A fast-seepage agricultural and forestry non-point source interception device

Abstract

The present application relates to a fast-infiltration agricultural and forestry non-point source interception device, which relates to the field of agricultural and forestry non-point source pollution control, including a flow ditch and two sedimentation tanks, the flow ditch and the two sedimentation tanks are connected by a three-way drainage pipe, a mechanical filter structure and an ecological filter structure are arranged in the flow ditch, a partition is installed in the middle of the sedimentation tank, and the sedimentation tank is divided into an anaerobic tank and an aerobic tank by the partition; a plurality of baffles are arranged in the anaerobic tank for retaining polluted water sources and performing anaerobic decomposition; a plurality of vertical biofilm decomposition tubes are arranged in the aerobic tank for degrading N and P pollutants in the polluted water sources. The present invention arranges an anaerobic tank and an aerobic tank in the sedimentation tank, nitrate ions and phosphorus ions can be preliminarily decomposed in the anaerobic tank, and aerobic bacteria are planted in the aerobic tank, which can promote the decomposition or sedimentation of N and P ions in the polluted water sources, thereby removing N and P ions in the polluted water sources.

Description

Technical Field

[0001] The present application relates to the field of agricultural and forestry non-point source pollution control, and in particular to a fast-infiltration agricultural and forestry non-point source interception device. Background Art

[0002] Non-point source pollution, also known as non-point source pollution, refers to pollution that enters the natural environment (such as the atmosphere, water, soil, etc.) without a fixed source. This type of pollution is characterized by dispersed and diverse pollution sources and no clear sewage outlets, so monitoring and control are relatively difficult. Non-point source pollution can be divided into two types: broad and narrow. Non-point source pollution in a broad sense refers to the emission of pollutants in the form of a large number of dispersed or small point sources over a large area. These pollutants will mix in the natural environment (atmosphere, soil, water bodies, etc.), endangering human health or reducing environmental quality. Non-point source pollution in a narrow sense mainly refers to the pollution caused by pollutants entering the receiving water body from non-specific locations through runoff, leaching, etc. under the action of precipitation or snowmelt.

[0003] Usually, since agricultural planting activities require fertilization, there is a large amount of N and P pollution in agricultural and forestry non-point source pollution. When dealing with it, it is necessary to quickly cause the nitrogen (N) and phosphorus (P) pollutants suspended in the runoff to settle. Referring to the authorization announcement number CN220977938U, an agricultural non-point source pollutant interception device and an interception system containing the same are disclosed, which belong to the technical field of agricultural non-point source pollution control. The lower part of the base is provided with a water outlet structure connected to the installation cavity, which can be discharged from the water outlet structure through the pollutant coarse material interception bucket and the pollutant fine material interception assembly.

[0004] In the above cases, fine pollutants in the water are mainly filtered out by the cooperation of the pollutant coarse material interception bucket and the filter element. However, N and P pollutants are mainly dissolved in the water in ionic state. The filter element is generally effective in removing pollutants in ionic state. A large amount of N and P pollutants will still exist in the discharged wastewater, which can easily cause ecological pollution after gathering in the lake.

[0005] Therefore, the purpose of this application is to propose a fast-infiltration agricultural and forestry non-point source interception device to solve the above-mentioned problems. Summary of the invention

[0006] In order to solve the problems raised in the background technology, the present application provides a fast-infiltration agricultural and forestry non-point source interception device.

[0007] The present application provides a fast-infiltration agricultural and forestry non-point source interception device, comprising a flow ditch and two sedimentation tanks, the flow ditch and the two sedimentation tanks are connected by a three-way drainage pipe, a mechanical filter structure and an ecological filter structure are arranged in the flow ditch, a partition is installed in the middle of the sedimentation tank, and the sedimentation tank is divided into an anaerobic tank and an aerobic tank by the partition;

[0008] The anaerobic tank is equipped with multiple baffles to retain polluted water for anaerobic decomposition;

[0009] A plurality of vertical biofilm decomposition tubes are arranged in the aerobic pool, an interlayer sleeve is arranged in the vertical biofilm decomposition tube, a water outlet pipe is arranged in the interlayer sleeve, a plurality of curled arc plates are arranged in an array on the outer surface of the interlayer sleeve, and a plurality of aerobic bacteria culture balloons are evenly arranged on the arc plates, which are used to degrade N and P pollutants in polluted water sources.

[0010] Preferably, a plurality of water permeable holes are evenly opened on the outer surface of the outlet pipe, and a plurality of water seepage holes are opened on the surface of the interlayer sleeve, wherein the aperture of the water permeable holes is smaller than the aperture of the water seepage holes, the water seepage holes on the interlayer sleeve are arranged between two adjacent arc plates, and a top sleeve is also mounted on the top of the vertical biofilm decomposition tube, and a plurality of water outlet holes are opened on the surface of the top sleeve, and the height of the water outlet holes is lower than the height of the edge of the aerobic tank.

[0011] Preferably, a U-shaped water inlet pipe is installed in the bottom end of the aerobic pool, a connecting pipe is provided between the U-shaped water inlet pipe and the bottom end of the water outlet pipe, and an air inlet pipe is provided above the U-shaped water inlet pipe, a butt joint pipe is connected to the bottom of the water outlet pipe, and a plurality of butt joint pipes are connected to the air inlet pipe in a hook shape.

[0012] Preferably, a blower is provided between the two sedimentation tanks, the tail ends of the air inlet pipes in the two aerobic tanks extend and dock with the two output ports of the blower respectively, and a photovoltaic panel assembly is installed on one side of the blower to power the blower.

[0013] Preferably, a U-shaped circulation pipe is installed in the top of the aerobic tank, a small discharge pipe is arranged between the U-shaped circulation pipe and the top of the outlet pipe, and the output end of the U-shaped circulation pipe extends into the anaerobic tank.

[0014] Preferably, the surface of the baffle is also provided with a plurality of penetration holes, the penetration holes on the front side of the baffle are evenly arranged on the front side, the penetration holes on the rear side of the baffle are evenly arranged in left and right halves, and the penetration holes on the rear side surfaces of two adjacent front and rear baffles are staggered to cover the left and right halves.

[0015] Preferably, a plurality of meshes are equidistantly installed in the baffle, and a plurality of anaerobic bacteria culture balloons are evenly distributed on the meshes, and denitrifying bacteria can be planted in the anaerobic bacteria culture balloons.

[0016] Preferably, the mechanical filter structure includes a stone platform base and an intercepting filter. The stone platform base is arranged in a trapezoidal shape. A water flow trough is cast on the top of the stone platform base. The intercepting filter is installed in the water flow trough, and the intercepting filter is arranged close to the inclined surface of the stone platform base.

[0017] Preferably, the ecological filter structure includes a plurality of positioning frames, wire meshes are fixedly installed in the positioning frames, and aquatic plants are planted around the wire meshes.

[0018] Preferably, the aquatic plants can be planted in a mixture of one or more of water plantain, cattail and reed.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] 1. The present invention discloses a fast-infiltration agricultural and forestry non-point source interception device, in which an anaerobic tank and an aerobic tank are arranged in a sedimentation tank. The anaerobic tank can preliminarily decompose nitrate ions and phosphorus ions, while the aerobic tank is planted with aerobic bacteria, which can promote the decomposition or sedimentation of N and P ions in polluted water sources, thereby removing N and P ions in the polluted water sources.

[0021] 2. The present invention provides a fast-infiltration agricultural and forestry non-point source interception device, in which a photovoltaic panel assembly is arranged between the sedimentation tanks, which can utilize solar energy to power a blower. The air can be transported to the outlet pipe through the blower. When the polluted water in the outlet pipe passes through the interlayer sleeve and is discharged from between the arc plates, the air carried can provide oxygen for aerobic bacteria to decompose N and P ions, thereby facilitating the improvement of treatment efficiency.

[0022] 3. The present invention provides a fast-seepage agricultural and forestry non-point source interception device. The mechanical filter structure arranged in the flowing ditch includes a stone platform base and an interception filter. After intercepting the particulate matter in the polluted water source, the interception filter will continue to fall under the action of gravity, and eventually settle to the bottom of the flowing ditch along the inclined edge of the stone platform base, and the flocculants in the water will eventually settle under the pull of the particulate matter, making it easy to remove.

[0023] 4. The present invention provides a fast-seepage agricultural and forestry non-point source interception device. The ecological filter structure arranged in the flowing ditch includes a wire mesh and aquatic plants planted on the wire mesh. The wire mesh can provide support for the aquatic plants to prevent the aquatic plants from being knocked down by the water flow. On the other hand, it can also intercept organisms and large particles in the polluted water source, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of this application;

[0025] Figure 2 It is a schematic diagram of the top view of the structure of the present application;

[0026] Figure 3 It is a schematic diagram of the structure in the sedimentation tank of this application;

[0027] Figure 4 It is a schematic diagram of the structure of the aerobic tank and the anaerobic tank in this application;

[0028] Figure 5 It is the layout diagram of the outlet pipe structure of this application;

[0029] Figure 6 This is a schematic diagram of the structure of the vertical biofilm decomposition tube of the present application;

[0030] Figure 7 This is a schematic diagram of the disassembly of the vertical biofilm decomposition tube structure of the present application;

[0031] Figure 8 It is a disassembled schematic diagram of the baffle structure of the present application;

[0032] Fig. 9 is a schematic diagram of the structure in the flow channel of the present application;

[0033] Fig.10 It is a schematic diagram of the ecological filter structure of this application.

[0034] Explanation of reference numerals: 1. Flow ditch; 11. Mechanical filter structure; 1101. Stone platform base; 1102. Flow trough; 1103. Intercepting filter; 12. Ecological filter structure; 1201. Positioning frame; 1202. Wire mesh; 1203. Aquatic plants; 2. Sedimentation tank; 21. Baffle; 22. Anaerobic tank; 2201. Baffle; 2202. Infiltration hole; 2203. Mesh; 2204. Anaerobic bacteria culture balloon; 23. Aerobic tank; 2301. Vertical Film decomposition tube; 2303, interlayer sleeve; 2304, water outlet pipe; 2305, water seepage hole; 2306, arc plate; 2307, aerobic bacteria culture balloon; 2308, water permeable hole; 2309, top sleeve; 2310, water outlet hole; 2311, U-shaped water inlet pipe; 2312, connecting pipe; 2313, air inlet pipe; 2314, butt pipe; 2315, U-shaped circulation pipe; 2316, small discharge pipe; 3, three-way drainage pipe; 4, blower; 41, photovoltaic panel assembly. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] Embodiment 1

[0037] Reference Figure 1 , 2, 9, and 10, the present application discloses a fast infiltration type agricultural and forestry non-point source interception device, including a flow ditch 1 and two sedimentation tanks 2, the flow ditch 1 and the two sedimentation tanks 2 are connected by a three-way drainage pipe 3, a mechanical filter structure 11 and an ecological filter structure 12 are arranged in the flow ditch 1, the mechanical filter structure 11 includes a stone platform base 1101 and an interception filter 1103, the stone platform base 1101 is arranged in a trapezoidal shape, a water flow trough 1102 is cast on the top of the stone platform base 1101, and the interception filter 1103 is installed on the bottom of the stone platform base 1101. The water trough 1102 is provided with an intercepting filter 1103 close to the inclined surface of the stone platform base 1101. The ecological filter structure 12 includes a plurality of positioning frames 1201. A wire mesh 1202 is fixedly installed in the positioning frame 1201. Aquatic plants 1203 are planted around the wire mesh 1202. The aquatic plants 1203 can be mixed with one or more of water plantain, cattail, and reed. Specifically, when the polluted water source converges from the farmland ditch into the flow ditch 1, in order to perform preliminary filtration treatment on the polluted water source The ecological filter structure 12 arranged in the flow ditch 1 is composed of a wire mesh 1202 and aquatic plants 1203 attached to the wire mesh 1202. The wire mesh 1202 can support the aquatic plants 1203 while filtering larger substances and organisms to prevent the aquatic plants 1203 from being washed down by water. The planted aquatic plants 1203 can also intercept pollutants and suspended matter in the water. In addition, plants such as water plantain, cattail and reed can also absorb N and P ions in the polluted water source. In addition, a mechanical filter structure 11 is provided in the flow ditch 1, including a stone platform base 1101 and an intercepting filter 1103. After intercepting the particulate matter in the polluted water source, the intercepting filter 1103 will continue to fall under the action of gravity, and eventually settle to the bottom of the flow ditch 1 along the inclined edge of the stone platform base 1101, and the flocculants in the water will eventually settle under the pull of the particulate matter, which can effectively remove suspended matter and particulate matter in the polluted water source.

[0038] Embodiment 2

[0039] Reference Figure 2 , 3, 4, and 8, as an embodiment, a partition 21 is installed in the middle of the sedimentation tank 2, and the sedimentation tank 2 is divided into an anaerobic tank 22 and an aerobic tank 23 by the partition 21. A plurality of baffles 2201 are provided in the anaerobic tank 22 for storing polluted water for anaerobic decomposition. A plurality of infiltration holes 2202 are also provided on the surface of the baffle 2201. The infiltration holes 2202 located on the front side of the baffle 2201 are evenly arranged on the front side, and the infiltration holes 2202 located on the rear side of the baffle 2201 are evenly arranged on the front side. The through holes 2202 are evenly arranged in the left and right halves, and the infiltration holes 2202 on the rear sides of the two adjacent baffles 2201 are staggered in the left and right halves; after the polluted water source passes through the preliminary filtration of the flow ditch 1, it can enter the sedimentation tank 2 through the three-way drainage pipe 3, and the polluted water source entering the anaerobic tank 22 will be intercepted by the baffle 2201 for further sedimentation. After the polluted water source passes through the infiltration holes 2202 and enters the baffle 2201, The infiltration holes 2202 during discharge are only half of the infiltration holes 2202 during entry, and the infiltration holes 2202 on the rear sides of the two adjacent baffles 2201 are staggered to cover half of the surface, which will cause the flow rate of the polluted water source to decrease, and according to the different positions of the infiltration holes 2202 on the rear sides of the baffles 2201, the polluted water source will be guided to flow in a winding manner. In addition, a plurality of meshes 2203 are equidistantly installed in the baffle 2201, and a plurality of anaerobic bacteria culture balloons 2204 are evenly distributed on the meshes 2203, and denitrifying bacteria can be planted in the anaerobic bacteria culture balloons 2204. When the polluted water source enters the interior of the baffle 2201, it will flow through the meshes 2203. At this time, the nitrate ions and phosphorus ions in the polluted water source will contact and react with the denitrifying bacteria inoculated in the anaerobic bacteria culture balloons 2204, which can promote the decomposition and precipitation of N and P ions, and provide conditions for subsequent decomposition.

[0040] Embodiment 3

[0041] Reference Figure 4 , 6As shown in 7, as an embodiment, a plurality of vertical biofilm decomposition tubes 2301 are arranged in the aerobic pool 23, and a barrier sleeve 2303 is set in the vertical biofilm decomposition tube 2301, and a water outlet pipe 2304 is set in the barrier sleeve 2303, and a plurality of water permeable holes 2308 are evenly opened on the outer surface of the water outlet pipe 2304, and a plurality of seepage holes 2305 are opened on the surface of the barrier sleeve 2303, wherein the aperture of the water permeable hole 2308 is smaller than the aperture of the seepage hole 2305, and a plurality of curled arc plates 2306 are arranged in an array on the outer surface of the barrier sleeve 2303, and a plurality of aerobic bacteria culture balloons 2307 are evenly arranged on the arc plates 2306 for degrading N and P pollutants in polluted water sources, and the seepage holes 2305 on the barrier sleeve 2303 are arranged between two adjacent arc plates 2306. In addition, the aerobic pool A U-shaped water inlet pipe 2311 is also installed at the bottom end of 23, and a connecting pipe 2312 is also provided between the U-shaped water inlet pipe 2311 and the bottom end of the outlet pipe 2304. With the cooperation of the U-shaped water inlet pipe 2311, the polluted water source in the anaerobic tank 22 can be transported to each outlet pipe 2304, and due to the water permeable holes 2308 opened on the surface of the outlet pipe 2304, the polluted water source will pass through the water permeable holes 2308 into the interlayer sleeve 2303, and the seepage holes 2305 opened on the interlayer sleeve 2303 will discharge the polluted water source between the adjacent arc plates 2306. When the polluted water source is released outward along the arc plate 2306, it can be released from the aerobic bacteria culture balloon 2307. At this time, the nitrifying bacteria in the aerobic bacteria culture balloon 2307 will decompose the N and P ions in the polluted water source, thereby reducing the N and P ion content in the polluted water source.

[0042] Reference Figure 4 , 6 As shown, in order to release the treated water source to the outside, a top sleeve 2309 is also installed at the top of the vertical biofilm decomposition tube 2301, and a plurality of water outlet holes 2310 are opened on the surface of the top sleeve 2309. The height of the water outlet holes 2310 is lower than the height of the edge of the aerobic pool 23. The polluted water source passes through the cooperation of the aerobic bacteria culture balloon 2307, and the treated water source will flow out from between the arc plates 2306. As the water source gradually increases, the water flow will overflow the top sleeve 2309, and finally be discharged from the water outlet holes 2310 into the aerobic pool 23, and can be released to the outside through the pipe at the end of the aerobic pool 23.

[0043] Furthermore, in order to meet the survival conditions of aerobic bacteria, an air inlet pipe 2313 is provided above the U-shaped water inlet pipe 2311, a butt-joint pipe 2314 is connected to the bottom of the water outlet pipe 2304, and a plurality of butt-joint pipes 2314 are connected to the air inlet pipe 2313 in a hook shape, and a blower 4 is provided between the two sedimentation tanks 2, the tail ends of the air inlet pipes 2313 in the two aerobic tanks 23 are respectively extended and connected to the two output ports of the blower 4, and a photovoltaic panel assembly 41 is installed on one side of the blower 4 for supplying power to the blower 4, and the photovoltaic panel assembly 41 includes a solar panel assembly 41. The photovoltaic panel and the energy storage battery can store electrical energy in the energy storage battery when the solar photovoltaic panel absorbs solar energy. After the cooperation of the voltage stabilizer, the blower 4 can be powered. When the blower 4 is working, the air can be continuously compressed into the air inlet pipe 2313. The air inlet pipe 2313 can release the air to the water outlet pipe 2304 with the cooperation of the docking pipe 2314. At this time, the air can be mixed in the uncontaminated water source. When the contaminated water source contacts the aerobic bacteria culture balloon 2307, the air carried in the contaminated water source can provide oxygen for the aerobic bacteria, thereby meeting the survival conditions of the aerobic bacteria.

[0044] Embodiment 4

[0045] Reference Figure 4 , 5 As shown, as an embodiment of the present invention, a U-shaped circulation pipe 2315 is also installed in the top of the aerobic tank 23, and a discharge pipe 2316 is arranged between the U-shaped circulation pipe 2315 and the top of the outlet pipe 2304, and the output end of the U-shaped circulation pipe 2315 extends to the anaerobic tank 22. When the polluted water source in the outlet pipe 2304 is released at a too fast rate, part of the polluted water source will not be fully decomposed and will enter the U-shaped circulation pipe 2315 through the discharge pipe 2316. At this time, the polluted water source can be released back into the anaerobic tank 22 through the guidance of the U-shaped circulation pipe 2315, and the steps are repeated to ensure that the water source is fully treated.

[0046] The implementation principle of the fast infiltration type agricultural and forestry non-point source interception device in this application is:

[0047] When in use, the polluted water source will gradually flow into the flow ditch 1. At this time, the ecological filter structure 12 set in the flow ditch 1 can initially filter out large pieces of matter, organisms, etc. in the polluted water source. The ecological filter structure 12 includes a wire mesh 1202 and aquatic plants 1203 planted on the wire mesh 1202. The planted aquatic plants 1203 can also filter out pollutants, suspended solids, etc. in the polluted water source. In addition, plants such as water plantain, cattail and reed can also absorb N and P ions in the polluted water source, thereby diluting the pollution. After the N and P pollution in the water source is filtered layer by layer by the ecological filter structure 12, a mechanical filter structure 11 is also arranged near the sedimentation tank 2, including a stone platform base 1101 and an interception filter 1103. After the interception filter 1103 intercepts the particles in the polluted water source, it will continue to fall under the action of gravity and eventually settle to the bottom of the flow ditch 1 along the inclined edge of the stone platform base 1101, and the flocculants in the water will eventually settle under the pull of the particles, which can effectively remove the suspended matter and particles in the polluted water source;

[0048] After being filtered through the flow channel 1, the polluted water source can be released into the sedimentation tank 2 through the three-way drainage pipe 3. The polluted water source entering the sedimentation tank 2 first needs to be preliminarily treated by the anaerobic tank 22. The polluted water source will pass through the water permeable hole 2308 and enter the interlayer sleeve 2303. The seepage hole 2305 opened on the interlayer sleeve 2303 will discharge the polluted water source between the adjacent arc plates 2306. When the polluted water source is released outward along the arc plate 2306, it can be released from the aerobic bacteria culture balloon 2307. At this time, the nitrifying bacteria in the aerobic bacteria culture balloon 2307 will treat the polluted water. In addition, in order to improve the treatment efficiency of polluted water sources, a plurality of meshes 2203 are arranged in the baffle plate 2201, and a plurality of anaerobic bacteria culture balloons 2204 are evenly distributed on the meshes 2203. When the polluted water source enters the baffle plate 2201, it will flow through the meshes 2203. At this time, the nitrate ions and phosphorus ions in the polluted water source will contact and react with the denitrifying bacteria inoculated in the anaerobic bacteria culture balloons 2204, which can promote the decomposition and sedimentation of N and P ions and provide conditions for subsequent decomposition.

[0049] Afterwards, with the cooperation of the U-shaped water inlet pipe 2311, the polluted water source in the anaerobic tank 22 can be transported to each outlet pipe 2304, and due to the water permeable holes 2308 opened on the surface of the outlet pipe 2304, the polluted water source will pass through the water permeable holes 2308 and enter the interlayer sleeve 2303, and the seepage holes 2305 opened on the interlayer sleeve 2303 will discharge the polluted water source between the adjacent arc plates 2306. When the polluted water source is released outward along the arc plate 2306, it can be released from the aerobic bacteria culture balloon 2307, and at this time, the nitrifying bacteria in the aerobic bacteria culture balloon 2307 will It will decompose the N and P ions in the polluted water source and reduce the content of N and P ions in the polluted water source. In order to meet the inventory conditions of aerobic bacteria and improve the treatment effect of polluted water sources, a blower 4 is also provided. When the blower 4 is working, it can continuously compress the air into the air inlet pipe 2313. The air inlet pipe 2313, with the cooperation of the docking pipe 2314, can release the air into the water outlet pipe 2304. At this time, the air can be mixed in the uncontaminated water source. When the polluted water source contacts the aerobic bacteria culture balloon 2307, the air carried in the polluted water source can provide oxygen for the aerobic bacteria.

[0050] 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 fast-seepage agricultural and forestry non-point source interception device, comprising a flow ditch (1) and two sedimentation tanks (2), wherein the flow ditch (1) and the two sedimentation tanks (2) are connected via a three-way drainage pipe (3), characterized in that: A mechanical filter structure (11) and an ecological filter structure (12) are arranged in the flow ditch (1), a partition (21) is installed in the middle of the sedimentation tank (2), and the sedimentation tank (2) is divided into an anaerobic tank (22) and an aerobic tank (23) by the partition (21); The anaerobic pool (22) is provided with a plurality of baffles (2201) for storing polluted water for anaerobic decomposition. The surface of the baffle (2201) is also provided with a plurality of infiltration holes (2202). The infiltration holes (2202) located on the front side of the baffle (2201) are evenly arranged on the front side. The infiltration holes (2202) located on the rear side of the baffle (2201) are evenly arranged in two halves, and the infiltration holes (2202) on the rear side of the two adjacent baffles (2201) are staggered so that the half sides are covered with the left and right halves. The baffle (2201) is also evenly installed with a plurality of mesh sheets (2203). The mesh sheets (2203) are evenly arranged with a plurality of anaerobic bacteria culture balloons (2204). Denitrifying bacteria are planted in the anaerobic bacteria culture balloons (2204). A plurality of vertical biofilm decomposition tubes (2301) are arranged in the aerobic pool (23), a barrier sleeve (2303) is sleeved in the vertical biofilm decomposition tube (2301), a water outlet pipe (2304) is sleeved in the barrier sleeve (2303), a plurality of curled arc plates (2306) are arranged in an array on the outer surface of the barrier sleeve (2303), and a plurality of aerobic bacteria culture balloons (2307) are evenly arranged on the arc plates (2306) for degrading N and P pollutants in polluted water sources, a plurality of water permeable holes (2308) are evenly opened on the outer surface of the water outlet pipe (2304), and a plurality of water seepage holes (2305) are opened on the surface of the barrier sleeve (2303), wherein the aperture of the water permeable hole (2308) is smaller than the aperture of the water seepage hole (2305), and the water seepage holes (2308) on the barrier sleeve (2303) are smaller than the aperture of the water seepage hole (2305). 305) is arranged between two adjacent arc plates (2306), a top sleeve (2309) is also mounted on the top of the vertical biofilm decomposition tube (2301), and a plurality of water outlet holes (2310) are opened on the surface of the top sleeve (2309), the height of the water outlet holes (2310) is lower than the height of the edge of the aerobic pool (23), a U-shaped water inlet pipe (2311) is also installed in the bottom end of the aerobic pool (23), a connecting pipe (2312) is also arranged between the bottom ends of the U-shaped water inlet pipe (2311) and the water outlet pipe (2304), an air inlet pipe (2313) is also arranged above the U-shaped water inlet pipe (2311), a butt pipe (2314) is also connected to the bottom of the water outlet pipe (2304), and a plurality of butt pipes (2314) are connected to the air inlet pipe (2313) in a hook shape.

2. The fast infiltration type agricultural and forestry non-point source interception device according to claim 1 is characterized by: A blower (4) is also provided between the two sedimentation tanks (2); the tail ends of the air inlet pipes (2313) in the two aerobic tanks (23) are respectively extended and connected to the two output ports of the blower (4); and a photovoltaic panel assembly (41) is also installed on one side of the blower (4) for supplying power to the blower (4).

3. The fast infiltration type agricultural and forestry non-point source interception device according to claim 1 is characterized by: A U-shaped circulation pipe (2315) is also installed in the top of the aerobic tank (23), a small discharge pipe (2316) is provided between the top of the U-shaped circulation pipe (2315) and the outlet pipe (2304), and the output end of the U-shaped circulation pipe (2315) extends into the anaerobic tank (22).

4. The fast infiltration type agricultural and forestry non-point source interception device according to claim 1 is characterized by: The mechanical filter screen structure (11) comprises a stone platform base (1101) and an interception filter screen (1103); the stone platform base (1101) is arranged in a trapezoidal shape; a water flow trough (1102) is cast on the top of the stone platform base (1101); the interception filter screen (1103) is installed in the water flow trough (1102), and the interception filter screen (1103) is arranged close to the inclined surface of the stone platform base (1101).

5. The fast infiltration type agricultural and forestry non-point source interception device according to claim 1 is characterized by: The ecological filter structure (12) comprises a plurality of positioning frames (1201), wherein a wire mesh (1202) is fixedly installed in the positioning frames (1201), and aquatic plants (1203) are planted and wrapped around the wire mesh (1202).

6. The fast infiltration type agricultural and forestry non-point source interception device according to claim 5 is characterized by: The aquatic plants (1203) are planted in a mixed manner using one or more of water plantain, cattail, and reed.

Images