电流强度对3D-BER去除硝酸氮性能的影响

Effect of current intensity on the removal of nitrate nitrogen of 3D-BER

电化学作为一种水处理技术已逐渐得到广泛应用,但单一的电化学技术具有能耗高,电流效率低的缺点,将电化学和生物膜进行联合是近年来开发的一种新型水处理技术。采用新型3D-BER对模拟硝酸氮地下水进行了去除研究。研究结果显示,电流强度为40 m A时,3D-BER硝酸氮去除效率最高达到90.15%,出水亚硝酸氮受电流强度影响较小,而3D-BER中氨氮的积累量在40 mg/L时最高。

Electrochemistry as a water treatment has been widely used,but a single electrochemical technology with high energy consumption and low current efficiency.Combine electrochemistry and biological membrane is a novel water treatment developed in recent years.In this paper,improve the common Three-Dimensional Bio-Electrochemical Reactor,and use the novel reactor to research on nitrate removal from groundwater.The results showed that the best nitrate removal rate of reactor can reach when current intensity was 40 m A,it was 90.15%.Effluent nitrite nitrogen was less effected by current intensity and ammonia nitrogen concentration was highest when current intensity was 40 mg/L.