Water quality multi-parameter intelligent sampling and detection analysis system

Abstract

The invention discloses a water quality multi-parameter intelligent sampling and detection analysis system, and relates to the technical field of sewage detection. Comprising a sampling unit, a water quality detection unit, a communication unit and a power supply unit, the sampling unit is used for collecting a water sample and conveying the water sample to the water quality detection unit, and the water quality detection unit is used for detecting water quality of the water sample and sending a result to an upper computer through the communication unit; the water quality detection unit comprises a suspended matter unit for testing the concentration of suspended particles in a water sample; the suspended matter unit comprises a pretreatment assembly, a monitoring assembly, a cleaning assembly, a proofreading assembly and a standard solvent assembly. According to the invention, the accuracy and reliability of water sample suspended particle concentration detection can be improved. According to the invention, high-precision detection of the concentration of the suspended particles in the water sample is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage detection, and in particular to a water quality multi-parameter intelligent sampling and detection analysis system. 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 the electrode set, interference from impurities in the water sample, and unstable detection environment, making it difficult to meet the increasing demand for water quality analysis. For example, when sampling and testing in some complex waters, problems such as impurity impact caused by turbulent water flow and electrode sensing deviation caused by complex water composition frequently occur, and a more accurate and stable detection system is urgently needed. Summary of the invention

[0003] In view of the shortcomings of the above-mentioned prior art, the present invention provides a water quality multi-parameter intelligent sampling and detection analysis system to achieve high-precision detection of suspended particle concentration in water samples. Starting from eliminating the measurement error of the electrode group, stabilizing the detection environment, and avoiding interference from impurities in water samples, the present invention comprehensively ensures that the detection data can truly reflect the water quality and assist scientific decision-making.

[0004] The specific technical solutions are as follows:

[0005] A water quality multi-parameter intelligent sampling and detection analysis system 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 transmit them to the water quality detection unit. 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. The water quality detection unit includes a suspended matter unit for testing the concentration of suspended particles in the water sample.

[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; the pretreatment tank is connected to the sampling unit, and a coarse filter is provided at the inlet of the pretreatment tank;

[0008] 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;

[0009] 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.

[0010] 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;

[0011] 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;

[0012] 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.

[0013] In the above scheme, the first electrode data is further corrected to 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 scheme, a copper sheet is provided between the calibration tank and the detection tank, and the copper sheet extends into the calibration tank and the detection tank respectively, and is arranged perpendicular to the second electrode sheet group.

[0015] In the above solution, a drain outlet is provided at the bottom of the pretreatment tank.

[0016] In the above scheme, the detection tank is further formed into 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.

[0017] In the above scheme, the standard solution is purified water or distilled water.

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

[0019] In the above solution, a color sensor is provided on the side wall of the detection tank, and whether there is organic influence is determined based on the color sensor.

[0020] In the above scheme, 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 proofreading tank, and the second cleaning brush is driven by the rotating motor to form a reciprocating cycle cleaning of the filter membrane.

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

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention greatly improves the accuracy and reliability of water quality monitoring. On the one hand, the measurement error is reduced through the setting of detection tanks and proofreading tanks, making the electrode sheet group data more stable and accurate; the electromagnetic environment of the detection tank and the proofreading 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 provide a solid data foundation for subsequent water quality analysis and environmental assessment. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0027] The following is a further detailed description of the embodiments of the invention in conjunction with the accompanying drawings to make the objectives, technical solutions and technical effects of the invention more clearly presented.

[0028] like Figure 1-2 As shown, the present invention discloses a water quality multi-parameter intelligent sampling and detection analysis system, 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 perform water quality detection on the water sample, and the result is 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 sample.

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

[0030] A pretreatment component includes a treatment tank and a coarse filter; the treatment tank is connected to the sampling unit 1, and a coarse filter is provided at its inlet; a drain port 7 is provided at the bottom of the treatment tank, and the drain port 7 also has 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 sheet 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 switch valve 11 to form a U-connecting vessel. The first electrode sheet group 10 is placed in the middle of the detection tank 9 to form a capacitor plate channel for the water sample to pass through.

[0032] The cleaning assembly 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 and lowered by the first lifting device to clean the first electrode sheet group 10. The first cleaning brush is made of an antibacterial sponge material to prevent bacteria from growing during the cleaning of the electrode sheet group and to prevent bacteria from adhering to the electrode sheet group or the inner wall of the detection tank 9, thereby contaminating subsequent water samples and affecting the detection results. The first lifting device is an electric telescopic rod, and the first cleaning brush is a sponge sheet used to extend the first cleaning brush between the first electrode sheet group 10 for cleaning. The first lifting device is set at 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 sheet group 15, a second switch valve 12 and a second drain valve 19. The calibration tank 8 is connected to the above-mentioned processing tank through the second switch valve 12. The filter membrane 13 is arranged on the processing tank. The calibration tank 8 is provided with a second electrode sheet group 15, and the bottom of the calibration tank 8 is provided with a second drain valve 19. 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, so as to adjust the value of the first electrode sheet group 10.

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

[0035] Before work, first open the third switch 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 matter test, obtain the first electrode data of the first electrode sheet group 10 and the second electrode data of the second electrode sheet group 15 respectively, obtain the first calibration coefficient according to the second electrode data of the second electrode sheet group 15 and the standard electrode data, calibrate the first electrode data of the first electrode sheet 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 solids concentration data sent to the host computer 4 more accurate and reliable, providing a solid data foundation for subsequent water quality analysis, environmental assessment and other work, and improving the accuracy of the entire system in water quality monitoring.

[0037] In order to utilize the good conductivity and stability of the copper sheet to build a stable electric field environment, the auxiliary electrode sheet group can more accurately sense the charged particles in the water sample, especially in the calibration and detection process, to improve the stability and accuracy of the signal. A copper sheet is provided between the calibration tank 8 and the detection tank 9, and the copper sheet extends into the calibration tank 8 and the detection tank 9 respectively, and is arranged vertically with the second electrode sheet group 15.

[0038] In order to guide the water sample to form a stable flow field with uniform flow rate when passing through the first electrode sheet group 10, ensure that the electrode sheet group can fully and evenly contact the water sample, and accurately capture the capacitance changes caused by suspended particles; the detection tank 9 corresponds to the first electrode sheet group 10 and has a V-shaped structure with a small inside and a large outside.

[0039] In order to monitor the organic impurities that may exist in the water sample in real time, these organic impurities may interfere with the detection of suspended particle concentration by the electrode group, and provide early warning and assist in judging the reliability of the detection results. A color sensor is provided on the side wall of the detection tank 9, and the presence of organic influence is determined based on the color sensor. In this way, the operator can know in time whether the water sample is interfered by organic matter, retest the data, avoid drawing wrong conclusions about suspended matter concentration due to organic interference, and improve the intelligence and accuracy of the system detection.

[0040] In the above scheme, the cleaning assembly includes a second cleaning brush and a rotating motor, the second cleaning brush is arranged on the filter membrane 13 connected to the calibration tank 8 on the above processing tank, and the second cleaning brush is driven by the rotating motor to form a reciprocating cycle cleaning of the filter membrane 13. The second cleaning brush and the rotating motor can make the filter membrane 13 always maintain good filtering performance, the detection environment in the calibration tank 8 is stable and reliable, whether it is standard solution calibration or actual water sample detection, it can run stably, extend the service life of the filter membrane 13, and reduce maintenance costs.

[0041] After the sampling unit 1 of the present invention collects the water sample, it is roughly filtered through the above-mentioned treatment tank to remove large particle impurities, and the water sample is made uniform by magnetic stirring. During detection, the above-mentioned treatment tank is connected to the detection tank 9 through a U connecting vessel, and the water sample can flow smoothly through the first electrode sheet group 10, and its capacitance change reflects the concentration of suspended particles. At the same time, the second electrode sheet group 15 assists in calibration in the calibration tank 8, and the standard electrode data is obtained using a pure water or distilled water standard solution. The deviation is corrected by comparing the actual water sample detection data, and each structure cooperates to ensure accurate measurement. Here, the standard electrode data can be obtained using a pure water or distilled water standard solution at intervals. That is, it remains unchanged during one end of the time, and the other values ​​are based on the actual values ​​of the measured data.

[0042] The specific steps are as follows:

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

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

[0045] (3) Close the third on-off valve 18 and open the second drain valve 19 to put the calibration tank 8 into an empty tank state.

[0046] (4) Start a pretreatment component so that the corresponding treatment tank is injected with the latest water sample.

[0047] (5) Turn on the magnetic stirring structure 14, start it for 3-5 seconds, wait for it to be still for 10-15 seconds, and then open the first switch valve 11 and the second switch valve 12.

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

[0049] (7) Obtaining a first calibration coefficient according to the second electrode data of the second electrode sheet group 15 and the standard electrode data, calibrating the first electrode data of the first electrode sheet group 10 , and sending the first calibration coefficient to the host computer 4 through the communication unit 3 .

[0050] (8) Close the first on-off valve 11 and the second on-off valve 12, start the cleaning assembly to clean, and after completion, open the first drain valve 16 and the second drain valve 19.

[0051] In the water quality monitoring of urban drinking water sources, water samples are collected regularly every day, and large particles such as silt 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 concentration of suspended particles. Once the color sensor finds organic interference, it will promptly warn the staff, clean the components and regularly maintain key components to ensure long-term and stable monitoring, provide accurate data for the water quality safety of the water source, and ensure the health of residents' water use.

[0052] The above description is only a preferred feasible embodiment of the present invention and is not intended to limit the scope of the patent application of the present invention. All equivalent changes, equivalent substitutions or modified changes performed within the technical spirit and principles suggested by the present invention should be included in 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 in that: 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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