How to solve the problem of waste plastic recycling?
Plastic, which is a polymer material, has quickly become popular in the world because of its excellent properties and wide application fields since its invention, and has surpassed steel and become a popular material in a very short period of time. Until now, the proportion of plastic used is still outstanding, and as other members of the plastic family continue to come out, its application field will become more extensive.
For example: polyethylene plastic materials (PE, including HDPE and LDPE) are commonly used in packaging materials; polypropylene plastic materials (PP) are commonly used in turnover boxes; polystyrene plastic materials (PS) are commonly used in foam liners and fast food lunch boxes. ; Toys, containers, etc. are commonly used in polyvinyl chloride plastic materials (PVC); beverage bottles are commonly used in polyester plastic materials (PET) and so on.
These plastics greatly facilitate our lives, and the invention of plastics can be said to directly affect our way of life and quality of life.
However, our large-scale use of plastics has also caused many problems, such as the large amount of oil consumed in the manufacture of plastics, and the problem of "white pollution" caused by waste plastics.
Discarded plastics do too - incineration, landfilling, recycling, and direct disposal. We know that plastic is a substance that is difficult to degrade. If it is abandoned directly, it will cause great harm to our environment, especially the impact on agriculture and biology.
From the perspective of agriculture, the accumulation of various plastic films mixed into the soil will affect the absorption of water and nutrients by crops, resulting in reduced crop yields and deterioration of the soil environment. From a biological point of view, plastic products discarded on land or water are swallowed by animals as food, or entangled in animals, resulting in death of animals, and if we eat these animals, we will also ingest plastic particles into our in vivo.
Fortunately, uncontaminated plastics can be recycled and reused. Therefore, finding a better plastic recycling process can not only solve the two major problems of plastics, but also generate more economic benefits.
The recycling of plastics has to go through three steps: classified collection, electrostatic separator after crushing, and resource regeneration. Among them, the proportion of plastic recycling determined by better plastic sorting and purification process also determines the benefits that can be obtained by participating in plastic recycling.
There are many kinds of sorting technologies, such as wind method, friction bounce method, electrostatic sorting machine, color separation method, etc.
The corresponding sorting equipment is wind sorter, silicone rubber sorter, plastic electrostatic sorter, and plastic color sorter.
The corresponding purposes are: removal of light impurities in plastics, removal of silicone rubber in plastics, material separation of mixed plastics, and separation of plastic colors.
Through these plastic sorting processes, electrostatic sorting machines, the low-value plastics in the past are valuable, the plastics that could not be sold in the past can be sold, the high-cost separation methods in the past have reduced the cost, and the low recycling ratio and quality in the past can now also be solved. .
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