Application of aeration technology to nitrogen removal in constructed wetlands

doi:10.11894/1005-829x.2014.34(8).001

Abstract

Abstract:

Dissolved oxygen has a great effect on nitrogen removal in constructed wetland treatment system. Due to forecast the structural constraints of constructed wetlands,the level of dissolved oxygen is generally low. The aeration techniques can obviously improve the level of dissolved oxygen in constructed wetlands and increase the nitrogen removal effect. The effect of dissolved oxygen on nitrogen removal in constructed wetlands and its main source are described. The factors which have effects on the dissolved oxygen level of constructed wetlands are discussed and the ways of improving the level of dissolved oxygen in constructed wetlands are discussed emphatically. In addition,the relevant research direction in future is forecast.

Key words: constructed wetland, dissolved oxygen, nitrogen removal, aeration technology

摘要：

在人工湿地污水处理系统中，溶解氧对脱氮效果起着非常重要的作用。由于人工湿地自身构造的限制，湿地内溶解氧水平普遍较低，利用增氧技术可明显改善人工湿地内部的溶解氧水平，提高湿地硝化脱氮作用。对溶解氧在人工湿地脱氮中的作用及其主要来源进行了描述，探讨了影响人工湿地溶解氧水平的因素，重点论述了提高人工湿地溶解氧水平的途径，并对今后的相关研究方向进行了展望。

关键词: 人工湿地, 溶解氧, 脱氮, 增氧技术

CLC Number:

X703

Wang Wei, Ding Yi, Wang Yuhui, Song Xinshan. Application of aeration technology to nitrogen removal in constructed wetlands[J]. INDUSTRIAL WATER TREATMENT, 2014, 34(8): 1-5.

王玮, 丁怡, 王宇晖, 宋新山. 人工湿地增氧技术在污水脱氮中的应用[J]. 工业水处理, 2014, 34(8): 1-5.

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