Study on carbon reduction and emission reduction benefits of construction and demolition waste management based on hybrid simulation experiments
This paper aims to discuss the construction demolition waste management policy aiming at"decarbonization"and"waste-free".A hybrid simulation model based on the subjective simulation and system dynamics approach is used to construct the demolition waste generation subsystem,treatment subsystem,and evaluation subsystem to reflect the complexity of the construction demolition waste management system.The four sub-systems(namely,the generation sub-system,treatment sub-system,management sub-system,and evaluation sub-system)are constructed to reflect the complexity of the construction and demolition waste management system.By the application of Anylogic software and Java programming language,a carbon emission simulation platform for demolition waste management is constructed,and the waste emission and carbon emission of each stage under different scenarios are compared to evaluate the waste and carbon reduction effect of different management strategies.The results of the study show that in the process of building demolition waste management,the site management stage has the largest carbon and waste emissions,which should be focused on improvement;the interaction between the stakeholders can help demolition companies transform into green demolition companies,and enhance the emission reduction and carbon reduction effect of building demolition waste management;the combination of policies of source reduction,sorting,ad valorem charging,and publicity and education policies has the best effect,of which the source reduction policy plays a significant role in reducing carbon emissions.