本文尝试了一种全新的短程硝化方法。利用光催化氧、还原和生物还原联合法CPORBR(COMBINATION OF PHOTOCATALYSTIC OXIDATION、REDUCTION WITH BIOLOGICAL REDUCTION)对含氨氮废水进行脱氮处理,以寻找一种反应稳定,效果可靠,适应较大负荷变化,节省有机物投加量的新型短程硝化方法。
本文则是在以往的研究的基础上,借用从生物脱氨氮工艺中提出的概念—短程硝化,即:将NH_4~+氧化控制在亚硝化阶段,之后再进行反硝化,也就是,经历NH_3/NH_4~+—N→NO_2~-—N(亚硝化)→NO+2~-—N(反亚硝化)→N_2,而不经历NH_3/NH_4~+—N→NO_2~-—N(亚硝化)→NO_3~+—N(硝化)→NO_2~-—N(反亚硝化)→N_2的全过程,分别研究了生物反硝化;光催化氧化降解的氨氮;光催化还原NO_3~-,以提高NO_2~-/NO_3~-的比值;并且将半导体光催化氧化,光催化还原和生物反硝化联合,把半导体光催化氧化,
【英文摘要】
A brand new short-cut denitrification was tried in a laboratory. A combination technique (CPORBR) of photocatalytic oxidation reduction with biological reduction was studied , in an effort to remove nitrogen in the water effectively, steadily with advantages that could save amount of organic substance used in the process of denitrification.In the paper, biological denitrification, photoc-atolystic oxidation of NH_4~+ and photocatlystic reduction of N03~- were studied separately, based on a biological deni...
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