Intelligent system for enhancing ecological stability of near-outlet river channel by coupling storage, purification and utilization

Abstract

The invention is a kind of coupling storage, purification, and use of the wisdom system suitable for enhancing the ecological stability of the near outlet river, which sequentially passes through the water level warning energy dissipation system, the instantaneous water storage and purification system, and finally enters the intelligent water ecological restoration system. The water level warning energy dissipation system detects the liquid level difference before and after the outlet weir gate by using a liquid level sensor, and the data is inverted to the ground control center to determine the opening and closing of the transformed outlet weir gate. Then the water enters the instantaneous water storage and purification system, which is a solid-liquid separation well (channel) and clarification intermediate well (channel) structure. The water is stored and purified, and finally enters the intelligent ecological restoration system that enhances the plant's resistance to water disturbance. The overall increased construction module of the invention is relatively simple. Compared with the restored ecological system, the addition of warning, energy dissipation, water storage, and water purification links can better achieve the long-term stability of the water ecological system, directly saving 40% of the later operation cost. At the same time, using the solar energy intelligent control system, the overall patent is economically reasonable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of river ecological management, in particular to a wisdom system for coupling storage, purification and use to enhance the ecological stability of a river near a discharge outlet. BACKGROUND

[0002] The basic idea of comprehensive water environment improvement is to base on the current situation of the problem river basin, and to realize the complete elimination of black and odorous water bodies through the processes of intercepting pollution, controlling non-point source pollution, upgrading and reconstructing factories and networks, ecological restoration of natural rivers and lakes, and recycling water resources. However, eliminating black and odorous water bodies is only the first step of comprehensive water environment improvement, and the ultimate goal of comprehensive water environment improvement is to build a healthy ecological system of rivers and lakes and finally to transform black and odorous water environment into a clear water ecological system.

[0003] Currently, the problem of black and odorous rivers has been basically eliminated in urban river basins, and in order to maintain water ecological health in the long term, there are a large number of discharge outlet river ecological restoration projects that have been repaired and supported by factories and networks. Since the combined effect of sediment dredging and ecological floating island can effectively control endogenous pollution, the combined measures of sediment dredging and ecological floating bed are more commonly used in current restored river projects. After the above-mentioned comprehensive reconstruction of the river, the river can basically present a clear and clean water body, lush aquatic plants, and fish swimming in the shallow bottom under the condition of no large flow fluctuation. However, due to the functions of flood discharge and cycle water diversion, the near-discharge outlet urban river cannot guarantee the ecological restoration of the habitat, and the disturbance of the restored river and lake sediment environment, aquatic plant growth state and water surface landscape caused by strong water level fluctuation and flood discharge impact. Therefore, the present application provides an intelligent water level warning auxiliary discharge outlet energy dissipation, and appropriately increases the water storage device to improve the ecological stability of the near-discharge outlet river by intelligent control, so as to ensure the stable and healthy development of the overall river basin. SUMMARY

[0004] The wisdom system for coupling storage, purification and use to enhance the ecological stability of a river near a discharge outlet can at least solve one of the above technical problems.

[0005] To achieve the above object, the present application adopts the following technical scheme:

[0006] A wisdom system for coupling storage, purification and use to enhance the ecological stability of a river near a discharge outlet, comprising a water level warning energy dissipation system, a transient water storage and purification system, and a wisdom water ecological restoration system in sequence, comprising the following contents:

[0007] The water level early warning energy dissipation system of the present application is installed with a liquid level sensor in front of a river outlet, the outlet adopts a hydraulic under-opening gate, the opening and closing of the gate is linked to an on-ground control center by a front and back liquid level difference, and is completed by data inversion control, and the whole forms a buffer energy dissipation when the water level rises during flood discharge, the early warning system alarms, and the under-opening gate rises to play a role of buffering during initial drainage; the rear section of the hydraulic under-opening gate is provided with a matching river buffer slope according to local conditions, and the specific requirements follow: the single-stage drop height in plain areas is not more than 0.3 m, and the single-stage drop in hilly areas is determined according to the actual topography and geomorphology. That is, when the outlet has a flood discharge demand, the hydraulic under-opening gate is fully opened, at which time the river buffer slope plays a role of slowing down the flow velocity of the outlet, and this part is the water level early warning energy dissipation system.

[0008] The instantaneous water storage and purification system can further play a role of water energy dissipation (speed reduction), and the specific design parameters of the solid-liquid separation well (channel) contained therein are as follows:

[0009] Liquid surface load 6.0-12 m 3 / m 2 ·h;

[0010] The cross-sectional area of the solid-liquid separation well (channel) is limited to wherein V min -V max is the inclined plate rising flow rate, i.e. 0.4 mm / s-0.6 mm / s;

[0011] The reconstruction condition of the depth h of the solid-liquid separation well is limited to h≥H 标 +1.0 m, wherein H 标 is the standard height of the municipal water collection well;

[0012] The inclined plate sedimentation structure is provided in the solid-liquid separation well, the length of the inclined plate (tube) is 0.8-1.0 m, the inclination is 50°-60°, the interval between the inclined plates is 80 mm-100 mm, and a sludge settling chamber with an inclination of 50° or 55° is provided at the bottom;

[0013] The difference between the solid-liquid separation well and the solid-liquid separation channel is determined according to the level of the outlet connected river, when the width of the outlet connected river is not more than 4 m, the solid-liquid separation channel is provided, and when the width of the outlet connected river is more than 4 m, the solid-liquid separation well is provided, the reason is that when the width of the river is less than 4 m, it is more convenient to construct the channel, sufficient water can be stored while the flow velocity is slowed down, and sufficient water source is stored for the maintenance of the subsequent water ecological system; but when the width of the river is more than 4 m, although the water storage effect of the solid-liquid separation well is not obvious, it still has the effects of slowing down the flow velocity and effectively maintaining the plant root system of the subsequent ecological system, such as heat preservation, dosing, sterilization, etc.

[0014] The solid-liquid separation well (channel) is the instantaneous water storage and purification system described in the patent, which has the effect of secondary energy dissipation (speed reduction) on the water flowing through the overflow weir, and the overflow water outlet enters the clarification intermediate well (channel), which can store water for a short time (within 15 minutes) and reduce the water flow rate. The solid-liquid separation well (channel) mentioned here can filter and separate the large particles in the water through the inclined plate (pipe) arranged in the well (channel), and the bottom sludge settling chamber is connected to the water pumping pipeline controlled by a movable submersible pump on the ground, which can regularly clean the settled sludge and also serve as a reserve water source for the restored ecological system.

[0015] The solid-liquid separation well (channel) is the instantaneous water storage and purification system described in the patent, which has the effect of secondary energy dissipation (speed reduction) on the water flowing through the overflow weir, and the overflow water outlet enters the clarification intermediate well (channel), which can store water for a short time (within 15 minutes) and reduce the water flow rate. The solid-liquid separation well (channel) mentioned here can filter and separate the large particles in the water through the inclined plate (pipe) arranged in the well (channel), and the bottom sludge settling chamber is connected to the water pumping pipeline controlled by a movable submersible pump on the ground, which can regularly clean the settled sludge and also serve as a reserve water source for the restored ecological system. That is, the flowing water flows through n clear water overflow holes and then flows into the intelligent ecological restoration system.

[0016] The intelligent ecological restoration system consists of a self-adaptive ecological floating island system and a controllable submerged ecological system. The self-adaptive ecological floating island system includes a composite ecological floating island that supports emergent plants and carbon fiber biomass filler. The composite ecological floating island mainly uses soilless cultivation technology principles, with high molecular materials as carriers and substrates, to fully utilize water space niches and nutrient niches, and to establish an efficient artificial composite ecological system. In addition, the present application cooperates with carbon fiber artificial water purification technology, which weaves carbon fiber into artificial water grass form and arranges it in the water, forming a strong active functional "biofilm" with super water purification capacity. It can provide attachment or attachment conditions for various organisms, help to quickly improve water transparency, increase photosynthesis, and promote in-situ restoration of aquatic ecosystems.

[0017] The ecological floating island fixed chain in the present application is controlled by a telescopic anchor control system, which can respond to water level changes. The specific floating island carrying height can be changed up and down according to the water level parameter, preventing the restored floating island from being damaged due to excessively high or low water level. The carbon fiber biomass filler arranged below the floating island serves as a reinforcement configuration, which can maintain plant root development and protect water quality.

[0018] The submergent ecological system mainly comprises a geotechnical fiber mat in the shape of an egg tray with submergent plants, a matrix filler with a coarse-to-fine structure required for the roots of the plants attached to the top of the mat, and submergent plant species selected according to different purification rates of nitrogen and phosphorus in pollutants, mainly local dominant species, such as cattail and black algae, with a planting density controlled at 50-150 plants / m 2 The planting method can be one or a combination of several of the following methods: throwing, cutting, and sowing. The water-soluble medicament feeding pipe and the sewage (water) dual-purpose pipe are arranged below the submergent in sequence, wherein the water-soluble medicament feeding pipe has a diameter d1≥100 mm and is used for feeding nutrition (containing nitrogen, phosphorus, etc.) and bactericidal water-soluble medicament for maintaining the development of the roots of the submergent plants, and specifically, the base modification medicament feeding amount is controlled at not more than 20 g / m 2 , and the water-soluble microorganism composite bacteria building feeding amount is controlled at not more than 40 ml / m 2 The sewage (water) dual-purpose pipe has a diameter d2≥300 mm and has two main functions, one of which is to suck the sediment accumulated in the sludge settling chamber below the solid-liquid separation well (channel), and the other of which is to realize water taking from the water storage pipe to maintain and promote the development and growth of the roots of the submergent plants by adjusting the pipeline communication valve.

[0019] The formation of the water ecological system structure is slow, and the initial system is not stable enough, so remote sensing technology is needed to ensure its stable operation. The remote sensing monitoring system of the unmanned aerial vehicle carrying the infrared spectrum video camera module is used to continuously monitor each element in the entire system of the patent, analyze the internal and external factors affecting the normal operation of the ecological system, and coordinate each link of the ecological system. The unmanned aerial vehicle remote sensing monitoring system is used to obtain satellite remote sensing monitoring images to form basic parameters such as water quantity, water level, water quality, and water temperature, link the ground central control center, analyze the related results and instructions, and form the intelligent opening and closing of the hydraulic open weir gate, the self-adapting extension of the ecological floating island chain, and the intelligent feeding or water supplementing of the roots of the submergent plants.

[0020] In general, the entire system mentioned in the patent is based on periodic unmanned aerial vehicle remote sensing monitoring, which plays a warning and guarantee role in the water dissipation, water storage, and ecological operation and maintenance of the ecological system. The energy supply of the entire system is innovatively provided by solar panels, which can reasonably solve the problem of periodic damage to the repaired ecological system caused by flood discharge and water diversion, and is a low-energy-consumption and high-efficiency system.

[0021] From the above technical scheme, the coupling storage, purification and use of the intelligent system for enhancing the ecological stability of the river course near the drainage outlet can assist the drainage outlet energy dissipation with intelligent water level warning, increase the water storage device, and improve the ecological stability of the river course near the drainage outlet. It is an intelligent system for coupling warning, water storage, water purification and water use, mainly used to solve the phenomenon that the water ecological system in the river course near the drainage outlet is seriously disturbed by the fluctuating water quantity and water quality due to the flood season drainage and daily water system operation. The patent specifically provides a coupling warning, water storage, water purification and water use function coupling storage, purification and use of the intelligent system for enhancing the ecological stability of the river course near the drainage outlet, belonging to the field of water environment comprehensive treatment. The patent specifically includes three links: 1. water level warning energy dissipation system; 2. instantaneous water storage and purification system; and 3. intelligent water ecological restoration system. The whole system is equipped with intelligent infrared remote sensing monitoring and light energy power supply system, and the overall system can stabilize and strengthen the river course ecological system near the drainage outlet, and make it play a sustained and effective ecological treatment effect.

[0022] Compared with the prior art, the patent has the following effective characteristics:

[0023] 1. Precise and efficient: satellite remote sensing image has wide coverage, fast imaging speed, rich information and high cost performance. Compared with the shortcomings of traditional methods, remote sensing technology can more accurately obtain image data to be measured by setting parameters. The patent can accurately control the opening and closing of the overflow weir door through online monitoring, infrared remote sensing combined mode and data inversion to locate water quantity, water level and water quality changes, and can timely transmit signals to the next water ecological dosing system to make response measures quickly. It is a more targeted, more accurate and more effective way of treatment;

[0024] 2. Economical and reasonable: the damage to the ecological system caused by the fluctuation of the drainage outlet water quantity and water quality is large, the patent increases the module construction content, and compared with the repaired ecological system, the added energy dissipation and water outlet purification link can better realize the long-term stability of the water ecological system, and can directly save 40% of the later operation cost. At the same time, through the solar energy function intelligent control system, the overall patent modification is economically reasonable.

[0025] 3. Safe and controllable: the unmanned aerial vehicle satellite remote sensing monitoring inversion data controls the dosing system, which dynamically adjusts according to the water quality, takes into account the warning and normal regulation, and solves the problems of oxygen deficiency, root decay and lack of nutrients of submerged plant root system through pipeline dosing. The large pipeline can take out the water in the water system to solve the problem of water temperature change, and the whole system is safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of the system of the patent;

[0027] Figure 2is a process flow diagram of the embodiment of the present application;

[0028] Wherein the reference signs are:

[0029] 1. river outlet; 2. liquid level sensor; 3. river slope protection; 4. electric control cabinet; 5. hydraulic under-opening weir gate (liquid level sensor link intelligent opening and closing device); 6. weir gate; 7. solid-liquid separation well (channel); 8. water inlet; 9. sludge settling chamber; 10. flow resistance plate; 11. inclined plate (tube); 12. overflow; 13. clarified intermediate well (channel); 14. clear water overflow hole; 15. ecological floating island and its carrier; 16. carbon fiber material biomass filler; 17. ecological floating island fixing chain; 18. chain telescopic fixing anchor (the length of the chain can be intelligently adjusted according to the water level); 19. submerged plant; 20. egg holder type concave-convex geotechnical net mat; 21. multifunctional water quality online monitoring probe; 22. unmanned aerial vehicle; 23. airborne hyperspectral video camera cross block; 24. sewage (water taking) dual-purpose pipe; 25. pipe connection control valve; 26. water falling type medicament feeding pipe; 27. medicament feeding nozzle (disc type); 28. sewage pump (ground movable type); 29. integrated medicament feeding equipment; 30. anti-overflow valve; 31. ground central control center; 32. control room; 33. solar panel. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0031] The present application is a kind of coupling early warning, water storage, water purification, water use function coupling water storage, purification and use of intelligent system for enhancing the ecological stability of near-outlet river, which is suitable for river outlet flood discharge and river water diversion, to avoid the destruction of the restored ecological system caused by large fluctuations in water quantity and quality. The main method is to transform the outlet water mode, slow down the water flow rate, and increase the water storage, purification device and intermediate overflow structure to further reduce the water flow rate. The fixed method of the traditional ecological system is transformed, the carbon fiber matrix resistant to water quality disturbance is added to the ecological floating island, the submerged plant is placed on the eggshell type concave-convex geotechnical net mat resistant to water disturbance, and the water-soluble plant root system medicine injection and water retention module are assisted. Overall, it can reduce the water flow rate of the outlet river, enhance the disturbance resistance of the water ecological system of the outlet river. Finally, the system combines with unmanned aerial vehicle remote sensing monitoring technology, which can timely early warning water level, restore aquatic plants, timely harvest underwater decay plants, intelligently suck sludge sediments in sludge settling chamber, control water storage in water storage structure, etc. It is an energy-saving intelligent river water ecological disturbance resistance system.

[0032] Specifically, asFigure 1 and Figure 2 As shown in the specific implementation scheme flow of a storage, purification, and discharge coupled rainwater pipe network optimization structure is as follows:

[0033] The drainage through a near-river channel discharge outlet 1 passes through a coupling early warning, water storage, water purification, and water use function coupling storage, purification, and use, which enhances the ecological stability of the near-discharge outlet river channel. The water level early warning control energy dissipation system refers to a liquid level sensor 2 installed in front of the river channel discharge outlet. The discharge outlet uses a hydraulic under-opening weir gate 5, and the opening and closing of the weir gate is intelligently completed by the front and rear liquid level difference early warning link ground control center 4. The rear section of the hydraulic under-opening weir gate is suitably provided with a matching river channel buffer slope 3, which specifically follows the principles that the single-stage drop height in plain areas does not exceed 0.3 m, and the single-stage drop in hilly areas is determined according to the actual topography and geomorphology.

[0034] A solid-liquid separation well (channel) 7 is provided at the rear end of the river channel buffer slope. The specific design parameters of the solid-liquid separation well (channel) are as follows: the liquid surface load is 6.0-12 m 3 / m 2 ·h; the cross-sectional area is limited to where V min -V max is the inclined plate rising velocity, i.e., 0.4 mm / s-0.6 mm / s; the depth h of the solid-liquid separation well 7 is limited to h≥H 标 +1.0 m, where H 标 is the standard height of the municipal water collection well; the solid-liquid separation well 7 is internally designed with an inclined plate sedimentation structure 11, the length of the inclined plate is 0.8 or 1.0 m, the inclination angle is 50° or 55° or 60°, the interval between the inclined plates is 80 mm or 90 mm or 100 mm, and a sludge settling chamber 9 with an inclination angle of 50° or 55° is provided at the bottom;

[0035] After the design of the inclined plate (tube) 11 in the solid-liquid separation well (channel) 7, the water entering the well will be filtered and separated, achieving a "purification" effect. The sludge settling chamber 9 is connected to a water pumping pipeline 24, which can be regularly cleaned by a ground movable sewage pump 28 and can also serve as a backup source of water for the rear-end ecological system;

[0036] After the drainage passes through the solid-liquid separation well (channel) 7, it enters a clarification intermediate well (channel) 13 through an overflow port 12. The clarification intermediate well (channel) discharges water through clear water overflow holes 14 with a hole diameter After the water flows through n clear water overflow holes, it enters a self-adaptive enhanced ecological restoration system through overflow;

[0037] The impact-resistant intelligent ecological restoration system is composed of an adaptive ecological floating island system and a controllable submerged ecological system, wherein the adaptive ecological floating island system comprises an ecological floating island 15 bearing emergent plants and carbon fiber biomass fillers 16, and the floating island fixing chain can be controlled by a telescopic anchor control system 18 according to the change of water level parameters, and the optimal position of the floating island can be controlled by issuing instructions from the land control center, and the carbon fiber biomass fillers can strengthen the configuration and play a role in maintaining the plant root system of the floating island and ensuring water quality;

[0038] The submerged ecological system mainly comprises a geotextile mat 20 in the shape of an egg cup with a concave-convex shape bearing submerged plants 19, and the mat is attached with substrate fillers required by the roots from thick to thin above the mat, and a water-soluble agent adding pipe 26 and a sewage (water taking) dual-purpose pipe 24 arranged in sequence below the mat, wherein the water-soluble agent adding pipe with a diameter d1 of not less than 100 mm is used for adding nutrient (containing nitrogen, phosphorus, etc.) and bactericidal water-soluble agents for maintaining the development of the root system of the submerged plants, and the sewage (water taking) dual-purpose pipe with a diameter d2 of not less than 300 mm is used for pumping the sediment accumulated in the sedimentation chamber below the solid-liquid separation well (channel), and the water taking pipe 24 is connected with a screw pump (or a sewage pump) 28 with a lift of 6-15 m which is movable on the ground;

[0039] Finally, the application comprises a remote sensing monitoring system comprising a UAV carrying an infrared spectrum video camera module, the UAV remote sensing monitoring system carries the infrared spectrum video camera module for obtaining satellite remote sensing monitoring images, obtaining basic parameters such as water volume, water level, water quality and water temperature of the water area to be measured, and uploading the parameters to the ground central control center, obtaining corresponding results through image and data analysis and issuing instructions for associated measures, and finally forming intelligent opening and closing of the hydraulic under-type weir gate, adaptive telescoping of the ecological floating island chain, and intelligent dosing or water supplementing of the root system at the bottom of the submerged plants. The dosing pipe is connected with a ground dosing integrated device, and the water taking pipe is connected with a screw pump (or a sewage pump) with a lift range of 6-15 m which is movable on the ground.

[0040] In summary, the intelligent system of the embodiment of the application is coupled with early warning, water storage, water purification and water use functions, and is suitable for enhancing the ecological stability of near-outlet river channels, is based on periodic UAV remote sensing monitoring, plays a role in early warning and protection for water passing energy dissipation, water storage and ecological operation and maintenance of the ecological system, the energy supply of the whole system is innovatively supplied by solar panels, and the periodic damage of the restored ecological system caused by flood discharge can be reasonably solved, and the system belongs to a low-energy-consumption optimization system.

[0041] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A kind of coupling storage, purification, with applicable intelligence system of enhanced near-row river ecological stability, including sequentially through water level early warning energy dissipation system, again through instantaneous water storage, purification system, finally into intelligent water ecological restoration system, it is characterized in, The water level warning energy dissipation system is used to control the opening and closing of the open weir gate at the outlet, and plays a preliminary hydraulic energy dissipation role through instantaneous overflow. The specific process is to install a liquid level sensor in front of the river outlet, and the outlet uses a hydraulic open weir gate. The opening and closing of the weir gate is determined by the data inversion of the front and rear liquid level difference by the ground control center, and the overall forms a pipeline water level rise at the outlet during flood discharge, the warning system alarms, and the open weir gate rises to a certain height, playing a role in buffering and energy dissipation during initial drainage. The back end of the hydraulic open weir gate is provided with a matching river buffer slope, and the specific setting requirements are as follows: the single-stage drop height in plain areas does not exceed 0.3m, and the single-stage drop in hilly areas is determined according to the actual topography; when there is a flood discharge demand at the outlet, the hydraulic open weir gate is fully opened, at which time the river buffer slope plays a role in slowing down the flow rate of the outlet, and this part is the water level warning energy dissipation system. The instant water storage and purification system is a solid-liquid separation well or solid-liquid separation channel arranged at the rear end of the river buffer slope, and the specific design of the liquid surface load of the solid-liquid separation well or solid-liquid separation channel is 6.0-12 m 3 / m 2 ·h, and an inclined plate precipitation structure is arranged in the solid-liquid separation well or solid-liquid separation channel, and the cross-sectional area of the solid-liquid separation well or solid-liquid separation channel is limited to , wherein the value is the inclined plate rising flow rate, i.e. 0.4-0.6 mm / s; and the improvement limit condition of the depth h of the solid-liquid separation well or solid-liquid separation channel is h≥H 标 +1.0 m, wherein H 标 is the standard height of the municipal water collection well. The length of the inclined plate inside the solid-liquid separation well or solid-liquid separation channel is in the range of 0.8-1.0m, the inclination angle of the inclined plate is in the range of 50°-60°, the interval of the inclined plates is in the range of 80mm-100mm, and a sludge settling chamber with an inclination angle of 50° or 55° is arranged at the bottom of the well or channel. It also includes an unmanned aerial vehicle remote sensing monitoring system, which carries an infrared spectrum video camera module for obtaining satellite remote sensing monitoring images, obtaining the water volume, water level, water quality, and water temperature basic parameters of the water area to be measured. The parameters will be uploaded to the ground central control center, and the corresponding results will be obtained through image and data analysis and instructions will be issued to the associated measures.

2. The intelligent system for enhancing the ecological stability of a near-mouth river channel according to claim 1, characterized in that: The difference between the solid-liquid separation well or solid-liquid separation channel is determined by the level of the outlet connected river. When the width of the outlet converging river does not exceed 4m, a solid-liquid separation channel is arranged; when the width of the outlet converging river exceeds 4m, a solid-liquid separation well is arranged.

3. The intelligent system for enhancing the ecological stability of a near-mouth river channel according to claim 2, characterized in that: A clarification intermediate well or clarification intermediate channel is arranged behind the solid-liquid separation well or solid-liquid separation channel. The overflow water from the clarification intermediate well or clarification intermediate channel enters the intelligent ecological restoration system. After the water flows through the open weir gate for the first time, it enters the solid-liquid separation well or solid-liquid separation zone for the second time, and then enters the clarification intermediate well or clarification intermediate channel through the overflow hole for the third time. The setting of the clarification intermediate well or clarification intermediate channel is consistent with the setting principle of the solid-liquid separation well or solid-liquid separation channel. The water outlet mode of the clarification intermediate well or clarification intermediate channel is designed as a clear water overflow hole with a hole diameter φ≥100mm. After the water flows through n clear water overflow holes, it overflows into the intelligent ecological restoration system.

4. The intelligent system for enhancing the ecological stability of the near-mouth river channel according to claim 3, characterized in that: The intelligent ecological restoration system consists of two parts, namely the self-adaptive ecological floating island system and the controllable submerged ecological system. The self-adaptive ecological floating island system includes: an ecological floating island carrying emergent plants, carbon fiber biomass filler, and a floating island fixed chain telescopic anchor control system. The fixed chain connected to the floating island can realize the effect of telescopic anchor control of its length, and the telescopic anchor can respond to water level changes and remote sensing inversion parameters to realize the self-adaptive up and down change of the carrying height of the floating island. The carbon fiber biomass filler arranged below the floating island can maintain the development of plant roots and protect water quality.

5. The intelligent system for enhancing the ecological stability of the near-mouth river channel according to claim 4, characterized in that: The submersed ecological system mainly comprises a geotextile mat in the shape of an egg tray with submersed plants, a matrix filler with a rough to fine texture required by the roots of the plants attached to the mat, and a water-soluble agent feeding pipe and a sewage draining and water taking pipe arranged in sequence under the mat. The water-soluble agent feeding pipe has a diameter d1 of greater than or equal to 100 mm and is used to add water-soluble agents for maintaining and relieving the development of the roots of the submersed plants. The sewage draining and water taking pipe has a diameter d2 of greater than or equal to 300 mm and has two main functions, one of which is to suck the sediment accumulated in the sludge settling chamber under the solid-liquid separation well or solid-liquid separation channel, and the other of which is to take water from the water storage pipe for maintaining and promoting the development and growth of the roots of the submersed plants by adjusting the pipeline communication valve.

6. The intelligent system for enhancing the ecological stability of the near-mouth river channel according to claim 5, characterized in that: The feeding pipe is connected to a ground feeding integrated device, and the water taking pipe is connected to a ground movable screw pump or submersible pump with a lift range of 6-15 m.

7. The intelligent system for enhancing the ecological stability of a near-mouth river channel according to claim 6, characterized in that: The submerged plant species are selected according to the purification rates of nitrogen and phosphorus in the pollutants, and the native dominant species are mainly selected, including Vallisneria and Hydrilla verticillata, and the planting density is controlled to be 50-150 plants / m 2 , and the planting mode is one or a combination of the throwing planting method, the cutting method and the seeding method.

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