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An enrichment device for separating microplastics from environmental soil and sediment

A technology for separation and enrichment of microplastics, which is applied in solid separation, centrifuge, preparation of samples for testing, etc. Less pollution, reducing the effect of agglomeration

Active Publication Date: 2022-02-01
HENAN UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a semi-automatic enrichment device for separating microplastics in environmental soil and sediments, so as to overcome the cumbersome and time-consuming extraction of microplastics in soil in the prior art, low efficiency, low recovery rate, low precision, and poor reliability. Defects

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  • An enrichment device for separating microplastics from environmental soil and sediment
  • An enrichment device for separating microplastics from environmental soil and sediment
  • An enrichment device for separating microplastics from environmental soil and sediment

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Embodiment approach

[0035] As an embodiment, the overflow device 5 is a combination of a circular bottom plate 51 and a hollow cylinder 52, the circular bottom plate 51 is provided with a through hole corresponding to the hollow cylinder 52, and the circular bottom plate 51 and the hollow cylinder 52 are combined. The included angle of the horizontal plane is 5-10°, which is 5° in this embodiment, and the liquid outlet is arranged on the lower side of the circular bottom plate 51, specifically at the lowest connection between the circular bottom plate 51 and the inside of the sample bottle 2, and the sample The liquid outlet of bottle 2 is connected with liquid outlet pipe 12.

[0036] As an implementation, the No. 1 liquid inlet pipe 7 and the No. 2 liquid inlet pipe 8, the No. 3 liquid inlet pipe 20 and the No. 4 liquid inlet pipe 21 are all provided with a peristaltic pump 6. In this embodiment, the peristaltic pump is Multi-channel peristaltic pump. The outlet pipe 12, the No. 1 liquid inlet...

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Abstract

The invention belongs to the technical field of solid waste treatment, and in particular relates to an enrichment device for separating microplastics in environmental soil and sediment. The device includes a flotation device, a centrifugal device, a re-flotation device and a microplastic separation and enrichment device, and the flotation device includes a stirrer, a sample bottle, an overflow device, a No. 1 liquid storage tank and a No. 2 liquid storage tank; The re-flotation device includes a reaction bottle, a No. 3 liquid storage tank, and a No. 4 liquid storage tank. The reaction bottle is sequentially provided with a slant plate, a centrifuge tube support and a liquid leakage device, and the microplastics are separated. Enrichment devices include Buchner funnels, suction flasks, vacuum pumps and petri dishes. The invention improves the enrichment and concentration ability, and solves the shortcomings of traditional microplastic separation and flotation methods such as cumbersome operation, unclean separation and low recovery rate.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and in particular relates to an enrichment device for separating microplastics in environmental soil and sediment. Background technique [0002] After plastic products disintegrate in terrestrial and aquatic environments, tens of thousands of microplastic particles are eventually formed. Microplastics are plastic pellets, microfibers, plastic granules, foamed plastics or films with a size between 0.2-5.0 mm, and are an increasing class of emerging pollutants in the environment. [0003] The pollution and hazards of microplastics in the water environment have attracted the attention of the scientific community. In recent years, many scholars have done a lot of scientific research. At present, research on microplastic pollution at home and abroad mainly focuses on the marine environment, while there are very few studies on soil microplastic pollution. Therefore, in the research on s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B04B5/10B03D1/00G01N1/28
CPCB04B5/10B03D1/00G01N1/28
Inventor 张成丽张伟平钱静陈志凡雷雨辰马建华
Owner HENAN UNIVERSITY
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