Ethylene can be obtained by cracking petroleum, which is the basic raw material of organic compounds such as synthetic plastics. Petroleum resources are limited. With the expansion of the use of plastics, more and more consumption of petroleum resources and increasingly exhausted petroleum resources are in contradiction.
Stress during treatment
Although China's plastic industry develops late, it has become a big country in plastic production, consumption, and import and export. The main sources of waste plastics in China include plastic film, daily plastic products, plastic bags, and agricultural mulching. With the increasing consumption of plastic products, more and more waste plastics need to be disposed of properly.
At present, the laws and regulations on recycling and utilization of waste plastics are not perfect. The increasing situation of waste plastics needs the establishment and improvement of relevant management systems and the strengthening of government supervision.
At present, sanitary landfill and incineration are the main treatment methods for waste plastics in China. But plastic products in the natural environment are difficult to degrade, incineration produces harmful gases, and can not achieve effective secondary utilization. Manual recovery, centralized reclassification, and processing are the main modes of plastic recycling. However, plastic products are more and more diverse in raw material properties and properties, making it more difficult to recycle. In order to achieve the desired recycling effect, it is necessary to carry out a more detailed identification and classification of waste plastics.
Inconvenience and environmental protection, more people will choose convenience; In addition, the classification method mentioned in the technical restrictions also requires people to have a high awareness of environmental protection to be implemented, but the actual awareness of plastic classification is not popular. Plastic recycling also needs a higher awareness of environmental protection.
The impact of microplastics is far from limited to Marine life, as the particles are entering the food chain as their diameter continues to shrink. Microplastics and other residues have been found in mussels along the British coast and in supermarkets, according to a study published by the University of Hull. The Earth Environment Institute at the University of Arizona tested 259 bottled water from 11 leading brands in 2018 and found that about 93% showed signs of microplastic contamination, with an average of 325 microplastic particles per liter of water. The irony of these findings is that humans, who claim to be at the top of the food chain, consume microplastics in their water and food every day, even more than other organisms because of the enrichment of the food chain.
While polluting the land and Marine environment, some plastic waste also breaks down into smaller particles than normal plastic particles floating in the air and entering the body through the respiratory tract, which is more harmful than car exhaust.