碳氮比对猪场污水处理过程中氧化亚氮排放的影响。
Effect of C/N ratio on nitrous oxide emission from swine wastewater treatment process.
作者信息
Kishida N, Kim J H, Kimochi Y, Nishimura O, Sasaki H, Sudo R
机构信息
Department of Environmental Resources Engineering, Waseda University, 3-4-1 Ohkubo, Shinjyuku-ku, Tokyo 1698555, Japan.
出版信息
Water Sci Technol. 2004;49(5-6):359-65.
To evaluate control parameters for nitrous oxide (N2O) emissions in the swine wastewater treatment process, the N2O emission was compared in the activated sludge from SBRs acclimated in different carbon/nitrogen (C/N) ratios. N2O emission from a denitrification phase was very strongly dependent on C/N ratio of swine wastewater, and the total N2O emission in the operating condition of BOD5/TN ratio of 2.6 was approximately 270 times greater than that in BOD5/TN ratio of 4.5. However, the effect of C/N ratio on N2O emission amount from nitrification was not significant in an oxic phase study. It is considered that stabilization of the C/N ratio through optimal solid-liquid separation of slurry or use of an external carbon source is indispensable for effective N2O emission control from nitrogen removal process of swine wastewater.
为评估猪废水处理过程中氧化亚氮（N₂O）排放的控制参数，对不同碳氮（C/N）比驯化的序批式反应器（SBR）活性污泥中的N₂O排放进行了比较。反硝化阶段的N₂O排放非常强烈地依赖于猪废水的C/N比，在BOD₅/TN比为2.6的运行条件下，总N₂O排放量约为BOD₅/TN比为4.5时的270倍。然而，在好氧阶段研究中，C/N比对硝化过程中N₂O排放量的影响并不显著。据认为，通过对猪粪浆进行最佳固液分离或使用外部碳源来稳定C/N比，对于有效控制猪废水脱氮过程中的N₂O排放是必不可少的。
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