Water quality monitoring system

Abstract

The utility model provides a water quality monitoring system which comprises a water sample collecting main body arranged on a water sample collecting pipeline, the water sample collecting main body is provided with a water sample cavity, and the water sample cavity is provided with a water inlet and a water outlet which are used for being connected with the water sample collecting pipeline. A water quality detection film is arranged on the side wall of the water sample cavity; the light emitting device is positioned on the outer side of the water sample collection main body, and is used for emitting light towards the water quality detection film; the image acquisition device is positioned on the outer side of the water sample acquisition main body and is used for acquiring an image of the water quality detection membrane. The water quality monitoring system improves the accuracy of a water quality detection result.

Description

Technical Field

[0001] The utility model relates to the technical field of groundwater quality detection, in particular to a water quality monitoring system. Background Art

[0002] Groundwater detection refers to the detection and classification of various chemical indexes of water in rock voids below the ground and water in saturated aquifers below the groundwater level. Groundwater is an important part of water resources. Due to its stable water volume and good water quality, it has become one of the important water sources for agricultural irrigation, industrial and mining, and cities. To prevent the deterioration of groundwater quality caused by groundwater pollution, overexploitation, artificial recharge, etc., in order to protect groundwater sources, it is necessary to monitor and measure the types and concentrations of harmful substances in groundwater and master the groundwater quality status and the changing trend of pollution.

[0003] Currently, when detecting groundwater, generally, the collected groundwater samples are first placed in sample containers, and then the collected groundwater is detected for water quality by a water quality detection device. Although the device in the prior art can complete the water quality detection, since the groundwater samples are affected by water replenishment, sampling instruments, etc. before water quality detection, the water quality may change, resulting in inaccurate water quality detection results. Therefore, how to improve the accuracy of groundwater quality detection results is a technical problem to be solved urgently. Summary of the Utility Model

[0004] In view of this, the utility model provides a water quality monitoring system to solve one or more technical problems existing in the prior art.

[0005] According to one aspect of the utility model, the utility model provides a water quality monitoring system, which includes:

[0006] A water sample collection main body for being arranged on a water sample collection pipeline. The water sample collection main body has a water sample cavity. The water sample cavity is provided with a water inlet and a water outlet for connecting with the water sample collection pipeline, and a water quality detection membrane is arranged on the side wall of the water sample cavity;

[0007] An optical emission device, located outside the water sample collection main body, for emitting light towards the water quality detection membrane;

[0008] An image acquisition device, located outside the water sample collection main body, for acquiring an image of the water quality detection membrane.

[0009] In some embodiments of the utility model, the water quality detection membrane includes a dissolved oxygen detection membrane, a PH detection membrane, and a carbon dioxide detection membrane, and the dissolved oxygen detection membrane, the PH detection membrane, and the carbon dioxide detection membrane are respectively located on different side walls of the water sample cavity.

[0010] In some embodiments of the present utility model, the light emitting device includes a first wavelength light source, a second wavelength light source, and a third wavelength light source, and the first wavelength light source, the second wavelength light source, and the third wavelength light source are respectively configured to emit light toward the dissolved oxygen detection film, the pH detection film, and the carbon dioxide detection film.

[0011] In some embodiments of the present utility model, the included angle range between the light rays emitted by each light emitting device and the corresponding water quality detection film is from 30 degrees to 80 degrees.

[0012] In some embodiments of the present utility model, the included angle between the light rays emitted by each light emitting device and the corresponding water quality detection film is 60 degrees.

[0013] In some embodiments of the present utility model, a light blocking layer is provided on one side of each water quality detection film away from the corresponding side wall of the water sample cavity.

[0014] In some embodiments of the present utility model, there is a gap between the light blocking layer and the water quality detection film.

[0015] In some embodiments of the present utility model, the gap range is from 1 mm to 5 mm; and / or,

[0016] The side wall of the water sample cavity is a transparent side wall.

[0017] In some embodiments of the present utility model, the dissolved oxygen detection film includes a PET layer and a gel layer, the pH detection film includes a cellulose acetate layer and a first fluorescent layer, and the carbon dioxide detection film includes a 2-hydroxyethyl methacrylate layer and a second fluorescent layer.

[0018] In some embodiments of the present utility model, the water sample collection main body has a cuboid structure, and the water inlet and the water outlet are respectively located at both ends of the water sample collection main body.

[0019] The water quality monitoring system disclosed in the above embodiments of the present utility model includes a water sample collection main body, a light emitting device, and an image collection device. The water sample collection main body is arranged on the water sample collection pipeline. The water sample collection main body has a water sample cavity for the collected water to pass through, and a water quality detection film is provided on the side wall of the water sample cavity. Therefore, the system can realize the detection of water quality during the water sample collection process at the water sample collection site, ensuring the stability of the water quality of the detected water sample. That is, the water sample collection main body of the water quality monitoring system disclosed in this application is connected to the water intake pipeline, and the groundwater quality is detected by means of in-situ monitoring, improving the accuracy of the water quality detection result.

[0020] Additional advantages, objects, and features of the present utility model will be partially described below and will become partially apparent to those of ordinary skill in the art after studying the following, or may be learned from the practice of the present utility model. The objects and other advantages of the present utility model can be achieved and obtained through the structures specifically pointed out in the written description, its claims, and the drawings.

[0021] Those skilled in the art will understand that the objects and advantages that can be achieved by the present utility model are not limited to those specifically described above, and the above and other objects that the present utility model can achieve will be more clearly understood according to the following detailed description. Brief Description of the Drawings

[0022] The drawings described herein are used to provide a further understanding of the present utility model, form a part of this application, and do not limit the present utility model. The components in the drawings are not drawn to scale, but are only for showing the principles of the present utility model. To facilitate showing and describing some parts of the present utility model, corresponding parts in the drawings may be enlarged, that is, may become larger relative to other components in an exemplary device actually manufactured according to the present utility model. In the drawings:

[0023] Figure 1 It is a schematic diagram of the usage state of a water quality monitoring system according to an embodiment of the present utility model.

[0024] Figure 2 It is a schematic diagram of the position of a water quality detection membrane according to an embodiment of the present utility model.

[0025] Reference Numerals:

[0026] Water sample collection main body 100, water quality detection membrane 110, light blocking layer 120, first wavelength light source 210, second wavelength light source 220, third wavelength light source 230, image acquisition device 300, left end pipeline 510, right end pipeline 520, monitoring well 400 Detailed Description of the Embodiments

[0027] To make the objects, technical solutions, and advantages of the embodiments of the present utility model clearer and more understandable, the following further detailed description is made of the embodiments of the present utility model with reference to the drawings. Herein, the illustrative embodiments of the present utility model and their descriptions are used to explain the present utility model, but do not limit the present utility model.

[0028] Herein, it should be noted that in order to avoid obscuring the present utility model with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present utility model are shown in the drawings, and other details less related to the present utility model are omitted.

[0029] It should be emphasized that when the term "comprising / including / having" is used herein, it refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0030] Here, it should also be noted that the orientation nouns such as "left end" and "right end" in the content of this specification are relative to the position direction shown in the drawings; if there is no special description, the term "connection" in this text can not only refer to direct connection, but also represent indirect connection with an intermediate object. Direct connection means that two components are connected without the aid of an intermediate component, and indirect connection means that two components are connected with the aid of other components.

[0031] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals represent the same or similar components.

[0032] Figure 1 It is a schematic diagram of the use state of the water quality monitoring system according to an embodiment of the present invention. As Figure 1 shown, when the water quality monitoring system performs water quality monitoring, it is connected to the water sample collection pipeline, that is, the water quality monitoring is completed by means of in-situ monitoring. Specifically, the water quality monitoring system specifically includes a water sample collection main body 100, a light emission device and an image collection device 300.

[0033] The water sample collection main body 100 is used to be arranged on the water sample collection pipeline. The water sample collection main body 100 has a water sample cavity. The water sample cavity has a water inlet and a water outlet for connecting with the water sample collection pipeline. A water quality detection membrane 110 is provided on the side wall of the water sample cavity; the light emission device is located outside the water sample collection main body 100, and the light emission device is used to emit light towards the water quality detection membrane 110; the image collection device 300 is located outside the water sample collection main body 100, and the image collection device 300 is used to collect an image of the water quality detection membrane 110.

[0034] As Figure 1As shown, the water sample collection main body 100 is specifically located on the water sample collection pipeline. The water inlet on the water sample collection main body 100 is connected to the water outlet of the left - hand pipeline 510, and the water outlet on the water sample collection main body 100 is connected to the water inlet of the right - hand pipeline 520. The water outlet of the right - hand pipeline 520 serves as the sample collection port. When collecting groundwater from the monitoring well 400, the groundwater sequentially passes through the left - hand pipeline 510, the water sample cavity, and the right - hand pipeline 520, and flows out from the sample collection port. The water quality detection membrane 110 is located on the side wall of the water sample cavity. Therefore, when the groundwater flows through the water sample cavity, it will come into contact with the water quality detection membrane 110 in the water sample cavity. In addition, the light - emitting device located outside the water sample collection main body 100 emits light towards the water quality detection membrane 110, and the image acquisition device 300 captures an image of the water quality detection membrane 110. Therefore, the water quality can be judged by measuring the light intensity. In this embodiment, the connection structure between the water sample collection pipeline and the water sample collection main body 100 is not limited, as long as the sealing performance of the connection position is ensured during the water flow process.

[0035] In addition, both the light - emitting device and the image acquisition device 300 are located outside the water sample collection main body 100 to ensure the effective emission of light and the effective acquisition of images. Exemplarily, both the light - emitting device and the image acquisition device 300 can be fixed on the water sample collection main body 100 through brackets.

[0036] Exemplarily, the water quality monitoring system simultaneously monitors dissolved oxygen (DO), pH, and carbon dioxide, which are easily reflected in water quality changes. At this time, the water quality detection membrane 110 includes a dissolved oxygen detection membrane, a pH detection membrane, and a carbon dioxide detection membrane. In order to facilitate the monitoring of various indicators, the corresponding dissolved oxygen detection membrane, pH detection membrane, and carbon dioxide detection membrane are respectively arranged on different side walls of the water sample cavity. It can be understood that the types of the water quality detection membrane 110 listed in this example are only some examples. In some other embodiments, the water quality detection membrane 110 can also include other types of detection membranes except the dissolved oxygen detection membrane, pH detection membrane, and carbon dioxide detection membrane, or the water quality detection membrane 110 can also be set as one or more of the dissolved oxygen detection membrane, pH detection membrane, and carbon dioxide detection membrane, which can be specifically set according to actual needs.

[0037] When the water quality detection film 110 includes a dissolved oxygen detection film, a pH detection film, and a carbon dioxide detection film, the light emission device includes a first wavelength light source 210, a second wavelength light source 220, and a third wavelength light source 230. The first wavelength light source 210, the second wavelength light source 220, and the third wavelength light source 230 are light sources of three different wavelengths, and the first wavelength light source 210, the second wavelength light source 220, and the third wavelength light source 230 are respectively used to emit light towards the dissolved oxygen detection film, the pH detection film, and the carbon dioxide detection film. Exemplarily, the wavelength of the first wavelength light source 210 for emitting light towards the dissolved oxygen detection film can be set to 450 nm, the wavelength of the second wavelength light source 220 for emitting light towards the pH detection film can be set to 404 nm or 453 nm, and the wavelength of the third wavelength light source 230 for emitting light towards the carbon dioxide detection film can be set to 405 nm.

[0038] From Figure 1 It can be seen that the light emission device can specifically be located at the left side position of the water sample collection main body 100, and each light emission device is respectively inclined with respect to the corresponding water quality detection film 110. That is, there is a certain included angle between the light emitted by the light emission device and the corresponding water quality detection film 110. Exemplarily, the range of the included angle between the light emitted by the light emission device and the corresponding water quality detection film 110 can be from 30 degrees to 80 degrees. In this embodiment, the light emission device emits light obliquely towards the water quality detection film 110 in order to make the water quality detection film 110 better receive the light. Optionally, the included angle between the light emitted by the light emission device and the corresponding water quality detection film 110 can be set to 60 degrees.

[0039] Furthermore, in order to prevent light from overflowing from the water quality detection film 110, a light blocking layer 120 is further provided on the side of the water quality detection film 110 away from the corresponding side wall of the water sample cavity. The light blocking layer 120 can specifically be a black light blocking plate. As Figure 2 shown, the black light blocking plate and the side wall of the water sample cavity are respectively located on both sides of the water quality detection film 110. At this time, the side wall of the water sample cavity is a transparent side wall, so most of the light emitted by the light emission device is received by the water quality detection film 110. In some embodiments, the material of the side wall of the water sample cavity can be quartz glass. Quartz glass is a special industrial technical glass made of silicon dioxide and has good physical and chemical properties. In this embodiment, setting the material of the side wall of the water sample cavity to quartz glass is only an optional implementation manner. In addition to this, other transparent materials can also be used, such as transparent acrylic plates, etc.

[0040] To ensure that the water quality detection membrane 110 effectively contacts the groundwater in the water sample cavity, there is also a gap between the light-blocking layer 120 and the water quality detection membrane 110. When groundwater flows through the water sample cavity, part of it flows into the gap between the light-blocking layer 120 and the water quality detection membrane 110, so that the water quality detection membrane 110 can better contact the water to be detected. It can be understood that the size of the gap between the light-blocking layer 120 and the water quality detection membrane 110 can be set according to actual needs; in Figure 2 In the illustrated embodiment, the total thickness of the side wall of the water sample cavity, the water quality detection membrane 110, the light-blocking layer 120, and the gap is 2 cm. In this embodiment, the size of the gap between the light-blocking layer 120 and the water quality detection membrane 110 can be between 1 mm and 5 mm.

[0041] In addition, in Figure 1 In the illustrated water quality monitoring system, the water sample collection main body 100 has a cuboid structure, and the water inlet and the water outlet are respectively located at both ends of the water sample collection main body 100. At this time, the dissolved oxygen detection membrane, the PH detection membrane, and the carbon dioxide detection membrane are respectively located on three adjacent side walls, and the three light-emitting devices are respectively located at corresponding positions on the left end of the water sample collection main body 100. It can be understood that setting the shape of the water sample collection main body 100 as a cuboid in this embodiment is only an example. For example, it can also be set as a triangular prism shape. At this time, the dissolved oxygen detection membrane, the PH detection membrane, and the carbon dioxide detection membrane can be respectively located on the three side walls of the triangular prism.

[0042] Furthermore, the dissolved oxygen detection membrane includes a PET layer and a gel layer, the PH detection membrane includes a cellulose acetate layer and a first fluorescent layer, and the carbon dioxide detection membrane includes a 2-hydroxyethyl methacrylate layer and a second fluorescent layer. Specifically, the dissolved oxygen detection membrane uses the PET layer as a carrier, and the gel layer is coated on the surface of the PET layer; when making the gel layer, first mix toluene and ethanol solvents in a ratio of 4:1, and dissolve 7.5 mg of tris(4,7-diphenyl-1,10-phenanthroline) ruthenium dichloride and 1 g of ethyl cellulose in 0 mL of the toluene and ethanol mixed solution, and stir into a transparent gel. The thickness of the gel layer is 10 μm; the monitoring range of the dissolved oxygen detection membrane with this structure is 0 - 15 mg / L. The first fluorescent agent in the PH detection membrane is covalently connected to the cellulose acetate layer through a sulfonamide bond, and the first fluorescent agent uses 8-Hydroxypyrene-1,3,6-Trisulfonate (6358-69-6) as the fluorescent agent. The monitoring value range of the PH detection membrane with this structure is 6 - 9. The first fluorescent agent in the carbon dioxide detection membrane is fixed to the 2-hydroxyethyl methacrylate layer modified with nano-silica, and the second fluorescent agent uses 8-Hydroxypyrene-1,3,6-Trisulfonate (6358-69-6) as the fluorescent agent.

[0043] It can be found from the above embodiments that the water quality monitoring system in the present application includes a water sample collection main body, a light emission device, and an image collection device. The water sample collection main body is arranged on the water sample collection pipeline. The water sample collection main body has a water sample cavity for the collected water to pass through, and a water quality detection membrane is provided on the side wall of the water sample cavity. Therefore, the system can realize the detection of water quality during the water sample collection process at the water sample collection site, ensuring the stability of the water quality of the detected water sample. That is, the water sample collection main body of the water quality monitoring system disclosed in the present application is connected to the water intake pipeline, and the groundwater quality is detected by means of in-situ monitoring, improving the accuracy of the water quality detection result.

[0044] Moreover, the water quality monitoring system disclosed in the present application is monitored in a closed environment and will not be interfered by oxygen and carbon dioxide in the air; through regular collection, considering the fluidity of groundwater, the homogenization based on multiple collection results is used as the water quality monitoring result, further improving the accuracy and effectiveness of the water quality monitoring result.

[0045] In the present utility model, the features described and / or illustrated for one embodiment can be used in the same way or in a similar way in one or more other embodiments, and / or combined with the features of other embodiments or replace the features of other embodiments.

[0046] The above-listed embodiments show and describe the basic principles and main features of the present utility model. However, the present utility model is not limited to the above embodiments. Modifications, equivalent changes, and modifications made by those skilled in the art to the present utility model without creative efforts shall fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A water quality monitoring system, characterized in that: The water quality monitoring system comprises: A water sample collection body for being arranged on a water sample collection pipeline, the water sample collection body having a water sample cavity, the water sample cavity having a water inlet and a water outlet for being connected to the water sample collection pipeline, and a water quality detection membrane being arranged on the side wall of the water sample cavity; A light emitting device, located outside the water sample collecting body, and used to emit light toward the water quality detection membrane; An image acquisition device is located outside the water sample acquisition body, and is used to acquire images of the water quality detection membrane.

2. The water quality monitoring system according to claim 1, characterized in that: The water quality detection membrane includes a dissolved oxygen detection membrane, a pH detection membrane and a carbon dioxide detection membrane, and the dissolved oxygen detection membrane, the pH detection membrane and the carbon dioxide detection membrane are respectively located on different side walls of the water sample cavity.

3. The water quality monitoring system according to claim 2, characterized in that: The light emitting device includes a first wavelength light source, a second wavelength light source and a third wavelength light source, and the first wavelength light source, the second wavelength light source and the third wavelength light source are used to emit light toward the dissolved oxygen detection membrane, the pH detection membrane and the carbon dioxide detection membrane respectively.

4. The water quality monitoring system according to claim 3, characterized in that: The angle between the light emitted by each light emitting device and the corresponding water quality detection membrane ranges from 30 degrees to 80 degrees.

5. The water quality monitoring system according to claim 4, characterized in that: The angle between the light emitted by each light emitting device and the corresponding water quality detection membrane is 60 degrees.

6. The water quality monitoring system according to claim 2, characterized in that: A light blocking layer is provided on one side of each water quality detection membrane away from the corresponding side wall of the water sample cavity.

7. The water quality monitoring system according to claim 6, characterized in that: There is a gap between the light blocking layer and the water quality detection film.

8. The water quality monitoring system according to claim 7, characterized in that: The gap ranges from 1 mm to 5 mm; and / or, The side wall of the water sample cavity is a transparent side wall.

9. The water quality monitoring system according to any one of claims 2 to 8, characterized in that: The dissolved oxygen detection membrane comprises a PET layer and a gel layer, the pH detection membrane comprises a cellulose acetate layer and a first fluorescent layer, and the carbon dioxide detection membrane comprises a hydroxyethyl methacrylate layer and a second fluorescent layer.

10. The water quality monitoring system according to any one of claims 2 to 8, characterized in that: The water sample collection body is a rectangular parallelepiped structure, and the water inlet and the water outlet are respectively located at two ends of the water sample collection body.

Images