Environmental water sample detection device and detection method thereof

Abstract

The invention discloses an environmental water sample detection device and a detection method thereof, and relates to the technical field of water quality detection, the environmental water sample detection device comprises a water sump, and the water sump adopts an integral welding structure; a height-adjustable storage platform is arranged in the water sump, and the height of the storage platform is adjusted and controlled by driving structures arranged on the two sides of the water sump; a plurality of through holes are formed in the object placing platform, and three groups of detection units which are arranged side by side are detachably mounted on the object placing platform and correspond to the first detection assembly, the second detection assembly and the third detection assembly respectively; each detection assembly comprises three detection cabins, all the detection cabins are used for detecting an environmental water sample, the modular pipeline design supports maintenance of a single reagent channel, the whole machine does not need to be overhauled by shutdown, the maintenance cost is reduced, and the process is simple and convenient through integration of intelligent valve linkage, reagent reuse and pollution prevention and control technologies. Efficient, accurate and safe environment water sample detection is achieved, and the method is particularly suitable for industrial pollution discharge monitoring scenes needing high-frequency detection.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and specifically to an environmental water sample detection device and a detection method thereof. Background Art

[0002] Existing environmental water sample detection equipment is usually based on laboratory analysis instruments (such as spectrophotometers, chromatographs, mass spectrometers) or portable multi-parameter water quality detectors, and is used to detect parameters such as pH, turbidity, COD, and heavy metals. Such equipment generally relies on a single detection module and needs to complete sample dilution, concentration, and multi-index analysis step by step, with a long detection process. Although some equipment integrates pretreatment functions, its automation level is low and it relies on manual operation, making it difficult to meet the requirements of complex water samples. The main drawbacks of existing equipment include: low detection efficiency: traditional equipment cannot process multiple types of pollutants in parallel and needs to be detected item by item, which takes a long time. Therefore, it is very necessary to design an environmental water sample detection device and a detection method thereof. Summary of the Invention

[0003] The purpose of the present invention is to provide an environmental water sample detection device and a detection method thereof to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: an environmental water sample detection device and a detection method thereof, including a water tank, and the water tank adopts an integral welding structure; an adjustable-height placement platform is configured in the water tank, and the height adjustment of the placement platform is controlled by a driving structure arranged on both sides of the water tank; a plurality of through holes are provided on the placement platform, and three groups of detection units arranged side by side are detachably installed on the placement platform, corresponding to a first detection component, a second detection component, and a third detection component respectively; each detection component includes three detection chambers, and all detection chambers are used for the detection of environmental water samples. The detection chambers are divided into two parts, a main body and a cover, and the cover is detachable.

[0005] According to the above technical solution, the first detection component is an original water sample detection group, which directly collects untreated raw water samples and performs rapid screening to detect turbidity, chromaticity, dissolved oxygen, and conductivity baseline values.

[0006] According to the above technical solution, the second detection component is a dilution ratio detection group, which is internally provided with an automatic dilution system for treating high-concentration polluted water samples; the automatic dilution system includes a dilution chamber fixedly installed inside the detection chamber of the second detection component, and a pump liquid valve is installed on the side wall of the dilution chamber, and the pump liquid valve has the function of regulating the pumped dilution dose.

[0007] According to the above technical solution, the third detection component is a concentration enrichment detection group, integrating a solid-phase extraction module, which is used to process trace pollutants such as organic matter at the PPB level and trace heavy metals, and is equipped with a low-temperature concentration device; the sample in the detection chamber is heated and solidified by the low-temperature concentration device, and the impurities generated during the low-temperature concentration process are discharged through the pressure relief holes provided on the detection chamber; a base is fixedly installed on the inner top of the detection chamber, an inner concave cavity is provided at the bottom of the base, a slide rail is installed on the side wall of the inner concave cavity, a detection rod is slidably installed on the slide rail, and a position for installing a detachable detector is provided at the bottom of the detection rod.

[0008] According to the above technical solution, a first guide hole protruding from the top surface of the detection chamber is configured in the central area at the top of each detection chamber, and a first intelligent valve is installed inside the first guide hole, and the first intelligent valve is regulated by the detection system to manage the process of water sample flowing into the detection chamber.

[0009] According to the above technical solution, both sides of the water tank are concave, a first storage tank is arranged at the concave structure, and untreated raw water samples are stored in the first storage tank; a diversion pipe connected to an external structure is arranged in the upper region of the side wall of the first storage tank, and the external structure continuously conveys untreated raw water samples to the first storage tank; an extraction pipe is arranged in the lower region of the side wall of the first storage tank, a second intelligent valve is installed at the end of the extraction pipe, a first conduit is installed on the second intelligent valve, a booster valve is installed at the end of the first conduit, a second conduit is installed on the booster valve, the second conduit extends horizontally until it is connected and fixed to an induction valve on the side wall of the water tank, the induction valve is connected to a third conduit, the third conduit is connected to a three-way pipe, and the end of the pipe orifice of the three-way pipe faces the water tank; a fourth conduit is configured upward in the middle part of the second conduit, a third intelligent valve is installed on the fourth conduit, and a detachable cover plate is assembled at the end of the fourth conduit.

[0010] According to the above technical solution, fifth conduits are provided at the tops of the detection chambers included in the first detection assembly. The three fifth conduits are commonly connected to a sixth conduit, and the sixth conduit is then connected to a seventh conduit. A buffer chamber is provided in the end region of the seventh conduit. Three first medium delivery holes are sequentially provided on the side wall surface of the buffer chamber from top to bottom. A second storage chamber is provided on one side of the water storage chamber. An auxiliary reagent is stored in the second storage chamber. Second medium delivery holes are sequentially provided on the side of the second storage chamber facing the buffer chamber from top to bottom. The first medium delivery holes and the second medium delivery holes are sequentially matched in the order from top to bottom and are connected by three medical-grade silicone hoses. The first medium delivery holes and the second storage chamber are sequentially the first reagent channel, the second reagent channel, and the third reagent channel from top to bottom, wherein the first reagent channel is matched with the first detection assembly. Eighth conduits are provided at the tops of the detection chambers included in the second detection assembly. The three eighth conduits are commonly connected to a ninth conduit, and the ninth conduit is connected to the seventh conduit. The second reagent channel is matched with the second detection assembly. Tenth conduits are provided at the tops of the detection chambers included in the third detection assembly. The three tenth conduits are commonly connected to an eleventh conduit, and the eleventh conduit is connected to the seventh conduit. The third reagent channel is matched with the third detection assembly.

[0011] According to the above technical solution, a first storage cavity, a second storage cavity, and a third storage cavity are sequentially provided in the second storage chamber from top to bottom. A pH regulator is stored in the first storage cavity and is output through the first reagent channel. An oxidant is stored in the second storage cavity and is output through the second reagent channel. A complexing agent is stored in the third storage cavity and is output through the third reagent channel.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, by providing three groups of detection assemblies and performing reagent delivery in stages: after the pH regulator is delivered through the first reagent channel, the oxidant is injected through the second reagent channel, which can dissolve the organic matter of the residual reagent. Subsequently, the oxidant is switched to the second detection assembly for detection, realizing the dual use of a single reagent, saving the consumption of cleaning reagents. At the same time, the cleaning-detection reuse mechanism of the oxidant shortens the process interval, improves the daily detection throughput, and the modular pipeline design supports the maintenance of a single reagent channel without shutting down the whole machine for repair, reducing the maintenance cost. This process realizes the high efficiency, accuracy, and safety of environmental water sample detection through the integration of intelligent valve linkage, reagent reuse, and pollution prevention and control technologies, and is particularly suitable for industrial sewage monitoring scenarios that require high-frequency detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall three-dimensional structural schematic diagram of the present invention Figure I ; Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention Figure II ; Figure 3 It is a schematic diagram of the second storage bin of the present invention; Figure 4 It is a schematic diagram of the storage platform of the present invention; Figure 5 It is of the present invention Figure 2 Schematic diagram of the enlarged structure of area A therein; Figure 6 It is a schematic diagram of the detection bin inside the first detection component of the present invention; Figure 7 It is a schematic diagram of the detection bin inside the second detection component of the present invention; Figure 8 It is a schematic diagram of the detection bin inside the third detection component of the present invention; In the figure: 1. Water bin; 2. Storage platform; 3. Through hole; 4. Detection unit; 5. First detection component; 6. Second detection component; 7. Third detection component; 8. Detection bin; 9. First guide hole; 10. First intelligent valve; 11. First storage bin; 12. Diversion pipe; 13. Lead-out pipe; 14. Second intelligent valve; 15. First conduit; 16. Pressure increasing valve; 17. Second conduit; 18. Induction valve; 19. Third conduit; 20. Three-way pipe; 21. Fourth conduit; 22. Third intelligent valve; 23. Cover plate; 24. Fifth conduit; 25. Sixth conduit; 26. Seventh conduit; 27. Buffer bin; 28. First medium delivery hole; 29. Second storage bin; 30. Second medium delivery hole; 31. Eighth conduit; 32. Ninth conduit; 33. Tenth conduit; 34. Eleventh conduit; 35. First storage cavity; 36. Second storage cavity; 37. Third storage cavity; 38. Water level detection structure; 39. Water level cavity; 40. Floating ball assembly; 41. Dilution bin; 42. Pumping liquid valve; 43. Low-temperature concentration device; 44. Base; 45. Concave cavity; 46. Slide rail; 47. Detection rod. Specific embodiments

[0014] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0015] Please refer to Figures 1-8, the present invention provides a technical solution: an environmental water sample detection device and its detection method, including a water tank 1. The water tank 1 is designed with an integral welding structure, which ensures its stability and durability during use. An adjustable-height placement platform 2 is configured in the water tank 1. The height adjustment of the placement platform is controlled by a drive structure arranged on both sides of the water tank 1. This drive structure is a prior art structure and will not be elaborated here. The placement platform 2 is provided with a plurality of through holes 3, and three sets of detection units 4 are detachably installed on the placement platform 2. These three sets of detection units 4 are arranged side by side and respectively correspond to the first detection component 5, the second detection component 6, and the third detection component 7. Each detection component includes three detection chambers 8. Therefore, the first detection component 5, the second detection component 6, and the third detection component 7 together include 9 detection chambers 8. All these detection chambers 8 are used for the detection of environmental water samples. The detection chamber 8 is divided into a main body and a cover, and the cover is detachable to facilitate the cleaning of the interior of the detection chamber 8.

[0016] The first detection component 5 is an original water sample detection group, which directly collects untreated raw water samples and performs rapid screening detections: turbidity, chromaticity, dissolved oxygen, and conductivity baseline values. The detection period is 90 seconds per time. The second detection component 6 is a dilution ratio detection group, which is equipped with an automatic dilution system for treating highly contaminated water samples. It also has a dilution liquid constant temperature storage chamber (4°C ± 0.5°C). The detection period is 3 - 5 minutes (including the dilution process). The automatic dilution system includes a dilution chamber 41 fixedly installed inside the detection chamber 8 of the second detection component 6. A pump liquid valve 42 is installed on the side wall of the dilution chamber 41 to discharge the diluent stored in the dilution chamber 41, and the pump liquid valve 42 has the function of regulating the pumped-out diluent dosage. The third detection component 7 is a concentration and enrichment detection group, which is used to integrate a solid-phase extraction module to process trace pollutants: PPB-level organic substances and trace heavy metals. It is also equipped with a low-temperature concentration device 43. The low-temperature concentration and solidification technology improves the detection sensitivity of trace heavy metals. The detection period is 8 - 10 minutes (including pretreatment). The sample in this detection chamber 8 is heated and solidified by the low-temperature concentration device 43. The impurities generated during the low-temperature concentration process are discharged through a pressure relief hole provided on the detection chamber 8. The position of the pressure relief hole is not shown in this embodiment. A base 44 is fixedly installed on the inner top of this detection chamber 8. An inner concave cavity 45 is provided at the bottom of the base 44. A slide rail 46 is installed on the side wall of the inner concave cavity 45. A detection rod 47 is slidably installed on the slide rail 46. A position for installing a detachable detector is provided at the bottom of the detection rod 47, and a matching detector is pre-installed according to the detection requirements. At the central area of the top of each detection chamber 8, a first guiding hole 9 is configured. The guiding hole protrudes from the top surface of the detection chamber 8. At the inner hole of the first guiding hole 9, a detachable anti-blocking sampling head (with a filter screen having a pore diameter of 200 μm) can be assembled, aiming to prevent suspended substances in the water sample from entering the interior of the detection chamber 8. A first intelligent valve 10 is installed inside the first guiding hole 9. Through the regulation of the detection system, the control of the first intelligent valve 10 is realized, and then the process of the water sample flowing into the detection chamber 8 is managed.

[0017] Both sides of the water storage tank 1 are concave. The concave structure saves 30% of the lateral space and allows storage tanks to be deployed on both sides of the water storage tank 1 simultaneously (which can be expanded into a dual raw water storage system). A first storage tank 11 is arranged at the concave structure. The untreated raw water sample is stored in this storage tank. A diversion pipe 12 is arranged in the upper region of the side wall of the first storage tank 11. The diversion pipe is connected to an external structure, and the external structure is responsible for continuously delivering the untreated raw water sample to the first storage tank 11. An outlet pipe 13 is arranged in the lower region of the side wall of the first storage tank 11. A second intelligent valve 14 is installed at the end of the outlet pipe 13. A first conduit 15 is installed on the second intelligent valve 14. A pressure booster valve 16 is installed at the end of the first conduit 15. A second conduit 17 is installed on the pressure booster valve 16. The second conduit 17 extends horizontally until it is connected and fixed to an induction valve 18 on the side wall of the water storage tank 1. The induction valve 18 is connected to a third conduit 19. The third conduit 19 is connected to a three-way pipe 20. The end of the nozzle of the three-way pipe 20 faces the water storage tank 1; The interface between the diversion pipe 12 and the three-way pipe 20 is compatible with the mainstream water quality analysis instruments on the market; Stage of input of untreated raw water sample: The diversion pipe 12 receives the untreated raw water sample conveyed by the external structure and enters the first storage tank 11 through the upper part of the side wall, forming a preliminary storage space; The water level in the first storage tank 11 is monitored in real time by a float valve or a pressure sensor. When the water level drops to the preset lower limit (such as 20% of the capacity), the external structure starts the makeup water pump to maintain the stability of the water storage volume.

[0018] Pretreatment and pressure regulation: The untreated raw water sample flows out from the bottom of the first storage tank 11 through the outlet pipe 13. The second intelligent valve 14 adjusts the flow rate according to the real-time demand of the water storage tank 1 (adjustable from 0.5 to 5 L / min); The pressure booster valve 16 raises the water flow pressure to 0.3 - 0.5 MPa, eliminates the pressure loss during long-distance transportation, and stabilizes the flow rate through the horizontal extension section of the second conduit 17.

[0019] Water quality induction and shunt control: The induction valve 18 is built-in with multi-parameter sensors (turbidity, pH, conductivity) to monitor water quality in real time. If the detected value exceeds the standard (e.g., turbidity > 100 NTU), an alarm is triggered and the valve is closed. This process is to avoid detecting severely polluted raw water samples, as severely polluted raw water samples have no detection effect. Under normal water quality conditions, the valve is fully open, and water flows through the third conduit 19 into the three-way pipe 20.

[0020] The untreated raw water sample is transported to the water storage tank 1 through the three-way pipe 20.

[0021] When the system shuts down, the second intelligent valve 14 switches to the reverse flushing mode. A high-pressure water flow of 1.2 MPa is generated through the pressure booster valve 16 to automatically backflush the pipeline from the extraction pipe 13 to the three-way pipe 20 to remove sediments.

[0022] The middle part of the second conduit 17 is configured upward with a fourth conduit 21. A third intelligent valve 22 is installed on the fourth conduit 21, and a detachable cover plate 23 is assembled at the end of the fourth conduit 21. When the second intelligent valve 14 switches to the reverse flushing mode, a cleaning medium pumping structure is connected through the fourth conduit 21, and the cleaning medium is introduced through the fourth conduit 21 to automatically backflush the pipeline from the extraction pipe 13 to the three-way pipe 20.

[0023] At the top of the detection chamber 8 included in the first detection component 5, fifth conduits 24 are all provided. The three fifth conduits 24 are jointly connected to a sixth conduit 25, and the sixth conduit 25 is then connected to a seventh conduit 26. A buffer chamber 27 is provided in the end region of the seventh conduit 26. Three first medium delivery holes 28 are sequentially provided on the side wall surface of the buffer chamber 27 from top to bottom. On one side of the water storage tank 1, a second storage chamber 29 is provided, and auxiliary reagents are stored in the second storage chamber 29. Second medium delivery holes 30 are sequentially provided on the side of the second storage chamber 29 facing the buffer chamber 27 from top to bottom. The first medium delivery holes 28 and the second storage chamber 29 are sequentially matched from top to bottom and are connected by three hoses. The hoses are made of medical-grade silicone material and can withstand acid and alkali reagents. The first medium delivery holes 28 and the second storage chamber 29 are sequentially the first reagent channel, the second reagent channel, and the third reagent channel from top to bottom, where the first reagent channel is matched with the first detection component 5. At the top of the detection chamber 8 included in the second detection component 6, eighth conduits 31 are all provided. The three eighth conduits 31 are jointly connected to a ninth conduit 32, and the ninth conduit 32 is connected to the seventh conduit 26. The second reagent channel is matched with the second detection component 6. At the top of the detection chamber 8 included in the third detection component 7, tenth conduits 33 are all provided. The three tenth conduits 33 are jointly connected to an eleventh conduit 34, and the eleventh conduit 34 is connected to the seventh conduit 26. The third reagent channel is matched with the third detection component 7. Inside the second storage bin 29, a first storage cavity 35, a second storage cavity 36, and a third storage cavity 37 are arranged in sequence from top to bottom; The pH regulator is stored in the first storage cavity 35 and output through the first reagent channel; The oxidant is stored in the second storage cavity 36 and output through the second reagent channel; The complexing agent is stored in the third storage cavity 37 and output through the third reagent channel; By setting the first storage cavity 35, the second storage cavity 36, and the third storage cavity 37 as above, the layered delivery of auxiliary reagents is realized; The auxiliary reagent flows out through the second medium delivery hole 30 and is accurately delivered to the first medium delivery hole 28 of the buffer bin 27 through a hose. The flow rate is controlled by a micro metering pump. The buffer bin 27 serves as a central distribution hub: the upper first medium delivery hole 28 is connected to the first detection component 5 (pH detection), and the reagent is mixed with the water sample at a ratio of 1:10, and the mixing time ≤ 3 seconds; The middle first medium delivery hole 28 is connected to the second detection component 6 (COD detection), and after injecting the oxidant, a constant temperature reaction is started (150 °C ± 1 °C, 15 minutes); The lower first medium delivery hole 28 is connected to the third detection component 7 (heavy metal detection), and the complexing agent is added to eliminate interfering ions, and the reaction time is 5 minutes; The seventh conduit 26 serves as the main distribution pipe and integrates a pressure balance valve. The first detection component 5 receives the reagent through the sixth conduit 25, and the flow rate is 0.8 L / min; The second detection component 6 receives the reagent through the ninth conduit 32, and the flow rate is 1.2 L / min (a higher flow rate is required to maintain the oxidation reaction); The third detection component 7 receives the reagent through the eleventh conduit 34, and the flow rate is 0.5 L / min (required for precise complexation reaction); The flow rates of the above-mentioned auxiliary reagents can all be regulated by the micro metering pump.

[0024] All the detection bins 8 operate in parallel: The first detection component 5 (3 detection bins 8): Real-time monitor pH, temperature, and conductivity (detection period 30 seconds / time).

[0025] The second detection component 6 (3 detection bins 8): Perform COD digestion and colorimetric detection (wavelength 600 nm, absorbance error ± 0.003).

[0026] The third detection component 7 (3 detection bins 8): Detect lead, cadmium, and mercury by anodic stripping voltammetry (detection limit 0.1 ppb).

[0027] The detection system drives the storage platform 2 to the highest position. Manually install the detection chambers 8 one by one on the storage platform 2, and complete the installation of all structures connected to the detection chambers 8. During the manual installation process, it is necessary to connect the discharge holes at the bottom of the detection chambers 8 to the external waste storage structure. The bottom of the water tank 1 is also provided with connection holes, and the detection chambers 8 are connected to the external waste storage structure through pipelines. The discharge holes are equipped with remotely controllable valves. The highest position design in the manual installation stage provides sufficient operating space to avoid accidental contact of personnel's limbs with the live parts in the water tank 1, reducing the risk of work-related injuries. Then, the detection system drives the storage platform 2 to descend to its lowest position inside the water tank 1. Then, start to transport the untreated raw water sample in the first storage tank 11 into the water tank 1 until the preset water level is reached. The preset water level is judged by the water level detection structure 38 installed on the side wall of the water tank 1. The water level detection structure 38 includes a water level chamber 39 communicated with the water tank 1. A float assembly 40 is installed at the bottom of the water level chamber 39. The float assembly 40 is a prior art structure. When the float assembly 40 floats up, it indicates that the water level in the water tank 1 reaches the standard, and the water supply process of the first storage tank 11 is paused; Next, the detection system drives the first intelligent valve 10 to open. The untreated raw water sample in the water tank 1 enters all the detection chambers 8 through the first guide hole 9. The detection structures in all the detection chambers 8 start to perform the first detection on the untreated raw water sample. The detection system obtains the detection data. When the untreated raw water sample in the detection chambers 8 reaches the preset water volume, close the first intelligent valve 10, and a relatively sealed space is formed in the detection chambers 8; Then, the detection chambers 8 in the second detection component 6 start the raw water sample dilution process. Each time, a fixed amount of diluent is pumped into the detection chambers 8 through the pump liquid valve 42. Each time a diluent is discharged, the detection chambers 8 detect the sample inside once until the diluent is released completely. This process simulates the change process of raw water when it is invaded by external water sources in the natural environment. The raw water sample is detected during the simulation process. The gradient detection (for example: 5 cycles) of the raw water sample dilution process can analyze the change law of pollutant concentration, reducing the error compared with single dilution detection. Subsequently, the detection data is obtained and transmitted to the detection system; At the same time, the detection chambers 8 in the third detection component 7 start the low-temperature concentration process. The detection system drives the low-temperature concentration device 43 to operate, processes the untreated raw water sample inside until the untreated raw water sample is processed into a solid state. When the low-temperature concentration device 43 reaches the preset duration, the detection system starts to drive the detection rod 47 to descend along the slide rail 46 until the detection rod 47 is inserted into the solid sample formed in the detection chambers 8. The detection structure at the bottom of the detection rod 47 detects the solid sample to obtain data and transmits it to the detection system; This workflow achieves a full spectrum analysis of raw water samples from water quality indicators to trace pollutants through the integration of manual and automatic collaborative operations, multi-dimensional environmental simulation and high-precision detection technology.

[0028] After the above detection process is finished, all detection chambers 8 are cleaned and the raw water samples are replaced. The first detection component 5 is the original water sample detection group, but it contains impurity precipitation, which is not conducive to the next step of detection. The process of replacing the raw water sample is to open the discharge hole and the first intelligent valve 10, and the raw water sample in the water chamber 1 continues to enter the detection chamber 8, and the sample in the original detection chamber 8 is discharged through the discharge hole. The detection system presets the time for replacing the raw water sample. When the time is reached, the discharge hole and the first intelligent valve 10 are closed. By linking the discharge hole valve and the first intelligent valve 10, the waste liquid discharge of the detection chamber 8 and the injection of the new sample are completed synchronously. The single replacement process is short in time and high in efficiency. The detection system drives the first reagent channel to deliver the pH regulator to the first detection component 5. At this time, the detection chamber 8 starts to detect the sample after the pH regulator is added. After the detection is completed, the detection system drives the second reagent channel to deliver the oxidant. The oxidant is first driven to be delivered to the first detection component 5. The previous auxiliary reagent is cleaned by delivering the oxidant. After reaching the delivery time preset by the detection system, the detection system controls to deliver the oxidant to the second detection component 6. In the same process, the complexing agent is delivered to the third detection component 7. Reagent delivery in stages: after the first reagent channel delivers the pH adjuster, the second reagent channel is injected with an oxidant to dissolve the organic matter in the residual reagent. The oxidant is then switched to the second detection component 6 for detection, achieving the "one dose for two uses" of the reagent and saving the consumption of cleaning reagents. At the same time, the cleaning-detection reuse mechanism of the oxidant shortens the process interval and improves the daily detection throughput. The modular pipeline design supports the maintenance of a single reagent channel without the need to shut down the entire machine for overhaul, thereby reducing maintenance costs. This process achieves efficient, accurate and safe environmental water sample detection through the integration of intelligent valve linkage, reagent reuse and pollution prevention and control technologies, and is particularly suitable for industrial pollution monitoring scenarios that require high-frequency detection.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An environmental water sample detection device and its detection method, including a water tank (1), the water tank (1) adopts an integral welding structure, characterized in that, An adjustable-height storage platform (2) is arranged in the water sump (1), and the height adjustment of the storage platform (2) is controlled by drive structures arranged on both sides of the water sump (1); a plurality of through holes (3) are provided on the storage platform (2), and three groups of detection units (4) arranged side by side are detachably installed on the storage platform (2), corresponding to a first detection component (5), a second detection component (6), and a third detection component (7) respectively; each detection component includes three detection bins (8), and all the detection bins (8) are used for detecting environmental water samples. The detection bin (8) is divided into a main body and a cover body, and the cover body is detachable.

2. The environmental water sample detection device and detection method according to claim 1, characterized in that The first detection component (5) is an original water sample detection group, which directly collects untreated raw water samples and performs rapid screening to detect the baseline values of turbidity, chromaticity, dissolved oxygen, and conductivity.

3. The environmental water sample detection device and detection method according to claim 2, characterized in that, The second detection component (6) is a dilution ratio detection group, which is internally provided with an automatic dilution system for treating high-concentration polluted water samples, and a constant-temperature storage bin for dilution liquid is arranged inside; the automatic dilution system includes a dilution bin (41) fixedly installed inside the detection bin (8) of the second detection component (6). A pump liquid valve (42) is installed on the side wall of the dilution bin (41), and the pump liquid valve (42) has the function of regulating the pumped-out dilution dose.

4. An environmental water sample detection device and its detection method according to claim 3, characterized in that, The third detection component (7) is a concentration and enrichment detection group, which integrates a solid-phase extraction module and is internally provided with a low-temperature concentration device (43). The sample in the detection bin (8) is heated and solidified through the low-temperature concentration device (43), and impurities generated during the low-temperature concentration process are discharged through a pressure relief hole provided on the detection bin (8); a base (44) is fixedly installed at the inner top of the detection bin (8), an inner concave cavity (45) is provided at the bottom of the base (44), a slide rail (46) is installed on the side wall of the inner concave cavity (45), a detection rod (47) is slidably installed on the slide rail (46), and a position for installing a detachable detector is provided at the bottom of the detection rod (47).

5. The environmental water sample detection device and detection method according to claim 4, characterized in that, A first guide hole (9) protruding from the top surface of the detection bin (8) is arranged in the central area at the top of each detection bin (8), and a first intelligent valve (10) is installed inside the first guide hole (9). The first intelligent valve (10) is controlled by a detection system to manage the process of water sample flowing into the detection bin (8).

6. The environmental water sample detection device and detection method according to claim 5, characterized in that, Both sides of the water sump (1) are concave, and a first storage bin (11) is arranged at the concave structure. The untreated raw water sample is stored in the first storage bin (11). A diversion pipe (12) connected to an external structure is arranged in the upper region of the side wall of the first storage bin (11), and the external structure continuously conveys the untreated raw water sample to the first storage bin (11). An extraction pipe (13) is arranged in the lower region of the side wall of the first storage bin (11). A second intelligent valve (14) is installed at the end of the extraction pipe (13). A first conduit (15) is installed on the second intelligent valve (14). A booster valve (16) is installed at the end of the first conduit (15). A second conduit (17) is installed on the booster valve (16). The second conduit (17) extends horizontally until it is connected and fixed to an induction valve (18) on the side wall of the water sump (1). The induction valve (18) is connected to a third conduit (19). The third conduit (19) is connected to a three-way pipe (20). The pipe orifice end of the three-way pipe (20) faces the water sump (1). A fourth conduit (21) is arranged upward in the middle part of the second conduit (17). A third intelligent valve (22) is installed on the fourth conduit (21). A detachable cover plate (23) is assembled at the end of the fourth conduit (21).

7. The environmental water sample detection device and its detection method according to claim 6, characterized in that, Fifth conduits (24) are arranged at the tops of the detection bins (8) included in the first detection assembly (5). The three fifth conduits (24) are jointly connected to a sixth conduit (25). The sixth conduit (25) is then connected to a seventh conduit (26). A buffer bin (27) is arranged in the end region of the seventh conduit (26). Three first medium delivery holes (28) are sequentially arranged on the side wall surface of the buffer bin (27) from top to bottom. A second storage bin (29) is arranged on one side of the water sump (1). Auxiliary reagents are stored in the second storage bin (29). Second medium delivery holes (30) are sequentially arranged on the side of the second storage bin (29) facing the buffer bin (27) from top to bottom. The first medium delivery holes (28) and the second medium delivery holes (30) are sequentially matched in order from top to bottom. The first medium delivery holes (28) and the second storage bin (29) are sequentially the first reagent channel, the second reagent channel, and the third reagent channel from top to bottom, wherein the first reagent channel is matched with the first detection assembly (5). Eighth conduits (31) are arranged at the tops of the detection bins (8) included in the second detection assembly (6). The three eighth conduits (31) are jointly connected to a ninth conduit (32). The ninth conduit (32) is connected to the seventh conduit (26). The second reagent channel is matched with the second detection assembly (6). Tenth conduits (33) are arranged at the tops of the detection bins (8) included in the third detection assembly (7). The three tenth conduits (33) are jointly connected to an eleventh conduit (34). The eleventh conduit (34) is connected to the seventh conduit (26). The third reagent channel is matched with the third detection assembly (7).

8. The environmental water sample detection device and detection method according to claim 7, characterized in that, Inside the second storage bin (29), a first storage chamber (35), a second storage chamber (36), and a third storage chamber (37) are sequentially arranged from top to bottom; the pH regulator is stored in the first storage chamber (35) and output through the first reagent channel; the oxidant is stored in the second storage chamber (36) and output through the second reagent channel; the complexing agent is stored in the third storage chamber (37) and output through the third reagent channel.

9. A detection method based on the environmental water sample detection device according to any one of claims 1 - 8, characterized in that, It includes the following steps: The detection system drives the placement platform (2) to rise to the highest position, and an operator installs the detection bins (8) on the placement platform (2) one by one, connects all the structures connected to the detection bins (8), connects the discharge holes at the bottoms of the detection bins (8) to an external waste storage structure, and the bottom of the water bin (1) is connected to the external waste storage structure through a pipeline to the detection bins (8). The discharge holes are equipped with remotely controllable valves. The detection system drives the placement platform (2) to descend to the lowest position inside the water bin (1), and conveys the untreated raw water sample in the first storage bin (11) into the water bin (1) until the water level detection structure (38) determines that the preset water level is reached, and the water conveyance process of the first storage bin (11) is paused. The detection system drives the first intelligent valve (10) to open, and the untreated raw water sample in the water bin (1) enters all the detection bins (8) through the first guide hole (9). The detection structures in all the detection bins (8) perform the first detection on the untreated raw water sample. The detection system obtains the detection data. When the untreated raw water sample in the detection bins (8) reaches the preset water volume, the first intelligent valve (10) is closed to form a relatively airtight space inside the detection bins (8). The detection bins (8) in the second detection component (6) perform the raw water sample dilution process. Each time, a fixed amount of diluent is pumped into the detection bins (8) through the pump liquid valve (42). Each time a diluent is discharged, the detection bins (8) detect the sample inside until the diluent is completely released, and the detection data is obtained and transmitted to the detection system. At the same time, the detection bins (8) in the third detection component (7) perform the low-temperature concentration process. The detection system drives the low-temperature concentration device (43) to operate, processes the untreated raw water sample inside it into a solid state. When the low-temperature concentration device (43) reaches the preset duration, the detection system drives the detection rod (47) to descend along the slide rail (46) until it inserts into the sample that has formed a solid state in the detection bins (8), and the detection structure at the bottom of the detection rod (47) detects the solid sample, and the obtained data is transmitted to the detection system.

10. The detection method according to claim 9, characterized in that, It also includes the following steps: After the detection process is completed, all the detection bins (8) are cleaned, the raw water sample is replaced, the discharge holes and the first intelligent valve (10) are opened, the raw water sample in the water bin (1) continuously enters the detection bins (8), and the sample in the original detection bins (8) is discharged through the discharge holes. The detection system presets the duration for replacing the raw water sample, and closes the discharge holes and the first intelligent valve (10) after reaching the duration. The detection system drives the first reagent channel to deliver a pH regulator to the first detection component (5). The detection chamber (8) detects the sample after adding the pH regulator. After the detection is completed, the detection system drives the second reagent channel to deliver an oxidant, which is first delivered into the first detection component (5) to clean the previous auxiliary reagent. After reaching the preset delivery duration, the control system regulates the delivery of the oxidant into the second detection component (6); in the same process, a complexing agent is delivered into the third detection component (7).

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