Floating short-range nitrification-anaerobic ammonia oxidation coupling denitrification device

Abstract

The application discloses a floating flow type short-range nitrification-anaerobic ammonia oxidation coupling denitrification device, which comprises a device body, the device body comprises a flexible cover body with an elongated shell, the two ends of the elongated shell along the length direction are respectively provided with front and rear hollow chambers which are communicated with each other, the front hollow chamber is provided with short-range nitrification functional microbial suspension fillers, the rear hollow chamber is provided with anaerobic ammonia oxidation functional microbial suspension fillers, the area of the elongated shell between the front and rear hollow chambers is vertically flexible, and the elongated shell is provided with a water inlet and outlet, a power element, a buoyancy element and a propeller. The short-range nitrification functional microbial suspension fillers are used in the front end of the flexible cover body to realize short-range nitrification of sewage, and the rear end is coupled with the anaerobic ammonia oxidation functional microbial suspension fillers to realize anaerobic ammonia oxidation and denitrification of sewage, so that the short-range nitrification and the anaerobic ammonia oxidation coupling reaction can reach a suitable treatment effect, the device 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 and the like, and has remarkable economic and environmental benefits.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically relating to a floating, flushing-type short-cut nitrification-anaerobic ammonia oxidation coupled denitrification device. Background Technology

[0002] Compared to wastewater treatment technology, my country's sludge treatment and disposal technology developed relatively late. Early wastewater treatment plants generally prioritized water treatment over sludge disposal, focusing on wastewater treatment rates while neglecting the final treatment and disposal of sludge. Furthermore, most wastewater treatment plants lacked adequate supporting sludge treatment facilities. Statistics show that the common sludge disposal methods are drying and incineration (10%), landfill (6%), and composting (1%), with improperly disposed sludge accounting for as much as 83%. Experts predict that the amount of improperly disposed sludge exceeds 30 million tons annually. This improperly disposed sludge typically has a moisture content of over 80% and is haphazardly buried in landfills. After prolonged landfilling and anaerobic digestion, landfill pits generate large amounts of untreated leachate with high ammonia nitrogen concentrations, low biodegradable organic matter content, and foul odor, posing a serious threat to the safety of surrounding land and the health of residents. In recent years, with the increasing emphasis on sludge treatment in my country, improperly disposed sludge landfills are required to achieve sludge reduction and harmless treatment. During the sludge treatment process, a large amount of sludge leachate needs to be treated. However, there are currently no effective technologies, either domestically or internationally, for in-situ denitrification and purification of this sludge leachate.

[0003] 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 divided into an ammonia oxidation stage and a nitrite oxidation stage, which 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. The principle of short-cut nitrification is that since nitrification is a different reaction independently catalyzed 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 stage, preventing 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] Based on the principles and characteristics of short-cut nitrification and anaerobic ammonium oxidation, if these two technologies can be combined to develop a fully autotrophic nitrogen removal technology that couples short-cut nitrification and anaerobic ammonium oxidation, it is foreseeable that compared with traditional nitrification-denitrification nitrogen removal technology, it will have advantages such as no need for external carbon sources, saving oxygen supply energy consumption, high nitrogen removal efficiency, and no need for sludge discharge, resulting in significant economic and environmental benefits. Meanwhile, microbial biofilm technology immobilizes microorganisms on a packing carrier, allowing the microbial cells to contact the water and maintain good biological activity, thereby enhancing the function of the microorganisms and even the entire treatment process. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a floating, flushing, short-cut nitrification-anaerobic ammonia oxidation coupled denitrification device to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] A floating, flush-flow type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device is provided, comprising a device body, the device body including a flexible shroud with an elongated shell, the elongated shell having interconnected front and rear hollow chambers at its front and rear ends along its length, the front hollow chamber containing short-cut nitrification functional microbial suspended packing material, and the rear hollow chamber containing anaerobic ammonium oxidation functional microbial suspended packing material, the region of the elongated shell between the front and rear hollow chambers being vertically flexible, the front end of the elongated shell having an inlet and the rear end having an outlet, and the elongated shell having a power component, a buoyancy component, and a propeller, the power component providing power output to the buoyancy component and the propeller.

[0008] As described in the floating, jet-flow short-range nitrification-anaerobic ammonia oxidation coupled denitrification device, the buoyancy component includes a first airbag, a second airbag, an air pump, and an air supply pipe with an electronic valve. The first airbag is located at the bottom front end of the elongated shell, and the second airbag is located at the bottom rear end of the elongated shell. The air pump is connected to the first airbag and the second airbag respectively through the air supply pipe.

[0009] As described in the floating, jet-flow short-range nitrification-anaerobic ammonia oxidation coupled denitrification device, the bottom side of the elongated shell is equipped with an obstacle probe and a water quality probe.

[0010] As described in the floating, flushing, short-cut nitrification-anaerobic ammonia oxidation coupled denitrification device, the buoyancy component further includes a central controller, and the air pump's inflation volume to the first and second air bladders is freely adjusted by the central controller according to the water quality of the sludge leachate.

[0011] As described in the floating, flushing, short-cut nitrification-anaerobic ammonia oxidation coupled denitrification device, when the water quality probe detects that the difference between the ammonia nitrogen concentration and the nitrite nitrogen concentration in the water does not exceed 20%, the central controller adjusts the inflation volume of the first and second airbags to be the same, so that the top of the flexible hood just exposes the surface of the floating sludge leachate; when the water quality probe detects that the ammonia nitrogen concentration in the water is more than 20% higher than the nitrite nitrogen concentration, the central controller adjusts the inflation volume of the first airbag to be less than the inflation volume of the second airbag, so that the top of the front end of the flexible hood just exposes the surface of the floating sludge leachate, the flexible hood... The rear end of the flexible hood floats above the liquid surface to enhance short-range nitrification. The rear end of the flexible hood floats to a maximum extent that the top of the outlet is not exposed above the liquid surface. When the water quality probe detects that the ammonia nitrogen concentration in the water is more than 20% lower than the nitrite nitrogen concentration, the central controller adjusts the inflation volume of the first airbag to be greater than that of the second airbag, so that the top of the front end of the flexible hood floats above the liquid surface, and the rear end of the flexible hood just exposes the surface of the floating sludge leachate, thereby enhancing anaerobic ammonia oxidation. The front end of the flexible hood floats to a maximum extent that the bottom of the inlet is not exposed above the liquid surface.

[0012] As described in the floating jet-type short-cut nitrification-anaerobic ammonia oxidation coupled denitrification device, the front hollow chamber is further provided with an oxygenation component, which is connected to the gas delivery pipeline.

[0013] As described in the floating jet-type short-cut nitrification-anaerobic ammonia oxidation coupled denitrification device, the oxygenation component is a micron-sized aeration disc located at the bottom of the front hollow chamber, and the micron-sized aeration disc is equipped with multiple micron-sized aeration disc nozzles.

[0014] As described in the floating, jet-flow short-range nitrification-anaerobic ammonia oxidation coupled denitrification device, the propellers are a set arranged side-by-side at the bottom of the elongated shell near the second air bladder. Each propeller includes a propeller mounting frame, a propeller motor, a propeller fan, and a propeller protective cover. The propeller mounting frame is fixed to the bottom side of the elongated shell, the propeller motor is fixed inside the propeller mounting frame, the propeller fan is fixed to the output end of the propeller motor, and the propeller protective cover is fixed to the side of the propeller mounting frame. The propeller fan is located inside the propeller protective cover. The two propellers control the direction of the device body by the difference in their rotational speeds.

[0015] As described in the floating, jet-type short-range nitrification-anaerobic ammonia oxidation coupled denitrification device, the power component is a wind power generation assembly. The wind power generation assembly includes a generator housing fixed to the top side of the elongated shell. A rotating rod is rotatably mounted on the generator housing. Three connecting rods are equidistantly fixed to the top of the rotating rod. Wind turbine plates are fixed to the three connecting rods respectively. A generator and a battery are provided inside the generator housing. The input end of the generator is connected to the rotating rod, and the generator and the battery are electrically connected.

[0016] As described in the floating jet-type short-cut nitrification-anaerobic ammonia oxidation coupled denitrification device, the flexible cover includes a rubber shell and a first metal frame, a movable connecting rod, and a second metal frame connected in sequence. The rubber shell is fixedly sleeved on the first metal frame and the second metal frame, and the first metal frame and the second metal frame are movably connected through the movable connecting rod.

[0017] As described in the floating jet-type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device, a mesh plate is provided between the short-cut nitrification functional microbial suspended packing and the anaerobic ammonium oxidation functional microbial suspended packing, and the mesh plate is provided with water-permeable mesh holes.

[0018] As described in the floating jet-type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device, the arrangement of the short-cut nitrification functional microbial suspended packing and the anaerobic ammonium oxidation functional microbial suspended packing is uniformly arranged in a grid pattern.

[0019] The beneficial effects of the technical solution of this invention are:

[0020] 1. Technological innovation and environmental adaptability

[0021] This invention combines two biological nitrogen removal technologies, short-cut nitrification and anaerobic ammonium oxidation, and innovatively couples them inside a flexible cover. This design not only improves nitrogen removal efficiency but also reduces the need for external carbon sources. The flexible cover can adapt to different aquatic environments, improving the environmental adaptability and application range of the equipment.

[0022] 2. Ease of operation and economic benefits

[0023] By adjusting the height difference between the two parts of the airbag, this invention can adjust the treatment speed and effect according to the real-time water quality. This design reduces the complexity of operation and improves the flexibility and accuracy of treatment. In addition, due to the saving of additional carbon source supply and the reduction of oxygen supply demand, this invention has a significant advantage in operating costs and improves economic efficiency.

[0024] 3. Energy self-sufficiency and environmental benefits

[0025] By using wind power generation components to power the device, this invention achieves energy self-sufficiency, reduces dependence on external power sources, and reduces energy consumption. This self-sufficient energy solution not only reduces operating costs but also reduces environmental pollution, resulting in significant environmental benefits.

[0026] 4. High nitrogen removal efficiency and no need for sludge discharge

[0027] The present invention has high denitrification efficiency and can effectively convert ammonia nitrogen into nitrogen gas, reducing nitrogen emissions and helping to improve water quality and protect the ecological environment. At the same time, due to the coupling of short-cut nitrification and anaerobic ammonium oxidation processes, the amount of sludge produced is reduced, which reduces the burden of subsequent sludge treatment.

[0028] 5. Structural innovation and functional optimization

[0029] Innovations in equipment structure, such as flexible hoods, adjustable air bladders, and micron-sized aeration discs, not only improve processing efficiency but also enhance the practicality and stability of the equipment. These structural innovations enable the equipment to adapt more effectively to different processing needs in practical applications, thereby improving its functionality and practical value.

[0030] 6. Portability, flexibility, and security

[0031] The device of this invention is small in size, can be easily transported by vehicle, is plug-and-play, and has a wide range of applications; it can be remotely controlled digitally to keep operators away from landfills, avoiding poisoning and suffocation incidents caused by the odor emitted by sludge and leachate, and ensuring the safety of personnel during the treatment process.

[0032] In summary, this invention provides a new, efficient, economical, and environmentally friendly method for nitrogen removal in the wastewater treatment industry, which has significant practical value and broad application prospects. Attached Figure Description

[0033] To further illustrate the above-mentioned objectives, structural features, and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Figure 1 This is a three-dimensional structural schematic diagram of a preferred embodiment of the floating jet-type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention;

[0035] Figure 2 This is a top view schematic diagram of a preferred embodiment of the floating jet-type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention;

[0036] Figure 3 This is a side view of a preferred embodiment of the floating jet-type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention;

[0037] Figure 4This is a perspective view of the internal structure of a preferred embodiment of the floating-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention;

[0038] Figure 5 This is a left-side structural schematic diagram of a preferred embodiment of the floating jet-type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention;

[0039] Figure 6 This is a right-side structural schematic diagram of a preferred embodiment of the floating jet-type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention;

[0040] Figure 7 This is a cross-sectional schematic diagram of the flexible cover of the floating jet-type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device, a preferred embodiment of the present invention.

[0041] Figure 8 This is a schematic diagram of the structure of a wind power generation component of a floating, jet-flow type short-range nitrification-anaerobic ammonium oxidation coupled denitrification device, which is a preferred embodiment of the present invention.

[0042] Figure 9 This is a schematic diagram of the buoyancy and oxygenation components of a preferred embodiment of the floating, jet-flow type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention;

[0043] Figure 10 This is a schematic diagram of the propeller of a preferred embodiment of the floating jet-type short-range nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention;

[0044] Figure 11 This is a cross-sectional view of the overall application scenario of the preferred embodiment of the floating jet-type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention;

[0045] Figure 12 This is a top view of the overall application scenario of the preferred embodiment of the floating jet-type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention;

[0046] In the diagram: 100. Flexible cover; 101. Front hollow chamber; 102. Rear hollow chamber; 103. Short-range nitrification functional microbial suspended packing; 104. Anaerobic ammonia oxidation functional microbial suspended packing; 105. Inlet; 106. Outlet; 107. Rubber shell; 108. First metal frame; 109. Movable connecting rod; 110. Second metal frame; 111. Mesh plate; 112. First inspection hole; 113. Second inspection hole; 200. Power component; 201. Generator housing; 202. Rotating rod; 203. Connecting rod; 204. Wind turbine plate; 205. Generator. ; 206. Storage battery; 300. Buoyancy component; 301. First airbag; 302. Second airbag; 303. Air pump; 304. Electronic valve; 305. Gas pipeline; 400. Thruster; 401. Thruster mounting bracket; 402. Thruster motor; 403. Thruster fan; 404. Thruster protective cover; 500. Probe bracket; 501. Obstacle probe; 502. Water quality probe; 600. Micron aeration disc; 601. Micron aeration disc nozzle; 700. Landfill; 701. Floating sludge leachate surface; 702. Slope; 703. Unloading platform; 704. Dam. Detailed Implementation

[0047] The terms “invention” and “the present invention” used in this specification are intended to broadly refer to all subject matter of this specification and any of the following patent claims. Statements containing these terms should not be construed as limiting the subject matter described herein or limiting the meaning or scope of any of the following patent claims. Furthermore, this specification does not attempt to describe or limit the subject matter covered by any claim of any particular component, paragraph, statement, or drawing of this application. The subject matter should be understood with reference to the entire specification, all drawings, and any of the following claims. The invention may have other embodiments and be practiced or implemented in other ways. Moreover, it should be understood that the wording and terminology used herein are for illustrative purposes and should not be considered limiting.

[0048] The details of the invention will now be discussed with reference to the accompanying drawings, which are illustrated by way of example only. In the drawings, similar features or components may be labeled using the same reference numerals.

[0049] The use of the terms "comprising," "having," and "including," and variations thereof, herein means to include the items listed herein and their equivalents and additional items. While reference may be made in the description of the drawings to directions such as above, below, upward, downward, backward, bottom, top, front, rear, etc., for convenience, reference is made relative to the drawings. These directions are not intended to literally accept or limit the invention in any form. Furthermore, terms such as "first," "second," "third," etc., are used herein for illustrative purposes and are not intended to indicate or imply importance or significance.

[0050] See Figures 1 to 6 As shown, the floating, jet-flow type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device of the present invention includes a device body, which includes a flexible shell 100 with an elongated shell. The elongated shell has a front hollow chamber 101 and a rear hollow chamber 102 connected to each other at its front and rear ends along its length. The front hollow chamber 101 contains short-cut nitrification functional microbial suspension packing 103, and the rear hollow chamber 102 contains anaerobic ammonium oxidation functional microbial suspension packing 104. The region of the elongated shell between the front hollow chamber 101 and the rear hollow chamber 102 is vertically flexible, so that its front end (front half) and rear end (rear half) are not on the same plane. The front end face of the elongated shell has an inlet 105, and the rear end face has an outlet 106. The elongated shell is equipped with a power component 200, a buoyancy component 300, and a propeller 400, with the power component providing power output to the buoyancy component and the propeller.

[0051] In a preferred embodiment, both the inlet 105 and the outlet 106 are rectangular. The height of the inlet 105 is more than 1 / 2 of the front end face of the flexible cover 100 to ensure that the water in the upper half of the front end face of the cover can smoothly enter the interior of the shell. The outlet 106 is located in the lower half of the rear end face of the flexible cover 100, and the height of the outlet is less than 1 / 2 of the rear end face of the flexible cover 100 to ensure that the outlet 106 is completely located in the lower half of the rear end face of the cover.

[0052] See Figure 7 As shown, the elongated shell of the flexible cover 100 is a flexible rectangular shell. The flexible cover 100 is waterproof and lightproof, and specifically includes a rubber shell 107 and a first metal frame 108, a movable connecting rod 109, and a second metal frame 110 connected in sequence. The rubber shell 107 is fixedly sleeved on the first metal frame 108 and the second metal frame 110. The first metal frame 108 and the second metal frame 110 are movably connected by the movable connecting rod 109. Specifically, both ends of the movable connecting rod 109 have movable holes, and movable shafts are rotatably installed in both movable holes. The first metal frame 108 and the second metal frame 110 achieve height changes relative to each other through the movable connecting rod 109.

[0053] A mesh plate 111 is provided between the short-cut nitrification functional microbial suspended packing material 103 and the anaerobic ammonia oxidation functional microbial suspended packing material 104. The mesh plate 111 has water-permeable mesh holes. The short-cut nitrification functional microbial suspended packing material 103 and the anaerobic ammonia oxidation functional microbial suspended packing material 104 are both arranged in a uniform grid pattern.

[0054] In a preferred embodiment, see Figure 8As shown, the power component 200 is a wind power generation assembly. The wind power generation assembly includes a generator housing 201 fixed to the top side of an elongated shell. A rotating rod 202 is rotatably mounted on the generator housing 201. Three connecting rods 203 are equidistantly fixed to the top of the rotating rod 202, and wind turbine plates 204 are respectively fixed to the three connecting rods 203. A generator 205 and a battery 206 are housed inside the generator housing 201. The input end of the generator 205 is connected to the rotating rod 202, and the generator 205 and the battery 206 are electrically connected. The wind power generation assembly utilizes wind energy or natural wind energy generated by the movement of the device body to generate and store electricity, thereby supplying power to all electrical components on the shell.

[0055] See Figure 9 As shown, the buoyancy component 300 includes a first airbag 301, a second airbag 302, an air pump 303, and an air supply pipe 305 with an electronic valve 304. The first airbag 301 is located at the bottom front end of the elongated shell, and the second airbag 302 is located at the bottom rear end of the elongated shell. The air pump 303 is connected to the first airbag 301 and the second airbag 302 respectively through the air supply pipe 305. It can be understood that the air supply pipe 305 may include a main pipe and branch pipes. The electronic valve 304, which has a switching function, is located at the connection between each branch pipe and each air-consuming component. The air pump 303 is located at the top of the elongated shell.

[0056] Continue reading Figure 1 and Figure 5 As shown, an obstacle probe 501 and a water quality probe 502 are provided on the bottom side of the elongated housing, used to detect obstacles in front of the device and to detect the water pollution status of the sludge leachate. Preferably, both the obstacle probe 501 and the water quality probe 502 are mounted on the elongated housing via probe brackets 503.

[0057] Furthermore, the buoyancy component 300 also includes a central controller 306. The air pump 303 adjusts the inflation volume of the first airbag 301 and the second airbag 302 according to the water quality of the sludge leachate via the central controller 306. In a preferred embodiment, when the water quality probe 502 detects that the difference between the ammonia nitrogen concentration and the nitrite nitrogen concentration in the water does not exceed 20%, the central controller 306 adjusts the inflation volume of the first airbag 301 and the second airbag 302 to be the same, so that the top of the flexible cover 100 just protrudes above the surface of the floating sludge leachate; when the water quality probe 502 detects that the ammonia nitrogen concentration in the water is more than 20% higher than the nitrite nitrogen concentration, the central controller 306 adjusts the inflation volume of the first airbag 301 to be less than the inflation volume of the second airbag 302, so that the top of the front end of the flexible cover 100 just protrudes above the surface of the floating sludge leachate, while the rear end of the flexible cover 100 floats to the surface. In this way, short-range nitrification is enhanced, and the rear end of the flexible hood 100 floats upward to the point that the top of the outlet 106 is exposed above the liquid surface. When the water quality probe 502 detects that the ammonia nitrogen concentration in the water is more than 20% lower than the nitrite nitrogen concentration, the central controller 306 adjusts the inflation volume of the first airbag 301 to be greater than that of the second airbag 302, so that the front top of the flexible hood 100 floats above the liquid surface, and the rear end of the flexible hood 100 just exposes the surface of the floating sludge leachate, thereby enhancing anaerobic ammonia oxidation. The front end of the flexible hood 100 floats upward to the point that the bottom of the inlet 105 is exposed above the liquid surface.

[0058] See Figure 9 As shown, an oxygenation component is also provided in the front hollow chamber 101, which is connected to the air supply pipe 305. Further, the oxygenation component is a micron-sized aeration disc 600 located at the bottom of the front hollow chamber 101. The micron-sized aeration disc 600 is equipped with multiple micron-sized aeration nozzles 601. After being supplied with air by the air pump 303, the micron-sized aeration disc 600 can generate micron-sized bubbles in the water, which can oxygenate the short-range nitrification functional microbial suspended packing material 103.

[0059] The top of the front end of the elongated shell is provided with a first inspection hole 112 for inspecting the short-range nitrification functional microbial suspension packing 103 and the micron aeration disc 600 in the hollow chamber 101 before maintenance. The top of the rear end of the elongated shell is provided with a second inspection hole 113 for inspecting the anaerobic ammonia oxidation functional microbial suspension packing 104 in the hollow chamber 102 after maintenance.

[0060] See Figure 10 , Figure 11 and Figure 12As shown, the thrusters 400 are arranged in a group, side by side, at the bottom of the elongated housing near the second airbag 302. Each thruster 400 includes a thruster mounting bracket 401, a thruster motor 402, a thruster fan 403, and a thruster protective cover 404. The thruster mounting bracket 401 is fixed to the bottom side of the elongated housing, the thruster motor 402 is fixed inside the thruster mounting bracket 401, the thruster fan 403 is fixed to the output end of the thruster motor 402, and the thruster protective cover 404 is fixed to the side of the thruster mounting bracket 401, with the thruster fan 403 located inside the thruster protective cover 404. The two thrusters 400 control the direction of the device body through the difference in their rotational speeds, and the combined force they generate propels the device body horizontally across the surface 701 of the floating sludge leachate in the landfill 700. The travel speed of the device body is less than 0.5 m / s, and more preferably, less than 0.1 m / s. It should be noted that the landfill 700 has slopes 702 on both sides, and the top of the slopes 702 is the unloading platform 703. The point marked in the figure is the dam 704.

[0061] When the device body is pushed forward, the floating sludge leachate will enter the inlet 105 in reverse due to inertia, and then flow into the flexible cover 100. It first flows through the short-cut nitrification functional microbial suspension packing 103 at the front end (front half), and through the mesh of the screen 111, and then through the anaerobic ammonia oxidation functional microbial suspension packing 104 at the rear end (rear half), and finally flows out from the outlet 106. The device travels at a speed of 0.05 m / s. The travel speed should not be too fast, otherwise the short-cut nitrification reaction will be incomplete. The device can cruise along its travel path and cover all areas of the landfill surface. For key areas with poor water quality, it can travel repeatedly to achieve the effect of targeted purification.

[0062] This invention provides a new, efficient, economical, and environmentally friendly method for nitrogen removal in the wastewater treatment industry, which has significant practical value and broad application prospects.

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A floating, jet-flow type short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device, characterized in that, The device includes a main body comprising a flexible cover with an elongated shell. The elongated shell has a front hollow chamber and a rear hollow chamber that are interconnected at its front and rear ends along its length. The front hollow chamber contains short-range nitrification microbial suspension packing, and the rear hollow chamber contains anaerobic ammonia oxidation microbial suspension packing. The area between the front and rear hollow chambers of the elongated shell is vertically flexible. The front end of the elongated shell has an inlet, and the rear end has an outlet. The elongated shell is equipped with a power component, a buoyancy component, and a propeller. The power component provides power output to the buoyancy component and the propeller.

2. The floating, jet-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device as described in claim 1, characterized in that, The buoyancy component includes a first airbag, a second airbag, an air pump, and an air supply pipe with an electronic valve. The first airbag is located at the bottom front end of the elongated shell, and the second airbag is located at the bottom rear end of the elongated shell. The air pump is connected to the first airbag and the second airbag respectively through the air supply pipe.

3. The floating, jet-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device as described in claim 2, characterized in that, The bottom side of the elongated shell is equipped with an obstacle probe and a water quality probe.

4. The floating, jet-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device as described in claim 3, characterized in that, The buoyancy component also includes a central controller. The inflation volume of the air pump into the first and second airbags is freely adjusted by the central controller according to the water quality of the sludge leachate. When the water quality probe detects that the difference between the ammonia nitrogen concentration and the nitrite nitrogen concentration in the water is no more than 20%, the central controller adjusts the inflation volume of the first and second airbags to be the same, so that the top of the flexible cover is just exposed above the surface of the sludge leachate. When the water quality probe detects that the ammonia nitrogen concentration in the water is more than 20% higher than the nitrite nitrogen concentration, the central controller adjusts the inflation volume of the first airbag to be less than the inflation volume of the second airbag, so that the top of the front end of the flexible cover is just exposed above the surface of the sludge leachate. When the sludge leachate is discharged, the rear end of the flexible cover floats above the liquid surface to enhance short-cut nitrification. The rear end of the flexible cover floats so as not to expose the top of the outlet above the liquid surface. When the water quality probe detects that the ammonia nitrogen concentration in the water is more than 20% lower than the nitrite nitrogen concentration, the central controller adjusts the inflation volume of the first airbag to be greater than that of the second airbag, so that the front top of the flexible cover floats above the liquid surface, and the rear end of the flexible cover just exposes the sludge leachate surface, thereby enhancing anaerobic ammonia oxidation. The front end of the flexible cover floats so as not to expose the bottom of the inlet above the liquid surface.

5. The floating, jet-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device as described in claim 2, characterized in that, The front hollow cavity is also equipped with an oxygenation device, which is connected to the gas supply pipeline.

6. The floating, jet-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device as described in claim 5, characterized in that, The oxygenation component is a micron-sized aeration disc located at the bottom of the front hollow cavity, and the micron-sized aeration disc is equipped with multiple micron-sized aeration disc nozzles.

7. The floating, jet-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device as described in claim 2, characterized in that, The thrusters are two in number and arranged side by side at the bottom of the elongated housing near the second airbag. Each thruster includes a thruster mounting bracket, a thruster motor, a thruster fan, and a thruster protective cover. The thruster mounting bracket is fixed to the bottom side of the elongated housing, the thruster motor is fixed inside the thruster mounting bracket, the thruster fan is fixed to the output end of the thruster motor, and the thruster protective cover is fixed to the side of the thruster mounting bracket. The thruster fan is located inside the thruster protective cover. The two thrusters control the direction of the device body by the difference in their rotational speed.

8. The floating, jet-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device as described in claim 1, characterized in that, The power component is a wind power generation assembly, which includes a generator housing fixed to the top side of the elongated shell. A rotating rod is rotatably mounted on the generator housing. Three connecting rods are fixed at equal intervals at the top of the rotating rod. Wind turbine plates are fixed on the three connecting rods respectively. A generator and a battery are provided inside the generator housing. The input end of the generator is connected to the rotating rod. The generator and the battery are electrically connected.

9. The floating, jet-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device as described in claim 1, characterized in that, The flexible cover includes a rubber shell and a first metal frame, a movable connecting rod, and a second metal frame connected in sequence. The rubber shell is fixedly sleeved on the first metal frame and the second metal frame, and the first metal frame and the second metal frame are movably connected through the movable connecting rod.

10. The floating, jet-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device as described in claim 1, characterized in that, A mesh plate is provided between the short-range nitrification functional microbial suspension packing and the anaerobic ammonia oxidation functional microbial suspension packing, and the mesh plate has water-permeable mesh holes.

11. The floating, jet-flow short-cut nitrification-anaerobic ammonium oxidation coupled denitrification device as described in claim 1, characterized in that, Both the short-range nitrification functional microbial suspension packing and the anaerobic ammonia oxidation functional microbial suspension packing are arranged in a uniform grid pattern.

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