Optimization of organics and nitrogen removal in intermittently aerated vertical flow constructed wetlands: Effects of aeration time and aeration rate
Optimization of organics and nitrogen removal in intermittently aerated vertical flow constructed wetlands: Effects of aeration time and aeration rate
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间歇曝气垂直流人工湿地有机物和氮去除的优化：曝气时间和曝气速率的影响
DOI：
10.1016/j.ibiod.2016.04.031
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Lv Jialong
中科院分区：
文献类型：
--
作者：
Wu Haiming;Fan Jinlin;Zhang Jian;Ngo Huu Hao;Guo Wenshan;Hu Zhen;Lv Jialong
为优化间歇曝气垂直流人工湿地（VF CWs）处理生活污水中有机物和氮的去除效果，对VF CWs进行了不同曝气时间的运行试验（1 h d−1、2 h d−1、4 h d−1、6 h d−1、8 h d− 1和10 h d−1）和通气率（0.1 L min−1、0.2 L min−1、0.5 L min−1、1.0 L min− 1和2.0 L min−1）考察人工曝气对有机物和氮去除效率的影响。结果表明，最佳曝气时间和曝气量分别为4 h d-1和1.0 L min-1，可在CWs中形成适宜的好氧缺氧区，同时对COD、NH 4 +-N和TN的去除率分别达到97.2%、98.4%和90.6%。结果表明，优化的间歇曝气是可靠的选择，以提高有机物和氮的处理性能，以较低的运行成本。
In this study, to optimize aeration for the enhancement of organics and nitrogen removal in intermittently aerated vertical flow constructed wetlands (VF CWs) for treating domestic wastewater, the experimental VF CWs were operated at different aeration time (1 h d−1, 2 h d−1, 4 h d−1, 6 h d−1, 8 h d−1and 10 h d−1) and aeration rate (0.1 L min−1, 0.2 L min−1, 0.5 L min−1, 1.0 L min−1and 2.0 L min−1) to investigate the effect of artificial aeration on the removal efficiency of organics and nitrogen. The results showed that the optimal aeration time and aeration rate were 4 h d−1and 1.0 L min−1, which could create the appropriate aerobic and anoxic regions in CWs with the greater removal of COD (97.2%), NH4+-N (98.4%) and TN (90.6%) achieved simultaneously during the experiment. The results demonstrate that the optimized intermittent aeration is reliable option to enhance the treatment performance of organics and nitrogen at a lower operating cost.