| 低C/N城市污水亚硝酸型硝化试验研究 |
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| 引用本文： | 姚晓园,陆天友,魏琛. 低C/N城市污水亚硝酸型硝化试验研究[J]. 地球与环境, 2008, 36(2) |
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| 作者姓名： | 姚晓园 陆天友 魏琛 |
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| 作者单位： | 贵州省建筑设计研究院,贵州,贵阳,550002;贵州大学土木建筑工程学院,贵州,贵阳,550002;重庆工商大学环境与生物工程学院,重庆,400067 |
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| 摘 要： | 对低C/N城市污水进行亚硝酸型硝化的可行性、稳定性进行了研究,具体研究了系统的启动培养、稳定亚硝化、污泥毒害、短暂亚硝化、污泥适应等5个阶段及污泥的适应性问题。低C/N城市污水可实现稳定的亚硝酸型硝化,其亚硝化率最高可达90%。试验中合理确定反应周期的首要因素是系统出水NH4+-N的浓度至少达到50%降解率,其次是出水中NOx-NN应主要以NO2-N为主。根据泥龄维持所能维持的MLSS浓度确定系统泥龄在合理范围。系统不排泥和较长泥龄将不能通过排泥,将系统中硝化菌"洗出",硝化菌也会最终适应亚硝酸型硝化的环境因素,从而导致亚硝酸型硝化现象的不可逆消失。杆状污泥絮体为亚硝酸型硝化现象的特征污泥相。
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| 关 键 词： | 亚硝化 亚硝酸盐氮积累 泥龄 污泥适应性 |
PARTIAL NITRIFICATION TO NITRITE IN URBAN WASTEWATER WITH LOW C/N |
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| YAO Xiao-yuan,LU Tian-you,WEI Chen. PARTIAL NITRIFICATION TO NITRITE IN URBAN WASTEWATER WITH LOW C/N[J]. Earth and Environment, 2008, 36(2) |
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| Authors: | YAO Xiao-yuan LU Tian-you WEI Chen |
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| Affiliation: | 1.Guizhou Province Architectural Design and Research Institute;Guiyang 550002;China;2.School of Civil Construction and Engineering;Guizhou University;Guiyang 50002;3.School of Environment and Biology Engineering;Chongqing Technology and Business University;Chongqing 400067;China |
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| Abstract: | This paper dealt with the feasibility and stability of partial nitrification to nitrite in urban wastewater with low C/N,in terms of start-up,stable partial nitrification,sludge poisoning,short partial nitrification and sludge adaptation.During the partial nitrification process,the stable nitrite accumulation can reach up to 90% in the urban wastewater with low C/N.The determination of reaction cycle required for NH4+-N degradation ratio with at least 50% and the NOx-N in effluent dominated by NO2-N.The slu... |
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| Keywords: | partial nitrification nitrite accumulation sludge age sludge adaptability |
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