电流强度对3D-BER去除硝酸氮性能的影响
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摘要
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.
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.
引文
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[2]Sakakibara Y.Denitrification and neutralization with an electrochemical and biological reactor[J].Wat.sci.tech,1994,30(6):151-155.
[3]Dong Y L,Adela R,Lee M,et al.Appl Environ Microbiol[J].2002,68(5):2140-2147.
[4]国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].第4版.北京:中国环境科学出版社,2002.
[5]葛艳菊.电极—生物膜反应器去除厌氧氨氧化出水中硝酸氮的性能研究[D].北京:北京市环境保护科学研究院,2007.
[6]周欲飞.电极生物膜组合工艺去除地下水硝酸氮的试验研究[D].杭州:浙江大学,2010.
[7]唐金晶,郭劲松,方芳,等.三维电极生物膜脱氮系统的电场响应性[J].重庆大学学报,2013(5):138-142,150.
[8]周贵忠,孙静,张旭,等.地下水生物反硝化碳源材料研究[J].环境科学与技术,2008,31(37):4-10.
[9]赵国智.电极生物膜反硝化去除地下水中硝酸氮的实验研究[D].杭州:浙江大学,2011.
[10]S.Ghafari,M.Hasan,M.K.Aroua.Nitrate remediation in a novel upflow bioelectrochemical reactor(UBER)using palm shell activated carbon as cathode material,Electrochim.Acta,2009(54):4164-4171.