Automatic monitoring system for surface water

Abstract

The utility model discloses an automatic surface water monitoring system, which comprises a sampling module for sampling a water body and conveying the sampled water body, and is characterized by comprising a precipitation module and a first measurement module which are connected with the sampling module, and a conveying module arranged on the precipitation module, and the second measuring module is connected with the precipitation module through a conveying module. The sedimentation time of the sampling water body in the second sedimentation tank is prolonged according to the turbidity of the water body, the turbidity of the sampling water body is further reduced, the influence on the total phosphorus measuring unit in the second measuring module is reduced, and the data accuracy of the total phosphorus measuring unit is improved.

Description

Technical Field

[0001] This utility model relates to the field of surface water monitoring technology, specifically to an automatic surface water monitoring system. Background Technology

[0002] Surface water refers to water bodies that exist on the Earth's surface and are exposed to the atmosphere, including various forms of liquid and solid water such as rivers, lakes, swamps, glaciers, and ice sheets. It is formed by the accumulation of natural precipitation and snowfall over many years and is constantly renewed and circulated through evaporation, infiltration, and flow, making it an important component of the global water cycle.

[0003] An automatic water quality monitoring station is an automated monitoring system used for real-time and continuous monitoring of the water quality of surface water, groundwater, drinking water sources, and other water bodies. It integrates various advanced water quality sensors, data acquisition and transmission equipment, an automated control system, and related software platforms to achieve high-precision, high-frequency measurement and remote monitoring of water quality parameters.

[0004] Existing water quality monitoring stations typically monitor five conventional parameters (water temperature, pH, conductivity, dissolved oxygen, and turbidity), permanganate index, ammonia nitrogen, total phosphorus, and total nitrogen. In practice, total phosphorus monitoring uses spectrophotometry. However, surface water often contains impurities such as silt, suspended particulate matter, and colloidal substances, which can easily cause an increase in turbidity, affecting water quality monitoring data. In particular, the colorimetric effect caused by water turbidity severely interferes with total phosphorus data, leading to a significant deviation between the total phosphorus data and the true value. According to the Technical Specification for Monitoring Surface Water Environmental Quality (HJ91.2—2022), when collecting total phosphorus water samples, if a large amount of water samples with fixed settling properties still remain after natural settling for 30 minutes, water samples should be collected again on-site. The settling time should be extended or centrifugation should be used for treatment based on the original water turbidity measurement results. Specifically, water samples should be collected in non-tidal river sections. If the original water turbidity is between 200 and 500 NTU, it should be allowed to settle naturally for 60 minutes, and then the upper water sample should be taken. If the original water turbidity is greater than 500 NTU, centrifugation should be used.

[0005] However, when the existing surface water quality monitoring system performs automatic monitoring of surface water, the turbidity values ​​of the water body cannot remain stable for a long period of time. Therefore, in order to avoid interfering with the monitoring data, the water sampling unit collects the water into the sedimentation tank and allows it to settle naturally for 30 minutes before distributing the water sample to each measuring instrument. Since the current water quality monitoring system uses a sedimentation tank for all measuring instruments, when the turbidity of the water body increases in certain time periods, simply allowing it to settle naturally for 30 minutes cannot reduce the impact of high turbidity on the total phosphorus data.

[0006] Therefore, there is a need for an automatic water quality monitoring system that can determine water turbidity, reduce the interference of high turbidity water on total phosphorus data, and improve the accuracy of total phosphorus data without affecting the testing of other monitoring indicators. Utility Model Content

[0007] The purpose of this invention is to propose an automatic surface water monitoring system that solves the problem in the prior art where all measuring instruments in the existing automatic surface water monitoring system share a sedimentation tank. When the turbidity of the water rises in certain time periods, fixed-time sedimentation of the water cannot reduce the impact of high turbidity on the accuracy of total phosphorus data.

[0008] To achieve the above objectives, this utility model proposes an automatic surface water monitoring system, comprising a sampling module for sampling water and transporting the sampled water, characterized in that it includes a sedimentation module and a first measurement module connected to the sampling module, a transport module disposed on the sedimentation module, and a second measurement module connected to the sedimentation module through the transport module.

[0009] Optionally, the sedimentation module and the first measurement module are arranged side by side, and the sampling module simultaneously delivers the sampled water to the sedimentation module and the first measurement module;

[0010] Optionally, the sedimentation module includes a first sedimentation tank and a second sedimentation tank arranged in parallel with the first sedimentation tank. Both the second sedimentation tank and the first sedimentation tank are connected to the second measurement module through a conveying module, and the two sedimentation tanks are identical.

[0011] Optionally, a first vent pipe is connected to the first sedimentation tank, the second sedimentation tank, and the five-element tank, and a first vent solenoid valve is installed on the first vent pipe.

[0012] Optionally, the second measurement module includes a total phosphorus measurement unit, a permanganate measurement unit, an ammonia nitrogen measurement unit, and a total nitrogen measurement unit. The total nitrogen measurement unit, ammonia nitrogen measurement unit, and permanganate measurement unit are all connected to the first sedimentation tank and the second sedimentation tank through a conveying module. The first sedimentation tank and the second sedimentation tank are both connected to the total phosphorus measurement unit.

[0013] Optionally, the total phosphorus measurement unit, permanganate measurement unit, ammonia nitrogen measurement unit and total nitrogen measurement unit are each equipped with a second vent pipe, and a second vent solenoid valve is installed on the second vent pipe.

[0014] Optionally, the sampling module includes an inlet pipe, a sampling water pump installed on the inlet pipe, a main inlet pipe connected to the inlet pipe, and a branch pipe connected to the main inlet pipe.

[0015] Optionally, there is no less than one inlet pipe, and each inlet pipe is connected to the main inlet pipe; multiple branch pipes are respectively connected to the first sedimentation tank, the second sedimentation tank and the first measurement module.

[0016] Optionally, a first solenoid valve for controlling the opening and closing of the water distribution pipe is installed on the water distribution pipe connected to the second sedimentation tank.

[0017] Optionally, the first measurement module includes a five-sensor pool and a sensor unit installed in the five-sensor pool. The sensor unit can detect the water temperature, pH, conductivity, dissolved oxygen and turbidity of the water in the five-sensor pool. Based on the detection results, the delivery module delivers the water in the first sedimentation tank and the water in the second sedimentation tank to the total phosphorus measurement unit.

[0018] Optionally, when the turbidity of the sampled water detected by the sensor unit in the five-parameter pool is less than or equal to 200 NTU, the sedimentation time of the sampled water in the first sedimentation tank and the second sedimentation tank is the same, and the water in the first sedimentation tank is transported to the total phosphorus measurement unit.

[0019] Optionally, the time the sampled water is in the second sedimentation tank is twice the time the sampled water is in the first sedimentation tank.

[0020] Optionally, the delivery module includes a second delivery pipe connected at one end to the second sedimentation tank, a first delivery pipe connected at one end to the first sedimentation tank and at the other end to the second delivery pipe, a sample injection pump mounted on the second delivery pipe, a first control valve mounted on the first and second delivery pipes, and multiple sample injection branch pipes connected to the second delivery pipe. The first control valve is located at the water inlet end of the sample injection pump.

[0021] Optionally, multiple injection tubes are respectively connected to the total phosphorus measurement unit, the permanganate measurement unit, the ammonia nitrogen measurement unit, and the total nitrogen measurement unit. The injection tube connected to the total phosphorus measurement unit is equipped with a first total phosphorus control valve and a second total phosphorus control valve.

[0022] Optionally, the second delivery pipe is also provided with a filter branch module and a branch control valve. The filter branch module is located between the injection pump and the injection sub-pipe, and the branch control valve is located between the two connection points of the filter branch module and the second delivery pipe.

[0023] Optionally, the filter branch module includes a first branch pipe connected to the second delivery pipe at both ends, a first filter and a second filter installed on the first branch pipe, a second branch pipe connected at one end to the second delivery pipe and at the other end to the first branch pipe, a second control valve installed on the first branch pipe, and a third control valve installed on the second branch pipe.

[0024] Optionally, the second branch pipe is located between the first filter and the second filter, and the second control valve is located at the outlet of the second filter.

[0025] Optionally, the branch control valve is located between the connection between the first branch and the second delivery pipe and the connection between the second branch and the second delivery pipe.

[0026] Compared with the prior art, the present invention provides an automatic surface water monitoring system, which has the following beneficial effects:

[0027] This automatic surface water monitoring system divides the sedimentation module into a first sedimentation tank and a second sedimentation tank. Both tanks are simultaneously filled and sedimented, ensuring that the turbidity and sedimentation effect of the sampled water are identical in both tanks. When the turbidity of the sampled water is too high, the sampled water from the first sedimentation tank is transferred to the second measurement unit for measurement, while the sampled water in the second sedimentation tank is directly drained. Conversely, when the turbidity of the sampled water is too high, the sampled water from the first sedimentation tank is transferred to the second measurement unit for monitoring other indices first, extending the sedimentation time in the second sedimentation tank to further reduce the turbidity of the sampled water. This reduces the impact on the total phosphorus measurement unit in the second measurement module and improves the accuracy of the total phosphorus measurement data. Attached Figure Description

[0028] Figure 1 This is the overall system flowchart of this utility model.

[0029] Figure 2 This is a schematic diagram of the water flow direction according to this utility model.

[0030] Figure 3 This is the system logic diagram of this utility model.

[0031] The diagram identifies the following components: 1. Sampling module; 11. Inlet pipe; 12. Sampling pump; 13. Main inlet pipe; 14. Branch pipe; 2. Control module; 3. Sedimentation module; 31. First sedimentation tank; 311. First vent pipe; 312. First vent solenoid valve; 32. Second sedimentation tank; 321. First solenoid valve; 4. First measurement module; 41. Five-parameter tank; 5. Transport module; 51. First transport pipe; 52. Second transport pipe; 521. Second total phosphorus control valve; 53. Sampling pump; 54. First control... 55. Injection pipe; 551. First total phosphorus control valve; 56. Filter branch pipe module; 561. First branch pipe; 562. First filter; 563. Second filter; 564. Second branch pipe; 565. Second control valve; 566. Third control valve; 57. Branch pipe control valve; 6. Second measurement module; 61. Total phosphorus measurement unit; 611. Second vent pipe; 612. Second vent solenoid valve; 62. Permanganate measurement unit; 63. Ammonia nitrogen measurement unit; 64. Total nitrogen measurement unit. Detailed Implementation

[0032] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, illustrates the present invention. Numerous specific details are set forth in the description below to provide a thorough understanding of the invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] The automatic surface water monitoring system of this application can be applied to situations such as surface water monitoring where the turbidity of surface water varies greatly, and of course it can also be used in other similar application scenarios. The following is a detailed description of an automatic surface water monitoring system.

[0034] See appendix Figure 1 — Figure 3 The diagram shows a preferred embodiment of an automatic surface water monitoring system according to this application. The automatic surface water monitoring system includes a sampling module 1 for sampling water bodies and transporting the sampled water, a control module for receiving signals, a sedimentation module 3 and a first measurement module 4 connected to the sampling module 1, a transport module 5 mounted on the sedimentation module 3, and a second measurement module 6 connected to the sedimentation module 3 via the transport module 5.

[0035] This invention uses a sampling module 1 to sample surface water and transport the sampled water to a sedimentation module and a first measurement module 4. The sedimentation module 3 settles the sampled water, reducing turbidity and its impact on subsequent monitoring. The first measurement module 4 measures five parameters of the sampled water: temperature, pH, conductivity, dissolved oxygen, and turbidity. Temperature, pH, conductivity, and dissolved oxygen are not affected by turbidity. A transport module 5 transports the settled sampled water to a second measurement module 6. The second measurement module 6 measures water parameters significantly affected by turbidity. This invention ensures the accuracy of sampled water testing by differentiating the degree of turbidity influence during the testing process.

[0036] See appendix Figure 1 — Figure 3 As shown, in this utility model, the sedimentation module 3 and the first measurement module 4 are arranged side by side, and the sampling module 1 simultaneously delivers the sampled water to the sedimentation module 3 and the first measurement module 4.

[0037] This invention arranges the sedimentation module 3 and the first measurement module 4 side by side, so that when the sampling module 1 is sampling surface water, the water sample obtained is simultaneously delivered to the sedimentation module 3 and the first measurement module 4. This ensures that the water in the sedimentation module 3 and the water in the first measurement module 4 are sampled at the same time and location, and are the same sampled water. The five parameters detected by the first measurement module 4 are the same as the five parameters in the sedimentation module.

[0038] See appendix Figure 1 — Figure 3 As shown, in this utility model, the sampling module 1 includes an inlet pipe 11, a sampling water pump 12 installed on the inlet pipe 11, a main inlet pipe 13 connected to the inlet pipe 11, and a branch pipe 14 connected to the main inlet pipe 13. It should be noted that the inlet pipe 11 of this application is also equipped with a ball valve, which is located at the outlet end of the sampling water pump 12.

[0039] This utility model uses an inlet pipe 11 in conjunction with a sampling pump 12 to extract and sample external surface water. The main inlet pipe 13 ensures that the surface water extracted by the inlet pipe 11 is collected and then the water sample parameters are tested. This reduces pipeline costs and the number of pipeline connection points required.

[0040] See appendix Figure 1 — Figure 3 As shown, in this utility model, the number of water inlet pipes 11 is not less than one, and each water inlet pipe 11 is connected to the main water inlet pipe 13; multiple branch water pipes 14 are respectively connected to the first sedimentation tank 31, the second sedimentation tank 32 and the five-parameter tank 41 in the first measurement module 4.

[0041] This invention utilizes multiple inlet pipes 11 to allow for sampling of surface water at multiple locations, expanding the monitoring range. A branch pipe 14 is used to transport the sampled water from the main inlet pipe 13 to the first sedimentation tank 31, the second sedimentation tank 32, and the five-parameter tank 41. It is important to note that a first solenoid valve 321 is installed on the branch pipe 14 connected to the second sedimentation tank 32 to control its opening and closing. This solenoid valve 321 controls whether water samples are introduced into the first sedimentation tank 31. Since the detection frequency of the five parameters in the five-parameter tank 41 is higher than that in the second measurement module 6, and the sedimentation time in the first sedimentation tank 31 needs to be extended, when the five-parameter tank 41 is being introduced, the first sedimentation tank 31 is still containing the previous water sample. Therefore, new water samples cannot enter the first sedimentation tank 31 and affect the existing water sample, thus ensuring the accuracy of the parameters detected by the second measurement module 6.

[0042] See appendix Figure 1— Figure 3 As shown, in this utility model, the sedimentation module 3 includes a first sedimentation tank 31 and a second sedimentation tank 32 arranged in parallel with the first sedimentation tank 31. Both the second sedimentation tank 32 and the first sedimentation tank 31 are connected to the second measurement module 6 through the conveying module 5, and the two sedimentation tanks have the same structure and size.

[0043] This invention, by setting up a first sedimentation tank 31 and a second sedimentation tank 32, and arranging the first sedimentation tank 31 and the second sedimentation tank 32 side by side, ensures that the water sample in the first sedimentation tank 31 and the second sedimentation tank 32 contains the same water sample. This ensures that the turbidity of the water sample and the sedimentation effect in the sedimentation tank are the same. Furthermore, the arrangement of the two sedimentation tanks allows for sedimentation in the sedimentation tanks for different times according to the turbidity of the water sample, reducing the influence of turbidity on the parameters to be detected by the second measurement module 6, improving the accuracy of the parameters detected by the second measurement module 6, and enabling it to meet the requirements of different detection frequencies of the second measurement module 6 and the first measurement module 4.

[0044] See appendix Figure 1 — Figure 3 As shown, in this utility model, the first sedimentation tank 31, the second sedimentation tank 32 and the five-element tank 41 are all connected to a first vent pipe 311, and a first vent solenoid valve 312 is installed on each of the first vent pipes 311.

[0045] This utility model uses a first vent pipe 311 to discharge the sampled water in the pool, providing a basis for the entry of the next sampled water. It works in conjunction with a first vent solenoid valve 312 to control the opening and closing of the first vent pipe 311.

[0046] See appendix Figure 1 — Figure 3 As shown, in this utility model, the first measurement module 4 includes a five-parameter pool 41 and a sensor unit installed in the five-parameter pool 41. The sensor unit can detect the water temperature, pH, conductivity, dissolved oxygen and turbidity of the water in the five-parameter pool 41 and feed the detection results back to the control module. After receiving the feedback, the control module controls the delivery module 5 to deliver the water in the first sedimentation tank 31 and the water in the second sedimentation tank 32 to the total phosphorus measurement unit 61.

[0047] This invention utilizes a five-parameter pool 41 to temporarily store sampled water, providing installation conditions for the sensor unit, enabling the sensor unit to detect the sampled water. The sensor unit detects water temperature, pH, conductivity, dissolved oxygen, and turbidity in the sampled water. The turbidity detection result is similar to or even the same as the turbidity of the first sedimentation tank 31 and the second sedimentation tank 32, and can be used as the turbidity of the first sedimentation tank 31 and the second sedimentation tank 32. It should be noted that the sensor unit includes multiple sensors, each sensing a corresponding parameter.

[0048] See appendix Figure 1 — Figure 3 As shown, in this utility model, the second measuring module 6 includes a total phosphorus measuring unit 61, a permanganate measuring unit 62, an ammonia nitrogen measuring unit 63, and a total nitrogen measuring unit 64. The total nitrogen measuring unit 64, the ammonia nitrogen measuring unit 63, and the permanganate measuring unit 62 are all connected to the first sedimentation tank 31 and the second sedimentation tank 32 through the conveying module 5. The total phosphorus measuring unit 61, the permanganate measuring unit 62, the ammonia nitrogen measuring unit 63, and the total nitrogen measuring unit 64 are all provided with a second vent pipe 611, and a second vent solenoid valve 612 is installed on the second vent pipe 611.

[0049] This invention connects both the first sedimentation tank 31 and the second sedimentation tank 32 to the conveying module 5. The conveying module 5 transports the water sampled from either the first sedimentation tank 31 or the second sedimentation tank 32 to the total phosphorus measurement unit 61. Specifically, since the turbidity of the first sedimentation tank 31 and the second sedimentation tank 32 is similar to or even the same as the turbidity of the water in the five-evaluation tank 41, the turbidity of the five-evaluation tank 41 is used as the turbidity of the first sedimentation tank 31 and the second sedimentation tank 32. After water sampling is completed, the sensor unit measures the turbidity of the water in the five-evaluation tank 41... The turbidity is detected. When the turbidity is less than or equal to 200 NTU, the first sedimentation tank 31 delivers sampled water to all units of the second measurement module 6. When the turbidity is greater than 200 NTU, it indicates that even after a specified sedimentation time, it will still affect the total phosphorus parameter of the total phosphorus measurement unit 61. The sedimentation time needs to be extended. Therefore, the sampled water in the first sedimentation tank 31 is first delivered to other units in the second measurement module 6 for parameter measurement. The parameter measurement of the total phosphorus measurement unit 61 is performed through the sampled water in the second sedimentation tank 32.

[0050] See appendix Figure 1 — Figure 3As shown, in this utility model, the conveying module 5 includes a second conveying pipe 52 with one end connected to the second sedimentation tank 32, a first conveying pipe 51 with one end connected to the first sedimentation tank 31 and the other end connected to the second conveying pipe 52, a sample injection pump 53 installed on the second conveying pipe 52, a first control valve 54 installed on the first conveying pipe 51 and the second conveying pipe 52, and multiple sample injection branch pipes 55 connected to the second conveying pipe 52. The first control valve 54 is located at the water inlet end of the sample injection pump 53.

[0051] This invention utilizes a first delivery pipe 51 and a second delivery pipe 52 to transport the settled sampled water from the first sedimentation tank 31 and the second sedimentation tank 32 to the second measurement module 6. A sampling pump 53 is used to pressurize the settled water, increasing its flow velocity. A first control valve 54 controls the opening and closing of the first delivery pipe 51 and the second delivery pipe 52, thus controlling the flow of the settled sampled water in the first sedimentation tank 31 and the second sedimentation tank 32. A sampling branch pipe 55 is used to transport the sampled water from the pipeline to each measurement unit for data measurement. It should be noted that the connection point between the first delivery pipe 51 and the second delivery pipe 52 is located at the point where the sampling pump 53... At the water inlet end, multiple sample inlet pipes 55 are respectively connected to the total phosphorus measurement unit 61, the permanganate measurement unit 62, the ammonia nitrogen measurement unit 63, and the total nitrogen measurement unit 64. The sample inlet pipe 55 connected to the total phosphorus measurement unit 61 is equipped with a first total phosphorus control valve 551, and the second delivery pipe 52 is equipped with a second total phosphorus control valve 521. The second total phosphorus control valve 521 is used to control the water inlet of other units in the second measurement module 6 except for the total phosphorus measurement unit 61. The second total phosphorus control valve 521 is located between two sample inlet pipes 55, and one of the sample inlet pipes 55 is connected to the total phosphorus measurement unit 61. It should be noted that, according to the direction of water flow in the second delivery pipe 52, the water flow first passes through the sample inlet pipe 55 connected to the total phosphorus measurement unit 61.

[0052] See appendix Figure 1 — Figure 3 As shown, in this utility model, the second delivery pipe 52 is also provided with a filter branch pipe module 56 and a branch pipe control valve 57; wherein, the filter branch pipe module 56 is located between the sample pump 53 and the sample branch pipe 55, and the branch pipe control valve 57 is located between the two connection points of the filter branch pipe module 56 and the second delivery pipe 52.

[0053] This invention enables the secondary filtration of the sampled water after sedimentation through the setting of the filter branch pipe module 56; the setting of the branch pipe control valve 57 is used to control the flow direction of the sampled water, so that the water can enter the filter branch pipe module 56 or be directly transported to the second measurement module 6 through the second delivery pipe 52.

[0054] See appendix Figure 1 — Figure 3 As shown, in this utility model, the filter branch pipe module 56 includes a first branch pipe 561 connected to the second delivery pipe 52 at both ends, a first filter 562 and a second filter 563 installed on the first branch pipe 561, a second branch pipe 564 connected at one end to the second delivery pipe 52 and at the other end to the first branch pipe 561, a second control valve 565 disposed on the first branch pipe 561, and a third control valve 566 disposed on the second branch pipe 564. The second branch pipe 564 is located between the first filter 562 and the second filter 563, and the second control valve 565 is located at the outlet end of the second filter 563. The branch pipe control valve 57 is located between the connection between the first branch pipe 561 and the second delivery pipe 52 and the connection between the second branch pipe 564 and the second delivery pipe 52.

[0055] This invention utilizes a first filter 562 and a second filter 563 to finely filter the water in the sedimentation tank, preventing fine impurities from entering the measuring unit of the second measuring module and damaging the instrument, thus protecting the measuring instrument and improving the accuracy of the measurements taken by the second measuring module 6. By placing the second control valve 565 at the outlet of the second filter 563, some impurities are prevented from accumulating at the second control valve 565, avoiding the large amount of impurities entering the second filter 563 after the second control valve 565 is opened, which would affect the filtration effect. Furthermore, the pipeline can be backflushed and cleaned by closing the second control valve 565 and the third control valve 566. The second branch pipe 564 allows for determination of whether two filters are needed based on the specific turbidity value of the water sample, reducing the frequency of filter use and lowering monitoring costs while ensuring the accuracy of the data from the second measuring module 6.

[0056] See appendix Figure 1 — Figure 3 As shown, the monitoring process of this utility model is as follows:

[0057] The first step involves the control module starting the sampling water pump 12 to draw surface water into the inlet pipe 11 equipped with the sampling water pump 12. The water then flows along the inlet pipe 11 into the main inlet pipe 13, and flows through the branch pipe 14 into the first sedimentation tank 31, the second sedimentation tank 32, and the five-stage sedimentation tank 41. The pumping stops after a specified time or when the three tanks reach the specified water level. It should be noted that multiple sampling water pumps 12 are turned on alternately.

[0058] The second step is that the control module controls the sensor unit in the five-parameter pool 41 to start the five-parameter detection. The sensor unit transmits the detected values ​​of the five parameters to the control module. The control module controls the sedimentation time of the first sedimentation pool 31 and the second sedimentation pool 32 according to the detected turbidity of the water sample in the five-parameter pool 41.

[0059] Thirdly, when the turbidity of the water in the five-parameter pool 41 is less than or equal to 200 NTU, the control module opens the first control valve 54 on the first delivery pipe 51 after a specified time, and simultaneously opens the first total phosphorus control valve 551 and the second total phosphorus control valve 521, allowing the sampled water in the first sedimentation tank 31 to flow into each measurement unit of the second measurement module 6 for data measurement. The measurement results are then fed back to the control module, and the first venting solenoid valve 312 on the second sedimentation tank 32 is opened to vent the second sedimentation tank 32. When the turbidity of the water in the five-parameter pool 41 is greater than 200 NTU, the control module opens the first control valve 54 on the first delivery pipe 51 after a specified time. The first control valve 54 is closed, the first total phosphorus control valve 551 is closed, and the second total phosphorus control valve 521 is opened, so that the sampled water in the first sedimentation tank 31 flows into the permanganate measurement unit 62, ammonia nitrogen measurement unit 63 and total nitrogen measurement unit 64 of the second measurement module 6. The second sedimentation tank 32 continues to settle. After settling for the same specified time again, the control module controls the first control valve 54 on the second delivery pipe 52 to open, and at the same time opens the first total phosphorus control valve 551 and closes the second total phosphorus control valve 521, so that the water flows into the total phosphorus measurement unit 61 for total phosphorus data measurement. After the specified time, the control module controls the first total phosphorus control valve 551 to close and controls the second sedimentation tank to start emptying.

[0060] The above embodiments are illustrative of this application and are not intended to limit this application. Any simple modifications to this application are within the protection scope of this application.

Claims

1. An automatic surface water monitoring system, comprising a sampling module (1) for sampling water and transporting the sampled water, characterized in that, A sedimentation module (3) and a first measurement module (4) connected to the sampling module (1), a conveying module (5) set on the sedimentation module (3), and a second measurement module (6) connected to the sedimentation module (3) through the conveying module (5). The sedimentation module (3) and the first measurement module (4) are arranged side by side. The sampling module (1) simultaneously delivers the sampled water to the sedimentation module (3) and the first measurement module (4). The sedimentation module (3) includes a first sedimentation tank (31) and a second sedimentation tank (32) arranged in parallel with the first sedimentation tank (31). The second sedimentation tank (32) and the first sedimentation tank (31) are both connected to the second measurement module (6) through the conveying module (5), and the two sedimentation tanks are identical. The first measurement module (4) includes a five-parameter pool (41); The second measurement module (6) includes a total phosphorus measurement unit (61), and the first sedimentation tank (31) and the second sedimentation tank (32) are both connected to the total phosphorus measurement unit (61).

2. The automatic surface water monitoring system according to claim 1, characterized in that, The sampling module (1) includes an inlet pipe (11), a sampling water pump (12) installed on the inlet pipe (11), a main inlet pipe (13) connected to the inlet pipe (11), and a branch pipe (14) connected to the main inlet pipe (13).

3. The automatic surface water monitoring system according to claim 2, characterized in that, The number of water inlet pipes (11) is not less than one, and each water inlet pipe (11) is connected to the main water inlet pipe (13); The multiple water distribution pipes (14) are respectively connected to the first sedimentation tank (31), the second sedimentation tank (32) and the first measurement module (4).

4. The automatic surface water monitoring system according to claim 3, characterized in that, A first solenoid valve (321) for controlling the opening and closing of the water distribution pipe (14) is installed on the water distribution pipe (14) which is connected to the second sedimentation tank (32).

5. The automatic surface water monitoring system according to claim 1, characterized in that, The first measurement module (4) also includes a sensor unit installed in the five-sensor pool (41). The sensor unit can detect the water temperature, pH, conductivity, dissolved oxygen and turbidity of the water in the five-sensor pool (41). According to the detection results, the transport module (5) transports the water in the first sedimentation tank (31) and the water in the second sedimentation tank (32) to the total phosphorus measurement unit (61).

6. The automatic surface water monitoring system according to claim 1, characterized in that, The first sedimentation tank (31), the second sedimentation tank (32) and the five-parameter tank (41) are all connected to a first vent pipe (311), and a first vent solenoid valve (312) is installed on the first vent pipe (311). The second measurement module (6) also includes a permanganate measurement unit (62), an ammonia nitrogen measurement unit (63), and a total nitrogen measurement unit (64). The total nitrogen measurement unit (64), the ammonia nitrogen measurement unit (63), and the permanganate measurement unit (62) are all connected to the first sedimentation tank (31) and the second sedimentation tank (32) through the conveying module (5). The total phosphorus measuring unit (61), permanganate measuring unit (62), ammonia nitrogen measuring unit (63) and total nitrogen measuring unit (64) are each equipped with a second vent pipe (611), and a second vent solenoid valve (612) is installed on each of the second vent pipes (611).

7. The automatic surface water monitoring system according to claim 5, characterized in that, When the turbidity of the sampled water detected by the sensor unit in the five-parameter pool (41) is less than or equal to 200 NTU, the sedimentation time of the sampled water in the first sedimentation pool (31) and the second sedimentation pool (32) is the same, and the water in the first sedimentation pool (31) is transported to the total phosphorus measurement unit (61).

8. The automatic surface water monitoring system according to claim 5, characterized in that, When the turbidity of the sampled water detected by the sensor unit in the five-parameter pool (41) is greater than 200 NTU, the sedimentation time of the sampled water in the first sedimentation pool (31) is less than the sedimentation time of the sampled water in the second sedimentation pool (32), and the sampled water in the second sedimentation pool (32) is transported to the total phosphorus measurement unit (61).

9. The automatic surface water monitoring system according to claim 8, characterized in that, The time the sampled water is in the second sedimentation tank (32) is twice the time the sampled water is in the first sedimentation tank (31).

10. The automatic surface water monitoring system according to claim 6, characterized in that, The delivery module (5) includes a second delivery pipe (52) with one end connected to the second sedimentation tank (32), a first delivery pipe (51) with one end connected to the first sedimentation tank (31) and the other end connected to the second delivery pipe (52), a sample pump (53) installed on the second delivery pipe (52), a first control valve (54) installed on the first delivery pipe (51) and the second delivery pipe (52), and multiple sample injection branch pipes (55) connected to the second delivery pipe (52). The first control valve (54) is located at the water inlet end of the sample pump (53). Multiple sample injection tubes (55) are respectively connected to the total phosphorus measurement unit (61), permanganate measurement unit (62), ammonia nitrogen measurement unit (63) and total nitrogen measurement unit (64). The sample injection tube (55) connected to the total phosphorus measurement unit (61) is provided with a first total phosphorus control valve (551) and a second total phosphorus control valve (552). The second delivery pipe (52) is also provided with a filter branch pipe module (56) and a branch pipe control valve (57). The filter branch pipe module (56) is located between the sample pump (53) and the sample branch pipe (55), and the branch pipe control valve (57) is located between the two connection points of the filter branch pipe module (56) and the second delivery pipe (52). The filter branch module (56) includes a first branch (561) connected to the second delivery pipe (52) at both ends, a first filter (562) and a second filter (563) installed on the first branch (561), a second branch (564) connected to the second delivery pipe (52) at one end and connected to the first branch (561) at the other end, a second control valve (565) installed on the first branch (561), and a third control valve (566) installed on the second branch (564). The second branch pipe (564) is located between the first filter (562) and the second filter (563), and the second control valve (565) is located at the outlet end of the second filter (563); The branch control valve (57) is located between the connection between the first branch pipe (561) and the second delivery pipe (52) and between the connection between the second branch pipe (564) and the second delivery pipe (52).

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