CN111157691A - Detection apparatus for micro-plastic concentration in water - Google Patents
Detection apparatus for micro-plastic concentration in water Download PDFInfo
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- CN111157691A CN111157691A CN201911345328.6A CN201911345328A CN111157691A CN 111157691 A CN111157691 A CN 111157691A CN 201911345328 A CN201911345328 A CN 201911345328A CN 111157691 A CN111157691 A CN 111157691A
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Abstract
The invention discloses a device for detecting the concentration of micro-plastic in a water body, which is characterized in that a submersible pump, a flow meter, a screen bag, a filter plate and a micro-plastic collecting cup are sequentially arranged on a frame body, a water outlet of the submersible pump is sequentially connected with the flow meter, the screen bag and the micro-plastic collecting cup, the volume water amount sucked by the submersible pump is measured by the flow meter, filtered and discharged by the screen bag and the micro-plastic collecting cup, the micro-plastic particles in the screen bag and the micro-plastic collecting cup are collected, and the concentration of the micro-plastic in the water body is calculated by determining the quantity of the micro-plastic particles. The invention fills the situation that the micro-plastic concentration detection device in the water body in the market is missing, takes large-volume sampling as the advantage of the invention, can simultaneously meet the sampling requirements of different fresh water, estuaries, different water bodies in inshore and offshore areas and different water layers, and provides a reliable solution for the detection of the micro-plastic concentration in the water body. The invention has the advantages of high working efficiency and accurate and reliable sample detection.
Description
Technical Field
The invention relates to a sample collecting device in the technical field of environmental protection, in particular to a device for detecting the concentration of micro-plastics in a water body.
Background
Estuaries and coastal areas where humans are in frequent activities are often considered as areas of pollutant accumulation, and the dual action of land and sea results in the accumulation of large amounts of plastic waste. Under the comprehensive action of ultraviolet rays, water flow, tides and other factors, large plastic garbage is easy to break into small plastic fragments which are difficult to degrade in the environment and exist for a long time. The environmental pollution problem caused by the characteristics of small volume, large specific surface area and the like of the micro plastic has attracted attention all over the world. In recent years, with the improvement of sampling and monitoring technologies, the distribution of micro-plastics is found in rivers, lakes, estuaries, oceans and even glaciers. The widely distributed micro-plastics become one of the important reasons for harming the survival and population multiplication of the individual organisms. Marine organisms that eat micropolastics often die due to difficulty in digestion or intestinal abrasion. Plastic waste floating on the sea surface is a good habitat for harmful pathogenic bacteria and algae. At the same time, as polymers, the hazardous effects are further complicated by the chemical nature of the microplastics. China is a big plastic production and consumption country, and the problem of serious plastic pollution is caused because the control is not in place. According to the sea area monitoring results of various provinces in the east China sea and coastal areas in 2015, the plastic wastes respectively account for 72% and 86% of beach wastes and ocean floating wastes, and the pollution situation of micro plastics in surface water bodies of coastal areas such as Bohai sea, east China sea, south China sea, Yangtze river, Oujiang river, Min and the like is very worried, so that the micro plastic detection on the water bodies is very necessary for effectively implementing the environment protection work on the water bodies.
Disclosure of Invention
The invention aims to provide a device for detecting the concentration of micro-plastics in a water body, aiming at the defects of the prior art, the device comprises a submersible pump, a flow meter, a screen bag, a filter plate and a micro-plastic collecting cup which are sequentially arranged on a frame body, a water outlet of the submersible pump is sequentially connected with the flow meter, the screen bag and the micro-plastic collecting cup, the volume water amount sucked by the submersible pump is measured by the flow meter, filtered and discharged by the screen bag and the micro-plastic collecting cup, micro-plastic particles in the screen bag and the micro-plastic collecting cup are collected, and the concentration of the micro-plastics in the water body is calculated by determining the quantity of the micro-plastic particles. The invention fills the situation that the micro-plastic concentration detection device in the water body in the market is missing, takes large-volume sampling as the advantage of the invention, can simultaneously meet the sampling requirements of different fresh water, estuaries, different water bodies in inshore and offshore areas and different water layers, and provides a reliable solution for the detection of the micro-plastic concentration in the water body. The invention has the advantages of high working efficiency and accurate and reliable sample detection.
The specific technical scheme for realizing the purpose of the invention is as follows:
a detection device for the concentration of micro-plastics in a water body is characterized by comprising a frame body, a submersible pump, a screen bag, a micro-plastic collecting cup, a flowmeter, a filter plate and a steering fin;
the frame body is formed by enclosing three stand columns between a top cover and a bottom plate, and a submersible pump seat and a filter plate seat are arranged among the three stand columns of the frame body from top to bottom;
the two sides of the filter plate are respectively provided with an upper interface and a lower interface; the screen bag is cylindrical;
the submersible pump is arranged on the submersible pump seat of the frame body; the filter plate is arranged on the filter plate seat of the frame body;
the lower bag opening of the screen bag is arranged at the upper opening of the filter plate; the micro plastic collecting cup is arranged at the lower opening of the filter plate;
the flow meter is arranged between the outlet of the submersible pump and the upper bag opening of the screen bag;
the steering fin is arranged on one upright post of the frame body.
The micro plastic collecting cup is in a mesh shape, and the aperture of the mesh is 60 um. The screen bag is the mesh form, and the aperture of its mesh is 60 ~ 330 um. The filter plate is provided with meshes, and the aperture of each mesh is 2 cm. The upper opening of the micro plastic collecting cup is provided with threads, and the bottom of the micro plastic collecting cup is provided with a screen. And the top cover is provided with a hanging ring.
The invention adopts the technical scheme that a submersible pump, a flowmeter, a screen bag, a filter plate and a micro plastic collecting cup are sequentially arranged on a frame body, a water outlet of the submersible pump is sequentially connected with the flowmeter, the screen bag and the micro plastic collecting cup, the volume water amount sucked by the submersible pump is measured by the flowmeter, and is filtered and discharged by the screen bag and the micro plastic collecting cup, and the concentration of micro plastic in a water body is calculated by collecting the micro plastic particles in the screen bag and the micro plastic collecting cup and determining the quantity of the micro plastic particles. The invention fills the situation that the device for detecting the concentration of the micro-plastic in the water body is lost in the market, and provides a reliable solution for detecting the concentration of the micro-plastic in the water body. The invention has the advantages of high working efficiency and accurate and reliable sample detection.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the volume flow of water according to the present invention;
FIG. 3 is a schematic micrograph of the detected microplastics of the present invention.
Detailed Description
Referring to fig. 1, the invention comprises a frame body 1, a submersible pump 2, a screen bag 3, a micro plastic collecting cup 4, a flowmeter 5, a filter plate 6 and a turning fin 7;
the frame body 1 is formed by enclosing three upright posts 12 between a top cover 11 and a bottom plate 13, and a submersible pump seat 14 and a filter plate seat 15 are arranged between the three upright posts 12 of the frame body 1 from top to bottom;
the two sides of the filter plate 6 are respectively provided with an upper interface and a lower interface; the screen bag 3 is cylindrical;
the submersible pump 2 is arranged on the submersible pump seat 14 of the frame body 1; the filter plate 6 is arranged on the filter plate seat 15 of the frame body 1;
the lower bag opening of the screen bag 3 is arranged at the upper opening of the filter plate 6; the micro plastic collecting cup 4 is arranged at the lower opening of the filter plate 6;
the flowmeter 5 is arranged between the outlet of the submersible pump 2 and the upper bag opening of the screen bag 3;
the turning fin 7 is provided on one upright 12 of the frame body 1.
The micro plastic collecting cup 4 is in a mesh shape, and the aperture of the mesh is 60 um.
The screen bag 3 is mesh-shaped, and the aperture of the mesh is 60-330 um.
And meshes are arranged on the filter plate 6, and the aperture of each mesh is 2 cm.
The upper opening of the micro plastic collecting cup 4 is provided with threads, and the bottom of the micro plastic collecting cup is provided with a screen.
Referring to fig. 1, the top cover 11 is provided with a hanging ring.
Referring to fig. 1, the flow meter 5 of the present invention is installed between the outlet of the submersible pump 2 and the upper bag opening of the mesh bag 3; the upper mouth of filter 6 is located to the lower sack of screen cloth bag 3, and the export of immersible pump 2, the last sack of screen cloth bag 3 and sack all adopt stainless steel hoop binding off to connect down.
Referring to fig. 1, the micro plastic collecting cup 4 of the present invention is disposed at the lower opening of the filter plate 6, and the screw thread of the upper opening of the micro plastic collecting cup 4 is connected with the lower opening of the filter plate 6 by screw thread.
Referring to fig. 1, in order to prevent the frame body 1 from rotating in the water body and causing the cable winding, the invention arranges a turning fin 7 on one upright post 12 of the frame body 1, and the turning fin 7 is connected with a control rope to limit the rotation of the frame body 1 in the water body.
Examples
The invention works as follows:
preparation work: the invention is arranged on a ship, a hauling rope is tied on a hanging ring of a top cover 11 of a frame body 1, and a control rope is connected on a steering fin 7; a waterproof cable and a power supply are connected to the submersible pump 2; converting the working time of the submersible pump 2 according to the volume water quantity set by the experiment; selecting the aperture of the meshes of the screen bag 3 to be 60 um; and finally determining the water area position of the experiment.
Referring to fig. 1 and 2, step 1, connecting a traction rope on a frame body 1 with a winch on a ship in a determined water area of the ship, starting the winch, submerging the water-saving device to a working depth required by an experiment, turning on a power supply, operating the submersible pump 2, and as can be seen from an arrow in fig. 2, sucking water from a water inlet of the submersible pump 2, passing through a flowmeter 5, entering a screen bag 3, and discharging the water through meshes of a cylindrical screen bag 3, wherein part of the water flows into a micro-plastic collecting cup 4 from a lower bag opening of the screen bag 3 through a filter plate 6, and is discharged through meshes at the bottom of the micro-plastic collecting cup 4; and (3) until the working time set by the submersible pump 2 is reached, the volume water flow through the experiment is V, the power supply is turned off, and the water surface lifting device is lifted out of the water surface by a winch and is vertically placed on a deck.
And 2, collecting the water sample through the screen bag 3 and the micro-plastic collecting cup 4, detaching the screen bag 3 and the micro-plastic collecting cup 4, respectively washing the inner walls of the screen bag 3 and the micro-plastic collecting cup 4 by using ultrapure water, and collecting all washed liquid into a glass container.
Referring to fig. 3, step 3, filtering the liquid in the glass container onto a filter membrane by using a sand core filter, drying the filter membrane in a dryer, observing and picking out suspected micro-plastic particles under a body type microscope to obtain a micro-plastic microscopic picture, looping out the suspected micro-plastic particles under the microscope by using a pen, sending the suspected micro-plastic particles to a micro infrared spectrometer for detection and confirmation, and determining the number of the micro-plastic particles to be recorded as N;
and 4, finally, calculating the concentration of the micro-plastic in the water body, wherein the concentration of the micro-plastic in the water body = N/V.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the present invention is not limited to the embodiments, i.e. all equivalent changes or modifications made according to the spirit of the present invention are still within the scope of the present invention.
Claims (6)
1. The device for detecting the concentration of the micro-plastic in the water body is characterized by comprising a frame body (1), a submersible pump (2), a screen bag (3), a micro-plastic collecting cup (4), a flowmeter (5), a filter plate (6) and a turning fin (7);
the frame body (1) is formed by enclosing three upright posts (12) between a top cover (11) and a bottom plate (13), and a submersible pump seat (14) and a filter plate seat (15) are arranged between the three upright posts (12) of the frame body (1) from top to bottom;
the two sides of the filter plate (6) are respectively provided with an upper connector and a lower connector; the screen bag (3) is cylindrical;
the submersible pump (2) is arranged on a submersible pump seat (14) of the frame body (1); the filter plate (6) is arranged on a filter plate seat (15) of the frame body (1);
the lower bag opening of the screen bag (3) is arranged at the upper opening of the filter plate (6); the micro plastic collecting cup (4) is arranged at the lower opening of the filter plate (6);
the flowmeter (5) is arranged between the outlet of the submersible pump (2) and the upper bag opening of the screen bag (3);
the steering fin (7) is arranged on one upright post (12) of the frame body (1).
2. The device for detecting the concentration of the micro-plastic in the water body according to claim 1, wherein the micro-plastic collecting cup (4) is in a mesh shape, and the aperture of the mesh is 60 um.
3. The device for detecting the concentration of the micro plastic in the water body as claimed in claim 1, wherein the screen bag (3) is in a mesh shape, and the aperture of the mesh is 60-330 um.
4. The device for detecting the concentration of the micro plastic in the water body according to claim 1, wherein the filter plate (6) is provided with meshes, and the apertures of the meshes are 2 cm.
5. The device for detecting the concentration of the micro-plastics in the water body as claimed in claim 1, wherein the bottom of the micro-plastic collecting cup (4) is provided with a screen.
6. The device for detecting the concentration of the micro-plastics in the water body as claimed in claim 1, wherein a hanging ring is arranged on the top cover (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911345328.6A CN111157691A (en) | 2019-12-24 | 2019-12-24 | Detection apparatus for micro-plastic concentration in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911345328.6A CN111157691A (en) | 2019-12-24 | 2019-12-24 | Detection apparatus for micro-plastic concentration in water |
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| Publication Number | Publication Date |
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| CN111157691A true CN111157691A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911345328.6A Pending CN111157691A (en) | 2019-12-24 | 2019-12-24 | Detection apparatus for micro-plastic concentration in water |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525595A (en) * | 2020-12-14 | 2021-03-19 | 云南师范大学 | Sampling and measuring method for micro-plastic in water body |
| CN113552030A (en) * | 2021-07-19 | 2021-10-26 | 国家海洋技术中心 | Expendable marine micro-plastic concentration field measurement device and method |
| CN114457770A (en) * | 2022-02-25 | 2022-05-10 | 西南石油大学 | Underwater micro-plastic collecting device |
| CN114813492A (en) * | 2022-05-09 | 2022-07-29 | 中国海洋大学 | Microscopic Raman in-situ measurement system for underwater micro-plastic |
| CN116296581A (en) * | 2023-05-22 | 2023-06-23 | 暨南大学 | Microplastic vertical sampling device for deep water body |
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| CN110470509A (en) * | 2019-08-28 | 2019-11-19 | 中国科学院武汉植物园 | The micro- plastic collection devices and methods therefor in handheld portable waters |
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Patent Citations (6)
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| CN204377733U (en) * | 2015-01-06 | 2015-06-10 | 福建省淡水水产研究所 | A kind of novel zooplankton harvester |
| CN207625701U (en) * | 2017-10-09 | 2018-07-17 | 南京御水科技有限公司 | Recirculated water intelligent monitoring and controlling device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525595A (en) * | 2020-12-14 | 2021-03-19 | 云南师范大学 | Sampling and measuring method for micro-plastic in water body |
| CN113552030A (en) * | 2021-07-19 | 2021-10-26 | 国家海洋技术中心 | Expendable marine micro-plastic concentration field measurement device and method |
| CN114457770A (en) * | 2022-02-25 | 2022-05-10 | 西南石油大学 | Underwater micro-plastic collecting device |
| CN114813492A (en) * | 2022-05-09 | 2022-07-29 | 中国海洋大学 | Microscopic Raman in-situ measurement system for underwater micro-plastic |
| CN116296581A (en) * | 2023-05-22 | 2023-06-23 | 暨南大学 | Microplastic vertical sampling device for deep water body |
| CN116296581B (en) * | 2023-05-22 | 2024-03-15 | 暨南大学 | Microplastic vertical sampling device for deep water body |
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Application publication date: 20200515 |