生物沸石处理低含量氨氮水影响因素研究  

EFFECTIVE FACTORS OF LOW-CONCENTRATION AMMONIUM NITROGEN REMOVAL BY BIOLOGICAL ZEOLITE

作　　者：胥红[1] 邓慧萍[1] 潘若平[1] 刘晓聪[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《水处理技术》2010年第4期28-31,共4页Technology of Water Treatment

基　　金：建设部水体污染控制与治理科技重大专项(2008ZX07425-007)

摘　　要：研究了HRT、进水氨氮含量、曝气时间、pH对生物沸石滤柱去除饮用水低含量氨氮效果的影响。结果表明,HRT越长,对氨氮的去除效果越好,HRT为24min时,较为经济合理;随着进水氨氮含量的降低,氨氮去除率下降,进水氨氮的质量浓度低于2mg·L-1时,生物沸石柱出现氨氮解吸现象;采用间歇曝气方式,既不影响硝化作用又节约能耗;进水pH升高,氨氮去除率增加,但pH在7.7～8.5氨氮去除率增幅不大,反应最佳pH为7.2～7.4。The effect of HRT, ammonium concentration of inflow, aeration time, pH on low concentration ammonium removal in drinking water were investigated. The results showed the longer the HRT is, the higher removal rate of ammonium is, and 24 min is a reasonable HRT when both effect and cost were considered; with the ammonium concentration of inflow decreased the removal rate of ammonium dropped. Biological zeolite column desorbed ammonium nitrogen when the ammonium concentration of inflow was below 2 mg·L^-1, Intermittent aeration did not have an impact on nitrification but save energy; the higher the pH of inflow is, the higher removal rate of ammonium is; but the removal rate of ammonium increased slightly when pH is between 7.7 and 8.5, and the best range ofpH is 7.2 to 7.4 .

关 键 词：生物沸石 氨氮 离子交换 硝化反应 影响因素 

分 类 号：TU991.2[建筑科学—市政工程]