Enhanced organics and nitrogen removal in batch-operated vertical flow constructed wetlands by combination of intermittent aeration and step feeding strategy.
作者： Jinlin Fan , Shuang Liang , Bo Zhang , Jian Zhang
DOI: 10.1007/S11356-012-1130-7
关键词:
摘要: Oxygen and carbon source supply are usually insufficient in subsurface flow constructed wetlands. Simultaneous removal of organic pollutants nitrogen five batch-operated vertical wetlands under different operating conditions was investigated. Alternate aerobic anaerobic regions were created well with intermittent aeration. Four-month experiments showed that the wetland-applied aeration combined step feeding strategy (reactor E) greatly improved organics, ammonium (NH4–N), total (TN) simultaneously, which 97, 96, 82 %, respectively. It much better than non-aerated reactors A B outperformed intermittently aerated reactor D without feeding. Continuous C) significantly enhanced organics nitrification, but it limited TN (29 %) seriously as a result low denitrification level, high operation cost remained question. The effect plants confirmed this study, monitoring data could grow normally. Intermittent had no obvious influence on growth wetland study.
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