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Microplastics flotation separation device and application method thereof

A separation device and technology for microplastics, applied in the restoration of polluted soil, etc., can solve the problem of difficulty in extracting microplastics, and achieve the effects of strong environmental friendliness, effective separation, and strong pertinence

Inactive Publication Date: 2018-08-24
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since microplastics can be tightly adsorbed on the surface of soil particles, it is difficult to extract microplastics in soil by the above-mentioned flotation method.

Method used

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  • Microplastics flotation separation device and application method thereof
  • Microplastics flotation separation device and application method thereof

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Embodiment Construction

[0018] The present invention will be further explained in detail below in conjunction with the accompanying drawings and specific embodiments, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0019] Such as figure 1 As shown, the microplastic flotation separation device of the present invention includes a high-level water tank 1, a reactor 2, a sedimentation tank 3, an open channel 4 and a filter 5 connected in sequence; wherein, distilled water is stored in the high-level water tank 1, and at the outlet of the high-level water tank 1 A valve 11 is provided; the reactor 2 is provided with an agitator 7, and the outlet of the reactor 2 is provided with a timing valve 12; the entrance of the open channel 4 is provided with a timing valve 12, which can control the precipitation time of the liquid; There is a filter membrane 9, the filter membrane 9 is a nitrocellulose filter membrane, the filter 5 is comp...

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Abstract

The invention relates to a microplastics flotation separation device. The microplastics flotation separation device comprises a high water tank, a reactor, a sedimentation basin, an open channel and afilter which communicate with one another in sequence. A valve is arranged between the high water tank and the reactor, a valve is arranged between the reactor and the sedimentation basin, and a valve is arranged between the sedimentation basin and the open channel. The high water tank is loaded with water. A stirring device is arranged in the reactor. The filter is connected with an air pump used for applying negative pressure and comprises a filter bowl communicating with the open channel, a liquid collection device used for receiving filtered liquid, and a filter film arranged between thefilter bowl and the liquid collection device. The liquid collection device is connected with the air pump. The flotation separation device is targeted, and thus microplastics can be separated from samples more effectively; the microplastics flotation separation device is high in separation efficiency, and the microplastics separation rate can reach 90% of above; and distilled water is used as a solvent, and the environmental friendliness is high.

Description

technical field [0001] The invention relates to a separation device, in particular to a microplastic flotation separation device and a method for using the device. Background technique [0002] Plastic pollution has become a global environmental problem, and "microplastic" pollution with a particle size of less than 5 mm has become a new global environmental disaster that has attracted much attention. Due to its unique physical and chemical characteristics, microplastic pollution is far more harmful to the soil environment than large plastic waste. Microplastics can not only harm the soil environment by releasing their own toxic chemicals, but also harm the ecological environment by accumulating heavy metals, persistent organic pollutants, and new highly toxic organic pollutants in the environment on the surface. In addition, as a carrier of alien species and potential pathogenic bacteria, it brings serious harm to the ecosystem. [0003] Low-density polyethylene (PE) and ...

Claims

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Application Information

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IPC IPC(8): B09C1/02
CPCB09C1/02
Inventor 牛丽华赵瑞琪李轶张弛顾金飞
Owner HOHAI UNIV
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