在SBBR中接种硝化菌时SND特性及机理  

TENTATIVE RESEARCH ON SIMULTANEOUS NITRIFICATION AND DENITRIFICATION(SND) IN SBBR WITH INOCULATING NITROBACTERIA

作　　者：徐伟锋[1] 孙力平[2] 张芳[1] 顾国维[1] 

机构地区：[1]同济大学环境科学与工程学院污染控制与资源化国家重点实验室,上海200092 [2]天津城市建设学院,天津300384

出　　处：《水处理技术》2005年第4期21-23,34,共4页Technology of Water Treatment

基　　金：天津市自然科学基金项目(013608211)

摘　　要：通过加硝化菌与未加硝化菌的对比试验,对序批式生物膜法(SB BR)中所表现出来的脱氮特性进行了试验分析,研究探讨生物膜法SN D脱氮的机理:好氧情况下生物膜的吸附作用为反硝化菌提供碳源和能源;SN D反应主要发生在好氧生物膜层和兼性生物膜分界内;在深层的反硝化菌利用生物膜中储存的有机物作为有机碳源,将好氧生物膜中产生的N O3--N转化为N2。同时加入一定量的硝化菌能较好地提高硝化、脱氮率。Through comparative experiment with and without adding nitrobacteria, the nitrongen removal characteristics of the sequencing batch biofilm reactor(SBBR) were studied. The results indicated that, under the conditions of ratio of carbon to nitrogen being eight the COD loading of influent water was 1.008kg COD/m3·d, DO being 2.0mg/L, the nitrogen removal rate caused by simultaneous nitrification and denitrification in SBBR was approximate to 80%. And the nitrogen removal rate in the reactor with adding nitrobacteria was 20% higher than that in the reactor without adding the same. These results possess the practical guiding significance for engineering application of this process

关 键 词：SND 机理 序批式生物膜法 接种 反硝化菌 好氧生物膜 对比试验 试验分析 吸附作用 有机碳源 有机物 脱氮率 分界 

分 类 号：X703.1[环境科学与工程—环境工程] S646.14[农业科学—蔬菜学]