Reservoir phosphorus release monitoring system and monitoring method

Abstract

The present invention relates to a reservoir phosphorus release monitoring system and monitoring method. The monitoring system includes a sampling platform that can float on the water surface of the reservoir and an online monitoring station house built beside the reservoir. The online monitoring station house is provided with online monitoring equipment. A plurality of sampling pumps are connected to the sampling platform. All sampling pumps are located below the sampling platform to fall into the water body of the reservoir. All sampling pumps have a height difference in the vertical direction to perform sampling at different depths. The water outlets of all sampling pumps are respectively connected to the online monitoring equipment in the online monitoring station house through sampling pipelines to monitor water samples at different depths. The present invention is based on an above-water sampling platform as a carrier. The sampling platform is equipped with sampling pumps according to different depths. Water samples at different water depths can be transported to the online monitoring equipment for monitoring by the sampling pumps. The system has a simple structure and is convenient for real-time sampling and monitoring of different depths of the reservoir water body. The height difference between the sampling pumps can be preset in advance in combination with the actual water depth of the reservoir.

Description

Technical Field

[0001] The invention belongs to the technical field of water quality measurement and testing, and in particular relates to a reservoir phosphorus release monitoring system and a monitoring method. Background Art

[0002] Most reservoirs and lakes are built according to the terrain and have deep water. As the sediment in the river's surface runoff settles, total phosphorus also settles to the bottom of the reservoir with the sediment. It is necessary to study the release intensity of total phosphorus at the bottom of the reservoir in different seasons, water depths and temperatures, and understand the impact on water quality and changing trends.

[0003] At present, my country's water environment monitoring mainly includes monitoring at testing stations and manual sampling monitoring. Manual sampling monitoring is mainly through periodic sampling on site, which is sent back to the laboratory, and then the test personnel conduct water quality testing on the collected water samples. Manual sampling monitoring is highly flexible and has a wide range of operations. However, traditional manual sampling has the problems of long evaluation cycle, high labor intensity, long time consumption, and complex operation when sampling at a fixed depth. In addition, some water environments require boats to be driven to the sampling points for fixed sampling. Due to the diverse changes in the water environment, sampling is difficult, and the sampling process is also dangerous. The monitoring of detection stations is to establish systematic monitoring stations next to large reservoirs to conduct real-time water quality data monitoring. In the prior art, such as CN207036823U, a water environment online monitoring system is provided, which is not costly, but the sampling depth is fixed, which is not convenient for sampling and monitoring at different depths; there are also sampling and monitoring schemes disclosed in research such as CN209911820U, CN110456013A, CN109917092A, CN104535736A, etc., which are more inclined to an online sampling and monitoring method concept, which is relatively complex, and the implementation cost is estimated to be high. There is also a lack of feasible specific structural schemes, which need to be further refined for implementation. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a reservoir phosphorus release monitoring system and a monitoring method, so as to avoid the problem that the detection station of the reservoir has a complex structure and is inconvenient for sampling and monitoring at different depths, and to achieve a simple structure and convenient real-time sampling and monitoring at different depths.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The reservoir phosphorus release monitoring system comprises a sampling platform that can float on the surface of the reservoir and an online monitoring station house built beside the reservoir, wherein the online monitoring station house is provided with online monitoring equipment; a plurality of sampling pumps are connected to the sampling platform, and all the sampling pumps are located below the sampling platform so as to fall into the water body of the reservoir, and all the sampling pumps have a height difference in the vertical direction so as to perform sampling operations at different depths, and the water outlets of all the sampling pumps are respectively connected to the online monitoring equipment in the online monitoring station house through sampling pipelines so as to monitor water samples at different depths.

[0007] To further improve the above technical solution, the sampling platform is an annular floating body with a hollow middle portion, a horizontal steel pipe is horizontally arranged in the hollow middle portion of the annular floating body, and all sampling pumps are suspended and connected to the horizontal steel pipe by ropes.

[0008] Furthermore, all the sampling pumps are each connected to the horizontal steel pipe through a one-to-one rope suspension, and the connection positions of all the ropes on the horizontal steel pipe are arranged at intervals along the horizontal steel pipe.

[0009] Furthermore, the rope outer shell is provided with a PPR tube to prevent the ropes from being entangled with each other.

[0010] Furthermore, the annular floating body includes a steel frame, and the steel frame includes two rectangular frame plates, and the rectangular frame plates are composed of a square frame and a tic-tac-toe reinforcing rib connected in the square frame. The two rectangular frame plates are arranged in upper and lower layers and are parallel to each other. The intersection positions on the upper rectangular frame plate and the intersection positions on the lower rectangular frame plate are connected with each other through corresponding vertical ribs to form the steel frame; the connection points of the tic-tac-toe reinforcing ribs and the square frame are vertically connected so that the steel frame has nine rectangular arrays of square spaces, and the middle square space is formed as the central hollow, and lightweight bodies are provided in the surrounding square spaces to provide buoyancy and together form the annular floating body.

[0011] Furthermore, the upper surface of the surrounding grid space is paved with fiberglass grilles to provide a foothold for maintenance personnel.

[0012] Optionally, the sampling pipeline is a hose, the outer side of the sampling platform is provided with an electric propeller for propulsion, and the lower surface of the sampling platform is provided with a steering gear for controlling the propulsion direction; the sampling platform is also provided with a power supply and a controller and electrically connected to the sampling pump, electric propeller and steering gear.

[0013] Furthermore, the online monitoring station is provided with water tanks corresponding to the number of sampling pumps, and all sampling pumps are connected one-to-one to the corresponding water tanks through sampling pipes. The water tanks are connected with a drain pipe, an overflow pipe and a water intake pipe. The overflow pipe is higher than the drain pipe, and the drain pipe is provided with an electromagnetic valve; the online monitoring equipment is connected to the electromagnetic switching valve through a water intake monitoring main pipe, and the water intake monitoring main pipe is provided with a water intake pump. The electromagnetic switching valve is connected to the water intake pipes of all water tanks so as to select one to extract water samples from the water tank for monitoring.

[0014] Furthermore, an electric control device is provided in the online monitoring station house, and the electric control device is electrically connected to the sampling pump, the solenoid valve, the water intake pump, the solenoid switching valve and the online monitoring equipment.

[0015] The present invention also relates to a reservoir phosphorus release monitoring method. The method is based on the reservoir phosphorus release monitoring system and includes sampling and monitoring at different depths and time periods.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The reservoir phosphorus release monitoring system of the present invention is based on a sampling platform on the water as a carrier. The sampling platform is equipped with sampling pumps according to different depths. The sampling pumps transport water samples of different water depths to the online monitoring equipment in the online monitoring station for monitoring. During implementation, the sampling pump can be a submersible pump, a deep well electric pump or other pumps that can operate underwater; the sampling platform can be fixed-point sampling or floating, which has strong applicability.

[0018] 2. The reservoir phosphorus release monitoring system has a simple structure and is convenient for real-time sampling and monitoring of reservoir water at different depths. The height difference between all sampling pumps can be preset in advance based on the actual water depth of the reservoir.

[0019] 3. The monitoring method of the present invention can extend the service life of the system and ensure the effectiveness of online monitoring and supervision of water bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a reservoir phosphorus release monitoring system according to a specific embodiment;

[0021] Figure 2 is a schematic diagram of a sampling platform in a specific embodiment;

[0022] Figure 3 for Figure 2 Bottom view of

[0023] Figure 4 for Figure 3 Enlarged image of the upper middle part;

[0024] Figure 5is a schematic diagram of the internal structure of a sampling platform in a specific embodiment;

[0025] Figure 6 It is a schematic diagram of the components inside the online monitoring station in a specific embodiment;

[0026] Figure 7 for Figure 6 Middle AA section view;

[0027] Figure 8 for Figure 6 Middle BB section view;

[0028] Fig. 9 is a schematic diagram of a deformed structure of a sampling platform in a specific embodiment;

[0029] Among them, there are sampling platform 1, steel frame 11, rectangular frame plate 12, square frame 121, well-shaped reinforcing ribs 122, vertical ribs 13, grid space 14, fiberglass grille 15, lightweight body 16, horizontal steel pipe 17, middle hollow 18, sampling pump 2, rope 21, sampling pipeline 22, online monitoring station 3, online monitoring equipment 4, water intake monitoring main pipe 5, water intake pump 51, electromagnetic switching valve 52, water storage tank 6, drain pipe 61, electromagnetic valve 62, overflow pipe 63, water intake pipe 64, power supply 7, controller 71, electric propeller 72, steering gear 73, reservoir 100. DETAILED DESCRIPTION

[0030] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] See also Figure 1-3 The reservoir phosphorus release monitoring system of a specific embodiment includes a sampling platform 1 that can float on the water surface of a reservoir 100 and an online monitoring station 3 built next to the reservoir 100, wherein the online monitoring station 3 is provided with an online monitoring device 4; the sampling platform 1 is connected to a plurality of sampling pumps 2, four of which are provided in this embodiment, and all the sampling pumps 2 are located below the sampling platform 1 to fall into the water body of the reservoir, and all the sampling pumps 2 have a height difference in the vertical direction to facilitate sampling operations at different depths, and the water outlets of all the sampling pumps 2 are respectively connected to the online monitoring device 4 in the online monitoring station 3 through sampling pipes 22 to monitor water samples at different depths.

[0032] The reservoir phosphorus release monitoring system of the embodiment is based on the sampling platform 1 on the water as a carrier. The sampling platform 1 is equipped with a sampling pump 2 according to different depths. The water samples of different water depths are transported to the online monitoring equipment 4 in the online monitoring station 3 for monitoring by the sampling pump 2. During implementation, the sampling pump 2 can select a submersible pump, a deep well electric pump or other pumps that can operate underwater; the sampling platform 1 can be a fixed-point sampling or a floating form, and correspondingly, the sampling pipeline 22 can select a hard plastic pipe and a hose; when the sampling platform 1 is a fixed-point sampling, the sampling pipeline 22 can also select a hose, and all the pipe sections that can be collected by the hose can be covered with a hard outer tube to extend the service life of the hose. At the same time, the electronic control device required by the system can be set in the online monitoring station 3. When the sampling pump 2 is a wired control connection, the connecting wire can also be inserted into the hard outer tube together and extended to the sampling pump 2. The reservoir phosphorus release monitoring system has a simple structure, which is convenient for real-time sampling and monitoring of different depths of the reservoir water body. The height difference between all sampling pumps 2 can be preset in advance in combination with the actual water depth of the reservoir.

[0033] The sampling platform 1 is an annular floating body with a hollow middle portion 18 , a horizontal steel pipe 17 is horizontally arranged at the hollow middle portion 18 of the annular floating body, and all sampling pumps 2 are suspended and connected to the horizontal steel pipe 17 via ropes 21 .

[0034] In this way, the middle part bears the weight and the surrounding part provides buoyancy, which can improve the stability of the sampling platform 1 in the reservoir water body.

[0035] All the sampling pumps 2 are suspended and connected to the horizontal steel pipe 17 through one-to-one ropes 21 , and the connection positions of all the ropes 21 on the horizontal steel pipe 17 are arranged at intervals along the horizontal steel pipe 17 .

[0036] In this way, the sampling pump 2 is conveniently suspended and connected, the sampling pumps 2 are spaced further apart from each other, and the mutual influence during operation is less, which is beneficial to sampling accuracy. During implementation, a PPR tube (not shown in the figure) can be set outside the rope 21. The PPR tube is a hard tube that can prevent the ropes 21 from getting entangled with each other due to water flow.

[0037] See also Figure 4 , Figure 5The annular floating body comprises a steel frame 11, wherein the steel frame 11 comprises two rectangular frame plates 12, wherein the rectangular frame plates 12 are composed of a square frame 121 and a cross-shaped reinforcing rib 122 connected in the square frame 121, the two rectangular frame plates 12 are arranged in upper and lower layers and are parallel and directly opposite, and each intersection position on the upper rectangular frame plate 12 is connected to each intersection position on the lower rectangular frame plate 12 through corresponding vertical ribs 13 to form the steel frame 11; the connection between the cross-shaped reinforcing rib 122 and the square frame 121 is vertically connected so that the steel frame 11 has nine rectangular arrays of square spaces 14, the middle square space 14 is formed as the middle hollow 18, and the surrounding square spaces 14 are provided with a lightweight body 16 to provide buoyancy and together form the annular floating body, and the horizontal steel pipe 17 can be connected to the upper rectangular frame plate 12 or the lower rectangular frame plate 12, and in this embodiment, it is connected in the middle of the cross-shaped reinforcing rib 122 of the upper rectangular frame plate 12.

[0038] In this way, a feasible specific structure of annular floating body is provided, which is simple and convenient. The steel frame 11 can be made of steel bars or angle steels, and the connections are all welded, with reliable strength. The surrounding square space 14 is convenient for the selection and connection of the lightweight body 16. The lightweight body 16 can be a simple cylindrical floating barrel, which is low in cost and can be connected by binding.

[0039] The upper surface of the surrounding grid space 14, that is, the edge of the upper rectangular frame plate 12, is also paved with a glass fiber reinforced plastic grille 15 for maintenance personnel to stand.

[0040] In this way, it is convenient for maintenance personnel to log on to the sampling platform 1 and perform operations more conveniently.

[0041] See also Figure 6-8 , wherein the online monitoring station room 3 is provided with water tanks 6 corresponding to the number of sampling pumps 2, and all sampling pumps 2 are connected to the corresponding water tanks 6 one-to-one through sampling pipes 22 respectively, and the water tanks 6 are connected with a vent pipe 61, an overflow pipe 63 and a water intake pipe 64, and the center elevation of the overflow pipe 63 is higher than the vent pipe 61, and the vent pipe 61 is provided with a solenoid valve 62; the online monitoring equipment 4 is connected to the solenoid switching valve 52 through the water intake monitoring main pipe 5, and the water intake monitoring main pipe 5 is provided with a water intake pump 51, and the solenoid switching valve 52 is connected to the water intake pipes 64 of all water tanks 6 so as to select one to extract water samples from the water tank 6 for monitoring.

[0042] In this way, the water sample is first collected into the water storage tank 6 by the sampling pump 2, and the online monitoring device 4 then performs water pumping detection accordingly, which can ensure the stability of the water sample and water volume during monitoring and help improve the monitoring accuracy.

[0043] Among them, an electric control device (not shown in the figure) is provided in the online monitoring station room 3, and the electric control device is electrically connected to the sampling pump 2, the solenoid valve 62, the water intake pump 51, the solenoid switching valve 52 and the online monitoring equipment 4 to implement corresponding power supply and control, which is the existing technology and will not be repeated; the online monitoring equipment 4 is also electrically connected to a communication device to wirelessly transmit the monitoring data to a designated computer and mobile phone APP to facilitate monitoring.

[0044] The present invention also provides a reservoir phosphorus release monitoring method, which is based on the above reservoir phosphorus release monitoring system and includes sampling and monitoring at different depths in different time periods every day. For example, the following control operations are cycled daily:

[0045] At 08:00, the sampling pump A is turned on through the electronic control device, and the sampling pump A pumps the water sample into the water storage tank A. The sampling pump A controls the running time of the sampling pump through time. After the water sample in the water storage tank A is full, it overflows into the external ditch or water body between the equipment outside the factory through the overflow pipe 63 on the water storage tank; the water intake pump 51 of the online monitoring device 4 is turned on through the electronic control device, and the electromagnetic switching valve 52 switches to extract and monitor the water sample in the water storage tank A. The remaining water sample in the water storage tank A is emptied through the matching vent pipe 61, and the monitoring data of the online monitoring device 4 is transmitted to the designated computer and mobile phone APP through the wireless communication device.

[0046] At 12:00, the sampling pump B is turned on through the electronic control device, and the sampling pump B pumps the water sample into the water storage tank B. The sampling pump B controls the running time of the sampling pump through time. After the water sample in the water storage tank B is full, it overflows into the external ditch or water body between the equipment outside the factory through the overflow pipe 63 on the water storage tank; the water intake pump 51 of the online monitoring equipment 4 is turned on through the electronic control device, and the electromagnetic switching valve 52 switches to extract and monitor the water sample in the water storage tank B. The remaining water sample in the water storage tank B is emptied through the matching vent pipe 61, and the monitoring data of the online monitoring equipment 4 is transmitted to the designated computer and mobile phone APP through the wireless communication device.

[0047] At 16:00, the sampling pump C is turned on through the electronic control device, and the sampling pump C pumps the water sample into the water storage tank C. The sampling pump C controls the running time of the sampling pump through time. After the water sample in the water storage tank C is full, it overflows into the external ditch or water body between the equipment outside the factory through the overflow pipe 63 on the water storage tank; the water intake pump 51 of the online monitoring equipment 4 is turned on through the electronic control device, and the electromagnetic switching valve 52 switches to extract and monitor the water sample in the water storage tank C. The remaining water sample in the water storage tank C is emptied through the matching vent pipe 61, and the monitoring data of the online monitoring equipment 4 is transmitted to the designated computer and mobile phone APP through the wireless communication device.

[0048] At 20:00, the sampling pump D is turned on through the electronic control device, and the sampling pump D pumps the water sample into the water storage tank D. The sampling pump D controls the running time of the sampling pump through time. After the water sample in the water storage tank D is full, it overflows into the external ditch or water body between the equipment outside the factory through the overflow pipe 63 on the water storage tank; the water intake pump 51 of the online monitoring device 4 is turned on through the electronic control device, and the electromagnetic switching valve 52 switches to extract and monitor the water sample in the water storage tank D. The remaining water sample in the water storage tank D is emptied through the matching vent pipe 61, and the monitoring data of the online monitoring device 4 is transmitted to the designated computer and mobile phone APP through the wireless communication device.

[0049] In this way, the service life of the system can be extended and online monitoring and supervision of the water body can be guaranteed.

[0050] See also Fig. 9 During implementation, further, the sampling platform 1 can be in a floating form. Since it needs to be moved, the sampling pipeline 22 is a hose. The outer side of the sampling platform 1 is provided with an electric propeller 72 for propulsion, and the lower surface of the sampling platform 1 is provided with a steering gear 73 for controlling the propulsion direction; the sampling platform 1 is also provided with a power supply 7 and a controller 71 and is electrically connected to the sampling pump 2, the electric propeller 72 (motor) and the steering gear 73. The controller 71 is wirelessly connected to the electric control device in the online monitoring station room 3 through a communication module.

[0051] In this way, the sampling platform 1 can be moved within a certain range to improve applicability.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A reservoir phosphorus release monitoring system, comprising a sampling platform that can float on the surface of the reservoir and an online monitoring station house built beside the reservoir, wherein the online monitoring station house is provided with online monitoring equipment; the characteristics are: The sampling platform is connected to a plurality of sampling pumps, all of which are located below the sampling platform to fall into the water body of the reservoir, and all of the sampling pumps have a height difference in the vertical direction to facilitate sampling operations at different depths, and the water outlets of all of the sampling pumps are connected to the online monitoring equipment in the online monitoring station through sampling pipelines to monitor water samples at different depths; The sampling platform is a hollowed-out annular floating body, a horizontal steel pipe is horizontally arranged at the hollowed-out position in the middle of the annular floating body, and all sampling pumps are suspended and connected to the horizontal steel pipe by ropes; All sampling pumps are suspended and connected to the horizontal steel pipe through one-to-one ropes, and the connection positions of all ropes on the horizontal steel pipe are arranged at intervals along the horizontal steel pipe; The annular floating body includes a steel frame, and the steel frame includes two rectangular frame plates, the rectangular frame plates are composed of a square frame and a cross-shaped reinforcing rib connected in the square frame, the two rectangular frame plates are arranged in upper and lower layers and are parallel and directly opposite, and each intersection position on the upper rectangular frame plate and each intersection position on the lower rectangular frame plate are connected by corresponding vertical ribs to form the steel frame; The connection points of the tic-tac-toe reinforcing ribs and the square frame are vertically connected so that the steel frame has nine rectangular arrays of square spaces, the middle square space forms the central hollow, and the surrounding square spaces are provided with lightweight bodies to provide buoyancy and together form the annular floating body; The upper surface of the surrounding grid space is also paved with fiberglass grilles for maintenance personnel to stand.

2. The reservoir phosphorus release monitoring system according to claim 1, characterized in that: The rope outer shell is provided with a PPR tube to prevent the ropes from getting entangled with each other.

3. The reservoir phosphorus release monitoring system according to claim 1, characterized in that: The sampling pipeline is a hose, the outer side of the sampling platform is provided with an electric propeller for propulsion, and the lower surface of the sampling platform is provided with a steering gear for controlling the propulsion direction; the sampling platform is also provided with a power supply and a controller and is electrically connected to the sampling pump, electric propeller and steering gear.

4. The reservoir phosphorus release monitoring system according to claim 1, characterized in that: The online monitoring station is provided with water tanks corresponding to the number of sampling pumps, and all sampling pumps are connected to the corresponding water tanks one by one through sampling pipes. The water tanks are connected with a vent pipe, an overflow pipe and a water intake pipe. The overflow pipe is higher than the vent pipe, and a solenoid valve is provided on the vent pipe. The online monitoring device is connected to the electromagnetic switching valve through a water intake monitoring main pipe, and a water intake pump is provided on the water intake monitoring main pipe. The electromagnetic switching valve is connected to the water intake pipes of all water storage tanks so as to select a water sample from the water storage tank for monitoring.

5. The reservoir phosphorus release monitoring system according to claim 4, characterized in that: An electric control device is arranged in the online monitoring station house, and the electric control device is electrically connected to the sampling pump, the electromagnetic valve, the water intake pump, the electromagnetic switching valve and the online monitoring equipment.

6. A method for monitoring phosphorus release in a reservoir, characterized in that: The method is carried out based on the reservoir phosphorus release monitoring system according to any one of claims 1 to 5, and includes sampling and monitoring at different depths and time periods.

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