城市中水综合利用工程中高效好氧反硝化菌的筛选

生物工程论文编号:SW023  论文字数:8314,页数:20

目录 
摘 要： I
英文摘要:  . II
1.绪论 1
1.1好氧反硝化现象的发现 1
1.2好氧反硝化的作用机制 1
1.3好氧反硝化细菌的筛选方法 3
1.4好氧反硝化细菌的反硝化能力的检测 3
1.4.4讨论 4
1.5好氧反硝化细菌的作用与发展前景 4
2.实验内容 6
2.1实验材料和方法 6
2.2好氧反硝化能力的测定 6
2.3测定方法与仪器 7
3.结果与讨论 11
3.1好氧反硝化菌的形态 11
3.2好氧反硝化菌株的反硝化能力比较 11
4.总结 13
致  谢 14
参考文献 15

论文编号:SW023  论文字数:8314,页数:20

摘 要：随着地表水环境质量的恶化和工农业的发展对水资源需求的增加，水资源问题日益突出，城市中水的综合利用是缓解水资源矛盾的有效举措。但影响中水回用所面临的最大问题之一是氨浓度的控制，因此必须有效地予以去除。同时，脱氮也是当前水环境质量改善和水污染控制领域的重要课题。目前，关于脱氮理论与技术已有不少研究报道，主要是厌氧反硝化理论，在实践中的应用存在很大的缺陷，而对于贫营养条件下好氧脱氮研究很少。为获得更具应用价值的好氧硝化菌，采用连续曝气的方法从XXXXXXXX学院西密湖底泥中筛选出5株好氧反硝化细菌A1,A2,C1,D1，E1。并用国标法对其反硝化能力进行检测，得到其TN的去除率在85%-93%，表明对TN的去除率较好。并且对筛选出来的菌株进行了保藏。
关键词：好氧反硝化菌；筛选；高效；检测

Screening of Efficient aerobic denitrifiers in the
Urban water utilization project

Abstract: As the surface water quality deterioration and the development of industry and agriculture increased demands on water resources. Water resources become increasingly prominent. Comprehensive utilization of urban water is an effective measure to alleviate the conflict of water resources. But one of the biggest problems of water reuse is facing the ammonia concentration in control, it must be effectively removed . And with the problem of eutrophication of surface water and the improving of environmental quality standards. nitrogening has become the improvement issues in the field of water quality and water pollution control. Now, a lot of theories and techniques of the biological nitrogen removal have been reported,but the denitrification of the source water has been studied little This article describes that we have found five denitrifying bacteria,whitch has the high efficiency of TN removalling. And the TN removalling are from85%-93%.And we have preserved these five strains.
Keywords：denitrifying bacteria；screening of strain；efficient；detection