The disposal of waste BOPP color synthetic paper is an important issue involving environmental protection and resource recovery. For this waste material, the following main treatment methods can be adopted:
First, recycling and reuse
1. Physical recycling:
Crushing, cleaning, screening and classification: The waste BOPP color synthetic paper is broken, cleaned, screened and classified, and other pretreatment steps to remove impurities and improve the quality of recycled materials.
Re-granulation: The pre-treated waste plastic is re-granulated by melting extrusion and other processes to generate recycled plastic particles. These particles can be used alone or in combination with new materials for the manufacture of new plastic products, such as films, packaging materials, etc.
Composite modification and utilization: composite modification of recycled plastic particles with other materials (such as asphalt, building materials) for road laying, building materials and other fields. This method can broaden the application range of recycled plastics and improve their economic value.
2. Chemical Recycling:
Pyrolysis and cracking: by isolating air heating cracking, catalytic cracking or biological enzyme decomposition, waste plastics are decomposed into small molecules or oligomers, which are used as new chemical raw materials. Although this method is still in the industrial research, it has broad application prospects.
Second, harmless treatment
1. Incineration and Energy Use:
Waste plastics are incinerated and the heat generated is used for energy recovery, such as generating electricity or providing energy for energy-using enterprises. However, the incineration process can produce toxic and harmful gases, so it is necessary to ensure that the incinerator is efficient and the exhaust gas treatment is in place to avoid harm to the environment and human health.
2. Landfill:
While landfilling is the traditional method of disposing of plastic waste, it is not widely recommended because plastics do not degrade easily and pose a risk of pollution to the environment and groundwater. If landfill must be used, it should choose a landfill that meets environmental standards, and ensure that the landfill process will not cause secondary pollution to the surrounding environment.
Third, other processing methods
Research and development of environmentally friendly degradable materials: Encourage and support the research and development and application of environmentally friendly degradable materials to reduce the dependence on non-degradable plastics. Environmentally friendly degradable materials can decompose quickly in the natural environment and reduce environmental pollution.
Sum up
For the disposal of discarded BOPP color synthetic paper, priority should be given to recycling and reuse in order to save resources and protect the environment. Through physical recycling and chemical recycling methods, waste plastics are converted into valuable recycled materials or chemical raw materials. At the same time, it is also necessary to pay attention to the environmental protection and feasibility of harmless treatment methods to ensure that waste plastics are properly disposed of and reduce potential risks. In addition, the research and development and application of environmentally friendly degradable materials should be actively promoted to fundamentally solve the problem of plastic pollution.