Biological technology of denitrification and phosphorus removal has been focused on in wastewater treatment field in recent years. 生物脫氮除磷技術一直是污水處理領域所關注的重點。
Experiments of nitrogen and phosphorus removal from rural domestic wastewater in the Taihu Lake basin were carried out by the two-stage subsurface flow constructed wetland process. 採用二級串聯潛流式人工濕地系統對太湖地區農村生活污水進行了脫氮除磷的試驗研究。