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《Journal of Anhui Agricultural Sciences》 2011-16
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Nitrogen Removal by denitrifier and N_2O emission

LIIN Na et al(The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters,College of Environmental Science and Engineering,South China University of Technology,Guangzhou,Guangdong 510006)  
[Objective] The ability in the simultaneous nitrification and denitrification of the heterotrophic nitrifiers bacteria-NYMO and NYTE with the characteristics of aerobic denitrification and the amount of the product-N2O of the aerobic denitrifion-HWTT was researched.[Method] The capability in the nitrification and denitrification of the bacteria was tested through the analysis of the change of the concentration of NH4+-N and NO3——N.The bacteria strain—HWTT was cultured with 2 culturing ways: air-sealed flask culture and aerobic culture based on the additional supplementary of O2.[Results] The removal rate of the NH4+-N of the strain-NYMO and NYTE within 2 days was 34.60% and 35.08%,and the removal rate of NO3——N was 33.40% and 99.92%,respectively.[Conclusion] The bacteria-NYMO and NYTE was with the ability in both heterotrophic nitrification and aerobic denitrification.Under hypoxic condition,escape the highest value of N2O producing was 0.15 μmol and the ratio of N2O/(N2O+N2) was less than 0.15%;and under the aerobic condition,the amount of N2O producing was 35.71μmol and the ratio of N2O/(N2O+N2) was above 70%.
【Fund】: 中央高校基本科研业务费专项资金(No.2009ZM0034);; 广东省团队联合基金(No.9351064101000001)
【CateGory Index】: X172
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