我国建筑垃圾面临的问题与挑战

Abstract:Rapid urbanization in China has led to large-scale urban construction and renovation activities，and also caused large quantity of construction and demolition waste（CDW）. Many land resources have been consumed by CDW since dumping-oriented disposal is a primary way，which not only results in great damage to the ecological environment，but also causes a huge waste of resources. Enhancing the effective management of CDW is extremely crucial to promote the development of urbanization and large-scale urban renewal. This is also a significant challenge for urban sustainable development for future. This paper makes a systematic review on the generation，recycling，and disposal of CDW in China. The results show that over 2 billion ton CDW has been generated annually in China，which is 15 times higher than the quantity of municipal solid waste. Demolition waste accounts for 75% of the total quantity. However，both recycling rate（5% only）and technologies level（equipment）are extremely low，which is significantly lower than EU（90%）and Japan（95%）. In addition，the amount of CDW in China accounts for 75% of the total quantity in the global，which is 4.5 times higher than EU. China’s CDW generation rate（per capita，2.5 ton per year）is also higher than many countries，which is 1.8 and 5 times higher than EU and the U.S.，respectively. The results could beneficial for the reduction，recycling and environmentally sound management of C&D waste.

收起