CN222994066U - An in-situ multi-link classification rapid sampling and separation device for microplastics - Google Patents

Abstract

The utility model discloses an in-situ multi-stage rapid sampling and separation device for microplastics, which comprises a first-stage processing device, a second-stage processing device and several collection bottles; and the first and second-stage processing devices are both composed of a three-necked bottle, a vacuum pump, a water collecting box and a valve; and a first water inlet bin is arranged in the first-stage processing device, and a second water inlet bin is arranged in the second-stage processing device; the first and second-stage processing devices of the utility model are both detachable parts, which are convenient for on-site assembly in the water area; the utility model performs a primary separation on microplastics through the first-stage processing device, and performs a secondary or multi-stage separation on microplastics through the second-stage processing device; the utility model solves the problem of collecting water samples in the wild, filtering microplastics in water samples on-site in the water area, and further completing classification while filtering, and the utility model will greatly improve the efficiency of water quality detection work, and has the advantages of being portable, easy to install and capable of completing filtering and classification.

Description

In-situ multi-connection grading rapid sampling and separating device for microplastic

Technical Field

The utility model relates to the technical field of environmental protection and water quality detection, in particular to an in-situ multi-connection grading rapid sampling and separating device for microplastic.

Background

The water quality detection is an important link of water quality management and water quality assessment by environmental protection departments, when the water quality detection is carried out in the prior art, because detection equipment is not easy to carry, water quality detection workers are often required to collect water samples in the field, a large number of water sample collection bottles are brought back to a laboratory to carry out detection, micro-plastics in the water samples are detected through filtration and further classification, only the micro-plastics on filter membranes with different densities are required to be separated and remained in the detection process, the rest water body has no other effects, the burden of sampling personnel can obviously be aggravated when a large number of water samples are brought back to the laboratory, the defects of high labor intensity, long detection period and reduced detection efficiency exist, and the detection cost is increased.

In addition, the water sample collected in the field environment has more impurity interference, and along with the standard improvement of the measurement of the microplastic in the water quality, the microplastic is required to be subjected to multistage separation when the sample for water quality detection is processed, for example, the content of the microplastic with the small size of 20-330 μm is required to be separated from a certain water area, and the problem is how to implement water sample collection in the field, filter the microplastic in the water sample in the water area on site, and further finish classification while filtering, so that the efficiency of water quality detection work can be greatly improved.

Disclosure of Invention

The utility model aims to provide an in-situ multi-connection grading rapid sampling and separating device for microplastic, which aims at the defects of the prior art and comprises a first-stage processing device, a second-stage processing device and a plurality of acquisition bottles, wherein the first-stage processing device and the second-stage processing device are respectively composed of three bottles, a vacuum pump, a water collecting tank and a valve;

The first-stage treatment device and the second-stage treatment device are detachable pieces, so that the assembly in the water area is convenient to complete;

The first-stage treatment device is connected with an extraction opening of a three-mouth bottle by the vacuum pump, a water outlet of a first water inlet bin is sequentially connected with a valve and a water inlet of the three-mouth bottle by a hose, and a water collecting tank is connected with a water outlet of the three-mouth bottle;

The second-stage treatment device is connected with an extraction opening of a three-mouth bottle by the vacuum pump, a second water outlet of a second water inlet bin is sequentially connected with a valve and a water inlet of the three-mouth bottle by a hose, and a water collecting tank is connected with a water outlet of the three-mouth bottle;

The utility model installs filter membranes with different calibers in the filter membrane clamp of the collection bottle, and locates the collection bottle on the first collection bottle seat of the first water inlet bin and the second collection bottle seat of the second water inlet bin through the hollow bottle plug.

The utility model carries out primary separation on the microplastic by a first-stage treatment device, and carries out secondary or multistage separation on the microplastic by a second-stage treatment device;

The utility model solves the problems of carrying out water sample collection in the field, filtering microplastic in the water sample in the water area on site, and further completing classification while filtering.

The technical scheme for realizing the aim of the utility model is as follows:

The utility model comprises a first-stage treatment device, a second-stage treatment device and a collection bottle;

The first-stage treatment device consists of a three-mouth bottle, a vacuum pump, a water collecting tank, a valve and a first water inlet bin, wherein the bottle top of the three-mouth bottle is provided with an extraction opening, the bottle body is provided with a water inlet, and the bottle bottom is provided with a water outlet;

The vacuum pump is connected with the air extraction opening of the three-mouth bottle, the water outlet of the first water inlet bin is sequentially connected with the valve and the water inlet of the three-mouth bottle through a hose, and the water collecting tank is connected with the water outlet of the three-mouth bottle;

The second-stage treatment device consists of a three-mouth bottle, a vacuum pump, a water collecting tank, a valve and a second water inlet bin, wherein the top of the second water inlet bin is provided with three second collecting bottle seats side by side, the bottoms of the three collecting bottle seats are provided with second water outlets which are communicated through hoses;

The bottle mouth of the collecting bottle is provided with a filter membrane clamp and a hollow bottle plug, the collecting bottle is provided with a plurality of pieces, and the collecting bottle is arranged on a first collecting bottle seat of a first water inlet bin and a second collecting bottle seat of a second water inlet bin through the hollow bottle plug.

Drawings

FIG. 1 is a schematic diagram of a first stage treatment apparatus according to the present utility model;

FIG. 2 is a schematic diagram of a second stage treatment apparatus according to the present utility model;

Fig. 3 is a schematic structural view of the collection bottle of the present utility model.

Detailed Description

The utility model will be further illustrated with reference to specific examples. It should be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the teachings of the present utility model, and such equivalents are intended to fall within the scope of the utility model as defined in the appended claims.

The utility model works as follows:

On-site assembly of the device:

Referring to fig. 1, 2 and 3, the on-site assembly of the first stage treatment apparatus 1 and the second stage treatment apparatus 2 is performed on site in a water area to be sampled;

The first-stage treatment device 1 is connected with an extraction opening 41 of a three-mouth bottle 4 by the vacuum pump 5, a water outlet 12 of a first water inlet bin 10 is sequentially connected with a valve 7 and a water inlet 42 of the three-mouth bottle 4 by a hose, and a water collecting tank 6 is connected with a water outlet 43 of the three-mouth bottle 4;

The second-stage treatment device 2 of the utility model is connected with the extraction opening 41 of the three-mouth bottle 4 by the vacuum pump 5, the second water outlet 22 of the second water inlet bin 20 is sequentially connected with the valve 7 and the water inlet 42 of the three-mouth bottle 4 by a hose, and the water collecting tank 6 is connected with the water outlet 43 of the three-mouth bottle 4;

The vacuum pump 5 is connected with the electric cabinet, and the whole device is cleaned by using pure water to check the connection of all the components, the residual liquid in the device is pumped out, and the air tightness of the vacuum pump 5 and the device is checked.

The first stage treatment device 1 is adopted to carry out first stage separation on the microplastic:

Referring to fig. 1 and 3, a collection bottle 3 is selected, water sample to be detected is injected, a filter membrane of 330 mu m is filled in a filter membrane clamp 31 of the collection bottle 3, and a hollow bottle stopper 32 is assembled for standby;

Closing the valve 7, and loading the collecting bottle 3 with the 330 mu m filter membrane on the first collecting bottle seat 11 of the first water inlet bin 10 to keep the hollow bottle stopper 32 and the first collecting bottle seat 11 sealed;

Starting a valve 7, starting a vacuum pump 5, and carrying out suction filtration on the water sample in the acquisition bottle 3 until the water sample in the acquisition bottle 3 completely flows into the water collection tank 6 after passing through a 330 mu m filter membrane, a first acquisition bottle seat 11 and a three-port bottle 4;

Closing the valve 7, closing the vacuum pump 5, removing the filter membrane clamp 31 on the acquisition bottle 3, recording and sealing, and checking the micro-plastics filtered on the 330 mu m filter membrane to finish the primary separation.

The second-stage treatment device 2 is adopted to carry out the second-stage separation of the microplastic:

referring to fig. 2 and 3, three collection bottles 3 are selected, water samples which flow into a water collection tank 6 after primary separation are evenly injected into the three collection bottles 3, filter membranes of 250 mu m, 100 mu m and 20 mu m are respectively filled in filter membrane clamps 31 of the three collection bottles 3, and hollow bottle stoppers 32 are respectively assembled for later use;

Closing the valve 7, sequentially loading the collection bottles 3 with 250 μm, 100 μm and 20 μm filter membranes onto three second collection bottle seats 21 of the second water inlet bin 20,

The hollow bottle stopper 32 and the second collecting bottle seat 21 are kept sealed, and the clamp of the filter membrane clamp 31 is checked to be clamped and buckled well so as to prevent liquid leakage;

Starting a valve 7, starting a vacuum pump 5, and carrying out suction filtration on water samples in the three collection bottles 3 until the water samples in the respective collection bottles 3 flow into a water collection tank 6 after passing through 250 mu m, 100 mu m and 20 mu m filter membranes, a first collection bottle seat 11 and a three-mouth bottle 4;

Closing the valve 7, closing the vacuum pump 5, removing the filter membrane clamp 31 on the acquisition bottle 3, recording and sealing, and checking the micro plastics filtered on the filter membranes of 250 mu m, 100 mu m and 20 mu m to finish the secondary or multistage separation.

The filter membrane was subjected to a fractionation assay:

Returning to a laboratory, taking out the micro-plastics trapped above for the filter membranes with different calibers, filling the micro-plastics into a blue-cap bottle, and adding 500 ml pure water to prepare four different solutions. During detection, the liquid in the bottle is uniformly shaken, one drop of liquid is sucked out by a disposable straw and placed on a glass slide, the liquid is observed by a microscope, a photo is recorded, the photo taken by the microscope is analyzed by imageJ, the size of each particle is calculated, and the proportion of the micro plastics in each grade is counted.

According to the utility model, the purposes of carrying out water sample collection in the wild, filtering the microplastic in the water sample on site in the water area and further completing classification at the same time of filtering are solved, and the utility model greatly improves the efficiency of water quality detection work and has the advantages of portability, easy installation and completion of filtering classification.

Claims (1)

1. The in-situ multi-connection grading rapid sampling and separating device for the microplastic is characterized by comprising a first-stage processing device (1), a second-stage processing device (2) and a collecting bottle (3);

The first-stage treatment device (1) consists of a three-mouth bottle (4), a vacuum pump (5), a water collecting tank (6), a valve (7) and a first water inlet bin (10), wherein an extraction opening (41) is formed in the bottle top of the three-mouth bottle (4), a water inlet (42) is formed in the bottle body, and a water outlet (43) is formed in the bottle bottom;

The vacuum pump (5) is connected with an extraction opening (41) of the three-mouth bottle (4), a water outlet (12) of the first water inlet bin (10) is sequentially connected with a valve (7) and a water inlet (42) of the three-mouth bottle (4) through a hose, and the water collecting tank (6) is connected with a water outlet (43) of the three-mouth bottle (4);

the second-stage treatment device (2) consists of a three-mouth bottle (4), a vacuum pump (5), a water collecting tank (6), a valve (7) and a second water inlet bin (20), wherein three second collecting bottle seats (21) are arranged on the top of the second water inlet bin (20) side by side, second water outlets (22) are arranged at the bottoms of the three collecting bottle seats, the second water outlets (22) are communicated through hoses, the vacuum pump (5) is connected with an air extracting opening (41) of the three-mouth bottle (4), the second water outlets (22) of the second water inlet bin (20) are sequentially connected with the valve (7) and a water inlet (42) of the three-mouth bottle (4) through hoses, and the water collecting tank (6) is connected with a water outlet (43) of the three-mouth bottle (4);

The bottle mouth of the collection bottle (3) is provided with a filter membrane clamp (31) and hollow bottle stoppers (32), the collection bottle (3) is provided with a plurality of pieces, and the collection bottle (3) is arranged on a first collection bottle seat (11) of a first water inlet bin (10) and a second collection bottle seat (21) of a second water inlet bin (20) through the hollow bottle stoppers (32).