| 摘要 |
A method for concentration-culturing a nitrifying bacteria is provided to remove nitrogen from wastewater smoothly and efficiently by nitrifying nitrogen ingredients in the wastewater. A method for concentration-culturing a nitrifying bacteria comprises a step of culturing Nitrosomonas europaea selectively for nitrifying wastewater containing highly concentrated nitrogen in a culture medium composition including 0.5-1.0g/l of KH2PO4, 10.0-15.0g/l of Na2HPO4, 2.0-5.0g/l of (NH4)2SO4, 0.1-1.0g/l of NaHCO3, 0.001-0.01g/l of CaCl2.2H2O, 0.005-0.01g/l of MgSO4.7H2O, and 0.0005-0.01g/l of Fe-EDTA. Further, a culturing condition is 2 to 3 ppm of oxygen concentration and 25 to 40 °C of temperature.
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