Designing Constructed Wetlands for Nitrogen Removal
Designing Constructed Wetlands for Nitrogen Removal
复制标题
设计人工湿地以去除氮
DOI：
10.2166/wst.1994.0148
复制
发表时间：
1994
影响因子：
2.7
通讯作者：
R. L. Knight
中科院分区：
文献类型：
--
作者：
D. A. Hammer;R. L. Knight
许多人工湿地能充分处理BOD 5、TSS和细菌.然而，从北美数据库中的52个人工湿地和自然湿地的氮（N）数据的审查证实，氮的去除是可变的。硝化和反硝化需要好氧和厌氧条件。本文介绍了使用交替浅水区和深水区来创建两种环境的系统的案例历史。通过对18个浅水-深水系统的氮去除率与氮负荷的回归分析表明，NH 4 +负荷（kgN/ha/d）可以用来预测出水NH 4 +值。浅水-挺水植被和深水-沉水植被与低NH 4 +（和TKN）负荷率的组合可以产生非常低的NH 4 +排放水平。
Many constructed wetlands adequately treat BOD 5 , TSS, and bacteria. However, a review of nitrogen (N) data from 52 constructed and natural wetlands in the North American data base confirmed that N removal was variable. Nitrification and denitrification require aerobic and anaerobic conditions. This paper presents case histories of systems that use alternating shallow and deep water zones to create both environments. Regression analysis of N removal and N loadings in 18 shallow-deep water systems suggested that NH 4 + loading (kg N/ha/day) could be used to predict effluent NH 4 + values. Combinations of shallow water-emergent vegetation and deep water-submergent vegetation with low NH 4 + (and TKN) loading rates can produce very low levels of discharged NH 4 + .