环境工程学报2024，Vol.18Issue(4)：1151-1160,10.DOI:10.12030/j.cjee.202312032
多氧态垂直流人工湿地系统的构建及其污染物去除特性
Construction of vertical flow constructed wetland system with multi-aerobic and anerobic zones and its removal characteristics on pollutant
摘要
Abstract
Aiming at the problem that the traditional vertical flow constructed wetland has weak nitrogen removal ability due to the lack of anaerobic and anoxic environment,in this study,the structure of the traditional vertical flow constructed wetland system was reconstructed,and a vertical flow constructed wetland system with inner and outer double-layer construction and multi-aerobic and anerobic zones was built.The denitrification ability of this wetland system was strengthened by increasing its anaerobic and anoxic volume,and its original nitrification capacity did not change.At different water saturation ratio and hydraulic residence time,the pollutant removal efficiency,matrix microbial community structure and the distribution characteristics of nitrogen cycling functional genes in the matrix of wetland system the evolution were studied.The results showed that the best removal rates of NH4+-N and COD occurred when the water saturation ratio of the outer layer was 1∶2 and the hydraulic residence time was 24 h;the abundance of nitrogen cycling functional microorganisms in the outer layer of the system was higher than that in the inner layer,which could promote both nitrification and denitrification functions of the system and raise the nitrogen removal rate of the system.The results of this study can provide a reference and basis for the popularization and application of vertical flow constructed wetland system with multi-aerobic and anerobic zones.关键词
多氧态垂直流人工湿地/水饱和比/去除效率/功能菌/功能基因Key words
vertical flow constructed wetland system with multi-aerobic and anerobic zones/saturation ratio of water/removal efficiency/functional bacteria/functional gene分类
资源环境引用本文复制引用
申志强,徐嫚嫚,王欣,张琴,白少元..多氧态垂直流人工湿地系统的构建及其污染物去除特性[J].环境工程学报,2024,18(4):1151-1160,10.基金项目
广西重点研发"聚居型漓江洲岛生态环境负碳修复关键技术研究与示范"(桂科AB22080067) （桂科AB22080067）
国家自然科学基金(52260024) （52260024）
