铁炭微电解工艺对高硝态氮制药废水的脱氮效能  

Study on Nitrogen Removal Efficiency of Ferric-carbon Micro-electrolysis Process in Treatment of High Nitrate Nitrogen Pharmaceutical Wastewater

作　　者：周健[1] 陈博[1] 陈垚[1] 龙腾锐[1] 胡斌[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《中国给水排水》2011年第9期78-80,84,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07315-005)

摘　　要：以高硝态氮、难降解的有机制药废水为处理对象,探讨了铁炭微电解工艺对其脱氮效能及影响因素。结果表明:填料粒径、pH值、铁炭比、气水比、停留时间等因素均对铁炭微电解系统的脱氮效能有显著影响;在铁屑和活性炭粒径均为35目、pH值为3、Fe/C值为3∶1(体积比)、气水比为5∶1、停留时间为1.5 h的最佳条件下,当进水TN、NH4+-N和NO3--N的平均浓度分别为823、30和793 mg/L,BOD5/COD值为0.1时,铁炭微电解系统对TN、NH4+-N和NO3--N的平均去除率分别可达到51.5%、70%和50.94%。The nitrogen removal efficiency and influence factors of ferric-carbon micro-electrolysis process in treatment of high nitrate nitrogen and refractory organic pharmaceutical wastewater were investigated. The results show that media size, pH, Fe/C ratio, air-water ratio, reaction time and so on have significant effect on the nitrogen removal efficiency of ferric-carbon micro-electrolysis system. Under the optimal conditions of iron and carbon sizes of 35 mesh, pH of 3, Fe/C ratio of 3 ： 1, air-water ratio of 5 ： 1 and retention time of 1.5 h, the removal rates of TN, NH4^＋ -N, NO3 -N are 51.5%, 70% and 50.94% respectively, when the influent TN, NH4^= - N, NO3^- - N and BOD5/COD are 823 mg/L, 30 rag/L, 793 mg/L and 0.1 respectively.

关 键 词：铁炭微电解 制药废水 硝态氮 脱氮效能 

分 类 号：X703[环境科学与工程—环境工程]