An online water quality monitoring system using anodic stripping voltammetry

Abstract

This utility model discloses an online water quality monitoring system using anodic stripping voltammetry, comprising a workbench and a detector, a reaction vessel, and three volumetric flasks mounted on the workbench. It also includes: a moving mechanism located at the bottom of each volumetric flask; a detection head mounted on the reaction vessel, with a connector on the bottom side of the detection head; two electrodes on the bottom outer wall of the connector; a first connector on one outer wall of the detector; and a second connector on the top outer wall of the detection head. A wire connects the first and second connectors. The electrodes are used in conjunction with the three volumetric flasks and the reaction vessel. This online water quality monitoring system using anodic stripping voltammetry detects samples from three volumetric flasks, resulting in more accurate results. It also allows for the cleaning of waste liquid generated during the detection process, providing excellent monitoring performance.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to an online water quality monitoring system using the anodic stripping voltammetry method. Background Technology

[0002] The anodic stripping voltammetry (ASV) method utilizes electrolytic enrichment and reverse stripping techniques to achieve highly sensitive and rapid online monitoring of heavy metals (such as lead, cadmium, copper, and zinc) in water bodies. It is widely used in environmental monitoring, industrial process control, and emergency pollution incident response.

[0003] However, when using traditional anodic stripping voltammetry water quality online monitoring systems, the water quality measurement range at the same location is narrow, which can easily lead to inaccurate results and affect the monitoring effect. Utility Model Content

[0004] This utility model discloses an online water quality monitoring system based on anodic stripping voltammetry, which aims to solve the technical problem that traditional online water quality monitoring systems based on anodic stripping voltammetry have a narrow measurement range at the same location, which can easily lead to inaccurate results and affect the monitoring effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An online water quality monitoring system using anodic stripping voltammetry includes a workbench, a detector mounted on the workbench, a reaction vessel, and three volumetric flasks, and further includes: Moving mechanism: The moving mechanism is located at the bottom of the volumetric flask; The reactor is equipped with a detection head, and the bottom of the detection head is equipped with a connector. Two electrodes are provided on the bottom outer wall of the connector. A first connector is provided on one side outer wall of the detector, and a second connector is provided on the top outer wall of the detection head. A wire is provided between the first connector and the second connector. The electrodes are used in conjunction with the three volumetric flasks and the reactor, respectively.

[0006] In this scheme, three volumetric flasks are used to test the water quality at different depths in the same location. The pretreated water source is introduced into the volumetric flasks, and the two electrodes of the detection head are placed inside the volumetric flasks. After the heavy metals are enriched by electrolysis, the electrodes are placed in the reaction vessel and dissolved by reverse voltage. The water quality is monitored online by recording the current-voltage curves through the detector. The results obtained by testing the water source in the three volumetric flasks are more convincing and the monitoring effect is better.

[0007] In a preferred embodiment, the moving mechanism includes a limiting groove at the bottom of the volumetric flask, a placement groove on one side of the outer wall of the top of the workbench, sliding grooves on both inner walls of the placement groove, a common slide block slidably connected to the inner walls of the two sliding grooves on opposite sides, the limiting groove being located on the slide block, a connecting groove on one outer wall of the slide block, and a pull ring on the inner wall of the connecting groove.

[0008] Using the above technical solution, the volumetric flask is placed in the limiting groove for limiting. During each test, some liquid will be spilled into the gap of the limiting groove. The surrounding area can be cleaned during the working process. After the work is completed, the slide can be moved out of the slide groove by pulling the pull ring, and the limiting groove on the slide and the volumetric flask as a whole can be moved out for cleaning, which is thorough.

[0009] As can be seen from the above, an online water quality monitoring system using anodic stripping voltammetry includes a workbench, a detector mounted on the workbench, a reaction vessel, and three volumetric flasks, and also includes: Moving mechanism: The moving mechanism is located at the bottom of the volumetric flask; The reactor is equipped with a detection head, and a connector is located on the bottom side of the detection head. Two electrodes are mounted on the bottom outer wall of the connector. A first connector is located on one outer wall of the detector, and a second connector is located on the top outer wall of the detection head. A wire connects the first and second connectors. The electrodes are used in conjunction with three volumetric flasks and the reactor. The anodic stripping voltammetry water quality online monitoring system provided by this invention detects samples from three volumetric flasks, resulting in more accurate results. It also allows for the cleaning of waste liquid generated during the detection process and provides excellent monitoring performance. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of an online water quality monitoring system based on the anodic stripping voltammetry method proposed in this utility model.

[0011] Figure 2 This is a schematic diagram of the electrode structure of an online water quality monitoring system based on the anodic stripping voltammetry method proposed in this utility model.

[0012] Figure 3 This is a schematic diagram of the moving mechanism of an online water quality monitoring system based on the anodic stripping voltammetry method proposed in this utility model.

[0013] In the attached diagram: 1. Workbench; 2. Detector; 3. Reactor; 4. Volumetric flask; 5. Detector head; 6. First connector; 7. Wire; 8. Second connector; 9. Connector; 10. Electrode; 11. Inner thread; 12. Outer thread; 13. Limiting groove; 14. Placement groove; 15. Slide groove; 16. Slide seat; 17. Pull ring. Detailed Implementation

[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0015] The anodic stripping voltammetry water quality online monitoring system disclosed in this utility model is mainly used in scenarios where the water quality measurement range at the same location is narrow when using the traditional anodic stripping voltammetry water quality online monitoring system, which can easily lead to inaccurate results and affect the monitoring effect.

[0016] Reference Figure 1 An online water quality monitoring system using anodic stripping voltammetry includes a workbench 1, a detector 2 mounted on the workbench 1, a reaction vessel 3, and three volumetric flasks 4, and further includes: Moving mechanism: The moving mechanism is located at the bottom of volumetric flask 4; The reactor 3 is equipped with a detection head 5, and a connector 9 is provided on the bottom side of the detection head 5. Two electrodes 10 are provided on the bottom outer wall of the connector 9. A first connector 6 is provided on one side outer wall of the detector 2, and a second connector 8 is provided on the top outer wall of the detection head 5. A wire 7 is provided between the first connector 6 and the second connector 8. The electrodes 10 are used in conjunction with three volumetric flasks 4 and the reactor 3 respectively.

[0017] In the specific working process, the detection head 5 can first be placed in the reaction vessel 3. By setting up three volumetric flasks 4, the water quality at different depths at the same position is tested. The pretreated water source is introduced into the volumetric flask 4, and the two electrodes 10 of the detection head 5 are placed in the volumetric flask 4. After the heavy metals are enriched by electrolysis, the electrodes 10 are then placed in the reaction vessel 3 and dissolved by reverse voltage. The current and voltage curves are recorded by the detector 2 to monitor the water quality online. The water source in the three volumetric flasks 4 is tested separately, and the results are more convincing.

[0018] The detector 2 is equipped with a printer. The detector 2 works in conjunction with the electrode 10. The built-in printer in the detector 2 can print the results of the electrode 10 showing different peak values ​​as the scanning voltage changes, so as to monitor the heavy metal content of the water quality in real time. With the online printing results, the comparison of results is more accurate.

[0019] It should be noted that this method uses three volumetric flasks 4 for more accurate monitoring results, and the time cost of measuring three samples separately is acceptable. If a rapid response is required, the number of parallel samples can be reduced (e.g., two tests). Representative samples can also be tested using one volumetric flask 4, depending on the actual monitoring system.

[0020] Reference Figure 1 and Figure 2 In a preferred embodiment, a fixing groove is formed on the bottom outer wall of the detection head 5, and an inner ring thread 11 is provided on the inner circumferential wall of the fixing groove. An outer ring thread 12 is provided on the outer circumferential wall of the connector 9 near the top. The outer ring thread 12 and the inner ring thread 11 are adapted to each other, and the electrode 10 is used in conjunction with the detection head 5.

[0021] Specifically, electrode 10 is screwed into the inner thread 11 inside the detection head 5 via the outer thread 12 of the connector 9, thereby connecting and fixing the connector 9 and the detection head 5, and thus fixing electrode 10. When the electrode 10 is used to react with the second volumetric flask 4 after enrichment of the first volumetric flask 4, electrode 10 can be replaced by loosening the thread. Disassembly and installation are convenient and easy to operate. After monitoring is completed, the used electrode 10 can be cleaned and recycled in a unified manner.

[0022] Reference Figure 1 and Figure 3 In a preferred embodiment, the moving mechanism includes a limiting groove 13 at the bottom of the volumetric flask 4, a placement groove 14 on one side of the top outer wall of the workbench 1, and sliding grooves 15 on both inner walls of the placement groove 14. The same slide block 16 is slidably connected to the inner wall of the opposite side of the two sliding grooves 15. The limiting groove 13 is located on the slide block 16. A connecting groove is opened on one outer wall of the slide block 16, and a pull ring 17 is connected to the inner wall of the connecting groove.

[0023] Specifically, the volumetric flask 4 is placed in the limiting groove 13 for limiting. During each test, waste liquid will be spilled into the gap of the limiting groove 13. The surrounding area can be cleaned during the working process. After the work is completed, the slide 16 can be moved out of the slide groove 15 by pulling the pull ring 17, and the limiting groove 13 on the slide 16 and the volumetric flask 4 can be moved out and cleaned as a whole.

[0024] The volumetric flask 4 is used in conjunction with the limiting groove 13. The volumetric flask 4 is limited in the limiting groove 13. It can be placed upright for anodic stripping voltammetry, or it can be placed upside down in the limiting groove 13 for storage. When used repeatedly for a short period of time, it can be placed upside down in the ultra-clean limiting groove 13 and dried with nitrogen. When stored for a long period of time, it can be dried in a 60°C oven and returned to the numbered storage rack.

[0025] Working principle: During use, water at different depths in the same location is pre-treated and then introduced into three volumetric flasks 4. The two electrodes 10 of the detection head 5 are placed in the volumetric flasks 4. After the heavy metals are enriched by electrolysis, the electrodes 10 are then placed in the reaction vessel 3 and dissolved using reverse voltage. The current-voltage curve is recorded by the detector 2 to monitor the water quality online. The water source in each of the three volumetric flasks 4 is tested. During the dissolution process, the outer thread 12 and the inner thread 11 are loosened, and the electrodes 10 are removed from the detection head 5 for volt-ampere measurement. Then, the new electrodes 10 are tightened to test another volumetric flask 4. After a period of time, the work is completed. The slide 16 can be pulled out by pulling the pull ring 17 to clean and store the entire limiting groove 13 and the volumetric flasks 4.

[0026] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. An online water quality monitoring system using anodic stripping voltammetry, comprising a workbench (1) and a detector (2), a reaction vessel (3), and three volumetric flasks (4) mounted on the workbench (1), characterized in that, Also includes: Moving mechanism: The moving mechanism is located at the bottom of the volumetric flask (4); The reactor (3) is provided with a detection head (5), and a connector (9) is provided on the bottom side of the detection head (5). Two electrodes (10) are provided on the bottom outer wall of the connector (9). A first connector (6) is provided on one side outer wall of the detector (2), and a second connector (8) is provided on the top outer wall of the detection head (5). A wire (7) is provided between the first connector (6) and the second connector (8). The electrodes (10) are used in conjunction with the three volumetric flasks (4) and the reactor (3). 2.The on-line water quality monitoring system based on anodic stripping voltammetry of claim 1, wherein, The detector (2) is equipped with a printer inside, and the detector (2) is used in conjunction with the electrode (10). 3.The on-line water quality monitoring system based on anodic stripping voltammetry of claim 1, wherein, The bottom outer wall of the detection head (5) has a fixing groove, and the inner circumferential inner wall of the fixing groove is provided with an inner ring thread (11). The outer circumferential outer wall of the connector (9) near the top is provided with an outer ring thread (12), and the outer ring thread (12) and the inner ring thread (11) are compatible. 4.The on-line water quality monitoring system based on anodic stripping voltammetry of claim 3, wherein, The electrode (10) is used in conjunction with the detection head (5).

5. The online water quality monitoring system based on anodic stripping voltammetry according to claim 1, characterized in that, The moving mechanism includes a limiting groove (13) at the bottom of the volumetric flask (4), a placement groove (14) on one side of the top outer wall of the workbench (1), and sliding grooves (15) on both sides of the inner wall of the placement groove (14). The same sliding block (16) is slidably connected on the inner wall of the opposite side of the two sliding grooves (15).

6. The anodic stripping voltammetry water quality online monitoring system according to claim 5, characterized in that, The limiting groove (13) is located on the slide (16), and a connecting groove is provided on one side of the outer wall of the slide (16), and a pull ring (17) is provided on the inner wall of the connecting groove.

7. The anodic stripping voltammetry water quality on-line monitoring system according to claim 6, characterized in that, The volumetric bottle (4) is used in conjunction with the limiting groove (13).

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