CO<sub>2</sub> Content and the Forming Mechanism of the Burial Mound of Building Garbage in Xiong’an New Area, China

建筑固废是近年我国固废材料主要类型之一，其中CO2含量变化及其形成机理对研究建筑固废的再利用具有重要意义。本文针对雄安新区建筑固废堆，开展了CO2等相关气体测量，研究了CO2等含量及其变化特征，发现建筑固废堆自边部向中心CO2含量具有明显增加的趋势，而H2S和SO2气体则相对稳定，论文分析了CO2含量变化影响因素，特别是有机质的作用，进而探讨了其形成机理，发现建造固废的堆积是一个缓慢的排碳过程，该研究为建筑固废处理和再利用及其相关措施制定等提供了参考依据。Building garbage is one of the main solid wastes recently in China. It is significant to study the CO2 content variation and forming mechanism for the waste reutilization. This paper has measured the CO2 content and studied its variation of the building garbage mound in Xiong’an new area. It is found that the CO2 content is increasing from boundary to center in the burial mound of building construction garbage, while the contents of H2S and SO2 are relatively stable. The effect factor was analyzed especially the organism materials. The forming mechanism of CO2 is explored. It is considered that the CO2 is slowly released in the burial mound of building garbage, which serves as referring evidence for the waste processing, reutilization and related planning.