纳米铁-微生物体系去除水中硝酸盐的柱实验研究  

The column experimental study of nanoscale iron-microorganisms in water nitrate removal system

作　　者：赵倩倩[1] 李铁龙[1,2,3] 金朝晖[1,2] 安毅[1] 东美英[1] 

机构地区：[1]南开大学环境科学与工程学院,天津300071 [2]南开大学环境污染过程与基准教育部重点实验室,天津300071 [3]南开大学天津市城市生态环境修复与污染防治重点实验室,天津300071

出　　处：《中国科技论文在线》2010年第5期350-354,共5页

基　　金：国家青年科学基金资助项目(20907023);国家自然科学基金资助项目(40971254)

摘　　要：进行了纳米铁微生物体系去除硝酸盐的柱实验研究,探讨了纳米铁添加量、纳米铁-微生物的处理方式及水力停留时间(HRT)不同时硝酸盐的去除效果及产物的生成情况。结果表明,体系中纳米铁含量由0.056g增加到0.280g时,硝酸盐的去除率由35%上升到90%,氨氮的产生量也由3.059mg/L增加至11.692mg/L;将纳米铁与微生物在26℃培养箱中放置培养5d后对硝酸盐的去除优于直接开始实验去除硝酸盐的效果;HRT从0.50h延长到2.01h时,体系中硝酸盐的去除速率增加。Column tests were carried out for nitrate removal by a nano iron-microbial system. The effects of such factores as nano-iron dose,cultivation pattern,and hydraulic retention time on the nitrate removal efficiency and the products.were studied. Results showed that with the amount of nano-iron increased from 0.056 g to 0.280 g in the system,nitrate removal rate increased from 35% to 90% and the amount of ammonia produced in the volume increased from 3.059 mg/L to 11.692 mg/L,respectively. The effect was even better when the nano-iron and microbial was placed and cultivated in the incubator at 26 ℃ for 5days than that without cultivation. In addition,the nitrate removal rate increased when the hydraulic retention time extended from 0.50 h to 2.01 h.

关 键 词：纳米铁 脱硝 柱实验 

分 类 号：TU991.2[建筑科学—市政工程]