作　　者： ; ; ; ; ;

机构地区： 湖南大学环境科学与工程学院

出　　处： 《中国环境科学》 2005年第2期222-225,共4页

摘　　要： 研究了具有全程自养脱氮作用的生物膜中无机碳源浓度、pH值、溶解氧(DO)对全程自养脱氮的影响.结果表明,当NaHCO3浓度从1.75g/L上升到2.50g/L时,反应体系中的pH值从7.6~8.0上升到8.8左右,氨氮转化率和总无机氮去除率分别急剧下降到53%和48.8%.在进水氨氮负荷为60g/(m3(d)时,最佳DO应控制在0.5~0.7mg/L,此时氨氮转化率达到90%以上. The influence of inorganic carbon concentration, pH value and dissolved oxygen (DO) in biofilm possessing deammonification action was studied. The NaHCO3 concentration increased from 1.75 g/L to 2.50 g/L, the pH value in the reaction system increased from 7.6-8.0 to about 8.8, the conversion rate of ammonium nitrogen and total inorganic nitrogen removal rate all decreased dramatically to 53% and 48.8% respectively. When the ammonium-nitrogen load of input water was 60 g/(m3·d), the best DO concentration should be controlled at 0.5-0.7 mg/L. Under these conditions, the conversion rate of ammonium-nitrogen reached higher than 90%.

关 键 词： 全程自养脱氮 短程硝化 厌氧氨氧化 自由氨

领　　域： [环境科学与工程]