A method for detecting water quality in water conservancy projects

Abstract

The invention discloses a method for detecting water quality for water conservancy projects, comprising the following steps: S1, fixed-point sampling; S11, selecting sampling points: selecting representative sampling points according to the flow direction and purpose of the water body and the distribution of possible pollution sources; S12, sampling selection: using sampling equipment to sample the water source at the sampling point to ensure the representativeness of the sample and avoid pollution, and the sampling position includes the collection of surface water and bottom water; S2, transportation and preservation: ensuring that the collected water samples maintain their original state before analysis, and adopting anti-pollution, anti-light and constant temperature preservation measures; S3, experimental analysis: performing physical index analysis, chemical index analysis and biological index analysis on the collected water samples according to the needs of the experiment; S4, data coordination and analysis; when the invention is capable of detecting the transparency of the water sample, the transparency of the water quality is comprehensively evaluated by two factors, namely the color of the water body and the concentration of suspended matter, so as to ensure the comprehensiveness and accuracy of the water quality detection.

Description

Technical Field

[0001] The invention relates to the technical field of water quality detection, and in particular to a method for detecting water quality in a water conservancy project. Background Art

[0002] With the rapid development of industrialization and urbanization, the protection and management of water resources have become increasingly important. As an important part of water resources management, water conservancy projects not only involve the distribution and utilization of water, but also undertake the important task of ensuring water quality safety. These projects include dams, reservoirs and irrigation systems, and their main goal is to ensure the effective use of water resources and the safety of water quality.

[0003] Chinese patent (Announcement No.: CN116381172A), the scheme specifically includes a main component, including a base, a detection box, a mobile device, a water pump, a conduit and an adjusting device, the detection box is fixed to the top of the base, the mobile device is fixed to the bottom of the base, the water pump is fixed to the top of the detection box, the conduit is arranged on one side of the water pump, and the adjusting device is arranged on one side of the base; and the detection component is arranged on the main component, including a detection part, an adjusting part, a driving part, a limiting part and a blocking part, the detection part is arranged in the detection box, the adjusting part is arranged in the detection box, and the driving part is arranged on one side of the adjusting part. The beneficial effects of the present invention are: through the setting of the detection part, the samples can be grouped, thereby improving the accuracy of the detection, and through the setting of the adjusting part, it is convenient to detect different samples.

[0004] In current water conservancy projects, the determination of water transparency is an important evaluation indicator to ensure water quality safety and meet environmental protection standards. However, traditional water quality testing methods face significant technical challenges in evaluating water sample transparency. In particular, water transparency is affected by many factors, among which the color of the water body and the concentration of suspended matter are the decisive factors. The color may be caused by dissolved organic matter and inorganic matter (such as iron and manganese oxides), while the suspended matter includes particles such as silt, algae, and microorganisms.

[0005] The prior art usually uses optical methods to measure color or turbidity separately to indirectly evaluate transparency, but these methods fail to fully capture the combined impact of color and suspended matter on transparency. This separate measurement method limits the accuracy of the evaluation because suspended particles and chromaticity components in the water body may interact with each other and affect the absorption and scattering characteristics of light. When the water quality detection device in the above patent detects the transparency of water samples, since the transparency of water quality is usually determined by the color of the water body and the concentration of suspended matter, it is difficult to comprehensively evaluate the transparency of water quality through these two factors. Therefore, a water quality detection method for water conservancy projects is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a water quality detection method for water conservancy projects, which has the advantage of comprehensively evaluating the transparency of water quality and solves the problem that it is difficult to comprehensively evaluate the transparency of water quality by the color of the water body and the concentration of suspended matter.

[0007] To achieve the above object, the present invention provides the following technical solution: a method for detecting water quality for water conservancy projects, comprising the following steps:

[0008] S1. Fixed-point sampling:

[0009] S11. Select sampling points: Select representative sampling points based on the flow direction and use of the water body and the distribution of possible pollution sources;

[0010] S12. Sampling selection: Use sampling equipment to sample water sources at sampling points to ensure representativeness of samples and avoid contamination. The sampling locations include surface water and bottom water.

[0011] S2. Transportation and storage: Ensure that the collected water samples remain in their original state before analysis, adopt anti-pollution, light-proof and constant temperature storage measures, use professional transportation containers and conditions to ensure that the samples are not contaminated or deteriorated during transportation;

[0012] S3. Experimental analysis: According to the experimental requirements, the collected water samples are analyzed for physical indicators, chemical indicators and biological indicators;

[0013] S4. Data coordination and analysis:

[0014] S41. Data recording: record all test data in detail, establish a database, conduct statistical and comparative analysis on the collected data, evaluate water quality and compare it with historical data or standards;

[0015] S42. Report preparation: Prepare a detailed water quality report based on the analysis results, including data interpretation, assessment results, and necessary recommendations and measures;

[0016] S43. Tracking and adjustment: Adjust water quality management measures based on the results of the water quality report, and adjust the monitoring plan and frequency based on actual conditions and monitoring results to improve the effectiveness and efficiency of testing.

[0017] Preferably, a method for detecting water quality in a water conservancy project comprises a measuring frame for analyzing physical indicators of a water sample, and a sensor module arranged on the measuring frame, wherein a pump body for supplying and discharging water samples is arranged on the measuring frame, and the physical indicator analysis process of the water sample in S3 comprises the following steps:

[0018] S31, full-item detection: placing the collected water sample in a measuring frame, performing an initial detection on the water sample in the measuring frame through a sensor module, and calculating a statistical transparency value through a full-item determination algorithm formula;

[0019] S32, sub-item detection: Filter out the suspended matter in the measurement frame, use the sensor module to perform a secondary test on the filtered water sample, and calculate the sub-item transparency value through a one-way measurement algorithm formula;

[0020] S33. Combined analysis: Combine the statistical transparency value and the calculated transparency value, and use the comprehensive evaluation algorithm formula to calculate the water sample transparency evaluation value.

[0021] Preferably, the full-item determination algorithm formula is specifically: ,in:

[0022] : It is expressed as the statistical transparency value in the preliminary test;

[0023] : represents the i-th measurement data in the preliminary detection;

[0024] : Indicates the total number of measurement data.

[0025] Preferably, the measuring frame is provided with a fixed structure for filtering out suspended matter in the water sample and changing the detection position of the sensor module;

[0026] The fixed item structure includes a left-facing convex portion and a right-facing convex portion integrally formed on the measuring frame, the left-facing convex portion is provided with a mounting plate for supporting the sensor module, and the left-facing convex portion is provided with a vertical slot for the mounting plate to be slidably connected in a vertical direction, the measuring frame is fixedly connected with a base column, and the base column is provided with an intermediary component for driving the mounting plate to rise and fall;

[0027] The measuring frame is provided with a rectangular frame, which includes an integrally formed inner arc portion corresponding to the left convex portion, a filter membrane is fixedly connected to the rectangular frame, and a filtering component for driving the filter membrane to move freely in the vertical direction is provided on the right convex portion.

[0028] Preferably, the inter-moving assembly comprises an arc-shaped directional plate fixedly connected to the base column, the arc-shaped directional plate is provided with a lifting seat driven by an electric push rod to freely rise and fall, and the arc-shaped directional plate is provided with a slot body for sliding connection of the lifting seat;

[0029] The base column is slidably penetrated by a top column, a positioning pin is fixedly connected to the side of the lifting seat facing the top column, and a spiral positioning groove for sliding connection of the lifting seat is provided on the top column;

[0030] The top column is fixedly connected with a hollow extension column on one side of the measuring frame. The hollow extension column slides through the side wall of the measuring frame and rotates on a mounting plate with a fixed axis. A rectangular groove for accommodating and fixing the sensor module is provided on the mounting plate.

[0031] Preferably, the one-way determination algorithm formula is specifically: ,in:

[0032] : It is expressed as the score transparency value in the secondary test;

[0033] : represents secondary detection data;

[0034] : It is expressed as a correction factor used to offset the influence of suspended matter;

[0035] : Represents the total number of secondary detection data.

[0036] Preferably, the filtering assembly includes a positioning cylinder that rotates on a fixed axis on the right-facing convex portion, a rectangular frame is fixedly connected to a positioning column on the side of the positioning cylinder, a clearance groove for the positioning column to slide vertically is provided on the measuring frame, and a spiral positioning groove for the positioning column to slide and connect is provided on the positioning cylinder.

[0037] Preferably, the filtering assembly further comprises a side protrusion fixedly connected to the top column, an upper annular resistance groove and a lower annular resistance groove are provided on the base column for horizontal rotation of the side protrusion, and a limiting groove is provided on the base column for vertical sliding of the side protrusion, and the two ends of the limiting groove respectively penetrate the upper annular resistance groove and the lower annular resistance groove;

[0038] A spline shaft that is in transmission connection with the positioning cylinder is fixedly rotated on the measuring frame, and a spline groove for vertical sliding of the hollow extension column is provided on the top column and the hollow extension column.

[0039] Preferably, the comprehensive evaluation algorithm formula is specifically: ,in, Expressed as a water clarity assessment value, and Both are weight coefficients, which are used to balance the importance of the initial test and the secondary test results.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] 1. When the transparency of water samples is detected, the present invention can comprehensively evaluate the transparency of water quality through two factors: the color of the water body and the concentration of suspended matter, thereby ensuring the comprehensiveness and accuracy of water quality detection.

[0042] 2. The present invention ensures the flexibility and accuracy of the detection process by setting a fixed-item structure and changing the detection height. Multiple detections at different water level heights can reduce the errors that may occur at a single measuring point and ensure the reliability and representativeness of the results. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the steps of a method for detecting water quality for a water conservancy project according to the present invention;

[0044] Figure 2 It is a schematic diagram of the components where the measuring frame of the present invention is located;

[0045] Figure 3 This is a schematic diagram of the components where the filter membrane of the present invention is located;

[0046] Figure 4 This is a schematic diagram of the components where the position adjustment cylinder of the present invention is located;

[0047] Figure 5 This is a schematic diagram of the components where the mounting plate of the present invention is located;

[0048] Figure 6 This is a schematic diagram of the components where the lifting seat of the present invention is located;

[0049] Figure 7 This is a schematic diagram of the components where the top column of the present invention is located;

[0050] Figure 8 This is a schematic diagram of the components where the limit grooves of the present invention are located;

[0051] Fig. 9 This is a schematic diagram of the position of the make way slot of the present invention.

[0052] In the figure: 1. measuring frame; 2. left-facing convex portion; 3. right-facing convex portion; 4. rectangular frame; 401. inner arc portion; 5. filter membrane; 6. sensor module; 7. top column; 8. arc-shaped directional plate; 9. lifting seat; 10. positioning pin; 11. spiral positioning groove; 12. hollow extension column; 13. spline shaft; 14. side protrusion; 15. base column; 16. spline groove; 17. upper annular resistance groove; 18. lower annular resistance groove; 19. limiting groove; 20. mounting plate; 21. adjusting cylinder; 22. isotropic column; 23. spiral isotropic groove; 24. clearance groove. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] See also Figures 1 to 9 The present invention provides a technical solution: a method for detecting water quality for a water conservancy project, comprising the following steps:

[0055] S1. Fixed-point sampling:

[0056] S11. Select sampling points: Select representative sampling points based on the flow direction and use of the water body and the distribution of possible pollution sources;

[0057] S12. Sampling selection: Use sampling equipment to sample water sources at sampling points to ensure representativeness of samples and avoid contamination. The sampling locations include surface water and bottom water.

[0058] S2. Transportation and storage: Ensure that the collected water samples remain in their original state before analysis, adopt anti-pollution, light-proof and constant temperature storage measures, use professional transportation containers and conditions to ensure that the samples are not contaminated or deteriorated during transportation;

[0059] S3. Experimental analysis: According to the experimental requirements, the collected water samples are analyzed for physical indicators, chemical indicators and biological indicators;

[0060] S4. Data coordination and analysis:

[0061] S41. Data recording: record all test data in detail, establish a database, conduct statistical and comparative analysis on the collected data, evaluate water quality and compare it with historical data or standards;

[0062] S42. Report preparation: Prepare a detailed water quality report based on the analysis results, including data interpretation, assessment results, and necessary recommendations and measures;

[0063] S43. Tracking and adjustment: Adjust water quality management measures based on the results of the water quality report, and adjust the monitoring plan and frequency based on actual conditions and monitoring results to improve the effectiveness and efficiency of testing.

[0064] like Figure 1 As shown, the sampling points are precisely located according to the flow direction, use and possible pollution sources of the water body, ensuring that the data obtained is highly representative and reliable. The use of professional sampling equipment to collect surface and bottom water not only reduces the risk of external contamination of the samples, but also maintains the original physical and chemical properties of the samples, providing a basis for accurate assessment of the water body status;

[0065] The collected water samples are properly preserved through anti-pollution, light protection and constant temperature measures, and professional transport containers are used to maintain the sample status during transportation to prevent chemical deterioration or biological degradation. Strict control of this process is the key to ensuring the accuracy of sample analysis and avoiding data errors caused by sample deterioration.

[0066] The collected water samples will be analyzed for physical indicators, chemical indicators and biological indicators respectively. This multi-dimensional detection method can comprehensively evaluate the water quality status, accurately identify various pollutants and biological hazards, and provide a scientific basis for water quality management and pollution control.

[0067] All test data are recorded in detail and a database is established to facilitate statistical and comparative analysis of the collected data, evaluate water quality conditions and compare them with historical data or standards. The detailed water quality report compiled based on the analysis results not only provides data interpretation and evaluation results, but also includes necessary suggestions and measures, which facilitates non-professionals to understand water quality conditions. Based on the feedback from the report results, water quality management measures and monitoring plans are adjusted accordingly to improve the effectiveness and efficiency of testing, ensure that water quality management can respond to environmental changes in real time, and thus improve the timeliness and effectiveness of management.

[0068] Further, it includes a measuring frame 1 for analyzing the physical index of the water sample, and a sensor module 6 arranged on the measuring frame 1, and a pump body for the water sample to enter and exit is provided on the measuring frame 1, characterized in that: the physical index analysis process of the water sample in S3 includes the following steps:

[0069] S31, full-item detection: the collected water sample is placed in the measurement frame 1, the water sample in the measurement frame 1 is initially detected by the sensor module 6, and the statistical transparency value is calculated by the full-item measurement algorithm formula;

[0070] S32, sub-item detection: Filter out the suspended matter in the measuring frame 1, use the sensor module 6 to perform a secondary detection on the filtered water sample, and calculate the sub-item transparency value through a one-way measurement algorithm formula;

[0071] S33. Combined analysis: Combine the statistical transparency value and the calculated transparency value, and use the comprehensive evaluation algorithm formula to calculate the water sample transparency evaluation value.

[0072] like Figures 1 to 9 As shown, at this stage, the collected water sample is placed in a measuring frame 1, which is equipped with a pump body for supplying water samples in and out, ensuring that the sample can flow evenly in the equipment for uniform detection. The sensor module 6 performs an initial comprehensive detection on the water sample in the measuring frame 1, and uses a full-item measurement algorithm to calculate a preliminary statistical transparency value of the water sample. The core of this step is to obtain the basic transparency data of the water sample, laying the foundation for subsequent more detailed analysis.

[0073] After the preliminary full-item test, the suspended matter in the measuring frame 1 is effectively filtered out. At this time, the sensor module 6 performs a secondary test on the water sample from which the suspended matter has been filtered out. The unidirectional measurement algorithm used in this stage is specifically for clearer water samples, and a more accurate sub-measurement transparency value is calculated. This sub-item test mainly evaluates the change in transparency of the water sample after the suspended matter is removed, thereby providing detailed information about the purity of the water sample.

[0074] The final stage is to combine and analyze the results of the full-item test and the sub-item test. Through a comprehensive evaluation algorithm, combined with the statistical transparency value and the sub-transparency value, a comprehensive water sample transparency evaluation value is calculated. This value is the final assessment of the water sample transparency, which can comprehensively reflect the transparency status of the water quality and provide scientific data support for the water quality management of water conservancy projects.

[0075] The full-item determination algorithm formula is specifically: ,in:

[0076] : It is expressed as the statistical transparency value in the preliminary test;

[0077] : represents the i-th measurement data in the preliminary detection;

[0078] : Indicates the total number of measurement data.

[0079] In one of the more preferred embodiments, the measuring frame 1 is provided with a fixed structure for filtering out suspended matter in the water sample and changing the detection position of the sensor module 6;

[0080] The fixed item structure includes a left-facing convex portion 2 and a right-facing convex portion 3 integrally formed on the measuring frame 1, a mounting plate 20 for supporting the sensor module 6 is provided on the left-facing convex portion 2, and a vertical slot for the mounting plate 20 to be slidably connected in a vertical direction is opened on the left-facing convex portion 2, a base column 15 is fixedly connected to the measuring frame 1, and an intermittent component for driving the mounting plate 20 to rise and fall is provided on the base column 15;

[0081] The measuring frame 1 is provided with a rectangular frame 4, which includes an integrally formed inner arc portion 401 corresponding to the left convex portion 2, a filter membrane 5 is fixedly connected to the rectangular frame 4, and a filtering component is provided on the right convex portion 3 to drive the filter membrane 5 to move freely in the vertical direction.

[0082] like Figure 2 and Figure 3As shown, when testing water samples, multiple collected water samples are placed in the measuring frame 1. During the initial test, driven by the intermittent motion component, the mounting plate 20 and the sensor module 6 arranged thereon are driven to move synchronously in the vertical direction, thereby changing the relative position of the sensor module 6 in the measuring frame 1, so that the measuring frame 1 can perform multiple tests at different heights to improve the detection accuracy and avoid differences in water samples at different heights. The test result is mainly determined by two factors: the color of the water sample and the concentration of suspended matter.

[0083] At the same time, after the initial detection is completed, the rectangular frame 4 and the filter membrane 5 arranged thereon are driven to move from top to bottom through the filtering component, and the suspended matter in the measuring frame 1 can be filtered out during the movement. At this time, the water sample detected by the sensor module 6 during the detection process is the water sample after the suspended matter is removed. Furthermore, in the secondary detection process, the detection result is mainly affected by the color factor of the water sample.

[0084] Through two testing processes and by changing the factor conditions in the two testing processes through the fixed item structure, the transparency of water quality is tested under different conditions, and the transparency of water samples is comprehensively evaluated through the comprehensive evaluation algorithm formula.

[0085] Furthermore, the inter-moving assembly includes an arc-shaped directional plate 8 fixedly connected to the base column 15, and a lifting seat 9 driven by an electric push rod to freely rise and fall is provided on the arc-shaped directional plate 8, and a groove body 1 for sliding connection of the lifting seat 9 is opened on the arc-shaped directional plate 8;

[0086] The base column 15 is slidably penetrated by a top column 7, a positioning pin 10 is fixedly connected to the side of the lifting seat 9 facing the top column 7, and a spiral positioning groove 11 for the lifting seat 9 to be slidably connected is provided on the top column 7;

[0087] The top column 7 is fixedly connected to a hollow extension column 12 on one side of the measuring frame 1 . The hollow extension column 12 slides through the side wall of the measuring frame 1 and rotates on a mounting plate 20 . The mounting plate 20 is provided with a rectangular groove for accommodating and fixing the sensor module 6 .

[0088] like Figure 5-Figure 8 As shown, the lifting seat 9 is driven to move freely in the vertical direction by an electric push rod, wherein the fixed end of the electric push rod is fixedly connected to the measuring frame 1, and the telescopic end of the electric push rod is fixedly connected to the lifting seat 9. Therefore, the lifting seat 9 and the positioning pin 10 arranged thereon can be driven to move freely in the vertical direction by the electric push rod.

[0089] At the same time, when the top column 7 is restricted and cannot rotate, when the lifting seat 9 is free to rise and fall, it can drive the top column 7 and the hollow extension column 12 arranged thereon to rise and fall synchronously, thereby changing the horizontal height of the mounting plate 20 and the sensor module 6 thereon. Therefore, the sensor module 6 can correspond to water samples at different water level heights, thereby improving the detection accuracy by detecting water samples at different water level heights.

[0090] Furthermore, the one-way determination algorithm formula is specifically: ,in:

[0091] : It is expressed as the score transparency value in the secondary test;

[0092] : represents secondary detection data;

[0093] : It is expressed as a correction factor used to offset the influence of suspended matter;

[0094] : Represents the total number of secondary detection data.

[0095] It should be noted that The value of can be obtained through a series of experiments, with primary and secondary tests at different suspended solids concentrations, and then through data analysis, the relationship between the two tests before and after the removal of suspended solids can be found, and the value of For example, the transparency of water samples with known suspended matter concentrations can be measured and fitted. and relationship, and thus determine The value of .

[0096] If there is not enough experimental data, the correction factor It can also be estimated based on experience and scene conditions. For example, if the suspended matter has a greater impact on the transparency of the water sample, then should be higher; on the contrary, if the suspended matter has a smaller impact, The value of will be lower, and the empirical value can be estimated through domain expert knowledge or by comparing reference data in similar environments.

[0097] Furthermore, the filtering assembly includes a positioning cylinder 21 that rotates on the right convex hollow portion 3 with a fixed axis, a rectangular frame 4 is fixedly connected to a side of the positioning cylinder 21 with an alignment column 22, a measuring frame 1 is provided with a clearance groove 24 for the alignment column 22 to slide vertically, and a spiral alignment groove 23 for the alignment column 22 to slide and connect is provided on the positioning cylinder 21;

[0098] The filter assembly also includes a side protrusion 14 fixedly connected to the top column 7, an upper annular resistance groove 17 and a lower annular resistance groove 18 for horizontal rotation of the side protrusion 14 are formed on the base column 15, and a limiting groove 19 for vertical sliding of the side protrusion 14 is also formed on the base column 15, and the two ends of the limiting groove 19 respectively penetrate the upper annular resistance groove 17 and the lower annular resistance groove 18;

[0099] The measuring frame 1 has a spline shaft 13 which is in fixed rotation and is in transmission connection with the positioning cylinder 21 , and the top column 7 and the hollow extension column 12 are provided with a spline groove 16 for the hollow extension column 12 to slide vertically.

[0100] like Figure 4 , Figure 7 , Figure 8 and Fig. 9 As shown, when the lifting seat 9 moves downward, the side protrusion 14 is at the junction of the upper annular blocking groove 17 and the limiting groove 19. Therefore, the top column 7 drives the side protrusion 14 to move downward synchronously with the lifting seat 9, thereby causing the side protrusion 14 to slide on the limiting groove 19.

[0101] At the same time, when the side protrusion 14 follows the top column 7 to descend to the position of the lower annular resistance groove 18, the side protrusion 14 can no longer move downward. As the lifting seat 9 continues to move downward, the positioning pin 10 slides on the spiral positioning groove 11, thereby driving the top column 7 to rotate in the horizontal direction, so as to drive the spline shaft 13 to rotate synchronously in the horizontal direction through the hollow extension column 12.

[0102] Among them, the spline shaft 13 is transmission-connected to the positioning cylinder 21. When the side protrusion 14 is in the lower annular resistance groove 18, the top column 7, the hollow extension column 12 and the mounting plate 20 are at the lowest end of the vertical stroke. At this time, as the top column 7 rotates, the spline shaft 13 is driven to rotate synchronously, and the positioning cylinder 21 transmission-connected to the spline shaft 13 is driven to rotate horizontally.

[0103] At the same time, when the adjusting cylinder 21 rotates, it can drive the isotropic column 22 and the rectangular frame 4 thereon to move in the vertical direction through the spiral isotropic groove 23 opened thereon, so as to utilize the filter membrane 5 to filter out the suspended matter in the water sample. It should be noted that when the top column 7 stops rotating, the side protrusion 14 thereon corresponds to the position of the limiting groove 19. Therefore, when the lifting seat 9 drives the positioning pin 10 to move upward, it can first drive the mounting plate 20 to move upward through the top column 7 and the hollow extension column 12. Subsequently, after the side protrusion 14 is in the position of the limiting groove 19, the top column 7 and the spline shaft 13 are driven to rotate through the upward movement of the lifting seat 9, so as to drive the adjusting cylinder 21 to rotate and drive the rectangular frame 4 and the right-facing protrusion 3 to move upward and restore to the initial height.

[0104] Furthermore, the comprehensive evaluation algorithm formula is specifically as follows: ,in, Expressed as a water clarity assessment value, and Both are weight coefficients, which are used to balance the importance of the initial test and the secondary test results.

[0105] Among them, the weight coefficient and Fitting and optimization can be performed through experimental data. For example, the actual test results obtained through multiple experiments are calculated separately. and Then use linear regression or other fitting methods to determine the optimal weight coefficient so that the final water quality transparency assessment value Closest to real water transparency.

[0106] Among them, the weight coefficient can also be adjusted through optimization algorithms (such as gradient descent, genetic algorithm, etc.). and , to minimize the resulting water quality transparency assessment value The error between the target result and the target result, usually, the weight coefficient and The value range of is between 0 and 1, and and The sum of is 1.

[0107] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for detecting water quality for water conservancy projects, characterized in that: The following steps are involved: S1. Fixed-point sampling: S11. Select sampling points: Select representative sampling points based on the flow direction and use of the water body and the distribution of possible pollution sources; S12. Sampling selection: Use sampling equipment to sample water sources at sampling points to ensure representativeness of samples and avoid contamination. The sampling locations include surface water and bottom water. S2. Transportation and storage: Ensure that the collected water samples remain in their original state before analysis, adopt anti-pollution, light-proof and constant temperature storage measures, use professional transportation containers and conditions to ensure that the samples are not contaminated or deteriorated during transportation; S3. Experimental analysis: According to the experimental requirements, the collected water samples are analyzed for physical indicators, chemical indicators and biological indicators; S4. Data coordination and analysis: S41. Data recording: record all test data in detail, establish a database, conduct statistical and comparative analysis on the collected data, evaluate water quality and compare it with historical data or standards; S42. Report preparation: Prepare a detailed water quality report based on the analysis results, including data interpretation, assessment results, and necessary recommendations and measures; S43. Tracking and adjustment: Adjust water quality management measures based on the results of water quality reports, and adjust monitoring plans and frequencies based on actual conditions and monitoring results to improve the effectiveness and efficiency of testing; The invention comprises a measuring frame (1) for analyzing the physical index of a water sample, and a sensor module (6) arranged on the measuring frame (1), wherein a pump body for supplying and discharging the water sample is provided on the measuring frame (1), and is characterized in that: the process of analyzing the physical index of the water sample in S3 comprises the following steps: S31, full-item detection: placing the collected water sample in the measurement frame (1), performing an initial detection on the water sample in the measurement frame (1) through the sensor module (6), and calculating a statistical transparency value through a full-item measurement algorithm formula; S32, sub-item detection: using the filter assembly to filter out the suspended matter in the measurement frame (1), using the sensor module (6) to perform a secondary detection on the filtered water sample, and calculating the sub-item transparency value through a one-way measurement algorithm formula; S33, combined analysis: combining the statistical transparency value and the sub-transparency value, and calculating the water sample transparency evaluation value through a comprehensive evaluation algorithm formula; The measuring frame (1) is provided with a fixed structure for filtering out suspended matter in the water sample and changing the detection position of the sensor module (6); The fixed item structure comprises a left-facing convex portion (2) and a right-facing convex portion (3) integrally formed on a measuring frame (1); a mounting plate (20) for supporting a sensor module (6) is provided on the left-facing convex portion (2); and a vertical groove body for the mounting plate (20) to be slidably connected in a vertical direction is provided on the left-facing convex portion (2); a base column (15) is fixedly connected to the measuring frame (1); and an intermittent driving component for driving the mounting plate (20) to rise and fall is provided on the base column (15); The inter-motion assembly comprises an arc-shaped directional plate (8) fixedly connected to a base column (15), a lifting seat (9) driven by an electric push rod to freely rise and fall is provided on the arc-shaped directional plate (8), and a groove body for sliding connection of the lifting seat (9) is provided on the arc-shaped directional plate (8); The base column (15) is slidably penetrated by a top column (7), a positioning pin (10) is fixedly connected to a side of the lifting seat (9) facing the top column (7), and a spiral positioning groove (11) for sliding connection of the lifting seat (9) is provided on the top column (7); A hollow extension column (12) is fixedly connected to the side of the top column (7) facing the measuring frame (1); the hollow extension column (12) slides through the side wall of the measuring frame (1) and rotates on a fixed axis on a mounting plate (20); a rectangular groove for accommodating and fixing the sensor module (6) is provided on the mounting plate (20); The filtering assembly comprises a positioning cylinder (21) which rotates on a fixed axis on the right-facing convex hollow portion (3); a rectangular frame (4) is fixedly connected to a positioning column (22) on one side facing the positioning cylinder (21); a positioning groove (24) for the positioning column (22) to slide vertically is provided on the measuring frame (1); and a spiral positioning groove (23) for the positioning column (22) to be slidably connected is provided on the positioning cylinder (21).

2. A method for detecting water quality for water conservancy projects according to claim 1, characterized in that: The full-item determination algorithm formula is specifically: ,in: : It is expressed as the statistical transparency value in the preliminary test; : represents the i-th measurement data in the preliminary detection; : represents the total number of measurement data; The one-way determination algorithm formula is specifically: ,in: : It is expressed as the score transparency value in the secondary test; : represents secondary detection data; : It is expressed as a correction factor used to offset the influence of suspended matter; : Represents the total number of secondary detection data.

3. A method for detecting water quality for water conservancy projects according to claim 2, characterized in that: The filtering assembly further comprises a side protrusion (14) fixedly connected to the top column (7), and the base column (15) is provided with an upper annular resistance groove (17) and a lower annular resistance groove (18) for horizontal rotation of the side protrusion (14).

4. A method for detecting water quality for water conservancy projects according to claim 3, characterized in that: The base column (15) is also provided with a limiting groove (19) for the side protrusion (14) to slide vertically, and the two ends of the limiting groove (19) respectively penetrate the upper annular resistance groove (17) and the lower annular resistance groove (18).

5. A method for detecting water quality for water conservancy projects according to claim 4, characterized in that: The measuring frame (1) has a fixed axis rotatingly provided with a spline shaft (13) which is transmission-connected to the positioning cylinder (21), and the top column (7) and the hollow extension column (12) are provided with a spline groove (16) for the hollow extension column (12) to slide vertically.

6. A method for detecting water quality for water conservancy projects according to claim 5, characterized in that: The comprehensive evaluation algorithm formula is specifically: ,in, Expressed as a water quality transparency assessment value, and Both are weight coefficients, which are used to balance the importance of the initial test and the secondary test results.

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