浙江大学学报（理学版）2012，Vol.39Issue(6)：659-665,7.DOI:10.3785/j.issn.1008-9497.2012.06.012
电极生物膜法脱除地下水中硝酸盐氮的影响因素研究
Study of influential elements on nitrate removal from simulated groundwater by Biofilm Electrode Reactor
摘要
Abstract
A Biofilm Electrode Reactor was operated to remove the nitrate contamination in the simulated groundwater. The effects of temperature, influent pH, hydraulic retention time(HRT)and current on the denitrification of BER system was investigated. The results showed that the reactor could be successfully started up within about 20 days; the formation of biofilm on the surface of cathode was confirmed by scanning electron microscope; nitrate removal efficiency increased with the temperature range from 13. 6 ℃ to 34, 0 ℃ ;BER has strong buffering capacity on the shock of influent pH, and nitrate removal efficiency kept above 85% from pH 6. 25~8. 27; the optimal HRT was 9h, at which the nitrate removal efficiency was over 85% ; the nitrate removal efficiency first increased and then kept stable with the current ranged from 13 mA to 102 mA, more than 85% of nitrate can be removed under applied current (78-102 mA) , and without accumulation of nitrite. The consumption of anode will be accelerated at higher current.关键词
硝酸盐氮/电极生物膜/反硝化/地下水Key words
nitrate nitrogen/ electrode biofilm/ denitrification/ groundwater分类
资源环境引用本文复制引用
赵国智,李文红,田光明,周欲飞,杨治中..电极生物膜法脱除地下水中硝酸盐氮的影响因素研究[J].浙江大学学报（理学版）,2012,39(6):659-665,7.基金项目
国家水体污染控制与治理科技重大专项:小城镇污水处理装备化关键技术研究与示范(2008ZX07317-008). （2008ZX07317-008）
