CAJ | 학술논문

通过土柱实验模拟再生水在粉土层下渗过程中NO_3~--N、NO_2~--N、NH_4~+-N的迁移转化规律.结果表明,实验温度为23.2～25.9 ℃时,土柱内发生反硝化反应,NO_3~--N的去除率为9.74%～39.16%,反应符合一级反应动力学方程,衰减系数为0.096 8～0.553 1 m-1;实验温度低于19 ℃时,土柱内反硝化反应消失,说明低温是制约再生水在土柱内发生反硝化作用的主要因素.
통과토주실험모의재생수재분토층하삼과정중NO_3~--N、NO_2~--N、NH_4~+-N적천이전화규률.결과표명,실험온도위23.2～25.9 ℃시,토주내발생반초화반응,NO_3~--N적거제솔위9.74%～39.16%,반응부합일급반응동역학방정,쇠감계수위0.096 8～0.553 1 m-1;실험온도저우19 ℃시,토주내반초화반응소실,설명저온시제약재생수재토주내발생반초화작용적주요인소.
The process of reuse water infiltration in silt was simulated with soil-column method, and the migration and transformation of NO_3~--N, NO_2~--N, and NH_4~+-N in silt were studied. The experiment result showed that denitrification occurred when temperature was 23.2-25.9 ℃, with the NO_3~--N removal rate of 9.74%-39.16%. The process of degradation followed the first-order reaction kinetics model, with the attenuation coefficients ranged from 0.096 8 to 0.553 1 m-1. Denitrification process disappeared when the water temperature was lower than 19 ℃, which indicated that lower temperature inhibited the removal of NO_3~--N.