Check patentability & draft patents in minutes with Patsnap Eureka AI!

Integrated micro-plastic separation device for coastal sediments and micro-plastic collection method

A separation device and sediment technology, applied in the field of water treatment, can solve problems such as difficulty in obtaining stable and accurate concentration values, deviation of microplastic pollution characteristics, poor separation effect stability, etc., to reduce human intervention, reduce manpower and material costs, Improvement of recovery efficiency and work efficiency

Inactive Publication Date: 2020-05-19
ZHEJIANG SHUREN COLLEGE ZHEJIANG SHUREN UNIV
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of flotation solution selection, sodium chloride solution is widely used, and some scholars have chosen natural seawater, sodium polytungstate and sodium iodide to elute microplastics; however, sodium polytungstate and sodium iodide will affect the environment. Pollution and high economic cost
Some scholars have developed a columnar separation device to separate microplastics, but there are also disadvantages such as high cost, cumbersome operation, and poor stability of the separation effect. Stable and accurate concentration values ​​that allow us to bias the pollution profile of microplastics

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Integrated micro-plastic separation device for coastal sediments and micro-plastic collection method
  • Integrated micro-plastic separation device for coastal sediments and micro-plastic collection method
  • Integrated micro-plastic separation device for coastal sediments and micro-plastic collection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take the collection test of microplastics in the coastal sediments of Zhoushan, Zhejiang Province at 122°09.344 east longitude and 29°51.531 north latitude as an example:

[0030] (1) Sampling: Randomly select a section of the coast for sampling to obtain sediment samples.

[0031] (2) Pretreatment: Filter out large plastics, dead branches, stones, glass slag and other sundries in the sediment sample through a 5-mesh stainless steel screen, and identify the sediment category as quartz sand, weigh 100.00g, and Dry at 110°C for 2 hours, take it out, and cool it down to obtain the sediment to be separated, which weighs again to be 96.41g, and the calculated water content is 3.59%.

[0032] (3) Separation: Adjust the partition control knob 2 to make the central partition 1 in the separation cylinder B parallel to the cylinder body of the separation cylinder B, pour the sediment to be separated obtained above into the separation cylinder B, and pour saturated NaCl Solution,...

Embodiment 2

[0036] Take the collection test of microplastics in the coastal sediments of Nanji Island, Zhejiang Province at 122°06.805 east longitude and 27°46.045 north latitude as an example:

[0037] (1) Sampling: Randomly select a section of the coast for sediment sampling to obtain sediment samples.

[0038] (2) Pretreatment: Filter out large plastics, dead branches, stones, glass slag and other sundries in the sediment sample through a 1-mesh stainless steel screen, and identify the sediment type as a mixture of quartz sand and gravel, weighing 300.00 g, dried at 100°C for 1 hour, taken out, and cooled to obtain the sediment to be separated, which was weighed again to be 290.02g, and the calculated moisture content was 3.32%.

[0039] (3) Separation: Adjust the partition control knob 2 to make the central partition 1 in the separation cylinder B parallel to the cylinder body of the separation cylinder B, pour the sediment to be separated obtained above into the separation cylinder B...

Embodiment 3

[0043] Performance comparison of the integrated separation device method of the present invention with pipette filtration, density and direct pour methods.

[0044] (1) Sample collection

[0045] Sediment sampling points and groups are shown in Table 1:

[0046] Table 1: Seabed sediment sampling points and groups

[0047]

[0048] (2) Experimental method

[0049] Divide all the samples into large particle size (>0.5mm) and small particle size (<0.5mm) through the sieve. A total of four methods are used to extract microplastics, including integrated separation device method and pipette filter method , density method, direct pouring method.

[0050] Method ①: integrated separation device method, adopt the method of embodiment 1

[0051] Method ②: Pipette gun filtration method

[0052] Filter out large plastics, dead branches, stones, glass slag and other debris in the measured sediment through a 5-mesh stainless steel screen, identify the type of sediment, weigh it, dry ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Apertureaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses an integrated micro-plastic separation device for coastal sediments and a micro-plastic collection method, and belongs to the technical field of water treatment. The device comprises a fixator, a separation cylinder, a collection bottle, a central partition plate, a partition plate control knob, a stirring propeller, a motor, a cylinder switch, a filter screen plate, an upper welding nozzle, a filter membrane and a vacuum pump. The device has the characteristics of convenience in operation, economy, environmental protection, high separation efficiency, firmness and durability when being used for collecting micro-plastics.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an integrated microplastic separation device for coastal sediments and a microplastic collection method. Background technique [0002] Since it was defined in the journal "Science" in 2004, microplastics (that is, plastics gradually decompose into fragments or particles with a size smaller than 5mm under the influence of physical action, biodegradation, photodegradation and other processes) have become a new type of persistent organic matter. Pollutants have the characteristics of wide distribution, slow degradation, and complex toxicology. In 2015, they were listed as the second largest scientific issue in the field of environmental and ecological science research, becoming a major global environmental issue alongside global climate change, ozone depletion, and ocean acidification. The problem has received more and more attention from the international commun...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01D21/26B01D21/02B01D29/085B01D36/04G01N21/84G01N1/34
CPCB01D21/26B01D21/02B01D29/085B01D36/04G01N21/84G01N1/34B01D61/14B01D2311/2642B01D2311/04B01D2311/12B01D61/16B01D61/18B01D2313/20B01D21/262B01D21/0012Y02W30/62B01D2313/502B01D21/265B01D2257/70B01D2313/2061
Inventor 陆胤翁文勇叶明立玛青许晓路张德勇
Owner ZHEJIANG SHUREN COLLEGE ZHEJIANG SHUREN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com