An intelligent multi-parameter water quality sampling, detection and analysis system

Abstract

The present invention discloses an intelligent multi-parameter water quality sampling and detection analysis system, which relates to the technical field of sewage detection. It includes a sampling unit, a water quality detection unit, a communication unit, and a power supply unit. The sampling unit is used to collect water samples and transport them to the water quality detection unit. The water quality detection unit is used to detect the water quality of the water samples, and the results are sent to the host computer through the communication unit. The water quality detection unit includes a suspended solids unit for testing the concentration of suspended particles in the water samples. The suspended solids unit includes a pretreatment component, a monitoring component, a cleaning component, a calibration component, and a standard solvent component. The present invention can improve the accuracy and reliability of the detection of the concentration of suspended particles in water samples. The present invention realizes the high-precision detection of the concentration of suspended particles in water samples.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage detection, and particularly relates to a multi-parameter intelligent sampling and detection analysis system for water quality. Background Art

[0002] In the field of water quality monitoring, accurate detection of the concentration of suspended particles in water samples is crucial. Traditional detection methods are often affected by many factors such as fluctuations in the performance of electrode plate groups, interference from water sample impurities, and unstable detection environments, making it difficult to meet the increasingly demanding water quality analysis requirements. For example, when sampling and detecting in some complex water areas, problems such as impurity impact caused by rapid water flow and electrode induction deviation caused by complex water body components occur frequently, and there is an urgent need for a more accurate and stable detection system. Summary of the Invention

[0003] In view of the deficiencies of the above-mentioned prior art, the present invention provides a multi-parameter intelligent sampling and detection analysis system for water quality, which realizes high-precision detection of the concentration of suspended particles in water samples. Starting from eliminating measurement errors of electrode plate groups, stabilizing the detection environment, and avoiding interference from water sample impurities, etc., it comprehensively ensures that the detection data can truly reflect the water quality situation and assist in scientific decision-making.

[0004] The specific technical solutions are as follows:

[0005] A multi-parameter intelligent sampling and detection analysis system for water quality includes a sampling unit, a water quality detection unit, a communication unit, and a power supply unit. The sampling unit is used to collect water samples and transport them to the water quality detection unit. The water quality detection unit is used to detect the water quality of the water samples, and the results are sent to the upper computer through the communication unit. The water quality detection unit includes a suspended matter unit for testing the concentration of suspended particles in the water samples;

[0006] The suspended matter unit includes a pretreatment component, a monitoring component, a cleaning component, a calibration component, and a standard solvent component;

[0007] The pretreatment component includes a pretreatment tank and a coarse filter screen. The pretreatment tank is connected to the sampling unit, and a coarse filter screen is provided at the inlet of the pretreatment tank;

[0008] The monitoring component includes a detection tank, a first electrode plate group, and a first drain valve. The first drain valve is arranged at the bottom of the detection tank. The detection tank is connected to the bottom of the pretreatment tank through a first switching valve to form a U-shaped communicating vessel. The first electrode plate group is arranged in the middle of the detection tank to form a capacitive electrode plate channel for the passage of water samples;

[0009] The cleaning component includes a first cleaning brush and a first lifting device. The first cleaning brush is arranged in the detection tank and can be lifted through the first lifting device to clean the first electrode plate group;

[0010] Calibration component, including a filter membrane with a pore size of 1-2μm, a calibration tank, a second electrode plate group, a second switching valve and a second drain valve. The calibration tank is communicated with the pretreatment tank through the second switching valve. The filter membrane is arranged on the pretreatment tank. The second electrode plate group is arranged in the calibration tank. The second drain valve is arranged at the bottom of the calibration tank;

[0011] Standard solvent component, including a solvent tank for containing standard solution. The solvent tank is arranged on the top of the calibration tank and communicated with the calibration tank through a third switching valve;

[0012] Before working, first open the third switching valve to inject the standard solution in the solvent tank into the calibration tank, obtain the standard electrode data, and discharge the tested standard solution through the second drain valve. After starting the suspended solid test, obtain the first electrode data of the first electrode plate group and the second electrode data of the second electrode plate group respectively. Obtain the first calibration coefficient according to the second electrode data and the standard electrode data, calibrate the first electrode data, and send it to the upper computer through the communication unit.

[0013] In the above solution, further, the calibrated first electrode data is where E 标 is the standard electrode data, E1 is the first electrode data, and E2 is the second electrode data.

[0014] In the above solution, further, a copper sheet is arranged between the calibration tank and the detection tank. The copper sheet extends into the calibration tank and the detection tank respectively and is vertically arranged with the second electrode plate group.

[0015] In the above solution, further, a drain port is arranged at the bottom of the pretreatment tank.

[0016] In the above solution, further, the detection tank is in an inner-small and outer-large V-shaped structure up and down corresponding to the first electrode plate group.

[0017] In the above solution, further, the standard solution is pure water or distilled water.

[0018] In the above solution, further, a magnetic stirring structure is arranged at the bottom of the pretreatment tank.

[0019] In the above solution, further, a color sensor is arranged on the side wall of the detection tank to determine whether there is an influence of organic matter according to the color sensor.

[0020] In the above solution, further, the cleaning component includes a second cleaning brush and a rotating motor. The second cleaning brush is arranged at the filter membrane where the pretreatment tank is communicated with the calibration tank, and the second cleaning brush is driven by the rotating motor to form a reciprocating cyclic cleaning of the filter membrane.

[0021] In the above solution, further, the first cleaning brush is made of antibacterial sponge material.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] The present invention greatly improves the accuracy and reliability of water quality monitoring. On the one hand, through the setting of detection tanks and calibration tanks, etc., measurement errors are reduced, making the data of the electrode plate group more stable and accurate; the electromagnetic environment of the detection tank and calibration tank is balanced by copper sheets. On the other hand, structures such as cleaning components and magnetic stirring ensure the continuous and stable operation of the system, extend the service life of key components, reduce maintenance costs, and overall provide a solid data basis for subsequent water quality analysis and environmental assessment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a functional module block diagram of the present invention;

[0025] Figure 2 is a schematic diagram of the functional module of the suspended matter unit.

[0026] In the drawings, 1 - sampling unit, 2 - water quality detection unit, 3 - communication unit, 4 - host computer, 5 - power supply unit, 6 - pretreatment component, 7 - drain port, 8 - calibration tank, 9 - detection tank, 10 - first electrode plate group, 11 - first switching valve, 12 - first switching valve, 13 - filter membrane, 14 - magnetic stirring structure, 15 - second electrode plate group, 16 - first drain valve, 17 - solvent tank, 18 - third switching valve, 19 - second drain valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following further describes the embodiments of the invention in detail with reference to the drawings of the specification, so as to more clearly present the purpose, technical solution and technical effect of the present invention.

[0028] As Figure 1-2 shown, the present invention discloses a multi-parameter intelligent sampling and detection analysis system for water quality, including a sampling unit 1, a water quality detection unit 2, a communication unit 3 and a power supply unit 5. The sampling unit 1 is used to collect water samples and transport them to the water quality detection unit 2. The water quality detection unit 2 is used to detect the water quality of the water samples, and the results are sent to the host computer 4 through the communication unit 3; the water quality detection unit 2 includes a suspended matter unit for testing the concentration of suspended particles in the water samples.

[0029] The suspended matter unit includes a certain pretreatment component, a monitoring component, a cleaning component, a calibration component and a standard solvent component.

[0030] A certain pretreatment component includes a treatment tank and a coarse filter screen; the treatment tank is connected to the sampling unit 1, and a coarse filter screen is provided at its inlet; a drain port 7 is provided at the bottom of the treatment tank, and the drain port 7 is also equipped with a valve. A magnetic stirring structure 14 is provided at the bottom of the treatment tank, which greatly improves the pretreatment effect, makes the water sample entering the subsequent detection link more uniform and stable, reduces the detection error caused by uneven water samples, and improves the adaptability of the entire system to different water quality samples.

[0031] The monitoring component includes a detection tank 9, a first electrode plate group 10, and a first drain valve 16. The first drain valve 16 is located at the bottom of the detection tank 9. The detection tank 9 is connected to the bottom of the above-mentioned treatment tank through a first switching valve 11 to form a U-shaped communicating vessel. The first electrode plate group 10 is placed in the middle of the detection tank 9 to form a capacitance electrode plate channel for the passage of the water sample.

[0032] The cleaning component includes a first cleaning brush and a first lifting device. The first cleaning brush is placed in the detection tank 9 and can be lifted through the first lifting device to clean the first electrode plate group 10. Among them, the first cleaning brush is made of antibacterial sponge material, which prevents the growth of bacteria during the cleaning process of the electrode plate group, avoids bacteria adhering to the electrode plate group or the inner wall of the detection tank 9, and further pollutes the subsequent water sample and affects the detection result. The first lifting device is an electric telescopic rod, and the first cleaning brush is a sponge sheet. The first lifting device is used to extend the first cleaning brush between the first electrode plate groups 10 for cleaning, and the first lifting device is arranged on the top of the detection tank 9.

[0033] The calibration component includes a filter membrane 13 with a pore size of 1-2 μm, a calibration tank 8, a second electrode plate group 15, a second switching valve 12, and a second drain valve 19. The calibration tank 8 is connected to the above-mentioned treatment tank through the second switching valve 12. The filter membrane 13 is arranged on the treatment tank. The second electrode plate group 15 is arranged in the calibration tank 8, and the second drain valve 19 is arranged at the bottom of the calibration tank 8. Here, the filter membrane 13 is mainly used to filter out suspended particles, so as to obtain the background value of the water sample without suspended particles for adjusting the value of the first electrode plate group 10.

[0034] The standard solvent component includes a solvent tank 17 for containing the standard solution. The solvent tank 17 is arranged on the top of the calibration tank 8 and is connected to the calibration tank 8 through a third switching valve 18. The standard solution is pure water or distilled water.

[0035] Before working, first open the third switching valve 18 to inject the standard solution in the solvent tank 17 into the calibration tank 8, obtain the standard electrode data, and discharge the tested standard solution through the second drain valve 19. After starting the suspended solid test, obtain the first electrode data of the first electrode plate group 10 and the second electrode data of the second electrode plate group 15 respectively. Obtain the first calibration coefficient according to the second electrode data of the second electrode plate group 15 and the standard electrode data, calibrate the first electrode data of the first electrode plate group 10, and send it to the host computer 4 through the communication unit 3.

[0036] After calibration, the first electrode data is where E 标 is the standard electrode data, E1 is the first electrode data, and E2 is the second electrode data. This makes the suspended solid concentration data finally sent to the host computer 4 more accurate and reliable, provides a solid data basis for subsequent water quality analysis, environmental assessment and other work, and improves the accuracy of the whole system for water quality monitoring.

[0037] In order to utilize the good electrical conductivity and stability of the copper sheet to construct a stable electric field environment and assist the electrode plate group to more accurately sense the charged particles in the water sample, especially during the calibration and detection processes, to improve the stability and accuracy of the signal. There is a copper sheet between the calibration tank 8 and the detection tank 9. The copper sheet extends into the calibration tank 8 and the detection tank 9 respectively and is vertically arranged with the second electrode plate group 15.

[0038] In order to guide the water sample to form a stable and uniform flow field when passing through the first electrode plate group 10, ensure that the electrode plate group can fully and evenly contact the water sample, and accurately capture the capacitance change brought by the suspended particles; the detection tank 9 has an inner-small and outer-large V-shaped structure up and down corresponding to the first electrode plate group 10.

[0039] In order to monitor the organic impurities that may exist in the water sample in real time, these organic matters may interfere with the detection of the suspended particle concentration by the electrode plate group, give early warnings and assist in judging the reliability of the detection results. A color sensor is provided on the side wall of the detection tank 9 to determine whether there is an organic matter influence according to the color sensor. This enables the operator to know in time the interference of the water sample by organic matters, retest the data, avoid drawing wrong conclusions about the suspended solid concentration due to organic matter interference, and improve the intelligence and accuracy of the system detection.

[0040] Further, in the above solution, the cleaning component includes a second cleaning brush and a rotating motor. The second cleaning brush is arranged at the filter membrane 13 where the processing tank communicates with the calibration tank 8, and the second cleaning brush is driven by the rotating motor to form a reciprocating cyclic cleaning of the filter membrane 13. The second cleaning brush and the rotating motor can keep the filter membrane 13 always in good filtering performance, and the detection environment in the calibration tank 8 is stable and reliable. Whether it is the calibration of the standard solution or the detection of the actual water sample, it can operate stably, extend the service life of the filter membrane 13, and reduce the maintenance cost.

[0041] After the sampling unit 1 of the present invention collects the water sample, it is roughly filtered by the above-mentioned processing tank to remove large particle impurities, and the water sample is made uniform by magnetic stirring. During detection, the processing tank is communicated with the detection tank 9 through a U-shaped connector, and the water sample can flow smoothly through the first electrode plate group 10, and the change in its capacitance reflects the suspended particle concentration. At the same time, the second electrode plate group 15 assists in calibration in the calibration tank 8, and standard electrode data is obtained by using a pure water or distilled water standard solution, and the deviation is corrected by comparing the actual water sample detection data. Each structure cooperates to ensure accurate measurement. Here, obtaining the standard electrode data by using a pure water or distilled water standard solution can be carried out at intervals. That is, it remains unchanged within a certain period of time, while other values are based on the actual values of the measurement data.

[0042] The specific steps are as follows:

[0043] (1) Confirm that the first switching valve 11, the second switching valve 12, and the third switching valve 18 are closed, and open the second drain valve 19 to ensure that the calibration tank 8 is in an empty tank state.

[0044] (2) Open the third switching valve 18 to fill the calibration tank 8 with a standard solution, specifically pure water; obtain the standard electrode data.

[0045] (3) Close the third switching valve 18 and open the second drain valve 19 to make the calibration tank 8 in an empty tank state.

[0046] (4) Start a certain pretreatment component to make the corresponding processing tank inject the latest water sample.

[0047] (5) Open the magnetic stirring structure 14 and start it for 3 - 5 s. After waiting for 10 s - 15 s to stand still, open the first switching valve 11 and the second switching valve 12.

[0048] (6) Obtain the first electrode data of the first electrode plate group 10 and the second electrode data of the second electrode plate group 15.

[0049] (7) Obtain the first calibration coefficient according to the second electrode data of the second electrode plate group 15 and the standard electrode data, calibrate the first electrode data of the first electrode plate group 10, and send it to the upper computer 4 through the communication unit 3.

[0050] (8) Close the first switching valve 11 and the second switching valve 12, start the cleaning component for cleaning, and open the first drain valve 16 and the second drain valve 19 after completion.

[0051] In the water quality monitoring of urban drinking water sources, water samples are collected regularly every day. Large particles such as sediment are effectively removed through a certain pretreatment component, and magnetic stirring ensures the uniformity of the water sample composition. The detection tank 9 accurately captures the suspended particle concentration. Once the color sensor detects organic matter interference, it will promptly warn the staff. The cleaning component regularly maintains the key components to ensure long-term stable monitoring, provides accurate data for the water quality safety of the water source area, and ensures the health of residents' water use.

[0052] The above are only the preferred and feasible embodiments of the present invention, and are not used to limit the scope of the patent application of the present invention. Any equivalent changes, equivalent substitutions, or modified changes completed within the technical spirit and principles disclosed by the present invention shall be included within the scope of patent protection covered by the present invention.

Claims

1. A water quality multi-parameter intelligent sampling and detection analysis system, comprising a sampling unit, a water quality detection unit, a communication unit and a power supply unit, wherein the sampling unit is used to collect water samples and transport them to the water quality detection unit, and the water quality detection unit is used to perform water quality detection on the water samples, and the results are sent to a host computer through the communication unit; characterized in that: The water quality testing unit includes a suspended matter unit for testing the concentration of suspended particles in the water sample; The suspended matter unit includes a pretreatment component, a monitoring component, a cleaning component, a calibration component and a standard solvent component; The pretreatment component includes a pretreatment tank and a coarse filter; the pretreatment tank is connected to the sampling unit, and a coarse filter is provided at the inlet of the pretreatment tank; The monitoring assembly includes a detection tank, a first electrode sheet group and a first drain valve, the first drain valve is arranged at the bottom of the detection tank, the detection tank is connected with the bottom of the pretreatment tank through a first switch valve to form a U-connector, and the first electrode sheet group is arranged in the middle of the detection tank to form a capacitor plate channel for the water sample to pass through; The cleaning assembly includes a first cleaning brush and a first lifting device. The first cleaning brush is arranged in the detection tank and can be lifted and lowered by the first lifting device to clean the first electrode sheet group. A calibration component, comprising a filter membrane with a pore size of 1-2 μm, a calibration tank, a second electrode sheet group, a second switch valve and a second drain valve, wherein the calibration tank is connected to the pretreatment tank through the second switch valve, the filter membrane is arranged on the pretreatment tank, a second electrode sheet group is arranged in the calibration tank, and a second drain valve is arranged at the bottom of the calibration tank; A standard solvent assembly, comprising a solvent tank for containing a standard solution, wherein the solvent tank is arranged on the top of the calibration tank and is connected to the calibration tank through a third switch valve; Before work, open the third switch valve to inject the standard solution in the solvent tank into the calibration tank, obtain the standard electrode data, and discharge the tested standard solution through the second drain valve; after starting the suspended matter test, obtain the first electrode data of the first electrode sheet group and the second electrode data of the second electrode sheet group respectively, obtain the first calibration coefficient according to the second electrode data and the standard electrode data, calibrate the first electrode data, and send it to the host computer through the communication unit.

2. A water quality multi-parameter intelligent sampling and detection analysis system according to claim 1, characterized in that: The first electrode data is corrected as follows: Where E 标 is the standard electrode data, E1 is the first electrode data, and E2 is the second electrode data.

3. The water quality multi-parameter intelligent sampling and detection analysis system according to claim 1 is characterized by: A copper sheet is arranged between the calibration tank and the detection tank. The copper sheets extend into the calibration tank and the detection tank respectively and are arranged perpendicular to the second electrode sheet group.

4. The water quality multi-parameter intelligent sampling and detection analysis system according to claim 1 is characterized by: A drain port is provided at the bottom of the pretreatment tank.

5. The water quality multi-parameter intelligent sampling and detection analysis system according to claim 1 is characterized by: The detection tank is in a V-shaped structure with a small inside and a large outside at the upper and lower parts corresponding to the first electrode sheet group.

6. The water quality multi-parameter intelligent sampling and detection analysis system according to claim 1 is characterized by: The standard solution is purified water or distilled water.

7. The water quality multi-parameter intelligent sampling and detection analysis system according to claim 1 is characterized by: A magnetic stirring structure is provided at the bottom of the pretreatment tank.

8. The water quality multi-parameter intelligent sampling and detection analysis system according to claim 1 is characterized by: The side wall of the detection tank is provided with a color sensor, and whether there is organic matter influence is determined according to the color sensor.

9. The water quality multi-parameter intelligent sampling and detection analysis system according to claim 1, characterized in that: The cleaning assembly includes a second cleaning brush and a rotating motor. The second cleaning brush is arranged on the filter membrane of the pretreatment tank connected to the calibration tank, and the second cleaning brush is driven by the rotating motor to form a reciprocating cycle cleaning of the filter membrane.

10. The water quality multi-parameter intelligent sampling and detection analysis system according to claim 1, characterized in that: The first cleaning brush is made of antibacterial sponge material.

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