摘要
为明确生物活性滤池对水中氨氮(NH4+-N)和亚硝酸盐氮(NO2--N)的去除效果及影响因素,采用连续流生物活性滤池装置开展试验研究。试验期间进水NH4+-N在0.69～1.25 mg·L-1,NO2--N浓度为0.06～0.38 mg·L-1,试验装置处理规模为180 L·d-1。结果表明,挂膜成功时,NH4+-N和NO2--N去除效率分别为71.32%～77.78%和87.1%～98.6%;稳定运行期间异养菌和硝化细菌空间竞争较弱,表现在沿程对CODMn、NH4+-N和NO2--N去除效果集中在35 cm以上的空间;在低于5℃状况运行,生物活性滤池对NH4+-N有稳定的去除,而NO2--N去除效果出现明显降低。
A continuous flow device was used to determine the removal of NH4＋-N, NO2--N in the water through biological aerated filter （BAF） system, and its influence factors were also analyzed. During the experi- ment, the value of NH4＋-N was 0.69-- 1.25 mg·L-1, and the value of NO2--N was 0.06--0.38 mg.L-1 in raw water. The charge of BAF was 180 L·d-1. The results demonstrated that the removal rates of NH4＋-N and NO2--N were 71.32%--77.78% and 87.1%--98.6% in the end of biofilm formation; the competition between autotrphic bacte- ria and nitrifying bacteria in the space was weaker during stable operation as BAF removed CODMn, NH4＋-N and NO2--N mainly in the top of 35 cm; below 5℃, the removal rate of NH4＋-N was stable but that of NO2--N was descended.
出处
《安徽农业大学学报》
CAS
CSCD
北大核心
2013年第1期116-119,共4页
Journal of Anhui Agricultural University
基金
安徽省高等学校优秀青年人才基金(2012SQRL065ZD)
安徽生态省建设省级引导资金项目共同资助
