A device for separating microplastics in soil
A separation device and microplastic technology, applied in solid separation, plastic recycling, mechanical material recycling, etc., can solve the problems of cumbersome operation steps, time-consuming, environmentally harmful, etc. simple effect
Active Publication Date: 2022-07-12
YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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Problems solved by technology
However, the density separation method needs to use a large amount of salt solution, some of which are harmful to the environment, such as sodium iodide, zinc chloride, etc., and the operation steps are cumbersome and time-consuming
Method used
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[0016] The present invention will be described below with reference to specific examples. Those skilled in the art can understand that these examples are only for illustrating the present invention, and they do not limit the scope of the present invention in any way.
[0017] A device for separating microplastics in soil, such as figure 1 As shown, it includes a shell 1, a blower 5, a residue collection box 6, a layered multi-stage screen 7, a liquid container 10 and an air pump 9; the shell 1 is a cuboid structure with a hollow cavity, and the upper part of the shell 1 There is a feeding hopper 2 with openings at the upper and lower ends, and between the bottom of the feeding hopper 2 and the shell 1, a screen 3 and an oscillation device 4 are arranged in turn. In this embodiment, the screen size of the screen 3 is 5mm, Separation of microplastics with larger particle size;
[0018] The blower 5 is located on one side of the casing 1 and communicates with the hollow cavity ...
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The invention discloses a device for separating microplastics in soil, comprising a casing, a blower, a residue collection box, a layered and multi-stage screen, a liquid container and an air pump; a feeding hopper is arranged above the casing, and the feeding hopper is connected to the casing A screen and an oscillating device are arranged between the bodies in sequence; the blower is located on one side of the casing and communicates with the hollow cavity of the casing; The layered multi-stage screen is arranged at the lower part of the hollow cavity of the shell; the lower part of the layered multi-stage screen is communicated with a liquid container through a pipeline, and the liquid container is filled with saturated salt water and the pipeline extends to the saturated salt water. water; the air pump is connected to the upper air chamber of the liquid container through a pipeline, which can pump the samples to be separated that do not fall into the residue collection box to the top of the layered multi-stage sieve, and then the sieve falls into the liquid container for further separation . The invention has the advantages of simple structure and high separation speed, and the sample does not need complicated pretreatment, and the amount of salt solution is small.
Description
technical field [0001] The invention belongs to the technical field of microplastic separation, and in particular relates to a device for separating microplastics in soil. Background technique [0002] At present, plastics have caused serious pollution to the environment due to the large amount of use, difficult degradation and low recycling rate, and large pieces of plastic will form smaller plastic particles under conditions such as solar radiation, mechanical force and biological action. Among them, plastic particles with a particle size of less than 5mm are defined as microplastics. The migration and potential hazards of microplastics in the environment have attracted widespread attention in recent years. However, the research on microplastics still lacks a unified and standardized research method. Therefore, the search for economical, reliable and simple methods is still an important part of microplastics research. At present, the research on microplastics mainly foc...
Claims
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IPC IPC(8): B07B1/04B07B1/46B08B5/04B08B13/00
CPCB07B1/04B07B1/46B08B5/04B08B13/00Y02W30/62
Inventor 栾传磊
Owner YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI