关键词: 装修垃圾, 规划运营, 环保, 经济性, 处理对象与规模, 工程选址, 资源化目标

Abstract: Based on five typical construction and demolition waste recycling projects built and operated in Shanghai since 2018, combining with the operational practice, and from environmental protection, economic efficiency, and resource utilization perspectives, the elements of the overall planning and operation process of the construction waste resource utilization project were analyzed. The project focusing on renovation waste and considering demolition waste. The impact of the choice of processing objects and scale on the project’s environmental protection and economic efficiency, the impact of waste collection and transportation modes and the economic efficiency of recycled product applications on project site selection, and the key goals and production line setup points for project construction and operation were explored. Results showed that the planning and operation project of construction waste recycling facility should mainly focus on decoration waste, while also taking into account demolition waste. For the collection and transport of renovation waste within a 50 km service radius, a direct transport mode should be adopted, without intermediate transfer or sorting stations. Recycled aggregate typically accounted for 75% to 85%, and was primarily used as raw material for producing building materials like bricks and mortar. The longer the transportation distance for recycled aggregate, the higher the transportation cost would be and the lower the revenue from it. The proportion of sorted residues that need to be incinerated or landfilled was 10% to 25%. The number of vehicles required to be configured was a key determinant of transportation costs, which was determined by the transportation distance of the residues. Therefore, project site selection should be as close as possible to recycled aggregate application sites and residual waste disposal plants, and material utilization production facilities such as brick making and mortar should be set up within the plant if conditions permit. The key operational goals should include high quality of recycled aggregate, a high resource recovery rate and a low residue rate (under the resource utilization rates of 90% and 75%, the difference in combined product revenue and residue disposal cost results was 33.75 yuan/t in the net cost per ton of waste), effective control of dust and noise. During operation, economic calculations for renovation waste and demolition waste should be separately calculated and settled according to categories.

Key words: decoration waste, planning and operation, environmental protection, economy, processing object and scale, project site selection, resource utilization goal