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自养反硝化菌对硝酸盐氮去除动力学及影响因素研究

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孙涛, 唐顺, 杨琦, 尚海涛. 自养反硝化菌对硝酸盐氮去除动力学及影响因素研究[J]. 环境工程学报, 2009, 3(11): 1943-1946.
引用本文: 孙涛, 唐顺, 杨琦, 尚海涛. 自养反硝化菌对硝酸盐氮去除动力学及影响因素研究[J]. 环境工程学报, 2009, 3(11): 1943-1946.
shu
Sun Tao, Tang Shun, Yang Qi, Shang Haitao. Removal of nitrate by supported autotrophic denitrifiers[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 1943-1946.
Citation: Sun Tao, Tang Shun, Yang Qi, Shang Haitao. Removal of nitrate by supported autotrophic denitrifiers[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 1943-1946.
shu

自养反硝化菌对硝酸盐氮去除动力学及影响因素研究

  • 1.

    中国地质大学（北京）水资源与环境学院,北京 100083

  • 基金项目:

    国家自然科学基金资助项目(40102027,50578151)

    北京市自然科学基金资助项目(8052017，8092025)

    北京市教委校企合作项目(51900265005)

  • 中图分类号: O613.61

Removal of nitrate by supported autotrophic denitrifiers

  • 1.

    School of Water Resources and Environment, China University of Geosciences, Beijing 100083,China

  • Fund Project:

HTML全文

  • 摘要: 为更经济有效地去除污水中的硝酸盐，从兼性污泥中分离获得6株能氧化单质硫和还原硝酸盐的自养反硝化菌。根据各菌株的降解曲线筛选出优势菌种N-I，并研究影响菌株N-I降解性能的环境因素，如pH、温度、碳源及硝酸盐的降解动力学。实验表明，菌株N-I对硝酸盐的降解符合一级反应动力学方程，反应的半衰期t1/2为1.42 h，反应速率常数为0.488 h-1。最佳反应pH=7，最佳反应温度为30℃，最佳NaHCO3浓度为大于或等于2.5 g/L。
    Abstract: In order to find a more effective and economical way to remove nitrate in wastewaters,six kinds of autotrophic denitrifying bacterial strain,which could oxidize elemental sulfur and reduce nitrate,were screened from facultative sludge.The strain N-I was the dominant strain according to the degradation curve of each strain.The environmental factors,including pH,temperature and carbon source,which had great influence on the degradation of strain N-I and the degradation kinetics of nitrate were investigated.Through a series of studies,the removal of nitrate by strain N-I conformed to first order reaction kinetics equation with a half-life of 1.42 hours and rate constant of 0.488 h-1.The optimum reaction conditions were obtained as follows:a neutral pH of 7,30℃ and concentration of sodium bicarbonate greater than or equal to 2.5 g/L.
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  • 收稿日期:  2009-02-15
孙涛, 唐顺, 杨琦, 尚海涛. 自养反硝化菌对硝酸盐氮去除动力学及影响因素研究[J]. 环境工程学报, 2009, 3(11): 1943-1946.
引用本文: 孙涛, 唐顺, 杨琦, 尚海涛. 自养反硝化菌对硝酸盐氮去除动力学及影响因素研究[J]. 环境工程学报, 2009, 3(11): 1943-1946.
shu
Sun Tao, Tang Shun, Yang Qi, Shang Haitao. Removal of nitrate by supported autotrophic denitrifiers[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 1943-1946.
Citation: Sun Tao, Tang Shun, Yang Qi, Shang Haitao. Removal of nitrate by supported autotrophic denitrifiers[J]. Chinese Journal of Environmental Engineering, 2009, 3(11): 1943-1946.
shu

自养反硝化菌对硝酸盐氮去除动力学及影响因素研究

  • 1. 中国地质大学（北京）水资源与环境学院,北京 100083
  • 收稿日期:  2009-02-15
基金项目:

国家自然科学基金资助项目(40102027,50578151)

北京市自然科学基金资助项目(8052017，8092025)

北京市教委校企合作项目(51900265005)

摘要: 为更经济有效地去除污水中的硝酸盐，从兼性污泥中分离获得6株能氧化单质硫和还原硝酸盐的自养反硝化菌。根据各菌株的降解曲线筛选出优势菌种N-I，并研究影响菌株N-I降解性能的环境因素，如pH、温度、碳源及硝酸盐的降解动力学。实验表明，菌株N-I对硝酸盐的降解符合一级反应动力学方程，反应的半衰期t1/2为1.42 h，反应速率常数为0.488 h-1。最佳反应pH=7，最佳反应温度为30℃，最佳NaHCO3浓度为大于或等于2.5 g/L。

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