Drinking water source pollutant risk screening system and method

Abstract

The invention discloses a drinking water source pollutant risk screening system and method in the technical field of water source pollutant risk screening. The drinking water source pollutant risk screening system comprises a drinking water source pollutant monitoring data module, a drinking water pollutant health reference module, a pollutant removal efficiency evaluation module and a risk evaluation module. The drinking water source pollutant monitoring data module realizes comprehensive collection of various pollutant monitoring data of one or more water sources, and the system can accurately calculate the risk value of each pollutant through the risk assessment module through the drinking water pollutant health reference module and the pollutant removal efficiency assessment module. Therefore, an accurate pollutant sorting list is generated, and accurate identification and grading of pollutants are realized.

Description

Technical Field

[0001] This invention relates to the field of risk screening for pollutants in water sources, and specifically to a system and method for risk screening of pollutants in drinking water sources. Background Technology

[0002] Risk screening of pollutants in drinking water sources provides environmental management departments with clear regulatory priorities and decision-making basis, ensuring drinking water safety and public health. However, some existing drinking water source pollutant risk screening systems still have significant limitations: On the one hand, it is impossible to collect monitoring data on water pollutants in the monitored area from multiple perspectives, and it is also impossible to effectively supervise the water pollution situation in the monitored area. On the other hand, these systems mostly rely on traditional methods of collecting water samples from drones equipped with sampling structures (such as sampling bottles) for laboratory analysis to obtain pollutant data. However, the sampling structures are prone to surface damage due to collisions and other factors in complex aquatic environments, leading to sample leakage during transportation to the laboratory. This fails to meet the requirements for sample integrity and accuracy in subsequent analysis, ultimately affecting the accuracy of risk screening results. To address this, we propose a risk screening system and method for pollutants in drinking water sources. Summary of the Invention

[0003] The purpose of this invention is to provide a risk screening system and method for pollutants in drinking water sources, which solves the technical problem that some existing risk screening systems for pollutants in drinking water sources cannot collect monitoring data on water pollutants in the monitored area from multiple perspectives, nor can they effectively supervise the water pollution situation in the monitored area.

[0004] The present invention achieves the above objectives through the following technical solutions: A drinking water source pollutant risk screening system includes: a drinking water source pollutant monitoring data module, a drinking water pollutant health benchmark module, a pollutant removal efficiency assessment module, and a risk assessment module; Among them, the drinking water source pollutant monitoring data module is used to acquire water body monitoring data of multiple pollutants in one or more drinking water sources and send the water body monitoring data to the risk assessment module; The drinking water pollutant health benchmark module is used to obtain drinking water health benchmark data for corresponding pollutants from the drinking water source pollutant monitoring data module, and send the drinking water health benchmark data to the risk assessment module. The pollutant removal efficiency assessment module is used to obtain the removal efficiency data of the corresponding pollutants in drinking water treatment and send the removal efficiency data to the risk assessment module. The risk assessment module is used to receive the water body monitoring data, drinking water health benchmark data and removal efficiency data, calculate the risk value of each pollutant, and generate a sorted list based on the risk value.

[0005] A further improvement is that the drinking water source pollutant monitoring data module includes a data acquisition unit and a data transmission unit. The data acquisition unit is used to collect water bodies in one or more drinking water sources and analyze the water bodies to obtain water body monitoring data of pollutants. The data transmission unit is used to send the water body monitoring data to the risk assessment module.

[0006] A further improvement is that the data acquisition unit includes a carrier and a sampling mechanism disposed on the carrier; The sampling mechanism includes a cylinder, a telescopic device 1 mounted on the carrier for driving the cylinder to move up and down, a piston movably mounted inside the cylinder, a telescopic device 2 mounted inside the cylinder for driving the piston to move along the cylinder axis, a sampling tube located at the bottom of the cylinder and communicating with the inner cavity of the cylinder, and a detection part and a leak-proof part mounted on the cylinder. The detection part is used to detect whether the outer wall of the cylinder is damaged, and controls the leak-proof part to work when damage to the outer wall of the cylinder is detected.

[0007] A further improvement is that the detection unit includes an annular cavity formed within the wall thickness of the cylinder, and a detection sensor disposed on the bottom wall of the annular cavity.

[0008] A further improvement is that the leak-proof part includes a support seat on the outer wall of the cylinder, with openings on both sides of the support seat. A winding roller is elastically rotatable inside the support seat, and an elastic water-blocking membrane is wound on the outer wall of the winding roller. One end of the elastic water-blocking membrane is connected to the outer wall of the moving roller. Roller frames are fixed at both ends of the shaft of the moving roller. A drive gear is provided on one roller frame via a rotating device. The drive gear meshes with a gear ring, which is sleeved on the outer wall of the cylinder. A slider is provided at the end of the roller frame facing the cylinder. An annular track that cooperates with the slider is sleeved on the outer wall of the cylinder. A guide roller for guiding the elastic water-blocking membrane is provided inside the support seat at a position between the winding roller and the cylinder.

[0009] A further improvement is that the leak-proof part also includes a pressure roller for pressing the elastic water-blocking membrane onto the outer wall of the cylinder. Both ends of the shaft of the pressure roller are rotatably connected to a follower frame. One end of the follower frame is rotatably sleeved on the outer wall of the shaft of the moving roller and connected to the roller frame through an elastic reset member.

[0010] A further improvement is that the leak-proof part also includes a float plate movably sleeved on the outside of the sampling tube. The float plate has a groove with a diameter larger than that of the cylinder. The bottom of the groove has an opening. A sealing plate for closing the opening is symmetrically hinged inside the opening. When the cylinder moves downward, the float plate floats upward relative to the cylinder, causing the sampling tube to push the two sealing plates open. The sealing plates are connected to the inner wall of the groove through an elastic element. The elastic element is used to drive the sealing plates to reset. The float plate is elastically connected to the support seat.

[0011] A further improvement is that the top of the float plate and the outer side of the groove are provided with an annular groove coaxial with the groove, and a folded cylinder is provided in the annular groove. One end of the folded cylinder is connected to the bottom of the annular groove, and the other end is connected to a permanent magnet ring. A magnetic ring for adsorption with the permanent magnet ring is fixedly sleeved on the bottom of the outer wall of the cylinder.

[0012] A further improvement is that the carrier includes a drone, a vertical drive mechanism located at the bottom of the drone, and a floating platform located on the vertical drive mechanism. The floating platform has an opening for the cylinder to pass through, and the telescopic device is mounted on the floating platform via a bracket.

[0013] A method for screening the risk of pollutants in drinking water sources, utilizing the aforementioned screening system, includes the following steps: S1: Obtain water monitoring data of multiple pollutants in one or more drinking water sources through the drinking water source pollutant monitoring data module, and send the water monitoring data to the risk assessment module; S2: Obtain drinking water health benchmark data for the corresponding pollutants from the drinking water source pollutant monitoring data module through the drinking water pollutant health benchmark module; S3: Obtain the removal efficiency data of the corresponding pollutants in drinking water treatment through the pollutant removal efficiency assessment module, and send the removal efficiency data to the risk assessment module; S4: Receive the water monitoring data, drinking water health benchmark data, and removal efficiency data through the risk assessment module, calculate the risk value of each pollutant, and generate a sorted list based on the risk value.

[0014] The beneficial effects of this invention are as follows: The drinking water source pollutant monitoring data module of this invention achieves comprehensive collection of monitoring data of multiple pollutants from one or more water sources. Through the drinking water pollutant health benchmark module and the pollutant removal efficiency assessment module, the system can accurately calculate the risk value of each pollutant through the risk assessment module, thereby generating an accurate pollutant ranking list and realizing accurate identification and classification of pollutants. Secondly, the sampling mechanism in the data acquisition unit of this application has a detection unit and a leak-proof unit. When the surface of the cylinder of the sampling mechanism is damaged, the detection unit controls the leak-proof unit to work. The leak-proof unit seals and protects the damaged area, effectively preventing external water from entering through the damaged area and causing further damage to the cylinder. It also prevents water inside the cylinder from leaking from the damaged area, ensuring the integrity of the water. On the other hand, it enables the cylinder to maintain normal sampling operations for a period of time after damage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the screening system of the present invention; Figure 2 This is a schematic diagram of the data acquisition unit structure of the present invention; Figure 3 For the present invention Figure 2 Another perspective structural diagram; Figure 4 This is a schematic diagram of the sampling mechanism structure of the present invention; Figure 5 For the present invention Figure 4 Structural sectional view; Figure 6 This is a cross-sectional view of the leak-proof part structure of the present invention; Figure 7 This is a partial structural diagram of the leak-proof part of the present invention; Figure 8 For the present invention Figure 5 An enlarged schematic diagram of structure A in the image.

[0016] In the diagram: 100, carrier; 101, UAV; 102, vertical drive mechanism; 103, floating platform; 200, sampling mechanism; 201, cylinder; 202, telescopic device one; 203, telescopic device two; 204, sampling tube; 205, support seat; 206, detection sensor; 207, winding roller; 208, moving roller; 209, roller frame; 210, drive gear; 211, gear ring; 212, circular track; 213, elastic water-resistant membrane; 214, follower frame; 215, pressing roller; 216, guiding roller; 217, floating plate; 218, groove; 219, sealing plate; 220, folding cylinder; 221, magnetic ring. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0018] Example 1 Please see the appendix Figure 1 A drinking water source pollutant risk screening system includes: a drinking water source pollutant monitoring data module, a drinking water pollutant health benchmark module, a pollutant removal efficiency assessment module, and a risk assessment module; Among them, the drinking water source pollutant monitoring data module is used to acquire water body monitoring data of multiple pollutants (such as heavy metals, organic compounds, etc.) in one or more drinking water sources (such as rivers, lakes, reservoirs), and send the water body monitoring data to the risk assessment module; The drinking water pollutant health benchmark module is used to obtain drinking water health benchmark data for corresponding pollutants from the drinking water source pollutant monitoring data module, and send the drinking water health benchmark data to the risk assessment module for comparison with water body monitoring data. In this embodiment, the specific process by which the optional drinking water contaminant health benchmark module acquires drinking water health benchmark data is as follows: 1) Compile a list of pollutants from the drinking water source pollutant monitoring data module; 2) Data Input: Drinking water health benchmark data includes, but is not limited to, contaminant names, benchmark concentrations, and data sources; The drinking water contaminant health baseline module is used to provide safety limit references. It stores or retrieves drinking water health baseline data for contaminants. This data usually comes from international standards (such as the World Health Organization guidelines) or national standards (such as China's "Standards for Drinking Water Quality"), which specify the maximum permissible concentration of various contaminants in drinking water. Exceeding this concentration may cause health hazards. The pollutant removal efficiency assessment module is used to obtain the removal efficiency data of the corresponding pollutants in drinking water treatment, and send the removal efficiency data to the risk assessment module for adjusting the risk calculation. In this embodiment, the specific process by which the optional pollutant removal efficiency assessment module obtains removal efficiency data is as follows: 1) Compile a list of pollutants from the drinking water source pollutant monitoring data module; 2) Data Input: Data on the removal efficiency of pollutants in drinking water treatment includes, but is not limited to, pollutant name, removal efficiency, and data source; In this embodiment, the pollutant removal efficiency assessment module obtains the removal efficiency data of pollutants in drinking water treatment plants (such as filtration, disinfection, adsorption and other processes), which is usually expressed as a percentage (for example, a certain treatment technology can remove 90% of lead), and sends this removal efficiency data to the risk assessment module. The risk assessment module is used to receive water monitoring data, drinking water health benchmark data, and removal efficiency data, calculate the risk value of each pollutant, and generate a ranking list based on the risk value. In this embodiment, the specific process by which the optional risk assessment module obtains the risk value is as follows: 1) Set a risk screening time range and select water monitoring data within that time range; 2) Classify the water monitoring data according to pollutants. For each pollutant, sort the monitored concentrations from smallest to largest (for example, assuming there are 5 monitoring points with concentration values ​​(unit: μg / L) for lead pollutant: [2, 10, 5, 1, 8], after sorting, it becomes: [1, 2, 5, 8, 10]). The 50th percentile is the average concentration characteristic value (in the lead concentration example above, the sorted sequence is [1, 2, 5, 8, 10], and the 50th percentile is the 3rd value (because the median of 5 data points is the 3rd), which is 5 μg / L, indicating that the average concentration characteristic value of lead is 5 μg / L). The 90th percentile is the high concentration characteristic value (in the lead concentration example above, the sequence [1, 2, 5, 8, 10] has 5 data points, and the position of the 90th percentile is calculated as: 0.9 × (5+1) = 5.4, ​​or the 5.4th value, is usually calculated using interpolation (such as linear interpolation) because the data points are discrete. Simply put, we take the 5th value (10 μg / L) as an approximation, or more precisely: the 5th value is 10, the 4th value is 8, and the interpolation result is 8 + 0.4 × (10-8) = 8.8 μg / L. Therefore, the characteristic value for high lead concentration is approximately 8.8 μg / L. 3) Calculate the average risk value for each pollutant: Average risk value = Average concentration characteristic value × (1 – Removal efficiency) ÷ Health baseline; 4) Calculate the high exposure risk value for each pollutant: High exposure risk value = High concentration characteristic value × (1 – Removal rate) ÷ Health baseline; 5) Displaying pollutant risk ranking: Risk ranking includes two data display modes: average risk mode and high exposure risk mode. Selecting the average risk mode will sort all pollutants by average risk value from largest to smallest; selecting the high exposure risk mode will sort all pollutants by high exposure risk value from largest to smallest.

[0019] Preferably, the drinking water source pollutant monitoring data module of this embodiment includes a data acquisition unit and a data transmission unit. The data acquisition unit is used to collect water bodies in one or more drinking water sources and analyze the water bodies to obtain water body monitoring data of pollutants. The data transmission unit is used to send the water body monitoring data to the risk assessment module. In this embodiment, water samples are collected by a data acquisition unit. After collection, the water samples are analyzed using laboratory analysis methods to obtain water monitoring data, including pollutant types and concentrations. Subsequently, the data transmission unit is responsible for sending the water monitoring data obtained through analysis to the system's risk assessment module via wired or wireless network transmission for subsequent calculation and assessment.

[0020] A method for screening the risk of pollutants in drinking water sources, utilizing the aforementioned screening system, includes the following steps: S1: Obtain water monitoring data of multiple pollutants in one or more drinking water sources through the drinking water source pollutant monitoring data module, and send the water monitoring data to the risk assessment module; S2: Obtain drinking water health benchmark data for the corresponding pollutants from the drinking water source pollutant monitoring data module through the drinking water pollutant health benchmark module; S3: Obtain the removal efficiency data of the corresponding pollutants in drinking water treatment through the pollutant removal efficiency assessment module, and send the removal efficiency data to the risk assessment module; S4: Receive water monitoring data, drinking water health benchmark data, and removal efficiency data through the risk assessment module, calculate the risk value of each pollutant, and generate a ranking list based on the risk value.

[0021] Example 2 Please see the appendix Figure 2-8 Based on Embodiment 1, the data acquisition unit of this embodiment includes a carrier 100 and a sampling mechanism 200 disposed on the carrier 100. The sampling mechanism 200 includes a cylinder 201, a telescopic device 202 mounted on the carrier 100 for driving the cylinder 201 to move up and down, a piston movably disposed inside the cylinder 201, a second telescopic device 203 disposed inside the cylinder 201 for driving the piston to move along the axis of the cylinder 201, a sampling tube 204 disposed at the bottom of the cylinder 201 and communicating with the inner cavity of the cylinder 201, and a detection unit and a leak-proof unit disposed on the cylinder 201. The sampling tube 204 is equipped with a solenoid valve. The detection unit is used to detect whether the outer wall of the cylinder 201 is damaged, and controls the leak-proof unit to operate when damage to the outer wall of the cylinder 201 is detected. In this embodiment, the top of the cylinder 201 is hollow. Both the telescopic device 1 202 and the telescopic device 203 can be electric telescopic rods. When sampling water, the cylinder 201 can be adjusted downwards to enter the drinking water source through the telescopic device 1 202. Then, the solenoid valve in the sampling tube 204 is opened, and at the same time, the piston is driven upwards by the telescopic device 203, so that the water in the drinking water source enters the cylinder 201 through the sampling tube 204. After sampling, the solenoid valve is closed. In addition, a filter screen can be installed in the sampling tube 204 to filter the water to prevent large particles from clogging the sampling tube 204. This will not be described in detail here. Considering that the cylinder 201 extends into the drinking water source, its surface may be damaged due to collision, friction, or compression from suspended matter, floating matter, or other fluids in the water. This could cause the water inside the cylinder 201 to seep out from the damaged area when the cylinder 201 leaves the drinking water source or during the transfer to the laboratory by the carrier 100, resulting in water loss and affecting the reliability of the subsequent accurate analysis and risk assessment results of water pollutants in the laboratory. Therefore, a detection section and a leak-proof section are set up for protection.

[0022] Preferably, the detection unit in this embodiment includes an annular cavity formed within the wall thickness of the cylinder 201, and a detection sensor 206 disposed on the bottom wall of the annular cavity. The detection sensor 206 includes several sets of liquid detection sensors. Liquid detection sensors are conventional electrical structures in the art and will not be described in detail here. When the surface of the cylinder 201 is damaged, water from the drinking water source will enter the annular cavity through the damaged location. At this time, the detection sensor 206 will quickly detect the water ingress signal and simultaneously activate the leak prevention unit to seal and protect the damaged area, effectively preventing the water in the cylinder 201 (the water drawn into the cylinder 201 by the sampling tube 204 and the water seeping into the annular cavity from the damaged location) from leaking from the damaged location to ensure the integrity of the water and the accuracy of subsequent analysis, while also preventing the damage from expanding. Optionally, this embodiment also provides a drain outlet (not shown in the figure) communicating with the annular cavity on the outer wall of the cylinder 201. The drain outlet can be provided with a sealing plug structure for sealing. In addition, each electrical component in the sampling mechanism 200 can be electrically connected to the control unit in the carrier 100. For example, after the detection sensor 206 detects water ingress, it sends a signal to the control unit, which then controls the leak prevention unit to perform the corresponding operation.

[0023] Preferably, the leak-proof part of this embodiment includes a support seat 205 disposed on the outer wall of the cylinder 201. Both sides of the support seat 205 have openings to allow the subsequent moving roller 208 to enter and exit the support seat 205. A winding roller 207 is elastically rotatably disposed inside the support seat 205. Optionally, in this embodiment, the winding roller 207 is elastically rotatably connected to the outer wall of the support seat 205 using bearings and torsion springs. An elastic water-blocking membrane 213 is wound around the outer wall of the winding roller 207. Optionally, in this embodiment, the elastic water-blocking membrane 213 is preferably made of thermoplastic polyurethane membrane, silicone membrane, or polyvinyl chloride (PVC) membrane, etc., which has certain elasticity, toughness, and high waterproof performance. One end of the membrane 213 is connected to the outer wall of the moving roller 208. Both ends of the shaft of the moving roller 208 are fixedly provided with roller frames 209. A drive gear 210 is provided on one roller frame 209 through a rotating device (such as a micro servo motor). The drive gear 210 meshes with a toothed ring 211. The toothed ring 211 is sleeved on the outer wall of the cylinder 201. A slider is provided at one end of the roller frame 209 facing the cylinder 201. An annular track 212 that cooperates with the slider is sleeved on the outer wall of the cylinder 201 to guide the moving roller 208 to move smoothly along the circumference of the cylinder 201. A guide roller 216 for guiding the elastic water-blocking membrane 213 is provided in the bearing seat 205 at the position between the winding roller 207 and the cylinder 201. When the leak prevention unit is working, the rotating device drives the drive gear 210 to rotate along the gear ring 211, which in turn drives the moving roller 208 and roller frame 209 to move along the annular track 212. This pulls the elastic water-blocking membrane 213 out from the winding roller 207 and tightly wraps it around the outer wall of the cylinder 201. At this time, the torsion spring stores energy. The elastic water-blocking membrane 213 can effectively prevent external water from entering the annular cavity through the damaged area, thus preventing further damage to the cylinder 201. It also prevents water inside the cylinder 201 from leaking out of the damaged area, ensuring the integrity of the water. Furthermore, its own elasticity can buffer external impacts, allowing the cylinder 201 to maintain normal sampling operations for a period of time after damage, avoiding interruption of the task due to immediate evacuation, and preventing the damaged area from expanding further.

[0024] Preferably, the leak-proof part of this embodiment also includes a pressure roller 215 for pressing the elastic water-blocking membrane 213 against the outer wall of the cylinder 201. The pressure roller 215 is located on the side of the moving roller 208 facing the winding roller 207. Both ends of the shaft of the pressure roller 215 are rotatably connected to a follower frame 214. One end of the follower frame 214 is rotatably sleeved on the outer wall of the shaft of the moving roller 208 and connected to the roller frame 209 through an elastic reset member, such as a torsion spring. When the moving roller 208 carries the elastic water-blocking membrane 213 and moves smoothly along the circumference of the cylinder 201, the pressure roller 215 can adaptively roll against the outer wall of the cylinder 201 under the continuous action of the elastic reset member, and apply uniform radial pressure to the elastic water-blocking membrane 213 between the two, ensuring that a reliable contact and seal are formed between the elastic water-blocking membrane 213 and the surface of the cylinder 201 (especially the damaged area), effectively improving the stability and protection level of the overall leak-proof part structure. Optionally, in this embodiment, an underwater adhesive can be applied to one side of the elastic water-blocking membrane 213 to form an adhesive layer, thereby improving the temporary protective effect of the elastic water-blocking membrane 213 on the cylinder 201.

[0025] As a preferred embodiment, the carrier 100 includes a drone 101, a vertical drive mechanism 102 disposed at the bottom of the drone 101, and a floating platform 103 disposed on the vertical drive mechanism 102. The floating platform 103 has an opening for the cylindrical body 201 to pass through, and the telescopic device 202 is mounted on the floating platform 103 by a bracket. The aforementioned drone 101 and floating platform 103 are conventional structures in the field and will not be described in detail here. The aforementioned vertical drive mechanism 102 includes, for example, a winch, a motor that drives the winch to rotate, and a rope connecting the winch and the floating platform 103. Of course, the vertical drive mechanism 102 is not limited to this one.

[0026] Example 3 Please see the appendix Figure 5-8 Based on Embodiment 1, the leak-proof part of this embodiment also includes a float plate 217 movably sleeved on the outside of the sampling tube 204. The float plate 217 has a groove 218 with a diameter larger than that of the cylinder 201. The bottom of the groove 218 has an opening, and sealing plates 219 for closing the opening are symmetrically hinged inside the opening. When the cylinder 201 moves downward, the float plate 217 floats relative to the cylinder 201 under the action of buoyancy, causing the sampling tube 204 to push the two sealing plates 219 open. The sealing plate 219 is connected to the inner wall of the groove 218 through an elastic element (such as a spring). The elastic element is used to drive the sealing plate 219 to reset and provide a continuous closing torque for the sealing plate 219. The float plate 217 is elastically connected to the support seat 205. Optionally, in this embodiment, one side of the float plate 217 is sleeved on the outer wall of a T-shaped guide rod. One end of the T-shaped guide rod is connected to the support seat 205. A spring is sleeved on the outer wall of the T-shaped guide rod. One end of the spring is connected to the support seat 205, and the other end is connected to the float plate 217. When the cylinder 201 moves downwards into the drinking water source, the float 217 rises relative to the cylinder 201 under the buoyancy of the water until it contacts the bottom surface of the cylinder 201. As the float 217 rises, the sampling tube 204 pushes the two sealing plates 219 open to collect water samples. During this process, the float 217 itself forms a physical barrier against the bottom surface of the cylinder 201, effectively buffering the direct impact of suspended solids or foreign objects in the water and significantly reducing the probability of damage to the bottom surface of the cylinder 201. When sampling is completed and the cylinder 201 moves upwards away from the water source, the buoyancy of the water decreases. When the float plate 217 is lowered and reset, the sealing plate 219 automatically closes under the restoring force of the elastic element, resealing the opening. This allows the float plate 217 to also serve as a water catcher below the sampling tube 204. If the bottom surface of the cylinder 201 is damaged, when the cylinder 201 is removed from the water source or during the transfer to the laboratory by the carrier 100, the water inside the cylinder 201 will seep down from the damaged bottom surface of the cylinder 201 into the groove 218 in the float plate 217 and be temporarily sealed, instead of being directly lost to the external environment, thus providing a guarantee for subsequent analysis.

[0027] Preferably, in this embodiment, the top of the float 217 and the outer side of the groove 218 are provided with an annular groove coaxial with the groove 218, and a folding cylinder 220 is provided in the annular groove. One end of the folding cylinder 220 is connected to the bottom of the annular groove, and the other end is connected to a permanent magnet ring. A magnetic ring 221 for adsorption with the permanent magnet ring is fixedly sleeved on the bottom of the outer wall of the cylinder 201. When the float 217 floats relative to the cylinder 201 under the action of buoyancy and contacts the bottom surface of the cylinder 201, the permanent magnet ring and the magnetic ring 221 are adsorbed. Subsequently, the float 217 is reset downward so that the folding cylinder 220 unfolds and is sleeved between the cylinder 201 and the float 217, so that the water temporarily sealed in the groove 218 is not easily polluted.

[0028] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A drinking water source pollutant risk screening system, characterized in that, include: The system includes a drinking water source pollutant monitoring data module, a drinking water pollutant health benchmark module, a pollutant removal efficiency assessment module, and a risk assessment module. Among them, the drinking water source pollutant monitoring data module is used to acquire water body monitoring data of multiple pollutants in one or more drinking water sources and send the water body monitoring data to the risk assessment module; The drinking water pollutant health benchmark module is used to obtain drinking water health benchmark data for corresponding pollutants from the drinking water source pollutant monitoring data module, and send the drinking water health benchmark data to the risk assessment module. The pollutant removal efficiency assessment module is used to obtain the removal efficiency data of the corresponding pollutants in drinking water treatment and send the removal efficiency data to the risk assessment module. The risk assessment module is used to receive the water body monitoring data, drinking water health benchmark data and removal efficiency data, calculate the risk value of each pollutant, and generate a sorted list based on the risk value.

2. The screening system according to claim 1, characterized in that, The drinking water source pollutant monitoring data module includes a data acquisition unit and a data transmission unit. The data acquisition unit is used to collect water bodies from one or more drinking water sources and analyze the water bodies to obtain water body monitoring data of pollutants. The data transmission unit is used to send the water body monitoring data to the risk assessment module.

3. The screening system according to claim 2, characterized in that, The data acquisition unit includes a carrier (100) and a sampling mechanism (200) disposed on the carrier (100); The sampling mechanism (200) includes a cylinder (201), a telescopic device 1 (202) mounted on the carrier (100) for driving the cylinder (201) to move up and down, a piston movable inside the cylinder (201), a telescopic device 2 (203) mounted inside the cylinder (201) for driving the piston to move along the axis of the cylinder (201), a sampling tube (204) located at the bottom of the cylinder (201) and communicating with the inner cavity of the cylinder (201), and a detection part and a leak-proof part mounted on the cylinder (201). The detection part is used to detect whether the outer wall of the cylinder (201) is damaged, and controls the leak-proof part to work when damage to the outer wall of the cylinder (201) is detected.

4. The screening system according to claim 3, characterized in that, The detection unit includes an annular cavity formed within the wall thickness of the cylinder (201) and a detection sensor (206) disposed on the bottom wall of the annular cavity.

5. The screening system according to claim 3, characterized in that, The leak-proof part includes a support seat (205) disposed on the outer wall of the cylinder (201). Both sides of the support seat (205) have openings. A winding roller (207) is elastically rotatable inside the support seat (205). An elastic water-blocking membrane (213) is wound around the outer wall of the winding roller (207). One end of the elastic water-blocking membrane (213) is connected to the outer wall of a movable roller (208). Roller frames (209) are fixed at both ends of the shaft of the movable roller (208). A roller frame (209) is mounted on one of the roller frames (209) via a rotating... The equipment is equipped with a drive gear (210), which meshes with a toothed ring (211). The toothed ring (211) is sleeved on the outer wall of the cylinder (201). The roller frame (209) is provided with a slider at one end facing the cylinder (201). The outer wall of the cylinder (201) is sleeved with an annular track (212) that cooperates with the slider. The bearing seat (205) is provided with a guide roller (216) for guiding the elastic water-blocking membrane (213) at a position between the winding roller (207) and the cylinder (201).

6. The screening system according to claim 5, characterized in that, The leak-proof part also includes a pressure roller (215) for pressing the elastic water-blocking membrane (213) against the outer wall of the cylinder (201). Both ends of the shaft of the pressure roller (215) are rotatably connected to a follower frame (214). One end of the follower frame (214) is rotatably sleeved on the outer wall of the shaft of the moving roller (208) and connected to the roller frame (209) through an elastic reset member.

7. The screening system according to claim 5, characterized in that, The leak-proof part also includes a float plate (217) movably sleeved on the outside of the sampling tube (204). The float plate (217) has a groove (218) with a diameter larger than that of the cylinder (201). The bottom of the groove (218) has an opening. The opening is symmetrically hinged with sealing plates (219) for closing the opening. When the cylinder (201) moves downward, the float plate (217) floats relative to the cylinder (201), causing the sampling tube (204) to push the two sealing plates (219) open. The sealing plates (219) are connected to the inner wall of the groove (218) through an elastic element. The elastic element is used to drive the sealing plates (219) to reset. The float plate (217) is elastically connected to the support seat (205).

8. The screening system according to claim 7, characterized in that, The top of the float (217) and the outer side of the groove (218) are provided with an annular groove coaxial with the groove (218), and a folded cylinder (220) is provided in the annular groove. One end of the folded cylinder (220) is connected to the bottom of the annular groove, and the other end is connected to a permanent magnet ring. A magnetic ring (221) for adsorption with the permanent magnet ring is fixedly sleeved on the bottom of the outer wall of the cylinder (201).

9. The screening system according to claim 3, characterized in that, The carrier (100) includes a drone (101), a vertical drive mechanism (102) located at the bottom of the drone (101), and a floating platform (103) located on the vertical drive mechanism (102). The floating platform (103) has an opening for the cylindrical body (201) to pass through. The telescopic device (202) is mounted on the floating platform (103) by a bracket.

10. A method for screening the risk of pollutants in drinking water sources, utilizing the screening system as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Obtain water monitoring data of multiple pollutants in one or more drinking water sources through the drinking water source pollutant monitoring data module, and send the water monitoring data to the risk assessment module; S2: Obtain drinking water health benchmark data for the corresponding pollutants from the drinking water source pollutant monitoring data module through the drinking water pollutant health benchmark module; S3: Obtain the removal efficiency data of the corresponding pollutants in drinking water treatment through the pollutant removal efficiency assessment module, and send the removal efficiency data to the risk assessment module; S4: Receive the water monitoring data, drinking water health benchmark data, and removal efficiency data through the risk assessment module, calculate the risk value of each pollutant, and generate a sorted list based on the risk value.

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