The environment impacts of former, current and alternative future municipal solid waste management system in Shenzhen

Abstract

This study aims to investigate the measures implemented in Shenzhen's MSW management systems across different time periods and compare the environmental impacts arising from these systems under various scenarios. This study adopts the LCA methodology and models Shenzhen's past, present, and future MSW management systems by utilizing GaBi software. The findings of the study highlight substantial disparities in the environmental impacts resulting from different waste treatment methods employed within MSW management systems. Incineration continues to hold a pivotal role in Shenzhen's MSW system. Furthermore, recycling of recyclable materials holds the potential to conserve significant quantities of raw materials and reduce emissions produced throughout the production chain, particularly given China's prevailing energy structure, where coal remains a significant source of electricity. Overall, the net values of impact categories exhibit a declining trend in each scenario.