生物炭三维电极对水中氨氮的去除机理

发布时间：2018-06-30 08:12

本文选题：三维电极 + 生物炭　；参考：《哈尔滨工业大学学报》2016年08期

【摘要】：为考察生物炭三维电极对水中氨氮的作用机制,以生物炭为反应介质构建三维电极反应器,研究其对无氯水体中氨氮的去除效果,并探究水中氨氮的转化机理.结果表明,生物炭三维电极可以在短时间内对氨氮高效去除(氨氮初始质量浓度ρ0=100 mg/L,t=3 h,η=45.72%),去除过程符合一级动力学模型,且氨氮的转化过程是一个消耗OH-的反应过程.反应器系统中反应产物分析证明,生物炭吸附作用对氨氮去除贡献甚微,氨氮主要通过直接氧化和间接氧化作用得以去除,最终转化为等量的N2和NO3--N而得以去除.
[Abstract]:In order to investigate the action mechanism of biochar three dimensional electrode on ammonia nitrogen in water, a three dimensional electrode reactor was constructed with biological carbon as reaction medium to study the removal effect of ammonia nitrogen in chlorine free water and the mechanism of ammonia nitrogen conversion in water. The results showed that the removal of ammonia nitrogen (100 mg 路L ~ (-1) 路L ~ (-1) 路L ~ (-1) of ammonia nitrogen was highly effective in a short period of time, and the removal process was in accordance with the first-order kinetic model, and the conversion process of ammonia nitrogen was an OH- consuming reaction process. The analysis of reaction products in the reactor system showed that biochar adsorption had little contribution to ammonia nitrogen removal. Ammonia nitrogen was removed mainly by direct oxidation and indirect oxidation, and then converted to the same amount of N _ 2 and no _ 3-N.
【作者单位】：重庆大学城市建设与环境工程学院;三峡库区生态环境教育部重点实验室(重庆大学);重庆市环境工程评估中心;
【基金】：国家水体污染控制与治理科技重大专项(2012ZX07102-001-004) 重庆大学大型仪器设备开放基金(201406150062)
【分类号】：X703.1

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