Comparative Study Of Electronic Waste Recycling Models Based On System Dynamic

Waste electrical and electronic recycling industry is a new industry with dual responsibilities of economic growth and environmental protection.The corresponding electronic waste recycling model is of great significance to the development of this industry.How to choose a reasonable recycling mode for each node enterprise in the closed-loop supply chain of electronic products is the key problem to guide enterprises to join the recycling work and form a high economic value industrial chain.Therefore,this paper takes e-waste as the research object and aims to achieve the coordinated development of economy and environment,main tasks as follows:Firstly,the current situation of e-waste recycling is introduced.Through combing the domestic and foreign references of e-waste recycling and closed-loop supply chain management,it is clear that it is scientific and necessary to study e-waste recycling modes by using the method of system dynamics;Secondly,based on the relevant concepts and theories such as extended producer responsibility system,closed-loop supply chain and circular economy,this paper makes a qualitative analysis of e-waste recycling mode.Based on the recycling subject,it is divided into manufacturer LED(MR),retailer LED(SR)and third-party enterprise LED(TR)And compare the advantages and disadvantages of different modes;then,according to the modeling steps of system dynamics,combined with the actual operation law of electronic product closed-loop supply chain,SD models of different modes are constructed by using Vensim software,and the effectiveness is tested and appropriate parameter values are adjusted;finally,Canon(China)Taking SD model as an example,this paper discusses the recycling mode with the highest economic benefit and the lowest environmental consumption,and puts forward countermeasures and suggestions for the development of waste electrical and electronic recycling industry.The research shows the economic benefits of SR mode are better than TR mode and TR mode is better than MR mode;The environmental consumption of SR mode is higher than that of MR mode,and MR mode is higher than that of TR mode.