论文标题:一株氨氧化菌的分离、生物学特性与系统发育分析
Identification and the Analysis of the Biological Characteristic and Systematic Growth of an Isolated Ammonia Oxydation Bcteria
论文作者
论文导师 徐恒,论文学位 硕士,论文专业 微生物
论文单位 四川大学,点击次数 152,论文页数 74页File Size2297K
2006-05-17论文网 http://www.lw23.com/lunwen_428218902/
ammonia oxidation bacteria; nitrification-denitrification;actinomyces;biological character; Actinomycetes
我国氮素污染所致的水体富营养化正危害农业、渔业和旅游业等诸多行业，并对饮水和食品安全造成巨大威胁。氮主要以NH_4~+、NO_2~-、NO_3~-等形式对水体造成污染，对氮素污染的治理方法有很多，而最经济且对环境友好的方法当推生物脱氮了。传统生物脱氮是由好氧条件下的硝化作用与厌氧条件下的反硝化作用完成的，硝化作用主要微生物菌群包括：氨氧化细菌和亚硝酸细菌，前者如亚硝酸单孢菌属(Nitrosomonas)、亚硝酸球菌属(Nitrosoccus)、亚硝酸螺菌属(Nitrosospira)及亚硝酸叶菌属(Nitrosolobus)等。后者包括硝酸球菌属(Nitrococcus)、硝酸杆菌属(Nitrobacter)等。而反硝化细菌则有古生菌界、Proteobacter门各纲的部分菌株以及非Proteobacter门的Bacillus、Corynebacterium、Prankia Nocardia等。 新型的好氧硝化—反硝化生物脱氮技术因其较少的建设经费，成本投入和在处理过程中更易控制等优点而成为生物脱氮领域新的研究和发展方向。目前已知的好氧硝化—反硝化菌有：粪产碱菌(Alcaligenes faecalis)，泛养硫球菌(Thiosphaera pantotropha)(现已更名为脱氮副球菌(Paracoccus denitrification))和红球菌属(Rhodococcus sp.)它们能同时利用氧和硝酸作为电子受体以获得高生长率。 本文从养殖场废水中筛选到一株能同时硝化—反硝化的功能菌YZC，并测定了其部分生物学特性。YZC菌株兼性厌氧，革兰氏阳性，杆状；菌落干燥、圆形隆起、边缘锯齿状，在不同培养基上菌落颜色有所变化。该菌能以硝酸
In china, the eutrophication induced by the nitrition pollution is haming the agriculture, fishing, tourism, and so on. it is also threaten the safe of drinking water and the foods. nitrition pollute the waterwhen it act in the way of NH_4~+、 NO_2~-、 N0_3~- , et al. there are many methords to control the nitrition pollution, among which the most economical and good to enviroment way is bio-denitrogenation. the traditional bio-denitrogenation is built up of aerobic nitrification and anaerobic denitrification, the nitrifier are as follow: ammonia -oxidizing bacteria and nitrosomonas, ammonia-oxidizing bacteria includes Nitrosomonas、 Nitrosoccus、 Nitrosospira and Nitrosolobus et al. ;nitrosomonas includes Nitrococcus、 Nitrobacter, et al. and the dinitrifier have some of the archaebacteria、 Proteobacter and Bacillus、 Corynebacterium、 Prankia Nocardia of the Proteobacter, et al.The new aerobic nitrification-denitrification has become the new reseach and developing aim in the field of the bio-nitrification, because of the small outlay for construction, low cost devotion and easy to control et al.. at present,the reported aerobic nitrification -denitrification bacteria are as follow: Alcaligenes faecalis, Thiosphaera pantotropha (now, it is re-named as Paracoccus deni
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