A movable air-stirred denitrification reactor

Abstract

The utility model discloses a movable gas stirring denitrification reactor, related to sewage treatment technical field. The reactor includes: reactor main part, moving mechanism, including: two deformable guide rails and two moving parts, deformable guide rail can be deformed according to preset path, and moving part moves along the path of reactor main part side edge under the guidance of deformable guide rail, gas stirring mechanism, including: telescopic aeration pipe, variable length pipeline and fan, both ends of telescopic aeration pipe are connected with two moving parts respectively, a plurality of aeration holes are equipped on the pipe wall of telescopic aeration pipe, one end of variable length pipeline is communicated telescopic aeration pipe, and the other end is connected fan, and variable length pipeline is used to deliver stirring gas to telescopic aeration pipe. The movable gas stirring denitrification reactor of the utility model embodiment, by adopting deformable guide rail structure, can adapt to irregular pool type, and the versatility and engineering application range of equipment are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a mobile gas-stirred denitrification reactor. Background Technology

[0002] In the denitrification process of wastewater treatment, the uniformity of mixing within the reactor is a key factor in ensuring nitrogen removal efficiency. However, existing denitrification reactors commonly suffer from the problem of material or sludge accumulating at the bottom and corners, forming "dead zones" that are difficult to eliminate. These dead zones not only reduce the effective volume of the reactor but also lead to localized mass transfer obstruction and uneven substrate distribution. This causes a decline in the activity of denitrifying bacteria due to a lack of carbon source or nitrate nitrogen, and in severe cases, it can even lead to anaerobic putrefaction, producing odors and affecting effluent quality. The main reason for these dead zones is the uneven flow field distribution and limited mixing range of traditional stirring methods (such as mechanical stirring or fixed hydraulic circulation). Especially in areas far from the reactor or near the tank walls and bottom, the flow velocity is low, and the driving force is insufficient to effectively resuspend the sediment. With long-term operation, the accumulated sediment requires periodic shutdowns for cleaning, significantly increasing the operational and maintenance burden. Therefore, eliminating dead zones caused by stirring blind spots has become a pressing technical challenge for improving the performance of denitrification reactors. Utility Model Content

[0003] To address the technical problems existing in the prior art, this utility model provides a mobile gas-stirred denitrification reactor. The technical solution is as follows:

[0004] This utility model provides a mobile gas-stirred denitrification reactor, comprising:

[0005] Reactor body;

[0006] The moving mechanism includes: two deformable guide rails and two moving parts; the two deformable guide rails are arranged along the opposite two sides of the reactor body; the deformable guide rails can deform along a preset path, and each moving part is movably connected to one deformable guide rail, and the moving part moves along the path of the side edge of the reactor body under the guidance of the deformable guide rails.

[0007] A gas mixing mechanism includes: a telescopic aeration pipe, a variable-length pipe, and a blower; both ends of the telescopic aeration pipe are connected to two moving parts, and it can extend and retract as the distance between the moving parts changes; the wall of the telescopic aeration pipe is provided with multiple aeration holes; one end of the variable-length pipe is connected to the telescopic aeration pipe, and the other end is connected to the blower; the variable-length pipe is used to deliver mixing gas into the telescopic aeration pipe; the variable-length pipe is provided with a regulating valve;

[0008] A carbon source dosing device includes: a carbon source storage tank and a metering pump; the carbon source storage tank is connected to the reactor body via the metering pump;

[0009] The intelligent control system includes a control module; the control module is connected to a regulating valve and a metering pump respectively, and is used to control the opening degree of the regulating valve and the metering pump respectively, so as to adjust the delivery amount of stirring gas and the amount of carbon source added.

[0010] Optionally, the deformable guide rail includes: multiple guide rail segments that are hinged to each other, each guide rail segment being rotatable relative to the other, so that the deformable guide rail can deform along a preset path and guide the moving parts to move.

[0011] Optionally, the deformable guide rail is integrally formed from a flexible material and can deform along a preset path under the action of external force to guide the movement of moving parts.

[0012] Optionally, the gas stirring mechanism further includes a coiling machine; the variable length pipe is a coiled pipe wound on the coiling machine.

[0013] Optionally, the moving mechanism further includes: a deformable support, on which a plurality of fixing holes are provided along its length; the bottom of the deformable guide rail is provided with a guide groove extending along its length, and a fastener that is slidably disposed in the guide groove and engages with the fixing holes.

[0014] Optionally, the gas stirring mechanism includes multiple retractable aeration pipes, and the variable-length pipe is connected to the multiple retractable aeration pipes through a gas distributor.

[0015] Optionally, the distance between two adjacent aeration holes is 0.005m-0.01m.

[0016] Optionally, the intelligent control system further includes:

[0017] An online dissolved oxygen detector is used to monitor the dissolved oxygen concentration inside the reactor body;

[0018] The control module is connected to both the dissolved oxygen online detector and the regulating valve. It is used to compare the monitored dissolved oxygen concentration with the preset dissolved oxygen value and adjust the opening of the regulating valve in real time according to the comparison result to control the delivery volume of the stirring gas.

[0019] Optionally, the intelligent control system further includes:

[0020] An online ammonia nitrogen and nitrate nitrogen detector is used to monitor the concentrations of ammonia nitrogen and nitrate nitrogen within the reactor body.

[0021] The control module is connected to the online ammonia nitrogen and nitrate nitrogen detector and the metering pump, respectively. It is used to calculate the carbon source dosage based on the monitored ammonia nitrogen concentration, nitrate nitrogen concentration and preset carbon-nitrogen ratio, and control the metering pump to add carbon source according to the carbon source dosage.

[0022] Optionally, the dissolved oxygen concentration is controlled within the range of 0.1-0.3 mg / L.

[0023] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0024] (1) The mobile air-stirred denitrification reactor of this utility model adopts a deformable guide rail structure, which can adapt to irregular pool shapes such as circular, irregular, and polygonal zigzag shapes. It does not require customized special tracks, which greatly improves the versatility of the equipment and the scope of engineering application. The guide rail can guide the moving parts to run along the complete path of the edge of the pool, and drive the telescopic aeration pipe to move in all directions at the bottom of the pool. It effectively covers the corner areas that are difficult to reach by traditional fixed aeration and the "dead corners" where sludge is easy to accumulate, completely eliminating the mixing blind zone and improving the mass transfer uniformity and mixing efficiency in the reactor. The dynamically moving aeration pipe periodically releases bubbles in the spatial and temporal dimensions, forming an orderly disturbed flow field, avoiding local over-aeration or insufficient stirring, promoting full contact and efficient reaction between sludge and sewage and denitrifying bacteria and nitrate nitrogen and carbon source, and significantly improving denitrification performance. Compared with mechanical stirring or high-density fixed aeration systems, this device uses local moving air stirring to achieve full pool mixing, which requires less air volume and has low energy consumption. It also does not require pre-burying a large number of aeration pipes at the bottom of the pool, which reduces the construction difficulty and later maintenance cost.

[0025] (2) The mobile gas-stirred denitrification reactor of this utility model embodiment, combined with online monitoring of multiple parameters such as dissolved oxygen, ammonia nitrogen, and nitrate nitrogen and PLC closed-loop control, can automatically adjust the dissolved oxygen level, carbon source addition amount and stirring operation mode, realize intelligent operation, reduce manual intervention, and significantly improve the operation stability and automation level. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a movable gas-stirred denitrification reactor according to an embodiment of the present invention;

[0028] Figure 2This is a schematic diagram of the structure of a mobile gas-stirred denitrification reactor, another embodiment of the present invention.

[0029] Figure label:

[0030] 100 - Reactor body;

[0031] 201-Deformable guide rail; 202-Moving part; 204-Limiting part; 205-Drive shaft;

[0032] 301-Retractable aeration pipe; 302-Variable length pipe; 303-Blower; 304-Gas distributor; 305-Regulating valve; 306-Roller coiler;

[0033] 401 - Dissolved oxygen online detector; 402 - Ammonia nitrogen and nitrate nitrogen online detector; 403 - Carbon source dosing device; 404 - Control module. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0035] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0036] It should be noted that the terms "up", "down", "left", "right", "front" and "back" used in this utility model are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0037] like Figures 1 to 2As shown in the figure, this utility model provides a mobile air-stirred denitrification reactor, suitable for the anoxic denitrification process section of a wastewater treatment system. It aims to solve problems such as uneven mixing, sludge accumulation dead zones, high energy consumption, and complex maintenance inherent in traditional fixed aeration or mechanical stirring systems. This reactor achieves dynamic stirring throughout the entire tank area through a mobile air-stirring device, and combines this with an intelligent control system to achieve precise control of dissolved oxygen and carbon source addition, significantly improving denitrification efficiency and operational stability.

[0038] The mobile gas-stirred denitrification reactor includes: reactor body 100, moving mechanism, gas stirring mechanism and intelligent control system.

[0039] The reactor body 100 is a rectangular or square concrete or steel tank that contains wastewater and carries out denitrification biological reactions. Mounting platforms are provided on the top of both side walls to support the moving mechanism.

[0040] The moving mechanism includes two deformable guide rails 201 and two moving parts 202, which are used to drive the aeration device to move back and forth along the length of the reactor body 100 to achieve dynamic gas mixing.

[0041] Two deformable guide rails 201 are respectively arranged along the opposite two edges of the reactor body 100, preferably installed on a pre-set mounting platform on the top or side wall of the tank wall. As the guiding and load-bearing structure of the moving component 202, the deformable guide rails 201 not only bear the operating load of the moving component 202, but also have the ability to undergo controllable bending or stretching deformation along a preset path under the action of external forces (such as traction ropes, drive motors, or mechanical push rods), thereby guiding the moving component 202 to move along the actual contour path of the side edge of the reactor body 100. It should be noted that the preset path refers to the specific spatial curve or broken line formed by the deformation of the deformable guide rail 201 under the action of external driving force, whose shape is consistent with the actual direction of the edge of the reactor body 100, used to precisely guide the moving component 202 to reciprocate along the specified route. This preset path is pre-set according to the geometric contour of the edge of the reactor body 100, guiding the moving component 202 to move along the edge of the reactor body 100, ensuring that the mobile aeration device can cover the entire reaction area and achieve mixing without dead zones.

[0042] The deformable guide rail 201 is structurally designed to adapt to the edge of straight, curved, polygonal, or irregular polygonal pool bodies. In specific embodiments, the deformable guide rail 201 can adopt a modular hinged structure or a continuous flexible material integral molding structure. The modular structure consists of multiple guide rail segments hinged together by a pivot or universal joint. Adjacent segments can rotate relative to each other around the connection point, achieving local bending, giving the deformable guide rail 201 good overall bendability, enabling it to adapt to the curved or polygonal paths of the pool body edge. The surface of the deformable guide rail 201 is provided with grooves or guide rail surfaces for sliding connection of the moving parts 202. The flexible integral structure is made of high-strength elastic materials (such as reinforced TPU, nylon composite materials, or stainless steel corrugated pipes), possessing a certain degree of rigidity and elasticity, and can undergo controllable deformation along a preset path under traction.

[0043] The moving component 202 can be designed as a mobile trolley, movably connected to a deformable guide rail 201, and can slide on the guide rail via rollers or a slider structure. One side of the mobile trolley is equipped with a drive motor as the main power source; the other side of the mobile trolley is linked to the main side trolley through a transmission shaft 205 set at the top, ensuring that the two trolleys run synchronously and avoiding twisting of the aeration pipe or uneven force due to asynchrony.

[0044] The moving mechanism also includes a deformable support for fixing the deformable guide rail 201 to the edge of the tank. This deformable support can be made of flexible material, possessing good bending properties to adapt to the curved or folded paths of the tank edge. The deformable support has multiple fixing holes along its length; the bottom of the deformable guide rail 201 has a guide groove extending along its length, within which fasteners (such as bolts or pins) are slidably installed. These fasteners can be selectively inserted into fixing holes at different positions, allowing for flexible adjustment of the guide rail's installation angle and position to adapt to different tank structure requirements. The deformable support is used to fix the deformable guide rail 201. Under external driving force, it deforms through its own structure, pre-setting its shape according to the edge geometry of the reactor body 100, thereby allowing the deformable guide rail 201 to conform to and guide the moving component 202 to move along the edge of the reactor body 100.

[0045] Traditional fixed guide rails are only suitable for regular rectangular tanks, while the deformable guide rail 201 of this utility model can be applied to irregular tanks. It can dynamically adjust its shape according to the geometry of different reactors (such as circular, irregular, and polygonal polygonal shapes) without the need for customized special tracks, which significantly improves the versatility of the equipment and the scope of engineering applications. At the same time, by guiding the moving part 202 to run along the complete path of the tank edge (including corners and recessed areas), it drives the retractable aeration pipe 301 to move in all directions at the bottom of the tank, effectively covering the corner areas and "dead corners" where sludge is easy to accumulate that are difficult to reach by traditional fixed aeration, completely eliminating mixing blind spots and improving the overall mass transfer efficiency of the reactor. The dynamically moving aeration pipes release bubbles alternately in space and time, forming a periodic turbulent flow field. This avoids local over-aeration or insufficient mixing, ensuring full contact between sludge and wastewater. It promotes the efficient reaction of denitrifying bacteria with nitrate nitrogen and carbon sources, significantly improving denitrification efficiency. Compared to mechanical mixers or high-density fixed aeration systems, this device achieves full-tank mixing through localized, mobile air mixing. It requires less air volume and has low energy consumption. It also eliminates the need to pre-embed a large number of aeration pipes at the bottom of the tank, reducing construction difficulty and maintenance workload.

[0046] The gas stirring mechanism is used to continuously supply stirring gas (usually air) into the reactor body 100. The upward flow and induced water flow generated by the gas release agitate the water body, promote the full mixing of wastewater and activated sludge, enhance mass transfer efficiency, and effectively prevent sludge from settling at the bottom of the tank to form "dead corners", thus ensuring the stable progress of the denitrification reaction.

[0047] The gas mixing mechanism includes a telescopic aeration pipe 301, a variable length pipe 302, a blower 303, a gas distributor 304, a regulating valve 305, and a coiler 306.

[0048] The retractable aeration pipe 301 serves as the core stirring element, with its two ends connected to two moving parts 202 (i.e., moving trolleys). Its length dynamically extends and retracts depending on the distance between the two moving trolleys. In this embodiment, the retractable aeration pipe 301 is made of corrosion-resistant and highly flexible TPU (thermoplastic polyurethane elastomer rubber), which has good wear resistance, resistance to microbial erosion, and dimensional stability under long-term use. It is suitable for complex water quality conditions and frequent mechanical deformation in wastewater treatment environments.

[0049] Multiple microporous aeration holes are evenly distributed on the wall of the retractable aeration pipe 301, with a distance of 0.005m-0.01m between adjacent holes to ensure uniform bubble distribution and no blind spots in the mixing coverage. To prevent the retractable aeration pipe 301 from floating off the bottom of the tank due to buoyancy when inflated, thus affecting the mixing effect, a counterweight structure is integrated into the outer wall or inside of the pipe. This counterweight can take the form of stainless steel chains, ceramic rings, lead granule filling layers, or high-density polymer strips, and is evenly distributed along the axial direction of the pipe to ensure that the aeration pipe always adheres to the bottom of the tank, maximizing the bottom mixing function and effectively disturbing the deposited sludge.

[0050] One end of the variable-length pipe 302 is connected to the retractable aeration pipe 301, and the other end is connected to the blower 303, used to transport agitated gas. The variable-length pipe 302 needs to meet the length change requirements during the reciprocating movement of the mobile trolley, therefore it is designed as a retractable or extendable structure. In this embodiment, the variable-length pipe 302 is a coiled pipe (such as a high-pressure hose or spiral wire winding pipe) wound on a coiling machine 306. The coiling machine 306 has a built-in servo motor or stepper motor driven drum device, which can automatically control the winding and unwinding of the variable-length pipe 302 according to the real-time position of the mobile trolley, ensuring a continuous and stable air supply and avoiding blockage, leakage, or damage caused by pipe tension or accumulation.

[0051] In applications requiring higher stirring intensity or multi-point coverage, the gas stirring mechanism can include multiple parallel retractable aeration pipes 301. A variable-length pipe 302 is connected to each retractable aeration pipe 301 via a gas distributor 304 (such as a multi-way diverter valve or gas distribution box), evenly distributing the non-airflow from the blower 303 to each aeration pipe. The gas distributor 304 can be equipped with a flow regulation unit to balance and regulate the gas volume of each branch, ensuring equal gas supply to each aeration pipe, achieving multi-point synchronous and coordinated stirring, and significantly improving the mixing uniformity and processing capacity within a large-volume reactor.

[0052] A regulating valve 305 is installed on the variable-length pipe 302, located between the outlet of the blower 303 and the gas distributor 304, and is used to precisely regulate the gas flow rate entering the retractable aeration pipe 301. This regulating valve 305 can be an electric proportional valve or a pneumatic regulating valve 305, receiving control signals from the intelligent control system to adjust its opening. Through the dynamic control of the regulating valve 305, the aeration intensity can be flexibly adjusted according to the actual dissolved oxygen level, sludge concentration, or process load in the reactor, satisfying the thrust required for stirring while avoiding excessive air supply that could lead to excessive dissolved oxygen and inhibit denitrifying bacteria activity.

[0053] The intelligent control system is used to realize real-time monitoring and automatic adjustment of reactor operating parameters to ensure that the denitrification reaction is carried out under optimal operating conditions.

[0054] The intelligent control system includes an online dissolved oxygen detector 401, an online ammonia nitrogen and nitrate nitrogen detector 402, a carbon source dosing device 403, and a control module 404.

[0055] The dissolved oxygen online detector 401 is installed in the effluent area or middle water body of the reactor body 100 to monitor the dissolved oxygen concentration (DO) in real time and transmit the data to the control module 404. The measurement range is 0-20 mg / L and the accuracy is ±0.1 mg / L.

[0056] The 402 online ammonia nitrogen and nitrate nitrogen detector is used for real-time monitoring of ammonia nitrogen (NH3-N) and nitrate nitrogen (NO3) concentrations within the reactor body 100. - The -N) variation can be set in the middle or end of the reactor body 100.

[0057] The carbon source dosing device 403 includes a carbon source storage tank and a metering pump, used to add external carbon sources such as sodium acetate and methanol into the reactor body 100. The carbon source storage tank is equipped with a liquid level sensor to monitor the liquid level in real time.

[0058] The control module 404, as the core control unit of the system, adopts a PLC (Programmable Logic Controller) or an industrial-grade embedded computer as the main controller, integrating data processing and control algorithms. The control module 404 receives real-time data from each online detector via shielded cable or industrial Ethernet, analyzes and judges it based on preset control logic, generates corresponding control commands, and outputs them to the actuator.

[0059] The control module 404 is electrically connected to the regulating valve 305, the metering pump, the coil machine 306, and the drive motor of the mobile trolley to achieve closed-loop control.

[0060] Dissolved oxygen control logic: The control module 404 compares the real-time DO value collected by the online dissolved oxygen detector 401 with a preset threshold. In this embodiment, the optimal dissolved oxygen range required for denitrification is 0.1-0.3 mg / L. When the detected DO value is below 0.1 mg / L, the control module 404 outputs a signal to increase the opening of the regulating valve 305, increasing the air supply; when the detected value is above 0.3 mg / L, the opening of the regulating valve 305 is decreased, reducing the aeration intensity, thereby stabilizing the dissolved oxygen within the optimal range and avoiding inhibition of denitrifying bacteria activity due to excessively high dissolved oxygen levels.

[0061] Carbon source addition control logic: The control module 404 calculates the carbon source addition amount based on the ammonia nitrogen concentration and nitrate nitrogen concentration data monitored by the online ammonia nitrogen and nitrate nitrogen detector 402 and the preset carbon-nitrogen ratio, starts the carbon source addition device 403, and controls the metering pump to add carbon source according to the carbon source addition amount, so as to achieve precise addition on demand.

[0062] In addition, the control module 404 also integrates a collaborative control function for the moving mechanism. Operators can preset the operating parameters of the moving trolley through the human-machine interface, including operating speed, travel length, reciprocating frequency, or pause time. During operation, the moving trolley's drive motor or position sensor feeds back real-time speed and position signals to the control module 404. The control module 404 dynamically controls the retraction and extension of the coiling machine 306 based on the relative distance between the moving trolley and the coiling machine 306: when the trolley moves away from the coiling machine 306, the coiling machine 306 simultaneously releases the pipeline; when the trolley returns, the coiling machine 306 automatically retracts the pipeline, maintaining the gas supply pipeline at a moderate tension to prevent tangling or breakage.

[0063] To enhance the system's ease of operation and visualization, this intelligent control system can also be equipped with a human-machine interface unit, such as an industrial touchscreen, remote control panel, or mobile terminal APP. Operators can use this unit to set process parameters such as dissolved oxygen threshold, carbon source dosage ratio, and trolley operation mode, and view real-time DO, NH3-N, and NO3 levels. - Information such as -N concentration curve, equipment operating status, and carbon source balance is displayed, and manual intervention (such as forced start-stop and inching adjustment) is supported to meet the needs of different operating scenarios.

[0064] Furthermore, the intelligent control system can also be equipped with an early warning and safety protection module. When the control module 404 detects that the mobile trolley is stuck, the motor is overloaded, the liquid level in the carbon source storage tank is too low, or the communication is abnormal, the control module 404 will automatically alarm and prompt the operator through the human-machine interaction unit, and execute shutdown protection if necessary.

[0065] The operation process of the mobile air-stirred denitrification reactor in this embodiment is as follows: During operation, the blower 303 starts, and air is delivered to the retractable aeration pipe 301 through the variable length pipe 302, regulating valve 305, and gas distributor 304. Microbubbles are released through the aeration holes to achieve stirring. At the same time, the drive motor drives the two moving trolleys on both sides to reciprocate on the deformable guide rail 201, causing the aeration pipe to move back and forth at the bottom of the tank, breaking the static sedimentation zone and achieving mixing throughout the entire tank without dead zones. The intelligent control system continuously collects DO, NH3-N, and NO3. - Parameters such as -N are used to dynamically adjust the aeration rate and carbon source dosage to ensure that the denitrification reaction proceeds efficiently and stably.

[0066] The mobile denitrification reactor of this utility model can automatically adjust dissolved oxygen, carbon source addition and stirring mode through multi-parameter online monitoring and PLC closed-loop control, without the need for frequent manual intervention, thus greatly improving the level of intelligent operation and stability.

[0067] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A mobile gas-stirred denitrification reactor, characterized in that, include: Reactor body; The moving mechanism includes: two deformable guide rails and two moving parts; the two deformable guide rails are arranged along the opposite two sides of the reactor body; the deformable guide rails can deform along a preset path, and each moving part is movably connected to one deformable guide rail, and the moving part moves along the path of the side edge of the reactor body under the guidance of the deformable guide rails. A gas mixing mechanism includes: a telescopic aeration pipe, a variable-length pipe, and a blower; both ends of the telescopic aeration pipe are connected to two moving parts, and it can extend and retract as the distance between the moving parts changes; the wall of the telescopic aeration pipe is provided with multiple aeration holes; one end of the variable-length pipe is connected to the telescopic aeration pipe, and the other end is connected to the blower; the variable-length pipe is used to deliver mixing gas into the telescopic aeration pipe; the variable-length pipe is provided with a regulating valve; A carbon source dosing device includes: a carbon source storage tank and a metering pump; the carbon source storage tank is connected to the reactor body via the metering pump; The intelligent control system includes a control module; the control module is connected to a regulating valve and a metering pump respectively, and is used to control the opening degree of the regulating valve and the metering pump respectively, so as to adjust the delivery amount of stirring gas and the amount of carbon source added.

2. The mobile gas-stirred denitrification reactor according to claim 1, characterized in that, The deformable guide rail includes multiple guide rail segments that are hinged to each other. Each guide rail segment can rotate relative to the other, so that the deformable guide rail can deform along a preset path and guide the moving parts to move.

3. The mobile gas-stirred denitrification reactor according to claim 1, characterized in that, The deformable guide rail is integrally formed from flexible material and can deform along a preset path under the action of external force to guide the movement of moving parts.

4. The mobile gas-stirred denitrification reactor according to claim 1, characterized in that, The gas stirring mechanism also includes a coiling machine; the variable length pipe is a coiled pipe wound on the coiling machine.

5. The mobile gas-stirred denitrification reactor according to claim 1, characterized in that, The moving mechanism further includes: a deformable support, on which a plurality of fixing holes are provided along its length; the bottom of the deformable guide rail is provided with a guide groove extending along its length, and a fastener that is slidably disposed in the guide groove and engages with the fixing holes.

6. The mobile gas-stirred denitrification reactor according to claim 1, characterized in that, The gas mixing mechanism includes multiple retractable aeration pipes, and the variable length pipe is connected to the multiple retractable aeration pipes through a gas distributor.

7. The mobile gas-stirred denitrification reactor according to claim 1, characterized in that, The distance between two adjacent aeration holes is 0.005m-0.01m.

8. The mobile gas-stirred denitrification reactor according to claim 1, characterized in that, The intelligent control system also includes: An online dissolved oxygen detector is used to monitor the dissolved oxygen concentration inside the reactor body; The control module is connected to both the dissolved oxygen online detector and the regulating valve. It is used to compare the monitored dissolved oxygen concentration with the preset dissolved oxygen value and adjust the opening of the regulating valve in real time according to the comparison result to control the delivery volume of the stirring gas.

9. The mobile gas-stirred denitrification reactor according to claim 1, characterized in that, The intelligent control system also includes: An online ammonia nitrogen and nitrate nitrogen detector is used to monitor the concentrations of ammonia nitrogen and nitrate nitrogen within the reactor body. The control module is connected to the online ammonia nitrogen and nitrate nitrogen detector and the metering pump, respectively. It is used to calculate the carbon source dosage based on the monitored ammonia nitrogen concentration, nitrate nitrogen concentration and preset carbon-nitrogen ratio, and control the metering pump to add carbon source according to the carbon source dosage.

10. The mobile gas-stirred denitrification reactor according to claim 8, characterized in that, The dissolved oxygen concentration is controlled within the range of 0.1-0.3 mg / L.

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