Effects of aeration position on organics, nitrogen and phosphorus removal in combined oxidation pond-constructed wetland systems

被引：62

作者：

Wang, Xiaoou ^{[1
]}

Tian, Yimei ^{[1
]}

Zhao, Xinhua ^{[1
]}

Peng, Sen ^{[1
]}

Wu, Qing ^{[1
]}

Yan, Lijian ^{[1
]}

机构：

[1] Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2015年 / 198卷

基金：

中国国家自然科学基金;

关键词：

Constructed wetland; Oxidation pond; Aeration position; Artificial aeration; WASTE-WATER TREATMENT; ARTIFICIAL AERATION; POLLUTION-CONTROL; OXYGEN; PERFORMANCE; RHIZOSPHERE; CLIMATE; PLANTS; ROOTS; REUSE;

D O I：

10.1016/j.biortech.2015.08.150

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Given that few studies investigated the effects of aeration position (AP) on the performance of aerated constructed wetlands, the aim of this study was to evaluate the effects of AP on organics, nitrogen and phosphorus removal in lab-scale combined oxidation pond-constructed wetland (OP-CW) systems. Results showed that middle aeration allowed the CW to possess more uniform oxygen distribution and to achieve greater removals of COD and NH3-N, while the CW under bottom aeration and surface aeration demonstrated more distinct stratification of oxygen distribution and surface aeration brought about better TN removal capacity for the OP-CW system. However, no significant influence of artificial aeration or AP on TP removal was observed. Overall, AP could significantly affect the spatial distribution of dissolved oxygen by influencing the oxygen diffusion paths in aerated CWs, thereby influencing the removal of pollutants, especially organics and nitrogen, which offers a reference for the design of aerated CWs. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：7 / 15

页数：9

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