电流强度对电化学产氢自养反硝化脱氮效率的影响  

EFFECT OF CURRENT INTENSITY ON THE NITROGEN REMOVING BY ELECTROCHEMICAL HYDROGEN AUTOTROPHIC DENITRIFICATION PROCESS

作　　者：周欲飞[1] 赵国智[1] 田光明[1] 李文红[1] 

机构地区：[1]浙江大学环境与资源学院,浙江杭州310029

出　　处：《水处理技术》2010年第9期38-41,共4页Technology of Water Treatment

基　　金：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"(2009ZX07317-008-06)

摘　　要：研究了温度为30℃、pH为7.5、进水NO3--N质量浓度30 mg·L-1、HRT为10 h的条件下,不同电流强度(0～160 mA)对电化学产氢纯自养反硝化的影响。结果表明,当电流在0～100 mA时,电流强度与NO3--N去除率呈极线性正相关;出水NO2--N质量浓度随着电流强度增加先从0增大到6.86 mg·L-1后又减少为1.80 mg·L-1;但是,电流强度过大会抑制生物反硝化效率,同时会导致碳棒溶解,影响出水水质。The current intensity effect on electrochemical hydrogen autotrophic denitrification was investigated,when the temperature was 30 ℃,the pH was7.5,the nitrate concentration of the influent was 30 mg·L-1,the HRT was 10 h.The results showed that,when the current intensity between 0 mA and 100 mA,there was a positive linear correlation between the current intensity and NO3--N removal efficiency.With the current increase,the nitrite concentration of the effluent first increased and then decreased.But high current intensity could inhibite denitrification efficiency.

关 键 词：电流 电化学产氢自养 反硝化 

分 类 号：X703.1[环境科学与工程—环境工程]