Reoxygenation device for black and odorous river regulation and intelligent control method

Abstract

The invention relates to a reoxygenation device for black and odorous river regulation and an intelligent control method. The problems that in the prior art, a river channel aeration device is difficult to dynamically adjust according to the water quality environment, energy consumption is high, and real-time fluctuation of dissolved oxygen in a water body cannot be responded are solved. The system comprises a floating type detection platform, a water quality data acquisition mechanism is arranged in the floating type detection platform, the water quality data acquisition mechanism is remotely connected with a cloud control platform, the floating type detection platform is further provided with a reoxygenation unit, and the reoxygenation unit is connected with reoxygenation devices arranged on the two sides of a river channel in a staggered mode. And the floating detection platform positions the two sides of the river channel through the anchoring mechanism. The reoxygenation device has the advantages that the power and frequency of the reoxygenation device can be dynamically adjusted according to the water quality environment, the energy consumption is low, the reoxygenation water level and the reoxygenation amount are dynamically configured according to the real-time fluctuation of the dissolved oxygen in the water body, the adaptability is good, and the reoxygenation effect is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of river management, in particular to a reoxygenation device and intelligent control method for black and odorous river management. BACKGROUND

[0002] With the increasing improvement of people's living standards, the demand for living environment is also getting higher and higher, among which water conservancy plays a crucial role. For example, in cities or scenic spots, in order to meet the health requirements of ecological environment or the needs of irrigation in agriculture and forestry, it is often necessary to use the original natural river or adopt the method of artificial river to introduce water flow from the upstream to form a certain river in the local area to meet the needs of environmental improvement or industrial and agricultural production. At present, in urban, town or rural rivers, eutrophication is a common water pollution phenomenon, which is caused by excessive content of nitrogen, phosphorus and other plant nutrients. In human settlements, a large amount of industrial wastewater and domestic sewage with high nitrogen and phosphorus content and plant nutrients in farmland runoff are discharged into rivers, which will cause a large number of reproduction of aquatic organisms, especially algae. After the death of algae, they are deposited on the water bottom, and microorganisms decompose and consume a large amount of dissolved oxygen, which changes the population and species of biomass in the river, and destroys the ecological balance of the water body. The existing artificial management method is low in efficiency, time-consuming and laborious. In addition, the traditional river aeration device is difficult to dynamically adjust according to the water quality environment, has high energy consumption, and the manual or fixed program control has hysteresis, which cannot respond to the real-time fluctuation of water dissolved oxygen, affecting the reoxygenation effect of the river.

[0003] In order to solve the problems existing in the prior art, people have carried out long-term exploration and put forward various kinds of solutions. For example, the Chinese patent document discloses a river management and purification method, application number CN201910439495.0, which includes a river water purification mechanism with a conical structure to clean the sediment deposited in the river, and then a river surface interception structure is used to treat the water algae on the river surface. The river surface interception structure includes two rotating discs arranged on both sides of the river, a cable winding around the two rotating discs and crossing the river surface, and plastic floating balls spaced at certain distances are tied on the cable. Then the river is reoxygenated by manual aeration, and finally a water retaining weir is set up in the center of the river, and biological denitrification pools are set up on both sides of the river, which are separated by a mesh screen through which fish and aquatic plant pools are separated for denitrification treatment.

[0004] The above scheme solves the problem of low efficiency, time-consuming and laborious of the existing artificial river management method to a certain extent, but the scheme still has many deficiencies, for example: it is difficult to dynamically adjust according to the water quality environment, and has high energy consumption; and the control and adjustment method has hysteresis, which affects the reoxygenation effect of the river. SUMMARY

[0005] The application aims at the above problems, and provides a reoxygenation device for black and odorous river treatment.

[0006] The application aims at the above problems, and provides a smart control method of the reoxygenation device for black and odorous river treatment.

[0007] To achieve the above-mentioned purposes, the application adopts the following technical scheme: a reoxygenation device for black and odorous river treatment, comprising a floating detection platform, a water quality data acquisition mechanism is arranged in the floating detection platform, the water quality data acquisition mechanism is remotely connected to a cloud control platform, and the floating detection platform is further provided with a reoxygenation unit, the reoxygenation unit is connected to reoxygenation devices arranged at both sides of the river in a staggered manner, and the floating detection platform is positioned at both sides of the river through an anchoring mechanism.

[0008] In the reoxygenation device for black and odorous river treatment, the floating detection platform comprises at least three groups of floating platforms connected to each other in pairs, the floating platforms are connected through telescopic limiting connecting rods, waterproof sealing frame bodies are arranged in the circumferential direction of the floating platforms, and line-passing marker buoys are arranged at the upper ends of the floating platforms, the floating platforms have loading cavities, data recording units are arranged in the loading cavities, and the data recording units are connected to the cloud control platform through data transmission modules and transmit monitoring data.

[0009] In the reoxygenation device for black and odorous river treatment, the water quality data acquisition mechanism comprises telescopic adjusting rods arranged on the waterproof sealing frame bodies and extending towards the bottom of the river, detection units are arranged at the bottoms of the telescopic adjusting rods, the detection units comprise dissolved oxygen sensors, temperature sensors and ammonia nitrogen concentration sensors, self-cleaning brushes are integrated on the detection units, and the detection units are connected to the data recording units arranged in the loading cavities through transmission cables arranged in the telescopic adjusting rods.

[0010] In the reoxygenation device for black and odorous river treatment, the reoxygenation unit comprises reoxygenation insertion tubes arranged on the waterproof sealing frame bodies, the reoxygenation insertion tubes are connected to the reoxygenation devices through reoxygenation conduits, the reoxygenation conduits are arranged in the line-passing marker buoys, solar cell panels are embedded on the upper walls of the reoxygenation conduits, the solar cell panels are connected to storage batteries through inverters, the data transmission modules and the data recording units are powered by the storage batteries, the lengths of the telescopic adjusting rods at the bottoms of the same group of floating platforms are different, that is, the heights of the dissolved oxygen sensing units in the river are different, and the heights are respectively divided into deep water level height, middle water level height and upper water level height, and the reoxygenation water level of the reoxygenation insertion tube is correspondingly arranged with the water level height of the corresponding dissolved oxygen sensing unit.

[0011] In the above-mentioned reoxygenation device for black and odorous river treatment, the reoxygenation device comprises an intelligent control box, the intelligent control box is internally provided with a main control unit, the main control unit is connected with a cloud control platform to receive control instruction signals, the intelligent control box is respectively connected with a jet aerator, a micro-porous aerator disc and a spiral aerator, the jet aerator extends to a high water level position of the river through a first aeration pipe, the micro-porous aerator disc is connected with a reoxygenation guide pipe through a second aeration pipe, an ultrasonic oscillator is arranged in the first aeration pipe and the second aeration pipe, and the spiral aerator is arranged at a low water level position of the river in a telescopic and adjustable manner.

[0012] In the above-mentioned reoxygenation device for black and odorous river treatment, the anchoring mechanism comprises a fixed anchor base arranged at the edge of the river, the fixed anchor base is connected with a floating detection platform through an anchor rod arranged at the bottom of the river, a plurality of positioning anchor claws are equidistantly arranged at the bottom of the anchor rod and positioned at the bottom of the riverbed, the end of the anchor rod is connected with the floating detection platform through a positioning rope, and a cable winch is arranged at one side of the fixed anchor base and connected with the floating detection platform through a traction cable.

[0013] According to the above-mentioned reoxygenation device, an intelligent control method is provided, and the method comprises the following steps: S1, collecting environmental data in the river; S2, formulating a reoxygenation control strategy; S3, adjusting a reoxygenation water level layer and a reoxygenation amount according to the reoxygenation strategy and the collected environmental data; S4, dynamically optimizing reoxygenation control logic.

[0014] In step S1, the types of the collected environmental data in the river include dissolved oxygen concentration, temperature and ammonia nitrogen concentration, the above-mentioned data are collected by a detection unit at regular intervals and transmitted to a data recording unit, the data recording unit remotely transmits the data to a cloud control platform, and the cloud control platform marks the collection time of the received data and periodically summarizes.

[0015] In step S2, the reoxygenation control strategy comprises a control target and a reoxygenation control strategy, and the control target comprises: an oxygen deficit coefficient OD control target: a surface water level OD is greater than or equal to 3 mg / L, a middle water level 2.5 mg / L is greater than or equal to OD and is greater than or equal to 2.0 mg / L, and a bottom water level OD is greater than or equal to 1.5 mg / L; a maximum aeration intensity: the jet aerator is 538 m³ / h, and the micro-porous aerator disc is 545 m³ / h; a reoxygenation control strategy: when DO is less than 1.5 mg / L, the jet aerator is started to run at full power; when DO reaches 2 mg / L, the micro-porous aerator is switched to an intermittent mode, and the working / rest time ratio is 1:2; If the ammonia nitrogen concentration is greater than 2 mg / L, the aeration cycle is extended to a work / rest ratio of 2:1 to strengthen the nitrification reaction.

[0016] The step S3 specifically comprises the following steps: S31, monitoring the dissolved oxygen concentration, temperature and ammonia nitrogen concentration of the deep water level, middle water level and upper water level of the current position by the detection unit respectively; S32, uploading the monitoring data to the cloud control platform, and comparing the monitored data with the control target parameters by the cloud control platform; S33, sending the reoxygenation instruction to the intelligent control box according to the data comparison result; S34, starting the reoxygenation operation of the water level position needing reposition by the jet aerator, the micro-porous aerator disc and the spiral aerator according to the reoxygenation instruction; In step S5, the reoxygenation control logic trains the LSTM neural network model based on the historical data recorded by the cloud control platform, predicts the DO change trend in the future for several hours, adjusts the aeration strategy in advance and adopts the intermittent aeration optimization algorithm for reoxygenation control: the intermittent aeration optimization algorithm comprises the following steps: S51, calculating the oxygen deficiency coefficient according to the real-time DO value, OD=DO_sat-DO_actual; S52, dynamically adjusting the aeration cycle T_cycle, T_cycle=T_base x (1+e^(-k x OD)); wherein T_base is the base cycle of 30 minutes, and k is the attenuation coefficient of 0.5; S53, in the aeration stage T_on, the power ratio of the jet aerator and the micro-porous aerator disc is allocated according to the following formula: P_jet=100% x (1-DO_actual / DO_target), P_micro=100%-P_jet.

[0017] Compared with the prior art, the advantages of the present application are that: 1. Precise reoxygenation: matching the microbial denitrification demand of different water levels, synchronously improving the dissolved oxygen level and the ammonia nitrogen removal rate; 2. High efficiency and energy saving: intermittent aeration algorithm and dynamic power distribution, improving the energy saving effect and reducing the energy consumption; 3. Strong adaptability: modular platform + self-adaptive anchoring, suitable for black and odorous rivers with large water level fluctuation and complex bottom, improving the detection stability; 4. Low maintenance cost: ultrasonic anti-blocking + self-cleaning design, significantly reducing the manual maintenance frequency; 5. Ecological friendly: flexible anchoring and layered aeration technology, reducing the secondary damage to the river ecology.

[0018] In summary, the scheme can dynamically adjust the power and frequency of the reoxygenation device according to the water quality environment, has low energy consumption, and dynamically configures the reoxygenation water level and reoxygenation amount according to the real-time fluctuation of the water body dissolved oxygen, has good adaptability, and effectively improves the reoxygenation effect; the scheme is suitable for scenes such as urban landscape river, natural water body with large seasonal water level change, and has treatment efficiency and long-term sustainability. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the floating detection platform structure in the application; Figure 2 is a schematic diagram of the connection mode of the floating detection platform in the application; Figure 3 is a schematic diagram of the arrangement position of the reoxygenation device on both sides of the river in the application; Figure 4 is a schematic diagram of the anchoring mechanism in the application; Figure 5 is a local structure connection block diagram in the application; In the figure: floating detection platform 1, floating platform 11, telescopic limiting connecting rod 12, waterproof sealing frame 13, loading cavity 14, data recording unit 15, data transmission module 16, water quality data acquisition mechanism 2, telescopic adjusting rod 21, detection unit 22, cloud control platform 3, reoxygenation unit 4, reoxygenation cannula 41, reoxygenation catheter 42, wire passing marker buoy 43, reoxygenation device 5, intelligent control box 51, main control unit 52, jet aerator 53, microporous aerator disc 54, spiral aerator 55, anchoring mechanism 6, fixed anchor base 61, anchor rod 62, positioning anchor claw 63, positioning rope 64, cable winch 65, traction cable 66. DETAILED DESCRIPTION

[0020] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0021] As Figures 1-5 shown, a reoxygenation device for black and odorous river treatment includes a floating detection platform 1, the floating detection platform 1 is provided with a water quality data acquisition mechanism 2, the water quality data acquisition mechanism 2 is remotely connected to a cloud control platform 3, and the floating detection platform 1 is also provided with a reoxygenation unit 4, the reoxygenation unit 4 is connected to reoxygenation devices 5 arranged at both sides of the river in a staggered manner, and the floating detection platform 1 is positioned at both sides of the river through an anchoring mechanism 6.

[0022] The floating detection platform 1 comprises at least three groups of two-by-two connected floating platforms 11, the floating platforms 11 are connected through telescopic limiting connecting rods 12, the floating platforms 11 are circumferentially provided with waterproof sealed frame bodies 13, the upper ends of the floating platforms 11 are provided with wire passing marker floats 43, the floating platforms 11 have loading cavities 14, the loading cavities 14 are provided with data recording units 15, and the data recording units 15 are connected with a cloud control platform 3 through data transmission modules 16 and transmit monitoring data.

[0023] The telescopic limiting connecting rods 12 are connected between the floating platforms 11, the stability of the device and the adaptability to the width of the river are enhanced, the inclination or deviation of the platform caused by water flow impact is avoided, the disassembly and maintenance are facilitated, and the detection water levels of each floating platform 11 are different, so that the water quality environment detection of different water levels is provided.

[0024] Further, the water quality data collection mechanism 2 comprises telescopic adjusting rods 21 arranged on the waterproof sealed frame bodies 13 and extending towards the bottom of the river, the bottom of the telescopic adjusting rod 21 is provided with a detection unit 22, the detection unit 22 comprises a dissolved oxygen sensor, a temperature sensor and an ammonia nitrogen concentration sensor, and a self-cleaning brush is integrated on the detection unit 22, and the detection unit 22 is connected with the data recording unit 15 arranged in the loading cavity 14 through the transmission cable arranged in the telescopic adjusting rod 21.

[0025] The dissolved oxygen sensor adopts an optical fluorescence sensor, the range is 0-20mg / L, the accuracy is ±0.1mg / L, and the integrated self-cleaning brush is used for preventing biological membrane from adhering and improving the detection accuracy.

[0026] Further, the reoxygenation unit 4 comprises reoxygenation insertion tubes 41 arranged on the waterproof sealed frame bodies 13, the reoxygenation insertion tubes 41 are connected with a reoxygenation device 5 through reoxygenation conduits 42, the reoxygenation conduits 42 are arranged in the wire passing marker floats 43, a solar cell panel is embedded on the upper wall of the reoxygenation conduit 42, the solar cell panel is connected with a storage battery through an inverter, the data transmission module 16 and the data recording unit 15 are powered by the storage battery, the lengths of the telescopic adjusting rods 21 at the bottom of the same group of floating platforms 11 are different, that is, the heights of the dissolved oxygen sensing units in the river are different, and the reoxygenation water levels of the reoxygenation insertion tubes 41 are correspondingly arranged with the water level heights of the corresponding dissolved oxygen sensing units.

[0027] The reoxygenation unit 4 is connected with a microporous aeration disc 54, which is used for reoxygenation operation at different water levels in the river.

[0028] Specifically, the reoxygenation device 5 comprises an intelligent control box 51, a main control unit 52 is built-in the intelligent control box 51, and the main control unit 52 is connected with the cloud control platform 3 to receive control instruction signals, the intelligent control box 51 is respectively connected with a jet aerator 53, a micro-porous aerator disc 54 and a spiral aerator 55, the jet aerator 53 extends to the high water level position of the river channel through a first aeration pipe, the micro-porous aerator disc 54 is connected with the reoxygenation guide pipe 42 through a second aeration pipe, and ultrasonic oscillators are arranged in the first aeration pipe and the second aeration pipe, and the spiral aerator 55 is arranged at the low water level position of the river channel in a telescopic and adjustable manner.

[0029] The jet aerator 53 is used for reoxygenation operation on the river basin on both sides of the river channel, and the spiral aerator 55 is used for disturbing the bottom mud to prevent the deposition of pollutants.

[0030] More specifically, the anchoring mechanism 6 comprises a fixed anchor base 61 arranged at the edge of the river channel, the fixed anchor base 61 is connected with the floating detection platform 1 through an anchor rod 62 arranged at the bottom of the river channel, a plurality of positioning anchor claws 63 are equidistantly arranged at the bottom of the anchor rod 62, the end of the anchor rod 62 is connected with the floating detection platform 1 through a positioning rope 64, and a cable winch 65 is arranged at one side of the fixed anchor base 61 and connected with the floating detection platform 1 through a traction cable 66.

[0031] The anchor rod 62 is combined with the positioning anchor claw 63, the fixed anchor base 61 is cooperated with the cable winch 65, so that the floating detection platform 1 is stably anchored in the complex riverbed, displacement caused by water flow impact is prevented, and self-adaptive adjustment during water level change is supported.

[0032] An intelligent control method of a reoxygenation device for black and odorous river channel treatment, the method comprises the following steps: S1, collecting environmental data in the river channel; S2, formulating a reoxygenation control strategy; S3, adjusting the reoxygenation water level layer and the reoxygenation amount according to the reoxygenation strategy and the collected environmental data; S4, dynamically optimizing the reoxygenation control logic.

[0033] In step S1, the types of the collected environmental data in the river channel include dissolved oxygen concentration, temperature and ammonia nitrogen concentration, the above data are collected by the detection unit 22 at regular intervals and transmitted to the data recording unit 15, the data recording unit 15 remotely transmits the data to the cloud control platform 3, and the cloud control platform 3 marks the collection time of the received data and periodically summarizes.

[0034] In step S1, the reoxygenation control strategy comprises a control target and a reoxygenation control strategy, and the control target comprises: oxygen deficit coefficient OD control target: Surface water level OD≥3mg / L, middle water level 2.5mg / L≥OD≥2.0mg / L, bottom water level OD≥1.5mg / L; Maximum aeration intensity: jet aerator 538m³ / h, micro-porous aerator 545m³ / h; Reoxygenation control strategy: When DO<1.5mg / L, start jet aerator 53 full power operation; When DO reaches 2mg / L, switch to micro-porous aeration + intermittent mode, work / rest time ratio = 1:2; If ammonia nitrogen concentration > 2mg / L, extend aeration cycle to work / rest ratio = 2:1, strengthen nitrification reaction.

[0035] Step S3 specifically includes the following steps: S31, monitor the dissolved oxygen concentration, temperature and ammonia nitrogen concentration of the current position of the deep water level, middle water level and upper water level respectively through the detection unit 22; S32, upload the monitoring data to the cloud control platform 3, and the cloud control platform 3 compares the monitored data with the control target parameters; S33, according to the data comparison result, send reoxygenation instruction to the intelligent control box 51; S34, jet aerator 53, micro-porous aerator 54 and spiral aerator 55 start reoxygenation operation according to the reoxygenation instruction respectively at the water level position that needs to be reset; In step S5, the reoxygenation control logic trains the LSTM neural network model based on the historical data recorded by the cloud control platform 3, predicts the DO change trend in the future for several hours, adjusts the aeration strategy in advance and adopts intermittent aeration optimization algorithm for reoxygenation control: intermittent aeration optimization algorithm includes the following steps: S51, calculate the oxygen deficit coefficient according to the real-time DO value, OD=DO_sat-DO_actual; S52, dynamically adjust the aeration cycle T_cycle, T_cycle=T_base×(1+e^(-k×OD)); Wherein T_base is the base cycle 30 minutes, k is the attenuation coefficient 0.5; Example: when the oxygen deficit coefficient OD=2mg / L, T_cycle≈30×(1+0.368)=41 minutes, wherein the aeration time T_on=14 minutes, the rest time T_off=27 minutes.

[0036] S53, in the aeration stage T_on, the power ratio of jet aerator 53 and micro-porous aerator 54 is allocated according to the following formula: P_jet=100%×(1-DO_actual / DO_target), P_micro=100%-P_jet.

[0037] For example: current DO = 1.8 mg / L (target DO = 2.5 mg / L), then the jet aerator 53 power ratio: P_jet = 100% x (1-1.8 / 2.5) = 28%, P_micro = 72%. Embodiment

[0038] Scenario parameters: River length: 2 km, average water depth 1.5 m, daily flow variation 0.5-2.0 m³ / s; Initial water quality: DO = 0.8 mg / L (bottom layer), ammonia nitrogen = 4.5 mg / L.

[0039] Deployment scheme: One set of floating detection platform is arranged every 200 meters, a total of 10 sets; Jet / micro-porous aerators are deployed in staggered positions (alternately installed on both sides of the river); The anchoring system uses a combination of double anchor rods and winches (flood resistance speed setting 3 m / s).

[0040] Operation results:

[0041] The method uses hierarchical target detection reoxygenation and dynamic regulation of the reoxygenation device 5, dynamically adjusts the aeration mode based on the dissolved oxygen control target of different water layers, accurately matches the nitrification reaction demand, improves the denitrification efficiency, and the actual measured ammonia nitrogen removal rate is > 90%. Secondly, through the intermittent aeration algorithm, i.e. the dynamic adjustment of the working / rest time ratio, the invalid aeration time is reduced, and the comprehensive energy saving rate is more than 40%.

[0042] Finally, the LSTM model is trained through historical data to predict the future dissolved oxygen trend, and the aeration strategy is adjusted in advance to avoid control hysteresis; the intermittent aeration cycle formula is dynamically optimized according to the oxygen deficit coefficient, balancing the oxygenation speed and energy consumption. Automatically allocate jet and micro-porous aerator power to ensure that high DO areas reduce aeration intensity and low DO areas concentrate oxygen supply, thereby achieving dynamic balance and energy saving purposes.

[0043] In summary, the principle of the embodiment is to dynamically position the floating detection platform 1 in the river through the anchoring mechanism 6, monitor the water quality environment at different water levels using the detection unit 22 arranged on the floating detection platform 1 and transmit it to the cloud control platform 3, and the cloud control platform 3 controls the reoxygenation device 5 to perform reoxygenation operation on the corresponding water level. Detection-reoxygenation one-to-one correspondence, accurate inhibition of anaerobic reaction in the bottom layer, secondly, through the intermittent aeration method, the power of the reoxygenation device 5 is dynamically allocated to realize concentrated oxygen supply in high oxygen deficit areas and energy saving operation in low oxygen deficit areas; finally, through the LSTM model, water quality deterioration is predicted in advance to reduce the probability of sudden black and odorous events.

[0044] The specific embodiments described herein represent merely the best practices pursuant to the instant application. Those of ordinary skill in the art can make various modifications or additions or employ similar forms without departing from the spirit of the instant application or exceeding the scope of the claims appended hereto.

[0045] Although the terms floating detection platform 1, floating platform 11, telescopic limiting connecting rod 12, waterproof sealing frame 13, loading cavity 14, data recording unit 15, data transmission module 16, water quality data acquisition mechanism 2, telescopic adjusting rod 21, detection unit 22, cloud control platform 3, oxygenation unit 4, oxygenation cannula 41, oxygenation catheter 42, wire passing marker buoy 43, oxygenation device 5, intelligent control box 51, main control unit 52, jet aerator 53, microporous aerator disc 54, spiral aerator 55, anchoring mechanism 6, fixed anchor base 61, anchor rod 62, positioning anchor claw 63, positioning rope 64, cable winch 65, traction cable 66, etc. are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the instant application; any interpretation of them as an additional limitation is contrary to the spirit of the instant application.

Claims

1. A reoxygenation device for treating black and odorous rivers, comprising a floating detection platform (1), characterized in that, The floating detection platform (1) is equipped with a water quality data acquisition mechanism (2), which is remotely connected to a cloud control platform (3). The floating detection platform (1) is also equipped with a reoxygenation unit (4), which is connected to a reoxygenation device (5) that is offset on both sides of the river. The floating detection platform (1) is positioned on both sides of the river by an anchoring mechanism (6).

2. The reoxygenation device for treating black and odorous rivers according to claim 1, characterized in that, The floating detection platform (1) includes at least three sets of floating platforms (11) connected in pairs. The floating platforms (11) are connected by telescopic limiting rods (12). The floating platforms (11) are provided with waterproof sealing frames (13) around their perimeter. The upper end of the floating platforms (11) is provided with line marking floats (43). The floating platforms (11) have loading cavities (14). The loading cavities (14) are provided with data recording units (15). The data recording units (15) are connected to the cloud control platform (3) through the data transmission module (16) and perform monitoring data transmission.

3. The reoxygenation device for treating black and odorous rivers according to claim 2, characterized in that, The water quality data acquisition mechanism (2) includes a telescopic adjustment rod (21) set on a waterproof sealing frame (13) and extending towards the bottom of the river. A detection unit (22) is set at the bottom of the telescopic adjustment rod (21). The detection unit (22) includes a dissolved oxygen sensor, a temperature sensor and an ammonia nitrogen concentration sensor. A self-cleaning brush is integrated on the detection unit (22). The detection unit (22) is connected to the data recording unit (15) set in the loading cavity (14) through a transmission cable set in the telescopic adjustment rod (21).

4. The reoxygenation device for treating black and odorous rivers according to claim 3, characterized in that, The reoxygenation unit (4) includes a reoxygenation tube (41) set on a waterproof sealing frame (13). The reoxygenation tube (41) is connected to the reoxygenation device (5) through a reoxygenation conduit (42). The reoxygenation conduit (42) is inserted into a line marker float (43), and a solar panel (44) is embedded on the upper wall of the reoxygenation conduit (42). The solar panel (44) is connected to a battery through an inverter. The data transmission module (16) and the data recording unit (15) are powered by the battery. The telescopic adjustment rods (21) at the bottom of the same set of floating platforms (11) have different lengths, which are respectively divided into deep water level height, middle water level height and upper water level height. The reoxygenation water level of the reoxygenation tube (41) is set to correspond to the water level height of its corresponding dissolved oxygen sensing unit.

5. A reoxygenation device for treating black and odorous rivers according to claim 4, characterized in that, The reoxygenation device (5) includes an intelligent control box (51), which has a built-in main control unit (52) and is connected to a cloud control platform (3) to receive control command signals. The intelligent control box (51) is connected to a jet aerator (53), a microporous aeration disc (54), and a spiral aerator (55). The jet aerator (53) extends to the high water level position of the river through the first aeration pipe. The microporous aeration disc (54) is connected to the reoxygenation conduit (42) through the second aeration pipe. Both the first and second aeration pipes are equipped with ultrasonic oscillators. The spiral aerator (55) is telescopically adjustable and located at the low water level position of the river.

6. A reoxygenation device for treating black and odorous rivers according to claim 2, characterized in that, The anchoring mechanism (6) includes a fixed anchor (61) set at the edge of the river channel. The fixed anchor (61) is connected to the floating detection platform (1) by an anchor rod (62) set at the bottom of the river channel. The bottom of the anchor rod (62) is provided with a number of positioning anchor claws (63) at equal intervals and positioned at the bottom of the riverbed. The end of the anchor rod (62) is connected to the floating detection platform (1) by a positioning rope (64). A cable winch (65) is provided on one side of the fixed anchor (61). The cable winch (65) is connected to the floating detection platform (1) by a traction cable (66).

7. An intelligent control method applicable to the reoxygenation device (5) according to claims 1-6, characterized in that, This method includes the following steps: S1. Riverbed environmental data collection; S2. Develop a reoxygenation control strategy; S3. Adjust the reoxygenation water level and reoxygenation amount according to the reoxygenation strategy and the collected environmental data; S4. Dynamically optimize reoxygenation control logic.

8. The intelligent control method for a reoxygenation device (5) according to claim 7, characterized in that, In step S1, the types of environmental data collected in the river channel include dissolved oxygen concentration, temperature and ammonia nitrogen concentration. The above data are collected periodically by the detection unit (22) and transmitted to the data recording unit (15). The data recording unit (15) remotely transmits the data to the cloud control platform (3). The cloud control platform (3) marks the collection time of the received data and performs periodic summaries.

9. The intelligent control method for a reoxygenation device (5) according to claim 7, characterized in that, In step S1, the reoxygenation control strategy includes a control objective and a reoxygenation control strategy, wherein the control objective includes: Oxygen deficit coefficient OD control target: Surface water level OD≥3mg / L, middle water level 2.5mg / L≥OD≥2.0mg / L, bottom water level OD≥1.5mg / L; Maximum aeration intensity: jet aerator (53) 8 m³ / h, microporous aeration disc (54) 5 m³ / h; Reoxygenation control strategy: When DO < 1.5 mg / L, start the jet aerator (53) at full power; Once the DO reaches 2 mg / L, switch to microporous aeration + intermittent mode, with a working / stopping time ratio of 1:2; If the ammonia nitrogen concentration is >2 mg / L, extend the aeration cycle to a working / stopping ratio of 2:1 to enhance the nitrification reaction.

10. The intelligent control method for a reoxygenation device (5) according to claim 9, characterized in that, Step S3 specifically includes the following steps: S31. The dissolved oxygen concentration, temperature and ammonia nitrogen concentration at the current location are monitored by the detection unit (22) for the deep water level, middle water level and upper water level respectively. S32. Upload the monitoring data to the cloud control platform (3). The cloud control platform (3) compares the monitored data with the control target parameters. S33. Based on the data comparison results, send a reoxygenation command to the intelligent control box (51); S34, jet aerator (53), microporous aeration disc (54) and spiral aerator (55) are started according to the reoxygenation command to perform reoxygenation operation on the water level positions that need to be reset respectively; In step S5, the reoxygenation control logic trains an LSTM neural network model based on historical data recorded by the cloud control platform (3), predicts the DO change trend in the next few hours, adjusts the aeration strategy in advance, and uses an intermittent aeration optimization algorithm for reoxygenation control: the intermittent aeration optimization algorithm includes the following steps: S51. Calculate the oxygen deficit coefficient based on the real-time DO value, OD = DO_sat - DO_actual). S52. Dynamically adjust the aeration cycle T_cycle, T_cycle=T_base×(1+e^(-k×OD)); where T_base is the base cycle of 30 minutes and k is the decay coefficient of 0.5; S53. During the aeration stage T_on, the power ratio of the jet aerator (53) and the microporous aeration disc (54) is allocated according to the following formula: P_jet=100%×(1-DO_actual / DO_target), P_micro=100%-P_jet.

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