Two-stage full autotrophic denitrification device for treating contaminated water body

Abstract

The application provides a two-stage full-process autotrophic microbial denitrification device for treating contaminated water bodies, which is submerged in ammonia-nitrogen contaminated water bodies to complete denitrification treatment, and comprises a floating body, a mesh cover box body fixedly installed at the bottom side of the floating body, a first storage tank and a second storage tank fixedly installed at the top side of the mesh cover box body, a first inspection opening and a discharge plate respectively formed in the second storage tank and the first storage tank, two hinges fixedly installed on the inner wall of the mesh cover box body, and a same perforated partition movably installed between the two hinges, wherein the two sides of the perforated partition are filled with short-cut nitrification immobilized biological gel particles and anaerobic ammonia oxidation immobilized biological gel particles. The application realizes the coupling treatment mode of short-cut nitrification and anaerobic ammonia oxidation, and can automatically adjust the contribution proportion of short-cut nitrification and anaerobic ammonia oxidation according to the ammonia-nitrogen and nitrite-nitrogen concentration and proportion in the water body, has the advantages of remote operation, no need of additional carbon source, saving of oxygen supply energy consumption, high denitrification efficiency, no need of sludge discharge, strong adaptability and the like, and achieves the effect of pollution reduction and carbon reduction.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to a two-stage autotrophic microbial denitrification device for treating ammonia nitrogen-polluted water. Background Technology

[0002] Related research indicates that autotrophic denitrification technologies, such as short-cut nitrification and anaerobic ammonium oxidation, are among the most competitive and promising technologies in the field of biological wastewater denitrification today. Specifically, biological wastewater denitrification generally involves two processes: nitrification and denitrification. The nitrification process is further divided into an ammonia oxidation stage and a nitrite oxidation stage. These two stages are independently catalyzed by ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB), respectively. The first stage involves the oxidation of ammonia nitrogen (NH4) by AOB. + -N is oxidized to nitrite nitrogen NO2. - -N, and the second stage is under the action of NOB, which transforms nitrite nitrogen NO2. - -N is oxidized to nitrate nitrogen NO3. - -N.

[0003] The principle of short-cut nitrification is that, since nitrification is a different reaction catalyzed independently by two types of bacteria with completely different physiological characteristics, the nitrification reaction can be controlled within NO2 levels by appropriately controlling the conditions. - -N; phase, prevents NO2 - Further oxidation of -N; achieves short-cut nitrification. The principle of anaerobic ammonia oxidation is: under anaerobic or anoxic conditions, ANAMMOX bacteria directly oxidize NH4+. + -N is an electron donor, with NO2 as the electron donor. - -N is the electron acceptor, which will accept NH4+. + -N, NO2 - -N is transformed into N2. During this process, NH4... + The oxidation of -N does not require the participation of molecular oxygen, while NO2 - The reduction of -N does not require the participation of organic matter.

[0004] Meanwhile, microbial immobilization (encapsulation) technology immobilizes microorganisms on a carrier, maintaining good mass transfer conditions between the microbial cells and the external water body, and preserving their biological activity. Utilizing immobilization technology to effectively preserve biomass and active enzymes can enhance the function of microorganisms and even the entire treatment process.

[0005] Currently, in the field of water environment and river pollution treatment, there is no comprehensive treatment solution that integrates multiple technologies such as short-cut nitrification, anaerobic ammonia oxidation, and microbial immobilization. When a pollution incident occurs, it is difficult to collect the polluted water and send it to a wastewater treatment plant. To achieve rapid on-site treatment of polluted water in water environments and rivers, this invention aims to integrate short-cut nitrification, anaerobic ammonia oxidation, and microbial immobilization technologies to develop a novel technology that can effectively address ammonia nitrogen pollution in polluted water. Summary of the Invention

[0006] The purpose of this invention is to provide a two-stage, fully autotrophic microbial denitrification device for treating ammonia nitrogen-polluted water in aquatic environments, addressing the problem mentioned in the background art that there are currently no effective technical means, both domestically and internationally, for rapid denitrification and purification in the face of sudden water pollution events. The integrated technology of this solution can effectively reduce nitrogen pollutants generated during sludge disposal, thereby reducing adverse environmental impacts and improving the overall efficiency and environmental friendliness of sludge treatment.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A denitrification device for treating ammonia nitrogen-polluted water includes a float. A mesh cover is fixedly installed on the bottom of the float, and a first storage tank and a second storage tank are fixedly installed on the top of the mesh cover. The bottom of the first and second storage tanks are respectively provided with a first inspection port and a second inspection port. Two hinges are fixedly installed on the inner wall of the mesh cover, and a perforated partition is movably installed between the two hinges. The two sides of the perforated partition are filled with short-range nitrification immobilized biogel particles and anaerobic ammonia oxidation immobilized biogel particles. A movable pipe is installed at the bottom of the second inspection port, and the other end of the movable pipe is adapted to the anaerobic ammonia oxidation immobilized biogel particles. A propeller and a steering mechanism are fixedly installed on both sides of the mesh cover, and a solar power generation component and a central processing unit are fixedly installed on the top of the float.

[0009] Furthermore, both the first and second inspection ports are equipped with a feeding structure. The feeding mechanism includes a feeding plate, feeding holes, a feeding motor, a feeding shaft, and a feeding movable plate. The feeding plate is fixedly installed on the inner wall of the first inspection port, and four feeding holes are opened on the feeding plate. The feeding motor is fixedly installed on the bottom side of the feeding plate, and the feeding shaft passes through the feeding plate. One end of the feeding shaft is connected to the output end of the feeding motor, and the feeding movable plate is fixedly installed on the other end of the feeding shaft. The feeding movable plate is adapted to the feeding holes.

[0010] Furthermore, the hinge includes a fixed block and a flip-connecting frame. The fixed block is fixedly installed on the inner wall of the mesh cover box, and the flip-connecting frame is rotatably installed on the fixed block. An open partition is embedded inside the flip-connecting frame, and the two are matched in size.

[0011] Furthermore, a dual-head motor is fixedly installed inside the fixing block, and both output ends of the dual-head motor are fixedly installed on the flip-connecting frame. A dual-head electronic valve is fixedly installed on the flip-connecting frame, and two slots are opened on the perforated partition plate, with the two output ends of the dual-head electronic valve respectively inserted into the slots.

[0012] Furthermore, the propulsion device includes a mounting frame, a protective cover, and a propulsion propeller. The mounting frame is fixedly mounted on the mesh cover housing, the protective cover is fixedly mounted on the mounting frame, and the propulsion propeller is fixedly mounted inside the protective cover. The propulsion propeller generates a thrust that causes the entire device to move horizontally on the surface of the polluted water, and the device travels at a speed of less than 0.1 m / s.

[0013] Furthermore, the steering mechanism includes a steering plate mounting bracket, a steering motor, and a steering plate. The steering plate mounting bracket is fixedly mounted on the mesh cover housing, the steering motor is fixedly mounted on the steering plate mounting bracket, and the steering plate is fixedly mounted on the output end of the steering plate mounting bracket. An obstacle detector and a water quality detector are fixedly mounted on the steering plate. When the obstacle detector detects an obstacle or embankment in front of the device, it transmits a signal to the central processing unit. The central processing unit then controls the steering motor to rotate the steering plate at an appropriate angle, thereby preventing the entire device from colliding with the obstacle or embankment. The water quality detector is used to detect the concentrations of ammonia nitrogen, nitrite nitrogen, and total nitrogen in the water in real time and transmits the detection results to the central processing unit in real time. Once the concentrations of ammonia nitrogen and nitrite nitrogen differ by more than 20%, the central processing unit will adjust the position of the perforated partition.

[0014] Furthermore, when the water quality detector on the steering plate detects that the ammonia nitrogen concentration in the water is more than 20% higher than the nitrite nitrogen concentration, the central processing unit will control one side of the perforated partition to engage with the hinge at the bottom of the mesh cover box, while the other side separates from the top of the mesh cover box and rotates downwards, thereby dividing the mesh cover box into two parts with an upper volume larger than the lower volume. At this time, the short-range nitrification immobilized biogel particles in the first storage tank will be replenished into the upper part of the cover through the first inspection port, while the excess anaerobic ammonia oxidation immobilized biogel particles in the lower part of the mesh cover box will be transported to the second storage tank through the second inspection port, thereby enhancing the short-range nitrification effect and more efficiently converting the excessive ammonia nitrogen in the water into nitrite nitrogen.

[0015] Furthermore, when the water quality detector on the steering plate detects that the ammonia nitrogen concentration in the water is more than 20% lower than the nitrite nitrogen concentration, the central processing unit will control one side of the perforated partition to engage with the hinge at the top of the mesh cover box, while the other side separates from the hinge at the bottom of the mesh cover box and rotates upward, thereby dividing the mesh cover box into two parts with an upper volume smaller than the lower volume. At this time, the excess short-range nitrification immobilized biogel particles in the upper part of the mesh cover box will be transported to the first storage tank through the first inspection port; the anaerobic ammonia oxidation immobilized biogel particles in the second storage tank will be replenished to the lower part of the mesh cover box through the second inspection port, thereby enhancing the anaerobic ammonia oxidation effect and thus more efficiently converting the excessive nitrite nitrogen in the water into nitrogen gas.

[0016] Furthermore, the solar power generation component includes a base, a rotating seat, a support rod, a circular joint, and a solar photovoltaic panel. The base is fixedly installed on the top side of the float, the rotating seat is rotatably installed on the top side of the base, the support rod is fixedly installed on the top of the rotating seat, the circular joint is movably installed on the round top of the rotating seat, the solar photovoltaic panel is fixedly installed on the circular joint, and two adjustable support rods are rotatably installed on the bottom side of the solar photovoltaic panel. Each of the two adjustable support rods has a movable block rotatably installed at its bottom end, and the two movable blocks are slidably installed on both sides of the rotating seat.

[0017] Furthermore, both ends of the adjusting support rod are provided with rotating holes, and rotating shafts are rotatably installed in both rotating holes. The two rotating shafts are respectively fixedly installed on the solar photovoltaic panel and the movable block.

[0018] Furthermore, a limiting groove is provided on the side of the rotating seat, and a limiting slider is slidably installed in the limiting groove. The limiting slider is fixedly installed on the movable block. A drive screw is rotatably installed on the inner wall of the limiting groove. The drive screw thread passes through the limiting slider. A drive motor is fixedly installed on the rotating seat, and the output end of the drive motor is connected to the drive screw.

[0019] Furthermore, a rotating motor is fixedly installed on the rotating base, the output end of the rotating motor is fixedly installed on the top side of the rotating base, the top side of the rotating base has an annular groove and a limiting ring groove, a limiting ring is rotatably installed in the limiting ring groove, the limiting ring is fixedly installed on the bottom side of the rotating base, and a storage battery is fixedly installed in the base.

[0020] The present invention has the following beneficial effects:

[0021] The integration of the floating body, mesh enclosure, and storage tank in this invention results in a more compact and efficient treatment system. This design not only saves space but also enhances the overall stability and reliability of the system, adapting to wastewater treatment scenarios of varying scales and process requirements. In particular, the perforated baffle design allows for adjustment based on the ratio of ammonia nitrogen to nitrite nitrogen in the wastewater. By adjusting the design and arrangement of the baffles, the ratio of short-cut nitrification to anaerobic ammonium oxidation can be flexibly controlled during the treatment process. This flexibility allows for optimization of treatment efficiency and quality based on different wastewater qualities and treatment needs.

[0022] The device combines short-cut nitrification and anaerobic ammonium oxidation (ANAO) technologies to achieve highly efficient nitrogen removal through a combination of physical and biological processes. It can effectively remove nitrogen compounds from wastewater in a relatively short time. Short-cut nitrification rapidly oxidizes nitrite nitrogen into nitrate nitrogen, while ANAO utilizes microorganisms under anaerobic conditions to oxidize ammonia nitrogen into nitrogen gas or nitrogen oxides, thereby effectively reducing the nitrogen concentration in wastewater. This two-stage coupled technology ensures effective nitrogen removal while adapting to different water quality conditions, making it particularly suitable for treating ammonia-polluted water bodies. Furthermore, this technology reduces reliance on and the amount of chemical reagents used. Nitrogen removal through biological processes not only reduces the cost of chemical reagents but also lowers energy consumption and waste treatment costs, thus reducing overall operating costs.

[0023] This invention utilizes solar power generation components, reducing reliance on traditional energy sources, improving energy efficiency, and contributing to environmental protection. Furthermore, the device design eliminates the need for external carbon sources and sludge discharge. External carbon sources are typically used in biological treatment processes to promote denitrification in wastewater, while sludge discharge is used to treat sludge byproducts in bioreactors. Eliminating these requirements not only simplifies the operation and maintenance of the device but also reduces additional energy consumption and treatment costs, further minimizing environmental impact.

[0024] The device's central processing unit can automatically adjust the treatment process based on water quality test results, improving operational convenience and automation. This intelligent management not only improves processing efficiency but also reduces the burden of manual operation.

[0025] Due to its strong adaptability, the device is suitable not only for various water environments such as eutrophic urban water bodies and polluted rivers, but also for water bodies with high concentrations of ammonia nitrogen. This characteristic gives the device a wider range of application prospects. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of a specific embodiment of the present invention;

[0027] Figure 2This is a top view of a specific embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of a planar structure according to a specific embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the first storage tank portion according to a specific embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the internal structure of a specific embodiment of the present invention;

[0031] Figure 6 This is a perspective structural diagram of a specific embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of a solar power generation component according to a specific embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of a solar power generation component according to a specific embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the hinge portion according to a specific embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the hinge portion according to a specific embodiment of the present invention;

[0036] Figure 11 This is a schematic diagram of the steering mechanism portion according to a specific embodiment of the present invention;

[0037] Figure 12 This is a schematic diagram of the material feeding plate portion according to a specific embodiment of the present invention.

[0038] Figure 13 This is a cross-sectional view of an application scenario of a specific embodiment of the present invention.

[0039] Figure 14 This is a top view of an application scenario of a specific embodiment of the present invention.

[0040] Numbers in the diagram:

[0041] 100. Floating body;

[0042] 200. Mesh cover box body;

[0043] 300. First storage tank; 301. Second storage tank; 302. First inspection port; 303. Second inspection port; 304. Discharge plate; 305. Discharge hole; 306. Discharge motor; 307. Discharge shaft; 308. Discharge movable plate;

[0044] 400. Hinge; 401. Perforated partition; 4011. Fixing block; 402. Short-range nitration immobilized biogel particles; 403. Anaerobic ammonia oxidation immobilized biogel particles; 404. Flip-over connecting frame; 405. Dual-head electronic valve; 406. Slot; 407. Dual-head motor;

[0045] 500. Thruster; 501. Mounting bracket; 502. Protective cover; 503. Propulsion propeller;

[0046] 600. Steering mechanism; 601. Steering plate mounting bracket; 602. Steering motor; 603. Steering plate; 604. Obstacle detector; 605. Water quality detector;

[0047] 700. Solar power generation module; 701. Base; 702. Rotating seat; 703. Support rod; 704. Joint; 705. Solar photovoltaic panel; 706. Adjustable support rod; 707. Movable block; 708. Rotating hole; 709. Rotating shaft; 710. Limiting groove; 711. Limiting slider; 712. Drive motor; 713. Drive screw; 714. Battery; 715. Limiting ring groove; 716. Limiting ring; 717. Rotating motor;

[0048] 800, Central Processing Unit;

[0049] 900. Polluted water body; 901. Water body slope; 902. Liquid surface. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0051] Reference Figure 1-4A two-stage autotrophic microbial denitrification device for treating ammonia nitrogen-polluted water includes a float 100. A mesh cover box 200 is fixedly installed on the bottom side of the float 100, and a first storage tank 300 and a second storage tank 301 are fixedly installed on the top side of the mesh cover box 200. The bottom of the first storage tank 300 and the second storage tank 301 are respectively provided with a first inspection port 302 and a second storage tank 303. The second storage tank 301 and the first storage tank 300 are respectively provided with a first inspection port 302 and a discharge plate 304. Two hinges 400 are fixedly installed on the inner wall of the mesh cover box 200, and a perforated partition 401 is movably installed between the two hinges 400. The two sides of the perforated partition 401 are filled with short-range nitrification immobilized biogel particles 402 and anaerobic ammonia oxidation immobilized biogel particles 403. A movable pipe is installed at the bottom of the second inspection port 303, and the other end of the movable pipe is connected to the anaerobic ammonia oxidation immobilized biogel particles 403. The 03-phase compatibility is achieved by fixing a propeller 500 and a steering mechanism 600 on both sides of the mesh cover box 200, and fixing a solar power generation component 700 and a central processing unit 800 on the top side of the float 100. By combining short-range nitrification and anaerobic ammonia oxidation, and utilizing the small unit structure of the capsule, short-range nitrification and anaerobic ammonia oxidation can be carried out directly in the polluted water body. This method has advantages such as no need for external carbon source, saving oxygen supply energy consumption, high denitrification efficiency, and no need for sludge discharge, resulting in significant economic and environmental benefits.

[0052] Please see Figure 12 In an optional embodiment: A feeding structure is installed in both the first inspection port 302 and the second inspection port 303. The feeding mechanism includes a feeding plate 304, feeding holes 305, a feeding motor 306, a feeding shaft 307, and a feeding movable plate 308. The feeding plate 304 is fixedly installed on the inner wall of the first inspection port 302. Four feeding holes 305 are formed on the feeding plate 304. The feeding motor 306 is fixedly installed on the bottom side of the feeding plate 304. The feeding shaft 307 passes through the feeding plate 304, and one end of the feeding shaft 307... The output end of the feeding motor 306 is connected, and the feeding movable plate 308 is fixedly installed at the other end of the feeding shaft 307. The feeding movable plate 308 is adapted to the feeding hole 305. The first inspection port and the second inspection port are used for filling and replacing the short-range nitration immobilized biogel particles and the anaerobic ammonia oxidation immobilized biogel particles, respectively. The feeding motor 306 drives the feeding shaft 307 to rotate, and the rotating feeding shaft 307 drives the feeding movable plate 308 to rotate on the feeding plate 304, thereby achieving the effect of opening and closing the feeding hole 305.

[0053] Please see Figure 9 and 10In an optional embodiment: the hinge 400 includes a fixing block 4011 and a flip connecting frame 404. The fixing block 4011 is fixedly installed on the inner wall of the mesh cover box 200, and the flip connecting frame 404 is rotatably installed on the fixing block 4011. The flip connecting frame 404 has an open partition 401 embedded inside, and the two are adapted to each other in size. A dual-head motor 407 is fixedly installed inside the fixing block 4011. Both output ends of the dual-head motor 407 are fixedly installed on the flip-connecting frame 404. A dual-head electronic valve 405 is fixedly installed on the flip-connecting frame 404. Two slots 406 are formed on the perforated partition 401, and the two output ends of the dual-head electronic valve 405 are respectively inserted into the slots 406. The perforated partition is rectangular; its opposite sides can engage with the first hinge and the second hinge, respectively, while the other two sides can slide inside the mesh cover, thereby dividing the interior of the mesh cover into an upper and lower half. When one side of the perforated partition engages with the first hinge, the opposite side can engage with the second hinge, thus dividing the interior volume of the mesh cover into two equal parts. When one side of the perforated partition engages with the first hinge, the opposite side can disengage from the second hinge, causing the perforated partition to rotate downwards around the first hinge, thereby making the upper half of the mesh cover larger than the lower half. Similarly, when one side of the perforated partition engages with the second hinge, the opposite side can separate from the first hinge, allowing the perforated partition to rotate upwards around the second hinge. This reduces the volume of the upper half of the mesh cover to be smaller than the lower half. The upper half of the mesh cover is filled with short-range nitrification immobilized biogel particles, while the lower half contains anaerobic ammonia oxidation immobilized biogel particles. The mesh openings of the mesh cover are smaller than the particle size of both the short-range nitrification immobilized biogel particles and the anaerobic ammonia oxidation immobilized biogel particles, thus preventing particles from flowing out of the mesh cover.

[0054] Please see Figure 6 In one optional embodiment: the propeller 500 includes a mounting frame 501, a protective cover 502, and a propeller 503. The mounting frame 501 is fixedly mounted on the mesh cover housing 200, the protective cover 502 is fixedly mounted on the mounting frame 501, and the propeller 503 is fixedly mounted inside the protective cover 502. The rotation of the propeller 503 on the mounting frame 501 generates thrust, and the protective cover 502 provides protection when the propeller 503 rotates. The thrust generated by the propeller 503 enables the entire device to move horizontally on the surface 902 of the polluted water body 900, and the device travels at a speed of 0.05 m / s.

[0055] Please see Figure 11In an optional embodiment: the steering mechanism 600 includes a steering plate mounting bracket 601, a steering motor 602, and a steering plate 603. The steering plate mounting bracket 601 is fixedly mounted on the mesh cover housing 200, the steering motor 602 is fixedly mounted on the steering plate mounting bracket 601, the steering plate 603 is fixedly mounted on the output end of the steering plate mounting bracket 601, and an obstacle detector 604 and a water quality detector 605 are fixedly mounted on the steering plate 603.

[0056] When the obstacle detector 604 detects an obstacle or embankment in front of the device, it transmits a signal to the central processing unit 800. The central processing unit 800 then controls the steering motor 602 to rotate the steering plate 603 at a suitable angle, thereby preventing the entire device from colliding with the obstacle or embankment. The water quality detector 605 is used to detect the concentrations of ammonia nitrogen, nitrite nitrogen, and total nitrogen in the water in real time, and transmits the detection results to the central processing unit 800 in real time. Once the concentrations of ammonia nitrogen and nitrite nitrogen differ by more than 20%, the central processing unit 800 will adjust the position of the perforated partition 401.

[0057] When the water quality detector 605 on the steering plate 603 detects that the ammonia nitrogen concentration in the water is more than 20% higher than the nitrite nitrogen concentration, the central processing unit 800 will control one side of the perforated partition 401 to engage with the hinge 400 at the bottom of the mesh cover box 200, while the other side separates from the hinge 400 at the top of the mesh cover box 200 and rotates downward, thereby dividing the mesh cover box 200 into two parts with an upper volume larger than the lower volume. At this time, the short-range nitrification immobilized biogel particles 402 in the first storage tank will be replenished into the upper part of the mesh cover box 200 through the first inspection port 302. At the same time, the excess anaerobic ammonia oxidation immobilized biogel particles 403 in the lower part of the mesh cover box 200 will be transported to the second storage tank 301 through the second inspection port 303, thereby enhancing the short-range nitrification effect and thus more efficiently converting the excessive ammonia nitrogen in the water into nitrite nitrogen.

[0058] When the water quality detector 605 on the steering plate 603 detects that the ammonia nitrogen concentration in the water is more than 20% lower than the nitrite nitrogen concentration, the central processing unit 800 will control one side of the perforated partition 401 to engage with the hinge at the top of the mesh cover box 200, while the other side separates from the hinge at the bottom of the mesh cover box 200 and rotates upward, thereby dividing the mesh cover box 200 into two parts with an upper volume smaller than the lower volume. At this time, the excess short-range nitrification immobilized biogel particles 402 in the upper part of the mesh cover box 200 will be transported to the first storage tank 300 through the first inspection port 302; the anaerobic ammonia oxidation immobilized biogel particles 403 in the second storage tank 301 will be replenished into the lower part of the mesh cover box 200 through the second inspection port 303, thereby enhancing the anaerobic ammonia oxidation effect and thus more efficiently converting the excessive nitrite nitrogen in the water into nitrogen gas.

[0059] Please see Figure 7 and 8 In one optional embodiment: the solar power generation module 700 includes a base 701, a rotating seat 702, a support rod 703, a circular joint 704, and a solar photovoltaic panel 705. The base 701 is fixedly installed on the top side of the float 100, the rotating seat 702 is rotatably installed on the top side of the base 701, the support rod 703 is fixedly installed on the top of the rotating seat 702, the circular joint 704 is movably installed on the circular top of the rotating seat 702, the solar photovoltaic panel 705 is fixedly installed on the circular joint 704, and two adjusting support rods 706 are rotatably installed on the bottom side of the solar photovoltaic panel 705. Movable blocks 707 are rotatably installed at the bottom ends of both adjusting support rods 706. The two movable blocks 707 are slidably installed on both sides of the rotating seat 702. Rotating holes 708 are opened at both ends of the adjusting support rods 706, and rotating shafts 709 are rotatably installed in both rotating holes 708. The two rotating shafts 709 are... The rotating seat 702 is fixedly installed on the solar photovoltaic panel 705 and the movable block 707. A limit groove 710 is opened on the side of the rotating seat 702. A limit slider 711 is slidably installed in the limit groove 710. The limit slider 711 is fixedly installed on the movable block 707. A drive screw 713 is rotatably installed on the inner wall of the limit groove 710. The drive screw 713 is threaded through the limit slider 711. A drive motor 712 is fixedly installed on the rotating seat 702. The output end of the drive motor 712 is connected to the drive screw 713. A rotary motor 717 is fixedly installed on the rotating seat 702. The output end of the rotary motor 717 is fixedly installed on the top side of the rotating seat 702. The top side of the rotating seat 702 has an annular groove and a limit ring groove 715. A limit ring 716 is rotatably installed in the limit ring groove 715. The limit ring 716 is fixedly installed on the bottom side of the rotating seat 702. A storage battery 714 is fixedly installed in the base 701.

[0060] It should be noted that the solar photovoltaic panel 705 can provide power to the device. To ensure the maximum power generation effect, the movement of the movable block 707 and the adjusting support rod 706 is controlled by the rotating seat 702 driving the drive screw 713 to rotate, thereby achieving the effect of adjusting the orientation of the solar photovoltaic panel 705. At the same time, the rotating motor 717 on the bottom side of the rotating seat 702 can drive itself to rotate on the base 701, thereby further enhancing the orientation adjustment function of the solar photovoltaic panel 705. In addition, the excess power generated can be stored through the battery 714.

[0061] Working principle of this invention:

[0062] like Figure 13 and 14As shown, the device can be installed on the surface of polluted water body 900 (or in urban slow-flowing, heavily eutrophic lakes and black and odorous rivers, etc., polluted with ammonia nitrogen), and mainly includes: a perforated baffle 401, a first hinge 400, a second hinge 400, a mesh enclosure 200, short-range nitrification immobilized biogel particles 402, anaerobic ammonia oxidation immobilized biogel particles 403, a steering plate 603, a propeller 500, a float 100, a solar photovoltaic panel 705, a first inspection port 302, a second inspection port 303, and a first storage tank 300. The system comprises a second storage tank 301, a central processing unit 800, and a rectangular perforated partition 401. Two opposite sides of the partition 401 can engage with a first hinge 400 and a second hinge 400, respectively, while the other two sides can slide inside the mesh cover housing 200, thus dividing the interior of the mesh cover housing 200 into an upper and lower half. When one side of the perforated partition 401 engages with the first hinge 400, the opposite side can engage with the second hinge 400, thereby dividing the interior volume of the mesh cover housing 200 into two equal parts. When one side of the perforated partition 401 engages with the first hinge 400, the opposite side can disengage from the second hinge 400, allowing the perforated partition 401 to rotate downwards around the first hinge 400, thus making the upper half of the mesh cover housing 200 larger than the lower half. Similarly, when one side of the perforated partition 401 engages with the second hinge 400, the opposite side can separate from the first hinge 400, causing the perforated partition 401 to rotate upward around the second hinge 400, thereby making the upper half of the mesh cover box 200 smaller than the lower half. The upper half of the mesh cover box 200 is filled with short-range nitrification immobilized biogel particles 402, and the lower half is filled with anaerobic ammonia oxidation immobilized biogel particles 403. The mesh size of the mesh cover 200 is smaller than that of the short-range nitrification immobilized biogel particles 402 and the anaerobic ammonia oxidation immobilized biogel particles 403, thereby preventing particles from flowing out of the mesh cover 200. The steering plate 603 is provided at the center of the side of the mesh cover 200 near the first hinge 400, which can adjust the forward direction of the entire system in the water. The steering plate 603 is equipped with an obstacle detector and a water quality detector. The propeller 500 is provided at the center of the side of the mesh cover 200 near the second hinge 400, which can propel the entire system horizontally in the water and adjust the forward speed.The recommended travel speed for the device is less than 0.1 m / s (too fast may result in incomplete short-range nitrification). The device can cruise along its path and cover all areas of the surface layer of the polluted water body. For key areas with poor water quality, the device can be driven multiple times to achieve targeted purification. When the propeller 500 propels the entire system horizontally in the water, the water will flow in the opposite direction under inertia into the net box 200 and the short-range nitrification immobilized biogel particles 402 and anaerobic ammonia oxidation immobilized biogel particles 403 filled therein. This allows the water to react with the short-range nitrification immobilized biogel particles 402 and anaerobic ammonia oxidation immobilized biogel particles 403, thereby achieving denitrification and purification. The upper surface of the net box 200 is equipped with a float 100. The float 100 is opaque and can float the entire system on the water surface. The center of the upper surface of the float 100 is located at... A solar photovoltaic panel 705 is installed to power the system. The upper surface of the float 100 has a first inspection port 302 and a second inspection port 303 at both ends, penetrating the upper surfaces of the float 100 and the net box 200, respectively. These are used to fill and replace the short-range nitrification immobilized biogel particles 402 and anaerobic ammonia oxidation immobilized biogel particles 403. Above the first inspection port 302 and the second inspection port 303 are a first storage tank 300 and a second storage tank 301, respectively, used to store excess short-range nitrification immobilized biogel particles 402 and anaerobic ammonia oxidation immobilized biogel particles 403. When the obstacle detector on the steering plate 603 detects an obstacle near the front of the system, it transmits a signal to the central processing unit 800 (not shown in the figure), which then controls the rotation direction of the steering plate 603 to prevent the system from colliding with the obstacle.

[0063] When the water quality detector on the steering plate 603 detects that the difference between the ammonia nitrogen concentration and the nitrite nitrogen concentration in the water does not exceed 20%, the central processing unit 800 controls one side of the perforated partition 401 to engage with the first hinge 400 and the other side to engage with the second hinge 400, thereby dividing the cover into an upper and lower half of equal volume. When the water quality detector on the steering plate 603 detects that the ammonia nitrogen concentration in the water is more than 20% higher than the nitrite nitrogen concentration, the central processing unit 800 controls the perforated partition 401 to engage with the first hinge 400 and the second hinge 400, thereby dividing the cover into an upper half and a lower half of equal volume. One side engages with the first hinge 400, while the other side separates from the second hinge 400 and rotates downward, thereby dividing the cover into an upper half with a larger volume than the lower half. At this time, the short-range nitrification immobilized biogel particles 402 in the first storage tank 300 will be replenished into the upper half of the cover through the first inspection port 302, while the excess anaerobic ammonia oxidation immobilized biogel particles 403 in the lower half of the cover will be transported to the second storage tank 301 through the second inspection port 303. This enhances short-range nitrification, thereby more efficiently converting excessive ammonia nitrogen in the water into nitrite nitrogen. When the water quality detector on the steering plate 603 detects that the ammonia nitrogen concentration in the water is more than 20% lower than the nitrite nitrogen concentration, the central processing unit 800 controls one side of the perforated partition 401 to engage with the second hinge 400, while the other side separates from the first hinge 400 and rotates upwards. This divides the enclosure into an upper half with a smaller volume than the lower half. At this time, the excess short-range nitrification immobilized biogel particles 402 in the upper half of the enclosure are transported to the first storage tank 300 through the first inspection port 302; the anaerobic ammonia oxidation immobilized biogel particles 403 in the second storage tank 301 are replenished into the lower half of the enclosure through the second inspection port 303. This enhances anaerobic ammonia oxidation, thereby more efficiently converting excessive nitrite nitrogen in the water into nitrogen gas.

[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A two-stage full autotrophic microbial de-nitrification device for treating contaminated water bodies, characterized in that, The system includes a float (100), characterized in that: a mesh cover box (200) is fixedly installed on the bottom side of the float (100), and a first storage tank (300) and a second storage tank (301) are fixedly installed on the top side of the mesh cover box (200). The bottom of the first storage tank (300) and the second storage tank (301) are respectively provided with a first inspection port (302) and a second inspection port (303); two hinges (400) are fixedly installed on the inner wall of the mesh cover box (200), and a perforated partition plate (401) is movably installed between the two hinges (400). The two sides of the partition (401) are filled with short-range nitrification immobilized biogel particles (402) and anaerobic ammonia oxidation immobilized biogel particles (403); the bottom of the second inspection port (303) is equipped with a movable pipe, the other end of which is adapted to the anaerobic ammonia oxidation immobilized biogel particles (403); the two sides of the mesh cover box (200) are respectively fixedly installed with a propeller (500) and a steering mechanism (600); the top side of the float (100) is fixedly installed with a solar power generation module (700) and a central processing unit (800). The hinge (400) includes a fixed block (4011) and a flip-connecting frame (404). The fixed block (4011) is fixedly installed on the inner wall of the mesh cover box (200), and the flip-connecting frame (404) is rotatably installed on the fixed block (4011). The flip-connecting frame (404) has an embedded perforated partition (401) inside, and the two are matched in size. A dual-head motor (407) is fixedly installed inside the fixed block (4011). Both output ends of the dual-head motor (407) are fixedly installed on the flip-connecting frame (404). A dual-head electronic valve (405) is fixedly installed on the flip-connecting frame (404). Two slots (406) are opened on the perforated partition plate (401). The two output ends of the dual-head electronic valve (405) are respectively inserted into the slots (406).

2. The two-stage autotrophic microbial denitrification device for treating polluted water as described in claim 1, characterized in that, Both the first inspection port (302) and the second inspection port (303) are equipped with a feeding mechanism. The feeding mechanism includes a feeding plate (304), feeding holes (305), a feeding motor (306), a feeding shaft (307), and a feeding movable plate (308). The feeding plate (304) is fixedly installed on the inner wall of the first inspection port (302). Four feeding holes (305) are opened on the feeding plate (304). The feeding motor (306) is fixedly installed on the bottom side of the feeding plate (304). The feeding shaft (307) passes through the feeding plate (304). One end of the feeding shaft (307) is connected to the output end of the feeding motor (306). The feeding movable plate (308) is fixedly installed on the other end of the feeding shaft (307). The feeding movable plate (308) is adapted to the feeding holes (305).

3. The two-stage autotrophic microbial denitrification device for treating contaminated water bodies according to claim 1, characterized in that, The propulsion device (500) includes a mounting frame (501), a protective cover (502), and a propulsion propeller (503). The mounting frame (501) is fixedly mounted on the mesh cover box (200), the protective cover (502) is fixedly mounted on the mounting frame (501), and the propulsion propeller (503) is fixedly mounted inside the protective cover (502). The propulsion force generated by the propulsion propeller (503) enables the entire device to move horizontally on the surface (902) of the polluted water body (900), and the device travels at a speed of less than 0.1 m / s.

4. The two-stage autotrophic microbial denitrification device for treating contaminated water bodies according to claim 1, characterized in that, The steering mechanism (600) includes a steering plate mounting bracket (601), a steering motor (602), and a steering plate (603). The steering plate mounting bracket (601) is fixedly mounted on the mesh cover housing (200), the steering motor (602) is fixedly mounted on the steering plate mounting bracket (601), and the steering plate (603) is fixedly mounted on the output end of the steering plate mounting bracket (601). An obstacle detector (604) and a water quality detector (605) are fixedly mounted on the steering plate (603). When the obstacle detector (604) detects an obstacle or embankment in front of the device... When the signal is transmitted to the central processing unit (800), the central processing unit (800) controls the steering motor (602) to rotate the steering plate (603) at a suitable angle, thereby avoiding the entire device from colliding with obstacles or embankments; the water quality detector (605) is used to detect the concentration of ammonia nitrogen, nitrite nitrogen and total nitrogen in the water in real time, and transmits the detection results to the central processing unit (800) in real time. Once the concentrations of ammonia nitrogen and nitrite nitrogen differ by more than 20%, the central processing unit (800) will adjust the position of the perforated partition (401); When the water quality detector (605) on the steering plate (603) detects that the ammonia nitrogen concentration in the water is more than 20% higher than the nitrite nitrogen concentration, the central processing unit (800) will control one side of the perforated partition (401) to engage with the hinge (400) at the bottom of the mesh cover box (200), while the other side separates from the hinge (400) at the top of the mesh cover box (200) and rotates downward, thereby dividing the mesh cover box (200) into two parts with an upper volume larger than the lower volume. At this time, the short-range nitrification immobilized biogel particles (402) in the first storage tank will be replenished into the upper part of the mesh box (200) through the first inspection port (302), while the excess anaerobic ammonia oxidation immobilized biogel particles (403) in the lower part of the mesh box (200) will be transported to the second storage tank (301) through the second inspection port (303), thereby enhancing the short-range nitrification and converting the excessive ammonia nitrogen in the water into nitrite nitrogen more efficiently; When the water quality detector (605) on the steering plate (603) detects that the ammonia nitrogen concentration in the water is more than 20% lower than the nitrite nitrogen concentration, the central processing unit (800) will control one side of the perforated partition (401) to engage with the hinge (400) at the top of the mesh cover box (200), while the other side separates from the hinge (400) at the bottom of the mesh cover box (200) and rotates upward, thereby dividing the mesh cover box (200) into two parts with an upper volume smaller than the lower volume. At this time, the excess short-range nitrification immobilized biogel particles (402) in the upper part of the mesh cover box (200) will be transported to the first storage tank (300) through the first inspection port (302); the anaerobic ammonia oxidation immobilized biogel particles (403) in the second storage tank (301) will be replenished to the lower part of the mesh cover box (200) through the second inspection port (303) to enhance the anaerobic ammonia oxidation effect, thereby more efficiently converting the excessive nitrite nitrogen in the water into nitrogen gas.

5. The two-stage autotrophic microbial denitrification device for treating contaminated water bodies according to claim 1, characterized in that: The solar power generation module (700) includes a base (701), a rotating seat (702), a support rod (703), a circular joint (704), and a solar photovoltaic panel (705). The base (701) is fixedly installed on the top side of the float (100), the rotating seat (702) is rotatably installed on the top side of the base (701), the support rod (703) is fixedly installed on the top of the rotating seat (702), the circular joint (704) is movably installed on the circular top of the rotating seat (702), and the solar photovoltaic panel (705) is fixedly installed on the circular joint (704). On the bottom side of the solar photovoltaic panel (705), two adjustable support rods (706) are rotatably installed. Movable blocks (707) are rotatably installed at the bottom ends of the two adjustable support rods (706). The two movable blocks (707) are slidably installed on both sides of the rotating seat (702). Rotating holes (708) are opened at both ends of the adjustable support rods (706). Rotating shafts (709) are rotatably installed in the two rotating holes (708). The two rotating shafts (709) are fixedly installed on the solar photovoltaic panel (705) and the movable blocks (707) respectively.

6. The two-stage autotrophic microbial denitrification device for treating contaminated water bodies according to claim 5, characterized in that: The rotating seat (702) has a limiting groove (710) on its side. A limiting slider (711) is slidably installed in the limiting groove (710). The limiting slider (711) is fixedly installed on the movable block (707). A drive screw (713) is rotatably installed on the inner wall of the limiting groove (710). The drive screw (713) is threaded through the limiting slider (711). A drive motor (712) is fixedly installed on the rotating seat (702). The output end of the drive motor (712) It is connected to the drive screw (713); a rotary motor (717) is fixedly installed on the rotary seat (702), the output end of the rotary motor (717) is fixedly installed on the top side of the base (701), a limit ring groove (715) is opened on the top side of the base (701), a limit ring (716) is rotatably installed in the limit ring groove (715), the limit ring (716) is fixedly installed on the bottom side of the rotary seat (702), and a storage battery (714) is fixedly installed in the base (701).

Images