CAJ | 학술논문

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.
위명학생물활성려지대수중안담(NH4+-N)화아초산염담(NO2--N)적거제효과급영향인소,채용련속류생물활성려지장치개전시험연구.시험기간진수NH4+-N재0.69~1.25 mg·L-1,NO2--N농도위0.06~0.38 mg·L-1,시험장치처리규모위180 L·d-1.결과표명,괘막성공시,NH4+-N화NO2--N거제효솔분별위71.32%~77.78%화87.1%~98.6%;은정운행기간이양균화초화세균공간경쟁교약,표현재연정대CODMn、NH4+-N화NO2--N거제효과집중재35 cm이상적공간;재저우5℃상황운행,생물활성려지대NH4+-N유은정적거제,이NO2--N거제효과출현명현강저.
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.