郭士民 1宋凯鸿 2刘琉 3张晓然 4张紫阳 4李海燕4
作者信息
- 1. 住房城乡建设部建筑垃圾资源化工程技术创新中心北京建筑大学,北京 100044||上海建筑设计研究院有限公司,上海 200040
- 2. 住房城乡建设部建筑垃圾资源化工程技术创新中心北京建筑大学,北京 100044||上海市城市建设设计研究总院(集团)有限公司,上海 200120
- 3. 上海建筑设计研究院有限公司,上海 200040
- 4. 住房城乡建设部建筑垃圾资源化工程技术创新中心北京建筑大学,北京 100044
- 折叠
摘要
Abstract
To investigate the efficiency of construction waste in controlling runoff pollution in rainwater infiltration facilities and the synergistic mechanism of microorganisms,an artificially simulated rainwater infiltration system is constructed.It comparatively analyzed the differences in pollutant release and removal efficiency between systems with and without construction waste,and revealed the role of microorganisms in the system using 16S rRNA gene sequencing technology.The results showed that,in terms of pollutant release,the release amounts of COD,NH4+-N,Zn2+,and Pb2+in the system with construction waste were significantly lower than those in the system without construction waste,while the release amounts of TN and Cr6+were relatively higher.Regarding pollutant removal efficiency,all systems exhibited good removal effects on NH4+-N and TP,but TN remained in the release process.Each system showed satisfactory removal effects on Cu2+,Zn2+,Cd2+,and Pb2+;however,the system with sand had a large amount of Mn2+release.During long-term operation,the effluent pH of all systems met the relevant quality standards.Among them,construction waste bricks showed outstanding removal effects on NH4+-N,COD,TP,Cu2+,Zn2+,Cd2+,Mn2+,and Pb2+,all maintaining above 65％.Moreover,their removal efficiency for TN gradually improved with the extension of operation time,but the removal effect on Cr6+was relatively poor.The 16S rRNA gene sequencing results indicated that,compared with the"soil+sand+gravel"structure,the"soil+fine brick+coarse brick"structure contained more denitrifying and phosphorus-removing bacterial genera in different layers.This suggests that microorganisms play a more significant role in nitrogen and phosphorus removal in systems containing construction waste bricks.关键词
建筑废砖/渗滤设施/径流/常规污染物/重金属/微生物Key words
construction waste brick/percolation facility/runoff/Conventional pollutants/heavy metal/microorganism分类
建筑与水利
