Abstract:
Since the 1950s, the use of plastics has dramatically increased in industry and domestic life, and has become an indispensable part for human life. Meanwhile, it has created serious pollution of plastics and micro-plastics. In order to strengthen complete plastic pollution control, this study proposed five stages of life cycle management, namely, raw material-production-sale-disposal-recycling. The analysis of the present status and problems in the plastic pollution management indicated that although the countermeasures, including legislation and special actions were carried out at each stage, many problems still exist in the present management system, such as incomplete coverage of the life cycle management in the plastic pollution control, absence of detailed implementation rules in the legislation, enforcement difficulty of some management policies. Based on the above analysis and referencing foreign experiences in the management of plastic life cycle, this study puts forward policy suggestions to strengthen the life cycle management of the plastic pollution in China: (1) In the plastic raw material management, the industrial standards for potential leakage of micro-plastics and wastewater discharge in the production should be improved; and the materials that are easy to cause leakage such as chemical fibers should be encouraged not to be used in the cloth production. (2) In the production design, management regulations on plastic processes and recycling should be further implemented and the specific indices of micro-plastic recycling and recycling target should be brought forth. In the meanwhile, the impact of biodegradable plastics on the environment should be further studied and its degradability should be further improved. (3) In the sales and uses, in addition to strict implementation of regulations on plastic productions, it is suggested that plastic productions that are widely used in daily life should be banned gradually and green substitutions are highly encouraged to avoid "one size fits all" management mode. (4) In the disposal of plastic wastes, relative management ordinances should be strictly implemented, and international cooperation should be strengthened for the marine plastic problems. (5) In the recycling of plastic wastes, the recycling and processing techniques should be improved to reduce negative environment effects, while maximizing the recycling of the secondary resources.