State Key Lab of Urban Water Resources and Environment, Harbin Institute of Technology, Harbin, 150090, China; School of Civil Engineering, Wuhan University, Wuhan, 430072, China.
School of Civil Engineering, Wuhan University, Wuhan, 430072, China.
Chemosphere. 2018 Feb;193:337-342. doi: 10.1016/j.chemosphere.2017.11.017. Epub 2017 Nov 5.
Combined bioelectrochemical and sulfur autotrophic denitrification (CBSAD) system had proven to be feasible for nitrate removal at low temperature. This system obtained excellent denitrification efficiency 96.55% at 10 ± 2 °C long term operation. Nitrate removal efficiency presented increased tendency with applied current increased from 50 to 200 mA and then decreased when the applied current was further increased to 300 mA. The CBSAD system owned the most abundant and rich communities at current 200 mA, and the community structures of the microbial samples at different current conditions were clearly different from each other. Phyla Firmicutes, Proteobacteria and classes Epsilonproteobacteria, Gammaproteobacteria, Betaproteobacteria, Clostridia dominated in all the communities in the system. The largest genus at current 50 mA was Arcobacter, whereas Pseudomonas was the most dominant genus at current 100-300 mA condition, suggesting that high current changed the bacterial structure in this CBSAD reactor.
联合生物电化学和硫自养反硝化（CBSAD）系统已被证明可在低温下去除硝酸盐。该系统在 10±2°C 的长期运行中获得了优异的 96.55%的反硝化效率。硝酸盐去除效率随着电流从 50mA 增加到 200mA 而呈现出增加的趋势，当电流进一步增加到 300mA 时，去除效率则下降。在 200mA 的电流下，CBSAD 系统拥有最丰富和丰富的群落，而在不同电流条件下的微生物样品的群落结构明显不同。在所有系统群落中，厚壁菌门、变形菌门和 Epsilonproteobacteria、Gammaproteobacteria、Betaproteobacteria、梭菌纲占主导地位。在 50mA 的电流下，最大的属是弧菌属，而在 100-300mA 的电流条件下，假单胞菌是最主要的属，这表明高电流改变了 CBSAD 反应器中的细菌结构。
