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Title: Treatment of azo dye Acid Orange 7 containing wastewater using up-flow constructed wetland with and without supplementary aeration
Authors: Soon-An, Ong
Uchiyama, Katsuhiro
Inadama, Daisuke
Ishida, Yuji
Yamagiwa, Kazuaki
Keywords: Up-flow constructed wetland;Supplementary aeration;Nutrients;Acid Orange 7;Phytoremediation
Issue Date: Dec-2010
Publisher: Elsevier Ltd.
Citation: Bioresource Technology, vol. 101(23), December 2010, pages 9049-9057
Abstract: The aim of this study is to examine and compare the treatment performance of Acid Orange 7 (AO7) containing wastewater by up-flow constructed wetland (UFCW) at different AO7 concentrations, hydraulic retention times (HRT) and alternative of supplementary aeration. The aerated wetland reactor outperformed the non-aerated one in the removal of organic matters, NH4-N and aromatic amines. The T-P removal efficiency for both wetland reactors was not much different throughout the study and the supplementary aeration showed no significant effect on T-P removal. As influent AO7 concentration increased from 50 to 100mg/L, the performance in biodegradation of organic matters and nitrification in the non-aerated wetland reactor, and denitrification and decolorization in the aerated wetland reactor were affected. As HRT increased from 3 to 6d, the removal of NH4-N and NO3-N in the aerated wetland reactor was not significantly different, but the NH4-N removal efficiency improved tremendously in the non-aerated wetland reactor.
Description: Link to publisher’s homepage at http://www.elsevier.com/
URI: http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6V24-50HYG3W-4-F&_cdi=5692&_user=1659113&_pii=S0960852410012241&_origin=search&_coverDate=12%2F31%2F2010&_sk=998989976&view=c&wchp=dGLzVlb-zSkzS&md5=88432364e8f081ecadf4e1d954c39248&ie=/sdarticle.pdf
ISSN: 0960-8524
Appears in Collections:Ong Soon An, Dr.
School of Environmental Engineering (Articles)

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