电极-生物膜法去除地下水中硝酸盐氮  

DENITRIFICATION OF UNDERGROUND WATER BY ELECTRODE-BIOMEMBRANE METHOD

作　　者：吴未红[1] 袁兴中[1] 曾光明[1] 李文卫[1] 

机构地区：[1]湖南大学环境科学与工程系,湖南长沙410082

出　　处：《水处理技术》2005年第5期55-57,共3页Technology of Water Treatment

基　　金：国家863高技术资助项目(2001A A644020);国家自然科学基金(70171055;50179011)

摘　　要：本文研究了用电极-生物膜反应器处理地下水中硝酸盐氮的方法,得到了该方法的最佳工艺条件,即C/N比为3,温度为35℃,电流100mA,HRT8h。考察了该方法在不同进水负荷下的处理能力,结果表明:当在进水硝酸氮负荷≤30mg/L时,在HRT8h内均可取得93%以上的总氮去除率,而且随着负荷的升高,总氮去除速率升高。同时,经实验得到应用时的最经济碳氮比(C/N=1.07)。最后,地下水应用实验说明:该方法可以高效、彻底、清洁、经济地去除地下水中的硝酸盐氮。The method for removal of nitrate in the underground water by electrode-biomembrane reactor was studied and the optimal technological conditions were achieved, i.e., C/N, 3; temperature, 35℃; current, 100mA; HRT, 8h. The treating ability at loading in different influent water was investigated. It was showed that when loading of nitrate in influent water was less than 30mg/L, total nitrate removal rate at HRT=8h reached to over 93%;with rising of loading, total nitrate removal rose. Meanwhile, through experiment, the most economic C/N was 1.07. It was also showed through experiment that the method could remove nitrate in the underground water effectively and economically.

关 键 词：硝酸盐氮 地下水 生物膜法 电极 生物膜反应器 最佳工艺条件 C/N比 处理能力 去除速率 应用实验 水负荷 氮负荷 去除率 碳氮比 总氮 经济 

分 类 号：X832.02[环境科学与工程—环境工程] P641.2[天文地球—地质矿产勘探]