%0 Journal Article
%T Study on Denitrification Characteristics of Dynamic Membrane Based on Nitrate Liquid-Membrane Microelectrodes<br>基于硝酸盐液膜微电极的动态膜反硝化特性研究
%A ZHOU Xiao-hong
%A SHI Han-chang
%A CAI Qiang
%A <br>周小红
%A 施汉昌
%A 蔡强
%J 环境科学
%D 2006
%I 
%X Nitrate microelectrodes and ORP microelectrodes were fabricated to study the denitrification characteristics of dynamic membrane at different COD loadings. The denitrification process was found at 0.6-1 mm depth beneath the interface of biofilm/bulk. The results of ORP microelectrode also demonstrated that the ORP value in the range of denitrification area was between 88.6 approximately -128.4 mV which was appropriate to denitrification. When the COD loading was 0.45 kg/(m3 x d), the denitrification rate (NO3- -N) was the maximum of 0.6347 x 10(-6 mol/(L x s). With the increase of COD loading, the denitrification area was increasing and two layers with different denitrification rates emerged in the dynamic membrane. The phenomenon implied the effect of organic concentration, oxygen concentration and bacterial competition on the denitrification rate.
%K dynamic membrane
%K denitrification
%K microelectrode
%K nitrate
%K ORP<br>动态膜
%K 反硝化
%K 微电极
%K 硝酸盐
%K ORP
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=5F633C7E45121DC8&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=9CF7A0430CBB2DFD&sid=3C27325D8381FEA0&eid=F654D651B5009E39&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=13