| Issue |
E3S Web Conf.
Volume 267, 2021
7th International Conference on Energy Science and Chemical Engineering (ICESCE 2021)
|
|
|---|---|---|
| Article Number | 02021 | |
| Number of page(s) | 4 | |
| Section | Environmental Chemistry Research and Chemical Preparation Process | |
| DOI | https://doi.org/10.1051/e3sconf/202126702021 | |
| Published online | 04 June 2021 | |
Effect of current on biofilm-electrode reactor coupled with sulfur autotrophic denitrification process (BER-SAD) for nitrate removal from wastewater
1 College of Chemistry and Life Sciences, Chifeng University, Chifeng, Inner Mongolia, 024000, China
2 Chifeng University, Chifeng, Inner Mongolia, 024000, China
* Corresponding author’s e-mail: liuhy729@cugb.edu.cn
The biofilm-electrode reactor coupled with sulfur autotrophic denitrification process (BER-SAD) was used to remove nitrate in groundwater, and the effect of current intensity on the denitrification characteristics of the coupled process was explored. Current intensity had a great influence on the denitrification effect of the coupled process, the maximum nitrate removal efficiency of 99.9% and lowest nitrite production were gained under the optimum current density of 100 mA. Moreover, the accumulation concentration of SO42- increased gradually with the increase of current intensity. With the increase of current intensity, the proportion of hydrogen autotrophic denitrification decreased, while the proportion of sulfur autotrophic denitrification increased.
© The Authors, published by EDP Sciences, 2021
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