven, the backwashing effect is poor, and the sewage treatment efficiency is reduced while the maintenance cost is increased. SUMMARY

[0004] The present application aims to provide a denitrification filter tank integrated filter plate construction method and filter plate to solve the problem that the current technology arranges the open pipe gas distribution under the filter plate, which is prone to damage and loosening of the gas distribution pipe due to long-term exposure in water and vibration in the backwashing process, resulting in uneven gas distribution, poor backwashing effect, reduced sewage treatment efficiency, and increased maintenance cost.

[0005] The present application is implemented by using the following technical solutions:

[0006] The present application provides a denitrification filter tank integrated filter plate construction method, comprising the following steps:

[0007] S1: BIM modeling of the filter plate according to the design drawings, deepening the positions of the water passing system, gas distribution system and truss support system in the filter plate;

[0008] S2: Preprocessing the water passing system, gas distribution system and truss support system, the water passing system including water hole embedded pipes, the gas distribution system including horizontal gas distribution branch pipes, vertical gas distribution branch pipes and gas distribution main pipes, and the truss support system including upper chord steel bars, lower chord steel bars, web steel bars, support rings and horizontal gas distribution branch pipe support bars, welding the upper chord steel bars, lower chord steel bars, web steel bars and bottom mold unit modules into an integral whole to obtain a support plate;

[0009] S3: Installing the support plate in the filter tank;

[0010] S4: Binding the filter plate bottom longitudinal steel bars;

[0011] S5: Installing the water hole embedded pipes and gas distribution system, and installing the sealing plate on the top of the water hole embedded pipes and the plug on the top of the vertical gas distribution branch pipes;

[0012] S6: installing a support ring on the horizontal air distribution branch pipe, arranging horizontal air distribution branch pipe support ribs on the upper and lower sides of the horizontal air distribution branch pipe respectively, welding the support ring on the horizontal air distribution branch pipe support ribs, and welding the horizontal air distribution branch pipe support ribs on the web steel bars;

[0013] S7: binding the upper longitudinal steel bars of the filter plate;

[0014] S8: checking the top surface elevation of the water hole embedded pipe and the vertical air distribution branch pipe, ensuring that the flatness deviation is not greater than 2mm, and taking it as the top elevation control surface for subsequent concrete pouring;

[0015] S9: pouring concrete, pouring the water hole embedded pipe, air distribution system and truss support system in the filter plate at the same time, and ensuring that one end of the air distribution main pipe extends out of the filter plate;

[0016] S10: concrete curing;

[0017] S11: removing the sealing plate and plug, and installing a slag separation filter head on the top of the water hole embedded pipe and the vertical air distribution branch pipe;

[0018] S12: debugging and accepting the filter plate.

[0019] As a preferred technical solution:

[0020] When the filter plate adopts multiple support plates to adapt to different sizes of filter tanks, step S3 is: sequentially splicing and installing multiple support plates in the filter tank; step S6 further comprises: overlapping the horizontal air distribution branch pipe support ribs of adjacent two support plates; step S9 is: uniformly pouring concrete on the multiple support plates to form the entire filter plate.

[0021] As a preferred technical solution:

[0022] In step S5, the sealing plate is installed on the water hole embedded pipe through the sealing plate screw and the fastening nut.

[0023] The application further provides a denitrification filter tank integrally formed filter plate formed by using the above denitrification filter tank integrally formed filter plate construction method;

[0024] The filter plate is pre-embedded with a water passing system, an air distribution system and a truss support system, the truss support system is fixedly connected with a bottom mold unit module to form a support plate;

[0025] The water passing system comprises a water hole embedded pipe, and a plurality of water hole embedded pipes are fixedly installed on the bottom mold unit module, and the water hole embedded pipes are arranged vertically to the plate surface of the bottom mold unit module;

[0026] The air distribution system comprises horizontal air distribution branch pipes, vertical air distribution branch pipes and an air distribution main pipe, the vertical air distribution branch pipes are connected with the horizontal air distribution branch pipes, the horizontal air distribution branch pipes are connected with the air distribution main pipe, one end of the air distribution main pipe extends out of the filter plate and is used for being connected with a blower;

[0027] The truss support system comprises upper chord steel bars, lower chord steel bars, web steel bars, support rings and horizontal air distribution branch pipe support bars, the web steel bars are connected between the upper chord steel bars and the lower chord steel bars, the horizontal air distribution branch pipe support bars are arranged on the upper and lower sides of the horizontal air distribution branch pipes and are fixedly connected to the web steel bars, and the support rings are sleeved outside the horizontal air distribution branch pipes and are fixedly connected to the horizontal air distribution branch pipe support bars.

[0028] As a preferred technical solution:

[0029] The filter plate comprises a plurality of support plates which are spliced and installed in the filter tank.

[0030] As a preferred technical solution:

[0031] The upper and lower ends of the water hole embedded pipe are connected with the external environment, the water hole embedded pipe forms a plurality of water holes on the filter plate, and the water hole embedded pipe is arranged in an array on the filter plate.

[0032] As a preferred technical solution:

[0033] The upper side of the bottom die unit module is provided with a plurality of horizontal air distribution branch pipes which are arranged parallel to the plate surface of the bottom die unit module, the top of each horizontal air distribution branch pipe is connected with a plurality of vertical air distribution branch pipes which are arranged perpendicular to the plate surface of the bottom die unit module, the air distribution main pipe is also arranged parallel to the plate surface of the bottom die unit module and is arranged perpendicular to the horizontal air distribution branch pipes, and each horizontal air distribution branch pipe is connected with the air distribution main pipe.

[0034] As a preferred technical solution:

[0035] The upper end of the water hole embedded pipe and the vertical air distribution branch pipe is connected with a slag separation filter head.

[0036] As a preferred technical solution:

[0037] The upper end of the water hole embedded pipe and the vertical air distribution branch pipe is provided with an internal thread, the lower part of the slag separation filter head is provided with an external thread, and the slag separation filter head is screwed into the water hole embedded pipe and the vertical air distribution branch pipe through the threads.

[0038] As a preferred technical solution:

[0039] The length direction of the horizontal air distribution branch support rib is perpendicular to the length direction of the horizontal air distribution branch, and the horizontal air distribution branch support rib is used for supporting and limiting the horizontal air distribution branch.

[0040] As a preferred technical solution:

[0041] The filter plate is poured with concrete, and the water hole embedded pipe, the air distribution system and the truss support system are all poured in the filter plate.

[0042] As described above, due to the adoption of the above technical solution, the beneficial effects of the present application are:

[0043] The construction method of the present application first obtains the overall structure of the filter plate through BIM modeling, deepens and optimizes the positions of the water passing system, the air distribution system and the truss support system in the filter plate to meet the design requirements; then prepares the required material components in advance, and installs them on site according to the construction sequence; finally, the water passing system, the air distribution system and the truss support system are embedded in the filter plate by pouring concrete, so that the air distribution system is integrated in the filter plate, avoiding the damage and loosening of the air distribution pipe caused by long-term exposure to water and vibration during backwashing in the prior art, which leads to uneven air distribution and poor backwashing effect, eliminating the need for post-maintenance and repair of the air distribution system, improving the sewage treatment efficiency while reducing maintenance costs; the present application integrates the denitrification filter tank filter plate and the air distribution system, which has no risk of air leakage and stable air pressure, and even if there is uneven settlement in the filter plate, it will not affect the uniformity of air distribution, and the backwashing effect is good.

[0044] The integrally formed filter plate of the denitrification filter tank of the present application directly integrates the air distribution system into the filter plate, and integrally pours and forms the denitrification filter tank filter plate and the air distribution system, solving the problem of high maintenance and repair costs and reduced production efficiency in the prior art of pouring the filter plate first or installing the prefabricated filter plate and then installing the air distribution pipe, avoiding the damage and loosening of the air distribution pipe caused by long-term exposure to water and vibration during backwashing, which leads to uneven air distribution and poor backwashing effect, which is conducive to improving the sewage treatment efficiency and reducing the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The flow chart of the construction method of the integrally formed filter plate of the denitrification filter tank of the present application.

[0046] Figure 2 The plan view structural diagram of the integrally formed filter plate of the denitrification filter tank of the present application.

[0047] Figure 3 The structural diagram of the support plate of the present application.

[0048] Figure 4For Figure 2 Cross-sectional view in A-A direction.

[0049] Figure 5 For Figure 2 Cross-sectional view in B-B direction

[0050] Figure 6 Structure diagram of water hole pre-embedded pipe according to the present application.

[0051] Figure 7 Structure diagram of vertical air distribution branch pipe according to the present application.

[0052] Figure legend: 1-bottom die, 2-lower chord reinforcement, 3-horizontal air distribution branch pipe, 4-vertical air distribution branch pipe, 5-air distribution main pipe, 6-water hole pre-embedded pipe, 7-support ring, 8-horizontal air distribution branch pipe support bar, 9-upper chord reinforcement, 10-web bar reinforcement, 11-ladle filter head, 12-plug, 13-fastening nut, 14-sealing plate, 15-sealing plate screw. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0054] Embodiment 1

[0055] As Figures 1-7 shown, the present embodiment proposes a denitrification filter tank integrally formed filter plate construction method, comprising the following steps:

[0056] S1: according to the design drawing, BIM modeling of the filter plate is carried out, and the positions of the water passing system, the air distribution system and the truss support system in the filter plate are deepened;

[0057] According to the design requirements, the position of the air distribution filter head is optimized, the number and position of the water passing holes are determined according to the water passing amount, and it is reviewed and confirmed that the air distribution and water passing system meets the backwashing requirements;

[0058] S2: the water passing system, the air distribution system and the truss support system are pre-processed, the water passing system includes the water hole pre-embedded pipe 6, the air distribution system includes the horizontal air distribution branch pipe 3, the vertical air distribution branch pipe 4 and the air distribution main pipe 5, and the truss support system includes the upper chord reinforcement 9, the lower chord reinforcement 2, the web bar reinforcement 10, the support ring 7 and the horizontal air distribution branch pipe support bar 8, the upper chord reinforcement 9, the lower chord reinforcement 2, the web bar reinforcement 10 and the bottom die 1 unit module are welded into a whole to obtain a support plate;

[0059] S3: sequentially splice and install multiple support plates in the filter tank;

[0060] S4: bind the bottom longitudinal steel bars of the filter plate;

[0061] S5: install the water hole embedded pipe 6 and the air distribution system, and install the sealing plate 14 on the top of the water hole embedded pipe 6 and install the plug 12 on the top of the vertical air distribution branch pipe 4;

[0062] S6: install the support ring 7 on the horizontal air distribution branch pipe 3, arrange the horizontal air distribution branch pipe support rib 8 on the upper and lower sides of the horizontal air distribution branch pipe 3 respectively, weld the support ring 7 on the horizontal air distribution branch pipe support rib 8, weld the horizontal air distribution branch pipe support rib 8 on the web steel bar 10, and overlap the horizontal air distribution branch pipe support rib 8 of adjacent two support plates;

[0063] S7: bind the upper longitudinal steel bars of the filter plate;

[0064] S8: check the top surface elevation of the water hole embedded pipe 6 and the vertical air distribution branch pipe 4, ensure that the flatness deviation is not more than 2mm, and use it as the top elevation control surface for subsequent concrete pouring, if the requirement is not met, process the water hole embedded pipe 6 and the vertical air distribution branch pipe 4 to meet the requirement;

[0065] S9: uniformly pour concrete on multiple support plates, pour the water hole embedded pipe 6, the air distribution system and the truss support system into the filter plate, and ensure that one end of the air distribution main pipe 5 extends out of the filter plate;

[0066] S10: perform concrete curing;

[0067] S11: remove the sealing plate 14 and the plug 12, and install the debris separation filter head 11 on the top of the water hole embedded pipe 6 and the vertical air distribution branch pipe 4;

[0068] S12: debug and accept the filter plate.

[0069] In the above manner, the support plate can be digitally designed and processed according to different sizes of filter plates, and then integrated forming and pouring for different specifications of filter plates can be realized, which is convenient for construction.

[0070] Further, in step S5, the sealing plate 14 is installed on the water hole embedded pipe 6 through the sealing plate screw 15 and the fastening nut 13.

[0071] The construction method of the application firstly obtains the overall structure of the filter plate through BIM modeling, deepens and optimizes the positions of the water passing system, the gas distribution system and the truss supporting system in the filter plate, so as to meet the design requirements; then the required material components are prepared in advance, and the installation is carried out on site according to the construction sequence; finally, the water passing system, the gas distribution system and the truss supporting system are embedded in the filter plate by pouring concrete, so that the gas distribution system is integrated in the filter plate, avoiding the problems of damage and loosening of the gas distribution pipe in the prior art caused by long-term exposure to water and vibration during backwashing, resulting in uneven gas distribution and poor backwashing effect, eliminating the need for post-maintenance and repair of the gas distribution system, improving the sewage treatment efficiency while reducing the maintenance cost; the application integrates the filter plate and the gas distribution system of the denitrification filter, and there is no risk of air leakage, the air pressure is stable, and even if there is uneven settlement in the filter plate, it will not affect the uniformity of gas distribution, and the backwashing effect is good.

[0072] Example 2

[0073] As shown in Figures 2-7 The present embodiment provides a denitrification filter integrally formed filter plate, the filter plate is embedded with a water passing system, a gas distribution system and a truss supporting system, the truss supporting system is fixedly connected with a bottom die 1 unit module to form a supporting plate.

[0074] The water passing system includes a water hole embedded pipe 6, a plurality of water hole embedded pipes 6 are fixedly installed on the bottom die 1, the water hole embedded pipe 6 is perpendicular to the plate surface of the bottom die 1, the water hole embedded pipe 6 is embedded in the filter plate, and the water hole embedded pipe 6 forms a plurality of water passing holes on the filter plate, which is convenient for water flow.

[0075] The lower end of each water hole embedded pipe 6 is connected with the mounting hole on the bottom die 1, and the upper end of each water hole embedded pipe 6 extends out of or is flush with the top surface of the filter plate, the water passing hole penetrates through the filter plate, and the entire water hole embedded pipe 6 is connected with the external environment, so that a plurality of water passing holes are formed on the filter plate by embedding the water hole embedded pipe 6 in the filter plate, and the filter plate has the function of the filter plate.

[0076] The water passing holes are arranged in an array on the plate surface of the filter plate, achieving uniform filtration.

[0077] The gas distribution system is integrated in the filter plate, and the gas distribution system includes horizontal gas distribution branch pipes 3, vertical gas distribution branch pipes 4 and a gas distribution main pipe 5.

[0078] A plurality of horizontal gas distribution branch pipes 3 are arranged above the bottom die 1, the horizontal gas distribution branch pipes 3 are parallel to the plate surface of the bottom die 1, and all the horizontal gas distribution branch pipes 3 are parallel to each other and arranged at a certain interval. All the horizontal gas distribution branch pipes 3 are embedded in the filter plate and staggered with the water hole embedded pipes 6.

[0079] The top of each horizontal air distribution branch pipe 3 is connected with a plurality of vertical air distribution branch pipes 4, the vertical air distribution branch pipes 4 are pre-embedded in the filter plate, the lower end of the vertical air distribution branch pipes 4 is communicated with the horizontal air distribution branch pipe 3, the upper end of the vertical air distribution branch pipes 4 extends out of or is flush with the top surface of the filter plate, and the upper end of the vertical air distribution branch pipes 4 is communicated with the external environment.

[0080] In the embodiment, the vertical air distribution branch pipes 4 and the horizontal air distribution branch pipes 3 are fixed by threading or welding, and the horizontal air distribution branch pipes 3 and the air distribution main pipe 5 are also fixed by welding or threading.

[0081] The air distribution main pipe 5 is further arranged above the bottom die 1, the air distribution main pipe 5 is pre-embedded in the filter plate, the air distribution main pipe 5 is arranged parallel to the plate surface of the bottom die 1, and the air distribution main pipe 5 is further arranged perpendicular to the horizontal air distribution branch pipe 3, each horizontal air distribution branch pipe 3 is communicated with the air distribution main pipe 5, and the air distribution main pipe 5 is supported by the horizontal air distribution branch pipe 3. One end of the air distribution main pipe 5 extends out of one side of the filter plate and is connected with a blower.

[0082] The blower sends gas into the air distribution main pipe 5, the air distribution main pipe 5 sends the gas to each horizontal air distribution branch pipe 3, the gas enters the horizontal air distribution branch pipe 3 and is discharged from the vertical air distribution branch pipe 4, thereby achieving air distribution.

[0083] The number of the air distribution main pipe 5 is at least one, in the embodiment, two air distribution main pipes 5 are pre-embedded in the filter plate, which are air distribution main pipe one and air distribution main pipe two, and all the horizontal air distribution branch pipes 3 are communicated with the air distribution main pipe one and the air distribution main pipe two. One end of the air distribution main pipe one and the air distribution main pipe two extending out of the filter plate can be connected with one blower respectively, or one end of the air distribution main pipe one is connected with the blower, and the end of the air distribution main pipe two is connected to the air distribution main pipe one.

[0084] Further, the upper end of the water hole pre-embedded pipe 6 and the vertical air distribution branch pipe 4 is connected with a slag separation filter head 11. The upper end of the water hole pre-embedded pipe 6 and the vertical air distribution branch pipe 4 is provided with an internal thread, the lower part of the slag separation filter head 11 is provided with an external thread, and the slag separation filter head 11 is screwed into the water hole pre-embedded pipe 6 and the vertical air distribution branch pipe 4.

[0085] The truss support system comprises upper chord steel bars 9, lower chord steel bars 2, web steel bars 10, support rings 7 and horizontal air distribution pipe support bars 8, the web steel bars 10 being bound between the upper chord steel bars 9 and the lower chord steel bars 2.

[0086] The horizontal air distribution pipe support bars 8 are connected with a plurality of the support rings 7, the support rings 7 being sleeved outside the horizontal air distribution pipes 3 and used for supporting and fixing the horizontal air distribution pipes 3.

[0087] The filter plate comprises a plurality of the support plates, the plurality of the support plates being spliced and installed in the filter tank, the horizontal air distribution pipe support bars 8 of adjacent two support plates being overlapped and connected, and the filter plate being poured with concrete, the water hole embedded pipe 6, the air distribution system and the truss support system being poured in the filter plate, a plurality of the support plates being spliced and then uniformly poured with concrete to obtain the integrally formed filter plate of the denitrification filter tank.

[0088] In order to avoid the concrete from entering the water hole embedded pipe 6 and the vertical air distribution pipe 4, a sealing plate 14 is installed on the top of the water hole embedded pipe 6 before pouring, and a plug 12 is installed on the top of the vertical air distribution pipe 4, and after the concrete is poured and cured, the sealing plate 14 and the plug 12 are replaced with a residue separation filter head 11.

[0089] The air distribution system is supported by the support plate and directly integrated in the integrally formed filter plate of the present application, and the filter plate of the denitrification filter tank and the air distribution system are integrally poured and formed, thereby solving the problem of high maintenance cost and low production efficiency in the prior art that the filter plate is poured first or the prefabricated filter plate is installed and then the air distribution pipe is installed, avoiding the problems of damage and loosening of the air distribution pipe caused by long-term exposure of the air distribution pipe in water and vibration in the backwashing process, resulting in uneven air distribution and poor backwashing effect, and being beneficial to improving the sewage treatment efficiency and reducing the maintenance cost.

[0090] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and the present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for constructing an integrated molded filter plate for a denitrification filter, characterized in that: Includes the following steps: S1: Based on the design drawings, perform BIM modeling of the filter plate to refine the location of the water flow system, air distribution system and truss support system inside the filter plate; S2: Pre-process the water supply system, air distribution system, and truss support system. The water supply system includes pre-embedded water holes. The air distribution system includes horizontal air distribution branch pipes, vertical air distribution branch pipes, and main air distribution pipes. The truss support system includes upper chord steel bars, lower chord steel bars, web steel bars, support rings, and horizontal air distribution branch pipe support bars. Weld the upper chord steel bars, lower chord steel bars, web steel bars, and bottom formwork unit modules into a whole to obtain the support plate. S3: Install a support plate in the filter bed; S4: Tie the continuous reinforcing bars at the bottom of the filter plate; S5: Install the water hole pre-embedded pipe and the air distribution system, and install a sealing plate on the top of the water hole pre-embedded pipe and a plug on the top of the vertical air distribution branch pipe. S6: Install support rings on the horizontal air distribution branch pipes, and lay horizontal air distribution branch pipe support bars on the upper and lower sides of the horizontal air distribution branch pipes respectively. Weld the support rings to the horizontal air distribution branch pipe support bars, and weld the horizontal air distribution branch pipe support bars to the web reinforcement bars. S7: Tie the continuous reinforcing bars at the top of the filter plate; S8: Verify the top elevation of the water hole pre-embedded pipe and the vertical air distribution branch pipe to ensure that the flatness deviation is no more than 2mm, and use it as the top elevation control surface for subsequent concrete pouring. S9: Concrete pouring is carried out to include the water hole pre-embedded pipe, the air distribution system and the truss support system, while ensuring that one end of the air distribution main pipe extends out of the filter plate. S10: Perform concrete curing; S11: Remove the sealing plate and plug, and install the slag filter head at the top of the water hole pre-embedded pipe and the vertical air distribution branch pipe; S12: Perform debugging and acceptance testing on the filter plates.

2. The construction method of the integrated molded filter plate for denitrification filter tank according to claim 1, characterized in that: When the filter plate uses multiple support plates to adapt to filter tanks of different sizes, step S3 is: to splice and install multiple support plates in the filter tank in sequence; step S6 also includes: to overlap the horizontal air distribution branch pipe support bars of two adjacent support plates; step S9 is: to pour concrete uniformly on multiple support plates to form the entire filter plate.

3. The construction method of the integrated molded filter plate for denitrification filter tank according to claim 1, characterized in that: In step S5, the sealing plate is installed on the water hole pre-embedded pipe by the sealing plate screw and the fastening nut.

4. A one-piece molded filter plate for a denitrification filter, characterized in that: It is formed using the construction method of the integrated molded filter plate for denitrification filter as described in any one of claims 1-3; The filter plate is pre-embedded with a water-passing system, an air distribution system, and a truss support system. The truss support system is fixedly connected to the bottom formwork unit module to form a support plate. The water passage system includes water hole pre-embedded pipes, and multiple water hole pre-embedded pipes are fixedly installed on the bottom mold unit module. The water hole pre-embedded pipes are arranged perpendicular to the plate surface of the bottom mold unit module. The air distribution system includes a horizontal air distribution branch pipe, a vertical air distribution branch pipe, and a main air distribution pipe. The vertical air distribution branch pipe is connected to the horizontal air distribution branch pipe, and the horizontal air distribution branch pipe is connected to the main air distribution pipe. One end of the main air distribution pipe extends out of the filter plate and is used to connect to the blower. The truss support system includes upper chord reinforcement, lower chord reinforcement, web reinforcement, support ring, and horizontal air distribution branch pipe support reinforcement. The web reinforcement is connected between the upper chord reinforcement and the lower chord reinforcement. The horizontal air distribution branch pipe support reinforcement is arranged on the upper and lower sides of the horizontal air distribution branch pipe and fixedly connected to the web reinforcement. The support ring is sleeved on the outside of the horizontal air distribution branch pipe and fixedly connected to the horizontal air distribution branch pipe support reinforcement.

5. The integrally molded filter plate for denitrification filter tank according to claim 4, characterized in that: The filter plate includes multiple support plates, which are spliced ​​and installed in the filter tank.

6. The integrally molded filter plate for denitrification filter tank according to claim 4, characterized in that: Both ends of the water hole pre-embedded pipe are connected to the external environment. The water hole pre-embedded pipe forms multiple water passage holes on the filter plate, and the water hole pre-embedded pipe is arranged in an array on the filter plate.

7. The integrally molded filter plate for denitrification filter tank according to claim 4, characterized in that: Multiple horizontal air distribution pipes are spaced apart above the bottom mold unit module. The horizontal air distribution pipes are parallel to the surface of the bottom mold unit module. Multiple vertical air distribution pipes are connected to the top of the horizontal air distribution pipes. The vertical air distribution pipes are perpendicular to the surface of the bottom mold unit module. The main air distribution pipe is also parallel to the surface of the bottom mold unit module and perpendicular to the horizontal air distribution pipes. Each horizontal air distribution pipe is connected to the main air distribution pipe.

8. The integrally molded filter plate for denitrification filter tank according to claim 4, characterized in that: The upper ends of the water hole pre-embedded pipe and the vertical air distribution branch pipe are connected to a slag-separating filter head.

9. The integrally molded filter plate for denitrification filter tank according to claim 4, characterized in that: The length direction of the horizontal air distribution branch pipe support rib is perpendicular to the length direction of the horizontal air distribution branch pipe, and the horizontal air distribution branch pipe support rib is used to support and limit the horizontal air distribution branch pipe.

10. The integrally molded filter plate for denitrification filter tank according to claim 4, characterized in that: The filter plate is filled with concrete, and the water hole pre-embedded pipe, the air distribution system, and the truss support system are all poured into the filter plate.

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