Graduate School of Science and Technology, Niigata University, 8050, Ikarashi 2, Nishi-ku, Niigata 950-2181, Japan.
Bioresour Technol. 2010 Dec;101(23):9049-57. doi: 10.1016/j.biortech.2010.07.034. Epub 2010 Jul 14.
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, NH(4)-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 100 mg/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 6 d, the removal of NH(4)-N and NO(3)-N in the aerated wetland reactor was not significantly different, but the NH(4)-N removal efficiency improved tremendously in the non-aerated wetland reactor.
本研究旨在考察和比较上流式人工湿地（UFCW）在不同 AO7 浓度、水力停留时间（HRT）和补充曝气替代条件下处理含酸性橙 7（AO7）废水的效果。曝气湿地反应器在去除有机物、NH（4）-N 和芳香胺方面优于非曝气湿地反应器。在整个研究过程中，两种湿地反应器的 T-P 去除效率没有太大差异，补充曝气对 T-P 去除没有显著影响。随着进水 AO7 浓度从 50mg/L 增加到 100mg/L，非曝气湿地反应器中有机物的生物降解和硝化性能，以及曝气湿地反应器中的反硝化和脱色性能受到影响。随着 HRT 从 3d 增加到 6d，曝气湿地反应器中 NH（4）-N 和 NO（3）-N 的去除没有显著差异，但非曝气湿地反应器中 NH（4）-N 的去除效率有了显著提高。
