Stirring type synchronous separating device for multi-particle-size microplastics in sediment or soil

Abstract

The invention relates to a stirring type synchronous separating device for multi-particle-size microplastics in sediment or soil. The stirring type synchronous separating device comprises a stirring filter box. A waste liquid collecting box is arranged at the bottom of the stirring filter box. A sediment separating mechanism and a microplastics separating and collecting mechanism are connected between the stirring filter box and the waste liquid collecting box. A primary filter screen is arranged in the middle of the stirring filter box. A stirring mechanism is arranged in the stirring filterbox. The primary filter screen divides an inner cavity of the stirring filter box into a sediment introducing cavity and a sediment separating cavity. The sediment separating mechanism removes fine sediment particles from the soil, microplastics particles in the soil enter the microplastics separating and collecting mechanism, and a plurality of microplastics filter screens in a microplastics collecting box gradually decrease in mesh size from being close to the stirring filter box to being far away from the stirring filter box, so that the microplastics particles with different particle sizesare trapped on the corresponding microplastics filter screens, and the effects of synchronous collecting and separating of the multi-particle-size microplastics particles are achieved.

Description

technical field [0001] The invention relates to environmental pollution monitoring and separation equipment, in particular to a stirring type synchronous separation device for multi-particle diameter microplastics in sediment or soil. Background technique [0002] Microplastics (Microplastics) refer to plastic particles with a diameter of no more than 5 mm, which has become one of the hot issues of international concern. In 2014, the first United Nations Environment Assembly (UNEP1) listed microplastic pollution as one of the top ten global environmental problems to be solved for the first time. In 2015, UNEP2 listed marine microplastics as the second largest scientific issue in the field of environmental and ecological science research, and ranked it with global climate change, ozone depletion and ocean acidification as a major global environmental issue of common concern to scientists around the world. [0003] In some personal care products such as shower gel, facial cle...

AI Technical Summary

Problems solved by technology

Due to the late start of the detection of microplastic particle pollution, the collection equipment and collection methods are still lacking in accuracy and scientificity

The collection equipment is also relatively primitive and outdated. For example, the collection of microplastic particles in soil is a problem worthy of improvement. Now the separation of microplastics in soil is generally carried out on a single-stage filter, and there is no separation of microplastic particles of different particle sizes. Suitable devices for synchronous separation, resulting in low separation efficiency, and there is also the problem of incomplete separation of sediment and microplastic particles

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