城市多源固废协同处置机制及园区化规划研究

Study of urban multi-source solid waste collaborative disposal mechanism and park planning method

针对生活垃圾、餐厨垃圾、危险废物等城市固废理化特性和处置设施的物质代谢特征,提出了3项园区化协同处置机制,梳理了焚烧、填埋、厌氧等8种处置技术的协同共生点,开发了包括固废产排预测、流动模拟和需求分析、技术选择和规模匹配、园区处置效果定量评估的系统规划方法.在成都长安静脉产业园采用园区化协同处置的规划实证分析表明,2025年固废处置量比规划前增加61.3%,全年发电量13.61亿kW⋅h,CO_(2)年减排量63.98万t,固废减量化率达67.8%,飞灰、炉渣100%安全处置,废水回用率达80.3%,园区总关联度达0.33,成为集固废协同处置、能源供应、建材生产于一体的新型资源循环利用基地.

Based on the physical and chemical characteristics of municipal solid waste,such as household waste,kitchen waste and hazardous waste,and the metabolism characteristics of disposal facilities,this paper put forward three collaborative disposal mechanisms of waste disposal park,systematically sorted out the collaborative points of 8typical solid waste disposal technologies,such as incineration,landfilling and anaerobic digestion,etc.,and developed a four-step planning method including waste generation prediction,flow stimulation and demand analysis,technology selection and scale matching,and quantitative evaluation.Empirical analysis based on Chang’an Vein Industrial Park in Chengdu showed,by considering collaborative mechanism and adopting this planning method,the park annual solid waste disposal volume would increase 61.3%than base year,annual power generation would be 1.361billion degrees,annual CO_(2)emission would reduce 639,800tons,waste reduction rate would reach 67.8%,the fly ash and slag would be completely safely treated,and the waste water recycling rate would reach 80.3%.The correlation degree of this park could reach 0.33,which would form a new resource recycling base,integrating collaborative disposal of solid waste,supply of energy and production of building materials.