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Microplastic floatation grading separation device in wetland deposits and method thereof

A fractional separation and sedimentation technology, applied in separation methods, separating solids from solids with airflow, filtration separation, etc., can solve the problem that fine particles and plant residues cannot be separated by filtration, research cannot be carried out, and microplastic identification Inability to accurately judge problems, to achieve the effect of avoiding fine particles of sediment and plant residues, simple structure and low cost

Pending Publication Date: 2019-03-29
HUAQIAO UNIVERSITY
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

Due to the accumulation of silt in the wetland area, the sediment particles are relatively fine, and a large number of plant residues are mixed in it. The traditional primary flotation method cannot meet its requirements. A large number of fine particles and plant residues cannot be separated by filtration. In the identification of microplastics Unable to accurately judge during the process, which leads to the inability to carry out the research

Method used

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  • Microplastic floatation grading separation device in wetland deposits and method thereof

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Embodiment Construction

[0028] Please check figure 1 , the flotation fractionation and separation device for microplastics in wetland sediments, including an elevated platform 1 , a siphon device, a pump 6 , a screen filter system, an agitator 5 and a recovery container 9 . This siphon device comprises first container 2, second container 4 and siphon tube 3, and this siphon tube 3 connects first container 2 and second container 4; 5 is a magnetic stirrer, the magnetic stirrer includes a magnetic table and a rotor, and the stirring is realized through the cooperation of the magnetic table and the rotor; the first container 2 is placed on the elevated table 1, and the second container 4 is placed on the magnetic table Above, the height of the first container 2 is higher than that of the second container 4; the rotor is placed in the second container 4. The screen filter system includes a filter container 8 and a filter unit 7 arranged in the filter container 8 . The pump 6 is connected to the second ...

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Abstract

The invention discloses a microplastic floatation grading separation device in wetland deposits and a method thereof. The separation method comprises the following steps of charging a filter liquid sodium chloride solution into a first container; putting deposit samples into a second container; putting a rotor in the second container; sucking the sodium chloride solution in the first container into a second container through a siphon; stirring deposits and filter liquid in the second container by a magnetic power stirrer; performing still standing after the stirring; sucking supernatant liquidand suspended matters to a sieve screen filtering system through a pump; filtering micro plastics by a filter unit; recovering the filtered sodium chloride solution into the recovery container; washing away salt bases in the filtering unit; flushing the micro plastics of filtering screens stage by stage in the filtering unit into different containers; after the still standing, performing suctionfiltering on the microplastics by a vacuum pump onto a filter film with square lattices; removing moisture by drying the filtering film. The micro plastics can be accurately and effectively separatedfrom the deposit wet land so as to accurately analyze the pollution condition of the deposit micro plastics.

Description

technical field [0001] The invention relates to a microplastic fractionation and separation device and a separation method thereof, in particular to a microplastic flotation fractionation separation device in wetland sediments and a method thereof. Background technique [0002] Plastics are widely used due to their light weight, durability, and cheapness, but low recycling rates and improper disposal of plastic waste lead to the accumulation of plastics in the environment. It is gradually broken down into fragments until it reaches the millimeter or even micron level and remains in the ecological environment. Microplastics refer to plastic particles with a diameter of less than 5 mm. Studies have found that they are widely distributed in environmental media such as seawater, rivers, lakes, and sediments, and are even found in polar regions. Due to the small particle size of microplastics, many marine organisms, including protozoa, zooplankton, fish, turtles, birds, etc., ea...

Claims

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Application Information

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IPC IPC(8): B01D29/01B01D29/56B07B1/04B07B1/46B07B9/00
CPCB01D29/01B01D29/56B07B1/04B07B1/4609B07B9/00B07B2230/01
Inventor 郭沛涌邓俊
Owner HUAQIAO UNIVERSITY
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