Effect of COD/N ratio on nitrate removal in horizontal subsurface flow constructed wetlands

DOI

10.2991/icimm-15.2015.329How to use a DOI?

Keywords

Horizontal subsurface flow constructed wetlands (HSSF CWs); cattail fermentation broth; COD/N ratio; nitrate removal.

Abstract

In this study, four laboratory-scale horizontal subsurface flow constructed wetlands (HSSF CWs) were designed to reveal the effects of cattail fermentation broth and Typha latifolia on nitrate removal. The results showed that both the addition of cattail fermentation broth and the presence of Typha latifolia could improve the nitrate removal rate. As COD/N ratio increased from 0 to 3, the nitrate removal rate attributed to the plant increased from 0.09 to 0.29 g N m 3 d 1, but the nitrate removal proportion decreased from 27.3% to 10.7%, and denitrification was always the dominant nitrate removal mechanism.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Qi Yin
AU  - Wenrui Guo
AU  - Yue Wen
AU  - Qi Zhou
PY  - 2015/07
DA  - 2015/07
TI  - Effect of COD/N ratio on nitrate removal in horizontal subsurface flow constructed wetlands
BT  - Proceedings of the 5th International Conference on Information Engineering for Mechanics and Materials
PB  - Atlantis Press
SP  - 1758
EP  - 1762
SN  - 2352-5401
UR  - https://doi.org/10.2991/icimm-15.2015.329
DO  - 10.2991/icimm-15.2015.329
ID  - Yin2015/07
ER  -