摘要
构建了一种增强型垂直潜流人工湿地模型,使用人工曝气手段增强人工湿地脱氮效果.增强型人工湿地曝气优选的曝气位置在基质顶面以下约30cm处,优选的气水比为6:1.使用以上条件运行人工湿地的结果表明,曝气点附近硝化反应明显增强.实验数据表明,相同条件下曝气运行时,总氮去除率达到68%,非曝气运行则为55%,但这种方式对COD的去除没有明显的增强作用.
This study build a lab-scale vertical subsurface-flow（VF）constructed wetlands model with aeration to enhance the nitrogen removal efficiency. The prefered efficient aerating position was located at 30 cm below the top of VF base and the prefered air-to-water ratio was 6 ： 1. Running study showed the nitration was increased in the aerated area. Total nitrogen removal rate was 68 % higher than nonaeration set with 55 %. But the COD removal rate didn＇t raise with this enhanced way.
出处
《北京工商大学学报（自然科学版）》
CAS
2009年第1期6-10,共5页
Journal of Beijing Technology and Business University:Natural Science Edition
关键词
人工湿地
曝气
溶解氧
脱氮
constructed wetlands
aeration
DO
nitrogen removal
