水资源与水工程学报2025，Vol.36Issue(3)：45-54,10.DOI:10.11705/j.issn.1672-643X.2025.03.06
曝气强化生物炭对人工湿地处理污水厂尾水效果的影响
Aeration enhanced biochar improves treatment of effluent from sewage plants in constructed wetlands
摘要
Abstract
As a natural water treatment system,constructed wetlands play an important role in the treat-ment of effluent from sewage plants,but their purification efficiency is often limited by carbon source a-vailability and dissolved oxygen(DO)levels.To investigate the impact of different adsorption materials on wetland performance,two types of biochar-based constructed wetlands(fruit-shell biochar and coco-nut-shell biochar)were established,with a gravel-based system serving as the control.The performance of the wetlands were evaluated by the three-dimensional excitation-emission-matrix spectra(3D-EEM)and redundancy analysis(RDA).The results showed that after aeration enhancement the total nitrogen(TN)removal efficiencies of the gravel,coconut-shell biochar,and fruit-shell biochar systems reached 65.7%,89.3%,and 93.5%,demonstrating an increase of 15.2%,16.8%,and 9.6%,respective-ly.The fruit-shell biochar system exhibited a significant increase in humic acid-like substances and the most active microbial growth.Proteobacteria emerged as the dominant phylum in nitrification and denitri-fication processes,with a relative abundance of 26.46%-48.18%.Additionally,key functional genera such as Nitrospira(0.83%-2.27%),Ellin6067(3.72%-6.18%),and Comamonadaceae(1.32%-3.13%)showed notably higher abundances in the biochar-enhanced wetlands,playing cruci-al roles in nitrogen/phosphorus removal and organic matter degradation.Besides,in the fruit-shell bio-char system,TN removal efficiency demonstrated a strong positive correlation with nitrifying and denitrif-ying bacteria,particularly Nitrospira and Ellin6067.关键词
生物炭/人工湿地/曝气/冗余分析/微生物测序/污水厂尾水Key words
biochar/constructed wetland/aeration/redundancy analysis(RDA)/microbial sequen-cing/effluent from sewage plant引用本文复制引用
李川,徐元,黄圣琳,杨晶涵,侯文静,陈浩强,许明..曝气强化生物炭对人工湿地处理污水厂尾水效果的影响[J].水资源与水工程学报,2025,36(3):45-54,10.基金项目
大型人工湿地水质稳定达标和深度净化工艺研究项目(SHJKJ-2022-007) （SHJKJ-2022-007）
