College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China.
College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China.
Bioresour Technol. 2017 Mar;227:7-14. doi: 10.1016/j.biortech.2016.12.046. Epub 2016 Dec 16.
The constructed wetland coupled with biofilm-electrode reactor (CW-BER) is a novel technology to treat wastewater with a relatively high level of total inorganic nitrogen (TIN) concentration. The main objective of this study is to investigate the effects of C/Ns, TIN concentrations, current intensities, and pH on the removal of nitrogen in CW-BER; a control system (CW) was also constructed and operated with similar influent conditions. Results indicated that the current, inorganic carbon source and hydrogen generated by the micro-electric field could significantly improve the inorganic nitrogen removal with in CW-BER, and the enhancement of average removal rate on NH-N, NO-N, and TIN was approximately maintained at 5-28%, 5-26%, and 3-24%, respectively. The appropriate operation conditions were I=10mA and pH=7.5 in CW-BER. In addition, high-throughput sequencing analysis implied that the CW-BER reactor has been improved with the relative abundance of autotrophic denitrifying bacteria (Thiobacillus sp.).
人工湿地与生物膜-电极反应器（CW-BER）相结合是一种处理总无机氮（TIN）浓度相对较高的废水的新技术。本研究的主要目的是研究 C/Ns、TIN 浓度、电流强度和 pH 值对 CW-BER 中氮去除的影响；还构建并运行了一个具有相似进水条件的控制系统（CW）。结果表明，微电场产生的电流、无机碳源和氢气可显著提高 CW-BER 中的无机氮去除效果，NH-N、NO-N 和 TIN 的平均去除率分别提高了约 5-28%、5-26%和 3-24%。CW-BER 的适宜操作条件为 I=10mA 和 pH=7.5。此外，高通量测序分析表明，CW-BER 反应器的自养反硝化菌（硫杆菌属）相对丰度有所提高。
