Circular Economy (CE) has been a hot spot in green chemical industry, the entire ecosystem is facing the challenge of recycling. The main methods to regenerate useful chemicals from wastes are mechanical recycling, chemolysis, pyrolysis and biodegradation, then wastes need to be sorted to match the purity requirement of respective technologies. 

Therefore, efficient, intelligent and low-cost waste classification and sorting system is highly demanded to accelerate the development of CE.