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Micro-plastic separation and recovery device and using method thereof

A technology for separation and recovery of microplastics, which is applied in the direction of plastic recycling and recycling technology, etc. It can solve problems such as uneven joints of the device, long separation process time, and easy adhesion of microplastics, so as to save time, make the device simple and convenient, good effect

Pending Publication Date: 2021-04-30
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Continuous separation and enrichment of microplastics in sediments is carried out by means of circulation. However, the separation process takes a long time, and the cycle time must be at least 3 hours, and a stirring device is required. The joints of each device are not smooth, and microplastics are easy to adhere to the separation. Column walls reduce separation efficiency

Method used

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  • Micro-plastic separation and recovery device and using method thereof
  • Micro-plastic separation and recovery device and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028]100 5 mm PVC, PET, PS, PE, and PP plastic are well mixed with 5 g of sand, simulate deposit samples; open the glass plug 5, first add the sample to be isolated into the U-shaped separation column 4, then join Different concentrations of APG0810 flotation solution, cover glass plug 5; add 0.45 μm aperture filter in the hierarchical filter device 6; open the gas pump 1, and then open the filtration pump 9, the regulated gas flow is 200 ml / min, the gas from aeration Stone 3 is constantly incurred, forming a gas turbulence to produce a stirring effect, and the foam with microcapstine particles passes through the U-shaped pipe 6, and the foam is directly converted into droplets under liquid collection column 7 The microchang is trapped on the filter membrane. Experiment found that when the APG0810 concentration is 0.05 g / L, the amount of foam is sufficiently supported to complete the microcapstine collection. When the APG0810 concentration reaches 0.5 g / L, the 5mm microcapsti...

Embodiment 2

[0030]100 3 mm PVC, PET, PS, PE and PP plastic are well mixed with 5 g of sand, simulate sediment samples; open the glass plug 5, first add the sample to be isolated into the U-shaped separation post 4, then join Different concentrations of APG0810 flotation solution, cover glass plug 5; add 0.45 μm aperture filter in the hierarchical filter device 6; open the gas pump 1, and then open the filtration pump 9, the regulated gas flow is 200 ml / min, the gas from aeration Stone 3 is constantly incurred, forming a gas turbulence to produce a stirring effect, and the foam with microcapstine particles passes through the U-shaped pipe 6, and the foam is directly converted into droplets under liquid collection column 7 The microchang was trapped on the filter membrane. Experiment found that when the APG0810 concentration was 0.05 g / l, the amount of foam was sufficiently supported to complete the microcapstine collection. When the APG0810 concentration reached 0.7 g / L, 3 mm microcapstine...

Embodiment 3

[0032]100 500 μm PVC, PET, PS, PE, and PP plastic are well mixed with 5 g of sand, simulate sediment samples; open the glass plug 5, first add the sample to be isolated into the U-shaped separation column 4, then add Different concentrations of APG0810 flotation solution, cover glass plug 5; add 0.45 μm aperture filter in the hierarchical filter device 6; open the gas pump 1, and then open the filtration pump 9, the regulated gas flow is 200 ml / min, the gas from aeration Stone 3 is constantly incurred, forming a gas turbulence to produce a stirring effect, and the foam with microcapstine particles passes through the U-shaped pipe 6, and the foam is directly converted into droplets under liquid collection column 7 The microchang was trapped on the filter, and the experiment found that when the APG0810 concentration was 0.05 g / l, the amount of foam was sufficiently supported to complete the microcapstine collection. When the APG0810 concentration reached 0.9 g / L, 500 μM microcap...

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Abstract

The invention belongs to the technical field of micro-plastic recovery, and particularly relates to a micro-plastic separation and recovery device and a using method thereof. The device comprises an air pump, an air inlet pipe, an aeration stone, a U-shaped separation column, a glass plug, a graded filtering device, a liquid collecting column, an air outlet pipe, and a suction filtration pump; the bottom of the left side of the U-shaped separation column is provided with the aeration stone; the bottom of the left side of the U-shaped separation column is connected with the air pump through the air inlet pipe; the glass plug is arranged at the top of the U-shaped separation column; the graded filtering device is arranged at the bottom of the right side of the U-shaped separation column; the liquid collecting column is arranged at the bottom of the graded filtering device; and the bottom of the liquid collecting column is connected with the suction filtration pump through the air outlet pipe. The micro-plastic separation and recovery device is reasonable in structure, the device is simpler and more convenient in separation of sediments, density solution is not needed, flotation solution is APG0810 solution with low concentration, the separation recovery rate can be close to 100%, and the effect is better; and the separation and collection process of micro-plastics can be completed within 3 minutes, so that the efficiency is higher, and the time is saved.

Description

Technical field[0001]The present invention relates to the field of microcapstine recovery, and is specifically a microcaphyloid separation recovery apparatus and a method of use.Background technique[0002]Since the end of the plastic product, it has risen from 1.7 million tons in the first 1945 to about 335 million tons in 2016 (Plastic Europe 2017), global plastic production presents an index growth. Studies have shown that approximately 80% of plastics have been abandoned in the landfill or natural environment, and most of these plastics are present in various sediments. These plastics are broken and decomposed by physical, chemical and biological processes, forming a plastic particle having less than 5 mm, which is slightly particle diameter, and it is difficult to perform accurate qualitative quantitative analysis. Therefore, how to separate microchang from deposits has become a pair A primary problem for research on microcomery.[0003]The foam flotation method is a technique that...

Claims

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Application Information

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IPC IPC(8): B29B17/02
CPCB29B17/02B29B2017/0248Y02W30/62
Inventor 王宪泽范世伟吴敬慧王驰黄微竹郑洁敏周国岩霍明昕
Owner NORTHEAST NORMAL UNIVERSITY
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