反应器分区提高生物接触氧化硝化性能的研究

被引:9
作者
李先宁 [1 ]
宋海亮 [1 ]
吕锡武 [1 ]
西村修 [2 ]
机构
[1] 东南大学环境科学与工程系
[2] 日本东北大学
关键词
生物接触氧化反应器; 反应器分区; 硝化作用; 硝酸菌; 亚硝酸菌;
D O I
暂无
中图分类号
X703 [废水的处理与利用];
学科分类号
摘要
为克服普通生物接触氧化反应器中因硝化菌与有机物降解菌的竞争劣势而影响硝化活性的问题,将反应器简单分隔,通过微生物生态调控,以提高硝化性能.结果表明,在BOD、TN负荷分别为1.0、0.19kg/(m3·d)的中等负荷条件下,反应器分区后硝化率提高33%.反应器两区分别形成以降解有机物和硝化为主的功能区.分区式接触氧化反应器后区段的硝化速率是单区式反应器的2.8~4.5倍,亚硝酸菌密度提高1个数量级.分区式反应器在0.26kg/(m3·d)的高TN负荷条件下运行时,由于硝化细菌活性降低导致硝化率降低,而在0.08kg/(m3·d)的低负荷条件下运行时,后区段过低的氨氮浓度限制了硝化能力的发挥,因此分区式反应器宜在中等负荷下运行.
引用
收藏
页码:62 / 66
页数:5
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