城市中水綜合利用工程中高效好氧反硝化菌的篩選

生物工程論文編號:SW023  論文字數:8314,頁數:20

目錄 
摘 要： I
英文摘要:  . II
1.緒論 1
1.1好氧反硝化現象的發現 1
1.2好氧反硝化的作用機制 1
1.3好氧反硝化細菌的篩選方法 3
1.4好氧反硝化細菌的反硝化能力的檢測 3
1.4.4討論 4
1.5好氧反硝化細菌的作用與發展前景 4
2.實驗內容 6
2.1實驗材料和方法 6
2.2好氧反硝化能力的測定 6
2.3測定方法與儀器 7
3.結果與討論 11
3.1好氧反硝化菌的形態 11
3.2好氧反硝化菌株的反硝化能力比較 11
4.總結 13
致  謝 14
參考文獻 15

論文編號:SW023  論文字數:8314,頁數:20

摘 要：隨著地表水環境質量的惡化和工農業的發展對水資源需求的增加，水資源問題日益突出，城市中水的綜合利用是緩解水資源矛盾的有效舉措。但影響中水回用所面臨的最大問題之一是氨濃度的控制，因此必須有效地予以去除。同時，脫氮也是當前水環境質量改善和水污染控制領域的重要課題。目前，關于脫氮理論與技術已有不少研究報道，主要是厭氧反硝化理論，在實踐中的應用存在很大的缺陷，而對于貧營養條件下好氧脫氮研究很少。為獲得更具應用價值的好氧硝化菌，采用連續曝氣的方法從XXXXXXXX學院西密湖底泥中篩選出5株好氧反硝化細菌A1,A2,C1,D1，E1。并用國標法對其反硝化能力進行檢測，得到其TN的去除率在85%-93%，表明對TN的去除率較好。并且對篩選出來的菌株進行了保藏。
關鍵詞：好氧反硝化菌；篩選；高效；檢測

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