三维电极法处理污染河水脱氮的试验研究  

Nitrogen removal performance of three-dimensional electrode technology in polluted river water treatment

作　　者：田婵婵[1] 李福勤[1] 常建闯[1] 齐国瑞[1] 

机构地区：[1]河北工程大学城市建设学院,河北邯郸056038

出　　处：《工业用水与废水》2010年第2期23-25,共3页Industrial Water & Wastewater

摘　　要：采用三维电极法处理以城市污水厂二级出水为主要来源的污染河水,考察了电解时间、槽电压、涂膜活性炭体积分数及曝气对脱氮效果的影响。试验结果表明:三维电极法能有效去除废水中的含氮化合物,在未曝气的情况下,反应时间为40min,槽电压为15V,涂膜活性炭体积分数为20%时,脱氮效果最佳,NH3-N、NO2--N、TN的去除率分别达到75%、95%、49%;曝气有利于提高脱氮效率,TN、NH3-N的去除率均提高了20%左右。三维电极法是一种有效的脱氮新技术。Three-dimensional electrode（TDE） technology was used to treat polluted fiver water with secon- dary effluent from municipal wastewater treatment plant as the main pollution source, the effects of electrolysis time, cell voltage, volume fraction of coated activated carbon and aeration on nitrogen removal were investigated. The results showed that： three-dimensional electrode technology had a good nitrogen removal efficiency, the best effect was obtained when there was no aeration, the reaction time was 40 rain, the cell voltage was 15 V, the volume fraction of the coated activated carbon was 20%, the removal rates of NH3-N, NO2--N and TN reached 75%, 95% and 49% respectively; aeration could help improve the nitrogen removal efficiency and increase the TN and NH3- N removal rates about 20%. It could be seen that, TDE was a new and effective nitrogen removal technology.

关 键 词：三维电极法 脱氮 曝气 涂膜活性炭 

分 类 号：X703.1[环境科学与工程—环境工程]