摘要
从生物陶粒反应器中筛选出6株异养硝化细菌,将异养硝化细菌扩大培养后,建立SBR反应器并进行了氨氮去除的试验研究。在SBR反应器进入稳定运行阶段时,可以观察到系统对于氨氮的去除率稳定在82.96%左右,表现出较好的氨氮去除效果;出水亚硝酸盐含量一直维持在较低的水平,其最大值不超过3.84 mg·L-1;COD的平均去除率为54.72%,基本实现了同一反应器中的有机物和氨氮的共同去除。异养硝化SBR反应器温度为29℃时,反应器对氨氮和总氮的去除能力最大为82.28%和47.27%;在pH值为8.0时,氨氮去除率最高达到80.15%。C/N<4.5时,随着C/N比的增加,氨氮和总氮的去除率快速增加;在C/N为6时,氨氮去除率最高达到87.62%。
6 heterotrophic nitrobacteria were screened from bio-ceramic reactor, The process of removing ammoniac nitrogen was done by setting the heterotrophic nitrification bacteria on the sequencing batch reactor. And the efficiency of ammoniac nitrogen removal can reach up to 82.96%, when the reactor works smoothly. The nitrite concentration of effluent was in a low level and the maxiuma value was no more than 3.84 mg/L. At the same time, the efficiency of COD was 54.72%, which presents the coinstantaneous removing of both organic and ammoniac nitrogen. When the temperature is 29 ℃, the removal rate of the ammonia-nitrogen and TN are 82.28% and 47.27%. As the pH is 8.0 the removal rate of ammonia-nitrogen is 80.15%. As the C/N rate is less than 4.5, the removal rate of the ammonia-nitrogen and the TN increased. As the C/N rate is 6, the removal rate of the ammonia-nitrogen is 87.62%.
出处
《生态环境学报》
CSCD
北大核心
2012年第9期1599-1603,共5页
Ecology and Environmental Sciences
基金
国家科技支撑计划(2012BAC04B02)
国家自然科学基金项目(51008242)
陕西省教育厅专项科研计划项目(12JK0896)
西安建筑科技大学校基础基金(JC1207)
关键词
序列间歇式活性污泥法
异养硝化
硝化特性
Sequencing Batch Reactor
heterotrophic nitrification
nitrifying characteristic
