Solar sulfur autotrophic nitrogen removal ship for in-situ nitrogen removal of river water

Abstract

The invention relates to a solar sulfur autotrophic nitrogen removal ship for in-situ nitrogen removal of river water, which comprises a gas stripping device, a nitrification area and a denitrification area arranged on the ship, the gas stripping device is connected with a main gas stripping pipe and a plurality of branch gas stripping pipes, the nitrification area is connected with a water inlet pipe, an inlet of the water inlet pipe is close to a propeller of the ship, and the main gas stripping pipe is connected with the bottom of the water inlet pipe; a plurality of branch gas stripping pipes are uniformly distributed in the nitrification area and are used for stripping sewage to the upper part of the nitrification area; a plurality of carrier parts I capable of translating are arranged at the lower part of the nitrification area, the carrier parts I are filled with biological load particles, a corrugated carrier part II is arranged at the upper part of the nitrification area, and the carrier part II is filled with biological load filler; a corrugated carrier part III is arranged in the denitrification region, the carrier part III is filled with biological loading filler and biological loading particles, the side surface, facing the upstream side of the denitrification region, of the carrier part III is a porous plate, the side surface, facing the downstream side of the denitrification region, of the carrier part III is a mesh surface, and the mesh surface reduces the resistance of sewage passing through the carrier part III.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and particularly relates to a solar sulfur autotrophic denitrification ship for in-situ denitrification of river water. Background Art

[0002] There are numerous rivers and lakes in China, with a vast water area. Many rivers and their branches flow through populated areas, bringing fresh water resources to these areas. After industrial sewage and domestic sewage are treated, they are discharged into rivers, and the remaining pollutants in the sewage are decomposed by the purification ability of the natural environment. When the sewage treatment fails to meet the standards, enterprises secretly discharge or leak sewage, or in remote areas where the water treatment capacity is poor, and the sewage is directly discharged into rivers, the pollution load of the rivers will increase. When it exceeds the self-purification limit of the rivers, river pollution will be caused. In addition, some water bodies such as ponds, tributaries of rivers, lakes, and river channels have poor fluidity, and the growth of water body algae causes water eutrophication, exacerbating water deterioration, resulting in excessive ammonia nitrogen and total nitrogen pollutants in the water body. Coupled with the residues of fertilizers and pesticides used in crops and other plants mixing into the water body with rainwater, the water body even shows an uncomfortable black and smelly color or emits an unpleasant smell.

[0003] Currently, for the treatment of these water body pollutions, measures such as non-point source control, surface debris cleaning, bottom dredging, ecological restoration, and clean water replenishment are mainly taken. At the same time, a large amount of carbon source needs to be artificially added during the treatment process, resulting in a significant increase in the sewage treatment cost. And if the type or quantity of the added carbon source is not properly controlled, there will be a hidden problem of secondary pollution of the remaining organic carbon source. In addition, in the traditional treatment process, the reflux ratio of the nitrification liquid after aerobic biochemical treatment of sewage also needs to be increased, and the sludge generated by biochemical treatment also needs to be treated through procedures such as precipitation in the follow-up. The actual sewage treatment process is lengthy and the treatment efficiency is not high. The sewage treatment methods for waters such as rivers and lakes often require the support of large-scale ecological or water conservancy project construction, and are equipped with sewage treatment stations and complete sets of equipment, investing a large amount of facilities, manpower, and funds. The polluted waters such as ponds, rivers, and lakes are introduced into fixed sewage treatment facilities on the shore for treatment, and then returned to the water body after treatment.

[0004] This traditional treatment method is prone to cause the idle and waste of resources such as permanent fixed water treatment equipment and facilities, and form high investment costs and operating costs, making it face great difficulties in practical implementation and implementation. Summary of the Invention

[0005] In view of the above problems, the present invention provides a solar sulfur autotrophic denitrification boat for in-situ denitrification of river water, which includes an air-lifting device, a nitrification zone, a denitrification zone and solar panels installed on the boat. The air-lifting device is connected to a main air-lifting pipe and several sub-air-lifting pipes. The upstream side of the nitrification zone is connected to a water inlet pipe, and the inlet of the water inlet pipe is close to the propeller at the tail of the boat. The main air-lifting pipe is connected to the bottom of the water inlet pipe for air-lifting water intake. Several sub-air-lifting pipes are evenly distributed in the nitrification zone to lift the sewage to the upper part of the nitrification zone, and the formed longitudinal up-and-down water flow cooperates with the original lateral water flow in the nitrification zone.

[0006] Several movable carrier parts one are provided at the lower part of the nitrification zone, and biological load particles are filled in the carrier parts one. A corrugated carrier part two is provided at the upper part of the nitrification zone, and biological load fillers are filled in the carrier part two.

[0007] A corrugated carrier part three is provided in the denitrification zone, and biological load fillers and biological load particles are filled in the carrier part three. The sides of the carrier part three facing the upstream side of the denitrification zone are all porous plates, and the sides facing the downstream side of the denitrification zone are all mesh surfaces, and the mesh surfaces can reduce the resistance of the sewage passing through the carrier part three.

[0008] The present invention adopts the treatment method of sulfur autotrophic nitrification and denitrification for pollutants such as ammonia nitrogen and total nitrogen in water bodies of waters such as ponds, rivers, lakes and river channels, and then in the form of a boat-mounted structure, the nitrification zone and the denitrification zone are arranged on the boat, which has the advantages of in-situ treatment, fast speed, convenience and mobility. The water inlet pipe takes water near the propeller of the boat. The rotation of the propeller drives the disturbance of the nearby water body. Therefore, the sewage quality here is relatively uniform, eliminating the need for a homogenization tank or a regulating tank. Moreover, there are fewer aquatic plants and sludge in the water body here, eliminating the need for filtration pretreatment. At the same time, the rotation of the propeller will introduce the gas in the air into the water body and the water inlet pipe, reducing the gas consumption of the main air-lifting pipe, saving the air-lifting energy consumption and improving the air-lifting efficiency. The main air-lifting pipe is used to supply air to the water inlet pipe to promote the sewage to enter the nitrification zone along the water inlet pipe. In the nitrification zone, the sewage generally flows laterally from the upstream side to the downstream side. Several sub-air-lifting pipes lift the sewage gas at the corresponding positions to the upper part of the nitrification zone, and the sewage flows down naturally, thereby forming several longitudinal up-and-down water flows, which cooperate with the original lateral water flow to improve the water body disturbance in the nitrification zone, promote the biochemical reaction and improve the sewage treatment efficiency. The biological load particles in the carrier part one and the biological load fillers in the carrier part two are both loaded with sulfur autotrophic nitrifying bacteria, and the biological load particles and biological load fillers in the denitrification zone are both loaded with sulfur autotrophic denitrifying bacteria.

[0009] Optionally, a square sulfur autotrophic treatment tank and a gas source are placed on the vessel. The gas source is connected to the main air lift pipe and the sub-air lift pipes. A nitrification zone and a denitrification zone are sequentially arranged in the sulfur autotrophic treatment tank. The top of one end of the sulfur autotrophic treatment tank is connected to the water inlet pipe, and the other end is provided with a water outlet pipe to discharge the treated water body into the river water. The water inlet pipe extends downward under the ship. A partition plate is arranged between the nitrification zone and the denitrification zone, and a water passing hole is arranged in the middle of the partition plate for inputting the water body treated in the nitrification zone into the denitrification zone.

[0010] Optionally, the several sub-air lift pipes are uniformly arranged along the length direction of the nitrification zone. The bottom of the sub-air lift pipe is at the bottom of the nitrification zone, and the top of the sub-air lift pipe is higher than the liquid level of the nitrification zone.

[0011] The several sub-air lift pipes are arranged in a row, and a row of biochemical load components are respectively arranged on both sides of the sub-air lift pipe. The biochemical load component includes several stacked carrier parts I. The carrier part I is a square wire cage, and the aperture of the mesh hole is smaller than the particle size of the biological load particles.

[0012] The bottom of the carrier part I is slidably connected to the track. The track is parallel to the length direction of the nitrification zone. A driving device is arranged on the upstream side or the downstream side of the nitrification zone for driving the carrier part I to move back and forth along the track.

[0013] Further optionally, a driving device is respectively arranged at the position corresponding to the middle of each biochemical load component on the upstream side of the nitrification zone, and a driving device is respectively arranged at the position corresponding to the middle of each biochemical load component on the downstream side of the nitrification zone, that is, four driving devices are arranged at the lower part of the nitrification zone.

[0014] In one biochemical load component, the two adjacent upper and lower carrier parts I are respectively connected to the two corresponding driving devices of this biochemical load component, and one driving device is connected in parallel with several carrier parts I.

[0015] Further optionally, the carrier part I is a long and flat square wire cage. The top surface of the carrier part I is evenly distributed with concave and convex wave valleys and wave peaks. In the transverse and longitudinal directions of this top surface, the wave valleys and wave peaks are alternately arranged, and the other side surfaces of the carrier part I are flat surfaces.

[0016] Optionally, the carrier part II includes several inclined square wire cages connected end to end. The carrier part II is placed horizontally, so that the carrier part II forms a corrugated shape with wave peaks and wave valleys. The wave peaks are close to the liquid level of the nitrification zone, and the wave valleys are close to the uppermost carrier part I.

[0017] The material of the biological load filler is plastic or fiber, such as conventional suspended fillers (hollow balls, cascade rings, Raschig rings, Pall rings, etc.). The microbial film is loaded on the wall of the filler, and the sewage can be biochemically treated.

[0018] Optionally, the structure of the third carrier part is the same as that of the second carrier part. The third carrier part includes a number of inclined square cages connected end to end. The third carrier part is placed horizontally, so that the third carrier part forms a corrugated shape with wave crests and wave troughs. The wave crests are close to the liquid level of the denitrification zone, and the wave troughs are close to the bottom of the denitrification zone.

[0019] The water-facing surface of the cages in the third carrier part is a perforated plate, which is beneficial for the sludge in the sewage to slide down along the perforated plate, facilitating the separation of mud and water. The through holes on the perforated plate are distributed in a matrix, and there is a gap between two vertical rows of through holes, which serves as the sliding channel for the sludge. The other sides of the cages in the third carrier part are mesh surfaces. The aperture of the through holes on the perforated plate and the aperture of the mesh holes are both larger than the particle size of the load particles inside the third carrier part.

[0020] Further optionally, a horizontally arranged central shaft is provided in the middle of the third carrier part. One end of the central shaft is rotatably connected to the upstream side wall of the denitrification zone, and the other end passes through the downstream side wall and is then connected to a motor. The central shaft penetrates through the middle of all the cages in the third carrier part, and the motor drives the third carrier part to rotate through the central shaft, which is beneficial for the uniform distribution of the internal biological load fillers and biological load particles. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the solar sulfur autotrophic denitrification ship for in-situ denitrification of river water;

[0022] Figure 2 is a schematic diagram of the cooperation between the first carrier part and the track.

[0023] In the drawings, 1 - nitrification zone, 2 - denitrification zone, 3 - main air-lift pipe, 4 - sub-air-lift pipes, 5 - water inlet pipe, 6 - first carrier part, 7 - second carrier part, 8 - third carrier part, 9 - central shaft, 10 - sulfur autotrophic treatment tank, 11 - driving device, 12 - track. Detailed Embodiment

[0024] This embodiment provides a solar sulfur autotrophic denitrification ship for in-situ denitrification of river water, as Figure 1 - Figure 2 shown, which includes an air-lift device, a nitrification zone 1, a denitrification zone 2 and solar panels installed on the ship. The air-lift device is connected to the main air-lift pipe 3 and a number of sub-air-lift pipes 4. The upstream side of the nitrification zone 1 is connected to the water inlet pipe 5, and the inlet of the water inlet pipe 5 is close to the propeller at the tail of the ship. The main air-lift pipe 3 is connected to the bottom of the water inlet pipe 5 for air-lift water intake; a number of sub-air-lift pipes 4 are evenly distributed in the nitrification zone 1 for lifting the sewage to the upper part of the nitrification zone 1, so that the longitudinal up-and-down water flow formed cooperates with the original transverse water flow in the nitrification zone 1;

[0025] A number of movable carrier parts 6 are provided at the lower part of the nitrification zone 1, and biological load particles are filled in the carrier parts 6. A corrugated second carrier part 7 is provided at the upper part of the nitrification zone 1, and biological load fillers are filled in the second carrier part 7.

[0026] Inside the denitrification zone 2, there is a corrugated carrier part three 8. The carrier part three 8 is filled with biological load fillers and biological load particles. The side surfaces of the carrier part three 8 facing the upstream side of the denitrification zone are all porous plates, and the side surfaces facing the downstream side of the denitrification zone are all mesh surfaces. The porous plates are beneficial for the sedimentation of sludge in the sewage, and the mesh surfaces can reduce the resistance of the sewage passing through the carrier part three 8.

[0027] Optionally, a square sulfur autotrophic treatment tank 10 and a gas source are placed on the ship. The gas source is connected to the main air lift pipe 3 and the sub-air lift pipes 4. Inside the sulfur autotrophic treatment tank 10, a nitrification zone 1 and a denitrification zone 2 are arranged in sequence. The top of one end of the sulfur autotrophic treatment tank 10 is connected to the water inlet pipe 5, and the other end is provided with a water outlet pipe to discharge the treated water body into the river water. The water inlet pipe 5 extends downward under the ship. A partition plate is provided between the nitrification zone 1 and the denitrification zone 2, and a water passing hole is provided in the middle of the partition plate for inputting the water body treated in the nitrification zone 1 into the denitrification zone 2. The position of the water outlet pipe above and below the denitrification zone is set according to the actual treatment situation. The air lift device is an existing conventional air lift device.

[0028] Optionally, the several sub-air lift pipes 4 are evenly arranged along the length direction of the nitrification zone 1. The bottom of the sub-air lift pipe 4 is at the bottom of the nitrification zone 1, and the top of the sub-air lift pipe 4 is higher than the liquid level of the nitrification zone 1;

[0029] The several sub-air lift pipes 4 are arranged in a row, and a row of biochemical load components are respectively arranged on both sides of the sub-air lift pipe 4. The biochemical load components include several carrier parts one 6 stacked up and down. The carrier part one 6 is a square wire cage, and the aperture of the mesh holes is smaller than the particle size of the biological load particles;

[0030] The bottom of the carrier part one 6 is slidably connected to the track 12. The track 12 is parallel to the length direction of the nitrification zone 1. A driving device 11 is provided on the upstream side side surface or the downstream side side surface of the nitrification zone 1 for driving the carrier part one 6 to move back and forth along the track 12.

[0031] Further optionally, the track 12 includes two mutually parallel track rods, which can stably support the carrier part one 6; the two ends of the track rods are respectively fixed on the upstream side side surface and the downstream side side surface of the nitrification zone 1. There is a gap between two adjacent carrier parts one 6 up and down, allowing the water body to flow and not affecting the movement of the carrier part one 6.

[0032] Further optionally, a driving device is respectively provided at the position corresponding to the middle of each biochemical load component on the upstream side side surface of the nitrification zone 1, and a driving device is respectively provided at the position corresponding to the middle of each biochemical load component on the downstream side side surface of the nitrification zone 1, that is, four driving devices are provided at the lower part of the nitrification zone 1;

[0033] In a biochemical load component, two adjacent carrier parts 6 are respectively connected to two corresponding driving devices of the biochemical load component, and one driving device is connected in parallel with several carrier parts 6. The driving device is a conventional mechanical device, such as a hydraulic cylinder or other mechanical devices.

[0034] As a specific embodiment, a first biochemical load component and a second biochemical load component are provided in the nitrification zone 1. The front end of the first biochemical load component corresponds to the first driving device, and the rear end corresponds to the second driving device; the front end of the second biochemical load component corresponds to the third driving device, and the rear end corresponds to the fourth driving device; the first driving device is connected in parallel with the carrier parts 6 with odd numbers in the first biochemical load component (that is, the first, third, fifth, etc. from top to bottom) through a rod, and the second driving device is connected in parallel with the carrier parts 6 with even numbers in the first biochemical load component (that is, the second, fourth, sixth, etc. from top to bottom) through a rod. The first and second driving devices can control the adjacent carrier parts 6 to move in opposite directions, so that the water flow passing through these two carrier parts 6 generates a local tangential flow. The water flow will change from longitudinal to obliquely pass through the carrier part 6, increasing the contact opportunity and residence time with the biological load particles in the carrier part 6. When the water flow passes through the next carrier part 6, it changes to a tangential flow in the opposite direction, increasing the microenvironment disturbance of the water body. Similarly, the third driving device is connected in parallel with the carrier parts 6 with odd numbers in the second biochemical load component (that is, the first, third, fifth, etc. from top to bottom) through a rod, and the fourth driving device is connected in parallel with the carrier parts 6 with even numbers in the second biochemical load component (that is, the second, fourth, sixth, etc. from top to bottom) through a rod.

[0035] Further optionally, the carrier part 6 is a long and flat square wire cage, and the top surface of the carrier part 6 is evenly distributed with concave and convex wave valleys and wave peaks. In the transverse and longitudinal directions of the top surface, the wave valleys and wave peaks are alternately arranged, and the other sides of the carrier part 6 are flat surfaces. When the water flow passes through the top surface of the carrier part 6, it encounters the concave and convex wire mesh surface, making the above-mentioned tangential flow more complex, forming a chaotic small vortex flow on the top surface of the carrier part 6. This flow pattern extends to the inside of the carrier part 6, enabling the sewage to fully contact the biological load particles and fully agitating the biological load particles, avoiding uneven distribution phenomena such as particle deposition or agglomeration.

[0036] As described above, the gas lift pipe 4 in the nitrification zone 1 can lift the sewage at the bottom of the nitrification zone 1 above the liquid level. This part of the sewage flows from top to bottom, causing several longitudinal water flows to form in the nitrification zone 1 along its length direction. If the first carrier part 6 is fixedly arranged, then at several places in the first carrier part 6, it will continuously bear the downward water flow, resulting in serious accumulation of carrier particles at these places. The driving device of the present invention pushes the first carrier part 6 to move horizontally back and forth, which can loosen the carrier particles inside and redistribute them evenly. A number of partition mesh sheets can be arranged in the first carrier part 6 to divide the first carrier part 6 into several parts, preventing the carrier particles from aggregating towards the downstream side.

[0037] Optionally, the second carrier part 7 includes several inclined square wire cages connected end to end. The second carrier part 7 is placed horizontally, making the second carrier part 7 form a corrugated shape with wave crests and wave troughs. The wave crests are close to the liquid level of the nitrification zone 1, and the wave troughs are close to the uppermost first carrier part 6.

[0038] The biological loading filler is made of plastic or fiber, such as conventional suspended fillers (hollow balls, cascade rings, Raschig rings, Pall rings, etc.). The microbial film is loaded on the wall of the filler, which can perform biochemical treatment on the sewage.

[0039] Both sides of the second carrier part 7 are detachably installed on the inner walls on both sides of the nitrification zone 1.

[0040] The inclined wire cages of the second carrier part 7 can receive the horizontal and longitudinal water flows, enabling the water flow to pass through each wire cage in sequence, and making full use of the internal biological loading filler as much as possible. The density of the filler is less than that of water, so the filler will float upward. The downward water flows at several places in the nitrification zone 1 can impact the floating filler downward, causing the filler to move downward along the inclined wire cage. After the filler leaves the area of the downward water flow, it floats upward again along the side wall of the wire cage and re-enters the area of the downward water flow, being washed down again. In this way, the filler in the wire cage is evenly distributed both horizontally and vertically.

[0041] According to the sewage flow characteristics (combination of horizontal and vertical) in the nitrification zone 1 of the present invention, different biological carriers are selected. The loaded particles have a relatively large self-weight and are not easily arranged in the upper part of the water body, so they are arranged in layers in the lower first carrier part 6 and can move horizontally to be evenly distributed passively. The loaded filler has a relatively small self-weight and is not easily arranged in the lower part of the water body, so it is arranged in horizontal sub-regions in the upper second carrier part 7 and can be evenly distributed in the second carrier part 7 under the action of the downward water flow and buoyancy.

[0042] Optionally, the structure of the third carrier part 8 is the same as that of the second carrier part 7. The third carrier part 8 includes several inclined square wire cages connected end to end. The third carrier part 8 is placed horizontally, making the third carrier part 8 form a corrugated shape with wave crests and wave troughs. The wave crests are close to the liquid level of the denitrification zone 2, and the wave troughs are close to the bottom of the denitrification zone 2.

[0043] The water-facing side of the cage of the carrier part III 8 is a perforated plate, which is conducive to the sludge in the sewage sliding down along the perforated plate, facilitating the separation of mud and water. The through holes on the perforated plate are arranged in a matrix, and there is a gap between two vertical rows of through holes, and this gap serves as the sliding channel for the sludge; the other sides of the cage of the carrier part III 8 are mesh surfaces, and the aperture of the through holes on the perforated plate and the aperture of the mesh holes are both larger than the particle size of the load particles inside the carrier part III 8.

[0044] Further optionally, a horizontally arranged central shaft 9 is provided in the middle of the carrier part III 8. One end of the central shaft 9 is rotatably connected to the upstream side wall of the denitrification zone 2, and the other end passes through the downstream side wall and is then connected to a motor. The central shaft 9 penetrates through the middle of all the cages of the carrier part III 8, and the motor drives the carrier part III 8 to rotate through the central shaft 9, which is conducive to the uniform distribution of the biological load packing and biological load particles inside.

[0045] Further optionally, a sludge discharge port is provided at the bottom of the denitrification zone 2, and the sludge discharge port is connected to the sludge treatment device on the ship through a pipeline, and the sludge is cleaned after the ship docks.

[0046] The sulfur autotrophic technology generates little or no sludge, but the raw water of the present invention is sewage directly from waters such as rivers, which will carry some sludge. In addition, under the condition of fluctuating raw water quality or abnormal operation, there may be a small amount of sludge. The sewage in the denitrification zone 2 flows horizontally through the carrier part III 8, and the sludge in the water slides down along the sliding channel of the perforated plate. Moreover, since there are multiple cages in the carrier part III 8, that is, there are multiple perforated plates for sludge sliding, which is equivalent to setting up multiple inclined plates for mud-water separation, and the mud-water separation effect is better. The packing in the carrier part III 8 will float, and the particles will sink. The present invention utilizes this characteristic to place the packing and particles together, and then rotate the carrier part III 8. The packing and particles will continuously float and sink, that is, continuously change their positions inside the cage. The packing and particles are always relatively moving, which can achieve a good mixing effect, and can also make the sewage achieve a good mixing effect with the packing and particles, promote the full contact between the sewage and the microorganisms, and improve the treatment efficiency.

[0047] Photovoltaic cells are installed on the top surface or side surface of the ship or the sulfur autotrophic treatment tank to supply power to the driving device, the motor and the air-lifting device.

Claims

1. A solar sulfur autotrophic denitrification vessel for in-situ denitrification of river water, characterized in that: It includes an air lift device, a nitrification zone, a denitrification zone and a solar cell panel installed on the ship. The air lift device is connected to a main air lift pipe and a plurality of branch air lift pipes. The upstream side of the nitrification zone is connected to a water inlet pipe. The inlet of the water inlet pipe is close to the propeller at the stern of the ship. The main air lift pipe is connected to the bottom of the water inlet pipe for extracting water by air. The plurality of branch air lift pipes are evenly distributed in the nitrification zone for lifting sewage to the upper part of the nitrification zone. The vertical up and down water flow formed cooperates with the original horizontal water flow in the nitrification zone. The lower part of the nitrification zone is provided with a plurality of carrier parts 1 capable of translational movement, and the carrier parts 1 are filled with biological load particles, and the upper part of the nitrification zone is provided with a corrugated carrier part 2, and the carrier part 2 is filled with biological load fillers; A corrugated carrier part three is provided in the denitrification zone, and the carrier part three is filled with biological load fillers and biological load particles. The side surfaces of the carrier part three facing the upstream side of the denitrification zone are all porous plates, and the side surfaces facing the downstream side of the denitrification zone are all mesh surfaces, which can reduce the resistance of sewage passing through the carrier part three.

2. The solar sulfur autotrophic denitrification vessel for in-situ denitrification of river water according to claim 1, characterized in that: A square sulfur autotrophic treatment box and an air source are placed on the ship, and the air source is connected to the main air lift pipe and the sub-air lift pipe; a nitrification zone and a denitrification zone are arranged in sequence in the sulfur autotrophic treatment box, the top of one end of the sulfur autotrophic treatment box is connected to a water inlet pipe, and the top of the other end is provided with a water outlet pipe to discharge the treated water into the river; a partition plate is provided between the nitrification zone and the denitrification zone, and a water hole is provided in the middle of the partition plate for inputting the water treated in the nitrification zone into the denitrification zone.

3. The solar sulfur autotrophic denitrification vessel for in-situ denitrification of river water according to claim 1, characterized in that: The plurality of gas lift pipes are evenly arranged along the length direction of the nitrification zone, the bottom of the gas lift pipe is at the bottom of the nitrification zone, and the top of the gas lift pipe is higher than the liquid level of the nitrification zone; A plurality of gas lift pipes are arranged in a row, and a row of biochemical load components are respectively arranged on both sides of the gas lift pipes, and the biochemical load components include a plurality of carrier parts stacked up and down, and the carrier part is a square mesh cage; The bottom of the carrier part 1 is slidably connected to the track, which is parallel to the length direction of the nitrification zone. A driving device is provided on the upstream side or downstream side of the nitrification zone to drive the carrier part 1 to move back and forth along the track.

4. The solar sulfur autotrophic denitrification vessel for in-situ denitrification of river water according to claim 3, characterized in that: A driving device is provided on the upstream side of the nitrification zone corresponding to the middle of each biochemical load component, and a driving device is provided on the downstream side of the nitrification zone corresponding to the middle of each biochemical load component; In a biochemical load component, two upper and lower adjacent carrier parts 1 are respectively connected to two driving devices corresponding to the biochemical load component, and one driving device is connected in parallel to a plurality of carrier parts 1.

5. The solar sulfur autotrophic denitrification vessel for in-situ denitrification of river water according to claim 1, characterized in that: The carrier part 1 is a long flat square mesh cage, and the top surface of the carrier part 1 is evenly distributed with undulating troughs and crests. The troughs and crests are alternately arranged in the horizontal and vertical directions of the top surface, and the other side surfaces of the carrier part 1 are flat.

6. The solar sulfur autotrophic denitrification vessel for in-situ denitrification of river water according to claim 1, characterized in that: The carrier part 2 comprises a plurality of inclined square mesh cages connected end to end, and the carrier part 2 is placed transversely so that the carrier part 2 forms a corrugated shape with crests and troughs, the crests are close to the liquid surface of the nitrification zone, and the troughs are close to the uppermost carrier part 1; The material of bioload filler is plastic or fiber, and the wall of the filler is loaded with microbial film, which can carry out biochemical treatment of sewage.

7. The solar sulfur autotrophic denitrification vessel for in-situ denitrification of river water according to claim 1, characterized in that: The structure of the carrier part three is the same as that of the carrier part two. The carrier part three includes a plurality of inclined square mesh cages connected end to end. The carrier part three is placed horizontally so that the carrier part three forms a corrugated shape with crests and troughs. The crests are close to the liquid surface of the denitrification zone, and the troughs are close to the bottom of the denitrification zone. The water-facing surface of the mesh cage of the carrier part three is a porous plate, which is conducive to the sludge in the sewage sliding down along the porous plate; the other sides of the mesh cage of the carrier part three are mesh surfaces.

8. The solar sulfur autotrophic denitrification vessel for in-situ denitrification of river water according to claim 7, characterized in that: A horizontally arranged central axis is provided in the middle of the carrier part three, one end of the central axis is rotatably connected to the upstream side wall of the denitrification zone, and the other end passes through the downstream side wall and is then connected to a motor. The central axis passes through the middle of all mesh cages of the carrier part three, and the motor drives the carrier part three to rotate through the central axis, which is beneficial to the uniform distribution of the internal bioburden filler and bioburden particles.

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