Sewage treatment system based on nitration reaction

Abstract

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system based on nitration reaction. Comprising a treatment tank and a support, a spiral plate is arranged in a sleeve arranged on the inner ring of the treatment tank, the bottom of the spiral plate exceeds the sleeve, the spiral plate is coaxially connected with an output shaft of a motor, the motor is fixed to the bottom of the treatment tank, and a partition plate is fixedly connected to the interior of the treatment tank and used for dividing the space between the treatment tank and the partition plate into a sludge cavity and a sewage cavity from top to bottom; and a flow guide piece for guiding moisture in the sludge into the sewage cavity is connected between the sludge cavities. The flow guide part for guiding water in sludge into the sewage cavity is connected between the sludge cavities, so that the solid content of the sludge can be reduced, the volume of the sludge is reduced, the recovery effect of the sewage is improved, the floating block is matched to move upwards under the action of the sludge, the contact area between the water absorption rod and the sludge is increased, and the water absorption effect of the water absorption rod is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system based on nitrification reaction. Background Art

[0002] With the rapid development of industrialization and urbanization, a large amount of sewage is discharged into the environment, posing a serious threat to the ecosystem and human health. Therefore, the research and development and application of sewage treatment technology is particularly important. Among the many sewage treatment technologies, the sewage treatment system based on nitrification reaction has attracted much attention due to its high efficiency, stability and environmental protection.

[0003] There are many existing technologies for sewage treatment, such as:

[0004] Chinese patent publication number CN118324301A discloses a sewage treatment system based on nitrification reaction, including a treatment tank, in which an aerobic chamber, an anoxic chamber and a sedimentation chamber are arranged, the bottoms of the aerobic chamber and the anoxic chamber are connected through the sedimentation chamber, a fluid guiding mechanism is also arranged in the treatment tank, a water inlet and an air outlet are arranged at the top of the treatment tank, and a sewage outlet and a water outlet are arranged at the bottom of the treatment tank. In this application example, an aerobic chamber and an anoxic chamber are arranged in the treatment tank, and sedimentation tanks are arranged at the bottom of the aerobic chamber and the anoxic chamber, and the fluid guiding mechanism is used to guide the sewage to circulate in the aerobic chamber and the anoxic chamber, so that the sludge can be gathered in the sedimentation chamber and discharged in time through the sewage outlet, thereby solving the problem that the sludge in the existing sewage treatment device cannot be discharged in time, resulting in sludge accumulation and affecting nitrification and denitrification reactions, and the sewage treatment efficiency is high.

[0005] It can be seen that in the prior art, when sewage is nitrified, the sludge and sewage mixture is usually transported to the treatment device, and then the sludge and sewage are separated, and then the sewage is pushed into the aerobic chamber to cooperate with the aeration pipe to introduce oxygen into the sewage, so that the sewage reacts with nitrifying bacteria to promote the growth and metabolic activity of nitrifying bacteria. However, the discharged sludge will also contain a small amount of water. If the sludge is discharged directly, the sewage in it will not be able to contact the nitrifying bacteria for nitrification reaction, so pollutants such as ammonia nitrogen will not be effectively removed, causing negative impacts on the environment. Secondly, the method of directly introducing oxygen into the sewage has a low oxygen transfer efficiency and poor treatment effect due to the limited contact area between oxygen and sewage. Summary of the invention

[0006] The object of the present invention is to provide a sewage treatment system based on nitrification reaction to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention aims to provide a sewage treatment system based on nitrification reaction, including a treatment tank and a bracket, wherein a spiral plate is arranged in a sleeve provided in the inner ring of the treatment tank, the bottom of the spiral plate exceeds the sleeve and the spiral plate is coaxially connected to the output shaft of the motor, the motor is fixed at the bottom of the treatment tank, a partition plate is fixedly connected inside the treatment tank, the partition plate is used to separate the treatment tank and the partition plate from top to bottom into a sludge chamber and a sewage chamber, and a guide member for guiding water in the sludge into the sewage chamber is connected between the sludge chambers;

[0008] A filter plate is arranged on the outer ring at the top of the partition plate, and compression parts connected to the sewage cavity are symmetrically arranged on the filter plate, and the filter plate is elastically connected to the inner wall of the treatment tank. The spiral plate transports the sludge to the top, so that the sludge hits the filter plate. An atomizing device is arranged at the bottom of the partition plate, and an aeration ring is arranged inside the partition plate opposite to the atomizing device. The filter plate uses the gravity of the sludge as power to cooperate with the compression part to pressurize the sewage in the sewage cavity, so that the sewage in the sewage cavity passes through the atomizing device and is sprayed toward the aeration ring in the form of atomization, and the atomized water droplets sprayed from the atomizing device and the oxygen sprayed from the aeration ring form convection.

[0009] As a further improvement of the technical solution, the filter plate is sleeved on the outer ring of the partition plate and is slidably connected to the partition plate. An inverted conical expansion plate is fixedly provided on the top outer ring of the sleeve, and the outer ring of the expansion plate extends outward to overlap with the filter plate.

[0010] As a further improvement of the present technical solution, the guide member includes a water absorption rod connecting the sludge chamber and the sewage chamber, and a floating block fixedly connected to the top of the water absorption rod is located in the sludge chamber. The floating block is in a suspended state under normal circumstances, so that the sludge sliding from the partition plate into the sludge chamber pushes the floating block upward.

[0011] As a further improvement of the present technical solution, when the filter plate moves downward, a tension spring is elastically connected between the symmetrical sides of the filter plate and the inner wall of the processing tank. The tension spring utilizes its elasticity to pull the filter plate up and back to its original position. A push rod is fixedly connected to the filter plate just below the tension spring.

[0012] As a further improvement of the present technical solution, the bottom of the push rod is curved and inclined inwardly, and a valve plate is abutted against the curved portion of the push rod. The valve plate is used to seal the sewage hole opened on the partition plate and connected to the sludge chamber to limit the discharge of sludge in the sludge chamber.

[0013] As a further improvement of the present technical solution, a sewage box is fixedly connected on the inner wall of the partition plate at the bottom of the valve plate. The sewage box passes through the partition plate and the treatment tank and is connected to the outside. Under normal circumstances, the valve plate and the top of the sewage box are offset to separate the sewage box from the sludge chamber. When the valve plate moves inward, the sludge chamber is connected to the sewage box so that the sludge at the bottom of the sludge chamber is discharged along the sewage box.

[0014] As a further improvement of the present technical solution, the compression part includes a piston cylinder fixedly connected to the inner wall of the treatment tank and a piston rod movably arranged in the piston cylinder, the piston rod is fixedly arranged at the top of the filter plate, and an air supply pipe connecting the top of the piston cylinder and the sewage chamber is arranged between the two, and a one-way valve is arranged in the air supply pipe and the air supply pipe arranged at the top of the piston cylinder.

[0015] As a further improvement of the present technical solution, the outer ring of the sleeve located at the top of the partition plate is provided with a bearing plate, the bearing plate is slidably connected to the sleeve, the bearing plate is larger than the inner diameter of the inner wall at the top of the partition plate, and a traction rope passing through the partition plate is fixedly connected between the two ends of the bearing plate and the filter plate, and the traction rope is arranged opposite to the piston cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the sewage treatment system based on nitrification reaction, a guide piece is connected between the sludge chambers to guide the water in the sludge into the sewage chamber, so that the solid content of the sludge can be reduced, thereby reducing the volume of the sludge and improving the sewage recovery effect. The floating block moves upward under the action of the sludge, which increases the contact area between the water absorption rod and the sludge, thereby improving the water absorption effect of the water absorption rod.

[0018] 2. In the sewage treatment system based on nitrification reaction, a piston rod is used to apply pressure to the sewage in the sewage chamber so that the sewage in the sewage chamber is sprayed toward the aeration ring in the form of atomization through an atomization device. The atomized water droplets sprayed from the atomization device and the oxygen sprayed from the aeration ring form convection, so that the sewage and oxygen are evenly mixed, thereby increasing the contact area between the sewage and oxygen, thereby improving the oxygen transfer efficiency, and helping to accelerate the oxidation and decomposition process of organic matter in the sewage.

[0019] 3. In the sewage treatment system based on nitrification reaction, the filter plate is used to pull the traction rope to reduce the distance between the support plate and the inner wall of the partition plate, which can reduce the discharge of gas inside the partition plate, thereby increasing the time that oxygen stays inside the partition plate, providing better conditions for oxygen and sewage for these biological processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a front view of the internal structure of the treatment tank, sleeve and partition plate of the present invention;

[0022] Figure 3 It is a schematic diagram of the partial cross-section explosion structure of the processing tank, valve plate and sewage box of the present invention;

[0023] Figure 4 It is a schematic diagram of the partial structure of the treatment tank and the partition plate of the present invention;

[0024] Figure 5 It is a left view of the internal structure of the treatment tank and the partition plate of the present invention;

[0025] Figure 6 For the present invention Figure 5 A is an enlarged structural diagram;

[0026] Figure 7 It is a schematic diagram of the partial cross-section structure of the filter plate and the partition plate of the present invention.

[0027] The meaning of each number in the figure is:

[0028] 100, treatment tank; 101, bracket; 110, casing; 111, motor; 112, spiral plate; 113, expansion plate;

[0029] 120, filter plate; 121, push rod; 122, tension spring; 123, traction rope; 124, load-bearing plate;

[0030] 130, partition plate; 131, sludge chamber; 132, sewage chamber; 133, sewage discharge hole; 134, atomization device;

[0031] 140, guide piece; 141, water absorption rod; 142, floating block;

[0032] 150, aeration ring; 160, valve plate; 161, sewage box;

[0033] 200, compression unit; 210, piston cylinder; 211, air supply pipe; 212, one-way valve; 220, piston rod. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] like Figure 1 and Figure 2 As shown, a sewage treatment system based on nitrification reaction is provided, including a treatment tank 100 and a bracket 101. A spiral plate 112 is arranged in a sleeve 110 provided in the inner circle of the treatment tank 100. The bottom of the spiral plate 112 exceeds the sleeve 110, and the spiral plate 112 is coaxially connected to the output shaft of a motor 111. The motor 111 is fixed at the bottom of the treatment tank 100. When a mixture of sewage and sludge is added to the treatment tank 100, the raw material is conveyed to the feed pipe at the bottom of the treatment tank 100 through a feeding device, so that the raw material enters the bottom of the sewage cavity 132, and then the sludge deposited at the bottom of the sewage cavity 132 is conveyed to the top of the sleeve 110 by the rotating spiral plate 112, so that the sludge is separated from the sewage.

[0037] Since the partition plate 130 is fixedly connected inside the treatment tank 100, the partition plate 130 is used to separate the treatment tank 100 and the partition plate 130 from top to bottom into a sludge chamber 131 and a sewage chamber 132, and a filter plate 120 is arranged on the outer ring of the top of the partition plate 130, and the filter plate 120 is sleeved on the outer ring of the partition plate 130 and is slidably connected to the partition plate 130, and an inverted conical expansion plate 113 is fixedly arranged on the outer ring of the top of the sleeve 110, and the outer ring of the expansion plate 113 extends outward to overlap with the filter plate 120.

[0038] Therefore, after the sludge is separated from the top of the sleeve 110, the sludge slides along the expansion plate 113 to the filter plate 120 and passes through the filter plate 120 to filter large particles (such as small stones) in the sludge, and the large particles are collected at the angle between the top of the partition plate 130 and the filter plate 120. The sludge is filtered out from the filter plate 120. In this process, because the filter plate 120 is elastically connected to the inner wall of the treatment tank 100, the sludge is filtered out from the filter plate 120 and slides along the partition plate 130 to the sludge chamber 131 for storage. The sludge chamber 131 is connected to the sludge chamber 131 with a guide 140 for guiding the water in the sludge into the sewage chamber 132. By guiding the water in the sludge into the sewage chamber 132, the solid content of the sludge can be reduced, thereby reducing the volume of the sludge and improving the sewage recovery effect.

[0039] Below Figure 2 Based on and combined with Figure 4 As shown, the structure of the guide member 140 is disclosed, and the guide member 140 includes a water absorption rod 141 connecting the sludge chamber 131 and the sewage chamber 132. A floating block 142 fixedly connected to the top of the water absorption rod 141 is located in the sludge chamber 131. The floating block 142 is in a suspended state under normal conditions, so that the sludge that slides from the partition plate 130 to the sludge chamber 131 pushes the floating block 142 upward, preventing the floating block 142 from being covered by the sludge and affecting the water absorption effect of the water absorption rod 141.

[0040] It should be noted that the water absorbing rod 141 is usually made of highly water-absorbing materials, such as resin or polymer, etc. When one end of the water absorbing rod 141 is immersed in water and the other end is immersed in dry soil, the dry soil can quickly absorb a large amount of water.

[0041] The floating block 142 being covered by sludge affects the water absorption effect of the water absorption rod 141. The specific reason is that when the floating block 142 is covered by sludge, since only a section of the water absorption rod 141 is in contact with the sludge, compared with the situation when the floating block 142 is not covered by sludge, the floating block 142 moves upward under the action of the sludge, increasing the contact area between the water absorption rod 141 and the sludge, thereby improving the water absorption effect of the water absorption rod 141.

[0042] Secondly, the spiral plate 112 transports the sludge to the top, causing the sludge to hit the filter plate 120. Since the fluidity of the sludge is usually poor and the sludge contains little water, when the sludge falls off the expansion plate 113, the sludge falls onto the filter plate 120 in the form of blocks.

[0043] When the sludge falls onto the filter plate 120, the filter plate 120 moves downward under the action of gravity. Figure 3 and Figure 4 As shown, tension springs 122 are elastically connected between the symmetrical two sides of the filter plate 120 and the inner wall of the treatment tank 100. The tension springs 122 utilize elasticity to pull the filter plate 120 upward and reset. A push rod 121 is fixedly connected to the filter plate 120 directly below the tension spring 122. The bottom of the push rod 121 is curved and inclined inward, and a valve plate 160 is abutted against the curved portion of the push rod 121. The valve plate 160 is used to block the drain hole 133 opened on the partition plate 130 and connected to the sludge chamber 131, so as to limit the discharge of sludge in the sludge chamber 131.

[0044] As the sludge accumulates in the sludge chamber 131, the sludge falling from the expansion plate 113 onto the filter plate 120 can cause the filter plate 120 to move downward. However, after the sludge falls off the filter plate 120, the weight of the filter plate 120 is reduced. At the same time, the sludge in the sludge chamber 131 pushes the valve plate 160 outward, so as to discharge the sludge deposited in the sludge chamber 131. The specific process is as follows:

[0045] Among them, a fixed connector on the inner wall of the partition plate 130 at the bottom of the valve plate 160 has a sewage box 161, which penetrates the partition plate 130 and the processing tank 100 and communicates with the outside. Under normal conditions, the valve plate 160 and the top of the sewage box 161 are misaligned, so that the sewage box 161 is separated from the sludge chamber 131. When the valve plate 160 moves inward, the sludge chamber 131 is connected with the sewage box 161, so that the sludge at the bottom of the sludge chamber 131 is discharged along the sewage box 161. This prevents the sludge deposited at the bottom of the sludge chamber 131 from staying for a long time, resulting in the inability of the new sludge above to contact the water absorption rod 141, affecting the absorption effect of the water absorption rod 141 on the water in the sludge.

[0046] Working principle: After the sludge is filtered out from the filter plate 120, the sludge slides along the partition plate 130 into the sludge chamber 131 for standing. At the same time, as the sludge in the sludge chamber 131 continues to increase, the sludge pushes the floating block 142 to move the water absorption rod 141 upward, thereby increasing the contact area between the water absorption rod 141 and the sludge in the sludge chamber 131 and improving the sewage recovery effect in the sludge.

[0047] Furthermore, the sludge in the sludge chamber 131 breaks through the restriction of the push rod 121 on the valve plate 160, and the sludge in the sludge chamber 131 is used to push the valve plate 160 inward, and the valve plate 160 and the sewage box 161 are transformed from being misaligned to being connected, and the sludge deposited at the bottom of the sludge chamber 131 slides from the sewage hole 133 to the sewage box 161 and is discharged to the outside for subsequent processing.

[0048] Next, combine Figure 5 , Figure 6 and Figure 7As shown, the filter plate 120 is symmetrically provided with a compression part 200 connected with the sewage chamber 132. During the process of the filter plate 120 moving up and down, an atomizing device 134 is provided at the bottom of the partition plate 130. An aeration ring 150 is provided inside the partition plate 130 opposite to the atomizing device 134. The filter plate 120 uses the gravity of the sludge as a power to cooperate with the compression part 200 to pressurize the sewage in the sewage chamber 132, so that the sewage in the sewage chamber 132 is sprayed toward the aeration ring 150 in the form of atomization through the atomizing device 134. The atomized water droplets sprayed from the atomizing device 134 and the oxygen sprayed from the aeration ring 150 form convection, so that the sewage and the oxygen are evenly mixed, thereby increasing the contact area between the sewage and the oxygen, thereby improving the oxygen transfer efficiency, and helping to accelerate the oxidation and decomposition process of organic matter in the sewage.

[0049] On the basis of the above structure, the structure of the compression part 200 is further disclosed, and the compression part 200 includes a piston cylinder 210 fixedly connected to the inner wall of the treatment tank 100 and a piston rod 220 movably arranged in the piston cylinder 210, and the piston rod 220 is fixedly arranged at the top of the filter plate 120, and an air supply pipe 211 is arranged between the top of the piston cylinder 210 and the sewage chamber 132 to connect the two, and a one-way valve 212 is arranged in the air supply pipe 211 and the air supply pipe arranged at the top of the piston cylinder 210.

[0050] The one-way valve 212 in the air pipe is used to allow outside air to enter the piston cylinder 210, while the one-way valve 212 in the air supply pipe 211 is used to supply the air entering the piston cylinder 210 into the sewage chamber 132. In this way, when the piston rod 220 is in the process of pumping air, the filter plate 120 drives the piston rod 220 to move downward, and the piston rod 220 pumps outside air into the piston cylinder 210 through the air pipe.

[0051] Compression process: When the piston rod 220 moves in the reverse direction, the air drawn into the piston cylinder 210 is pushed to the air supply pipe 211 and pressurizes the sewage in the sewage chamber 132 (the depth of the sewage is d, refer to Figure 6 As shown), the air pressure inside the sewage chamber 132 increases, thereby discharging the sewage from the atomizing device 134.

[0052] At this time, the oxygen sprayed from the aeration ring 150 and the water mist sprayed from the atomization device 134 form convection, and the sprayed water droplets gather on the inner wall of the partition plate 130. The ammonia nitrogen in the sewage is converted into nitrate and nitrite under the action of nitrifying bacteria in the partition plate 130, and a nitrification reaction occurs.

[0053] During this process, the outer ring of the sleeve 110 located at the top of the partition plate 130 is sleeved with a supporting plate 124, and the supporting plate 124 is slidably connected to the sleeve 110. The supporting plate 124 is larger than the inner diameter of the inner wall at the top of the partition plate 130, and a traction rope 123 that passes through the partition plate 130 is fixedly connected between the two ends of the supporting plate 124 and the filter plate 120, and the traction rope 123 is arranged opposite to the piston cylinder 210. In this way, during the upward movement of the filter plate 120, the joint between the filter plate 120 and the partition plate 130 moves upward to push the accumulated large particles onto the supporting plate 124, thereby separating the sludge from the large particles. At the same time, the supporting plate 124 moves upward under the pull of the traction rope 123 to make the supporting plate 124 and the inner wall of the partition plate 130 close to each other, thereby reducing the distance between the supporting plate 124 and the inner wall of the partition plate 130. When the gap for discharging air is reduced, the discharge amount of gas inside the partition plate 130 can be reduced, so as to increase the residence time of oxygen inside the partition plate 130, and provide better conditions for oxygen and sewage for these biological processes.

[0054] When too many large particles are collected on the carrying plate 124 , the large particles carried on the carrying plate 124 are cleaned by using a vacuum cleaner through the vacuum pipe penetrating into the partition plate 130 .

[0055] It is additionally explained that the width of the gap between the carrier plate 124 and the partition plate 130 is directly related to the flowability of the gas. The wider the gap, the larger the channel for gas flow and the greater the amount of gas discharged; on the contrary, the narrower the gap, the smaller the channel for gas flow and the less gas discharged. Therefore, when the gap for discharging air is reduced, the restriction on air flow becomes greater and the amount of gas discharged will also decrease.

[0056] In summary, returning to Figure 2 As shown, after the sewage treatment is completed, the nitrified sewage is discharged through a pipe connected to the sewage inside the partition plate 130, and then new sewage and sludge mixture is injected into the treatment tank 100, and the above process is repeated.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sewage treatment system based on nitrification reaction, comprising a treatment tank (100) and a bracket (101), wherein a spiral plate (112) is arranged in a sleeve (110) provided on the inner ring of the treatment tank (100), the bottom of the spiral plate (112) exceeds the sleeve (110) and the spiral plate (112) is coaxially connected to the output shaft of a motor (111), and the motor (111) is fixed at the bottom of the treatment tank (100), characterized in that: A partition plate (130) is fixedly connected inside the treatment tank (100), and the partition plate (130) is used to separate the treatment tank (100) and the partition plate (130) into a sludge chamber (131) and a sewage chamber (132) from top to bottom, and a flow guide (140) is connected between the sludge chambers (131) to guide water in the sludge into the sewage chamber (132); A filter plate (120) is arranged on the outer ring of the top of the partition plate (130), and a compression portion (200) communicating with the sewage chamber (132) is symmetrically arranged on the filter plate (120), and the filter plate (120) is elastically connected to the inner wall of the treatment tank (100), and the spiral plate (112) transports the sludge to the top so that the sludge hits the filter plate (120), and an atomizing device (134) is arranged at the bottom of the partition plate (130). An aeration ring (150) is arranged inside the atomizing device (130) opposite to the atomizing device (134), and the filter plate (120) uses the gravity of the sludge as a power to cooperate with the compression part (200) to pressurize the sewage in the sewage chamber (132), so that the sewage in the sewage chamber (132) passes through the atomizing device (134) and is sprayed toward the aeration ring (150) in the form of atomization, and the atomized water droplets sprayed from the atomizing device (134) and the oxygen sprayed from the aeration ring (150) form convection.

2. The sewage treatment system based on nitrification reaction according to claim 1, characterized in that: The filter plate (120) is sleeved on the outer ring of the partition plate (130) and is slidably connected to the partition plate (130); an inverted conical expansion plate (113) is fixedly provided on the top outer ring of the sleeve (110); the outer ring of the expansion plate (113) extends outwards to overlap with the filter plate (120).

3. The sewage treatment system based on nitrification reaction according to claim 1, characterized in that: The flow guide (140) comprises a water absorption rod (141) connecting the sludge chamber (131) and the sewage chamber (132); a floating block (142) fixedly connected to the top of the water absorption rod (141) is located in the sludge chamber (131); the floating block (142) is in a suspended state under normal conditions, so that the sludge that slides from the partition plate (130) into the sludge chamber (131) pushes the floating block (142) upwards.

4. The sewage treatment system based on nitrification reaction according to claim 1, characterized in that: When the filter plate (120) moves downward, a tension spring (122) is elastically connected between the symmetrical two sides of the filter plate (120) and the inner wall of the processing tank (100), and the tension spring (122) uses its elasticity to pull the filter plate (120) upward to reset, and a push rod (121) is fixedly connected to the filter plate (120) directly below the tension spring (122).

5. The sewage treatment system based on nitrification reaction according to claim 4, characterized in that: The bottom of the push rod (121) is curved and inclined inwardly, and a valve plate (160) is abutted against the curved portion of the push rod (121). The valve plate (160) is used to block a sewage discharge hole (133) provided on the partition plate (130) and connected to the sludge chamber (131), so as to limit the discharge of sludge in the sludge chamber (131).

6. The sewage treatment system based on nitrification reaction according to claim 5, characterized in that: A sewage box (161) is fixedly connected to the inner wall of the partition plate (130) at the bottom of the valve plate (160). The sewage box (161) passes through the partition plate (130) and the processing tank (100) and is connected to the outside. Under normal conditions, the valve plate (160) and the top of the sewage box (161) are misaligned, so that the sewage box (161) is separated from the sludge chamber (131). When the valve plate (160) moves inward, the sludge chamber (131) is connected to the sewage box (161), so that the sludge at the bottom of the sludge chamber (131) is discharged along the sewage box (161).

7. The sewage treatment system based on nitrification reaction according to claim 1, characterized in that: The compression part (200) comprises a piston cylinder (210) fixedly connected to the inner wall of the treatment tank (100) and a piston rod (220) movably arranged in the piston cylinder (210); the piston rod (220) is fixedly arranged at the top of the filter plate (120); an air supply pipe (211) is arranged between the top of the piston cylinder (210) and the sewage chamber (132) to connect the two; and a one-way valve (212) is arranged in the air supply pipe (211) and the air supply pipe arranged at the top of the piston cylinder (210).

8. The sewage treatment system based on nitrification reaction according to claim 1, characterized in that: A bearing plate (124) is sleeved on the outer ring of the sleeve (110) located at the top of the partition plate (130). The bearing plate (124) is slidably connected to the sleeve (110). The bearing plate (124) is larger than the inner diameter of the inner wall at the top of the partition plate (130). A traction rope (123) that passes through the partition plate (130) is fixedly connected between the two ends of the bearing plate (124) and the filter plate (120). The traction rope (123) is arranged opposite to the piston cylinder (210).

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