| 论文标题： |
How Temperature Affects Wastewater Nitrate Removal in a Bioelectrochemically Assisted Constructed Wetland System |
| 作者： |
Xu, Dan; Xiao, Enrong; Xu, Peng; Zhou, Yin; Zhou, Qiaohong; Xu, Dong; Wu, Zhenbin |
| 出版刊物： |
POLISH JOURNAL OF ENVIRONMENTAL STUDIES |
| 出版日期： |
|
| 出版年份： |
2018 |
| 卷/期： |
2 |
| DOI： |
10.15244/pjoes/75958 |
| 论文摘要： |
A novel bioelectrochemically assisted constructed wetland system (BECW) was investigated using a laboratory-scale experimental apparatus for treating nitrate-contaminated water without an organic carbon source. The BECW was operated at 29 +/- 1 and 18 +/- 1 degrees C, respectively, to explore the effects of temperature on the autotrophic denitrification process. The results showed that higher TN removal efficiency (76.30 +/- 5.08%) was obtained at higher temperature when compared to a lower temperature (48.18 +/- 4.40%). The effluent concentrations of NO2--N and NH4+-N at 18 +/- 1 degrees C were 0.40 +/- 0.11 and 0.50 +/- 0.42 mg N whereas those at 29 +/- 1 degrees C could be neglected. Besides, significant accumulations of NO2--N and NH4+-N were observed in the cathode region at 18 +/- 1 degrees C through quantifying different forms of nitrogen that varied along the flow path. |
