农业环境科学学报2024，Vol.43Issue(6)：1294-1302,9.DOI:10.11654/jaes.2023-1035
废旧地膜回收利用模式探索、现实困境与优化路径
Methods,challenges,and improvement path for recycling of waste mulch film:survey of Gansu Province and Shandong Province,China
摘要
Abstract
The aim of this study was to investigate waste mulch film recycling in China,with a focus on the innovative initiatives of Gansu Province and Shandong Province.Through this survey,the experience and challenges of these initiatives were documented and the economic and ecological benefits of various recycling methods were compared.In Shandong Province,the total volume of plastic film was reduced through innovative peanut planting systems,and mulch film trash was greatly reduced via an administrative hierarchy recovery network and a"straw+film"synergistic recovery mode.In Gansu Province,mulch film recycling was achieved in rural areas through a full-chain,multi-agent synergistic recycling model and an integrated"multi-function"recovery and treatment model of enterprises.The economic benefit per ton of waste mulch film(a mixture of waste plastic film,straw,roots,soil,etc.)was recorded.After separation and cleaning,the impurity rate after separation and cleaning was found to be approximately 20% to 30% and the economic value of granulitization was 20-120 yuan·t-1,with a CO2 equivalent of 8.68 kg CO2e·t-1.In comparison,the value gained from power generation by incineration was 129-194 yuan·t-1,with a CO2 equivalent of 1.83 kg CO2e·t-1.Challenges to enhancing recycling efficiency include improper mulch film use,high trash content in recovery,low mechanical recovery rates,unscientific resource allocation,limited sustained financial support,and a weak cash flow-generating capacity in the mulch film recycling industry.The primary paths for mulch film recovery in China are substitution-based source reduction and recycling system construction.The main recycling methods are power generation by incineration and granulitization,with incineration offering greater economic and carbon reduction benefits over granulitization.Addressing current challenges involves developing local-specific technical regulations for mulching,strengthening standardized control of mulch film production and sales,innovating machinery and equipment,coordinating regional resource allocation,mobilizing long-term financial and social capital resources,and developing market mechanisms for transforming the value of ecological products.关键词
地膜/回收利用/模式/困境/优化Key words
plastic film/recycling/model/dilemma/improvement分类
管理科学引用本文复制引用
张倩,陈倩,江艳军,胡乃娟,樊廷录,孙洪武..废旧地膜回收利用模式探索、现实困境与优化路径[J].农业环境科学学报,2024,43(6):1294-1302,9.基金项目
江苏省重点研发计划项目(BE2023351) （BE2023351）
江苏省农业科技自主创新项目(CX(21)1010) （CX(21）
国家自然科学基金项目(32201923) Key Research and Development Program of Jiangsu Province(BE2023351) （32201923）
Independent Innovation Program of Agricultural Science and Technology in Jiangsu Province(CX(21)1010) （CX(21）
National Natural Science Foundation of China(32201923) （32201923）
