Chongqing Key Laboratory of Soil Multiscale Interfacial Process, College of Resources and Environments, Southwest University, Chongqing 400716, China.
Chongqing Key Laboratory of Soil Multiscale Interfacial Process, College of Resources and Environments, Southwest University, Chongqing 400716, China.
Bioresour Technol. 2016 Jan;200:493-9. doi: 10.1016/j.biortech.2015.10.064. Epub 2015 Oct 23.
A hypothermia aerobic nitrite-denitrifying bacterium, Pseudomonas tolaasii strain Y-11, was found to display high removal capabilities for heterotrophic nitrification with ammonium and for aerobic denitrification with nitrate or nitrite nitrogen. When strain Y-11 was cultivated for 4days at 15°C with the initial ammonium, nitrate and nitrite nitrogen concentrations of 209.62, 204.61 and 204.33mg/L (pH 7.2), the ammonium, nitrate and nitrite removal efficiencies were 93.6%, 93.5% and 81.9% without nitrite accumulation, and the corresponding removal rates reached as high as 2.04, 1.99 and 1.74mg/L/h, respectively. Additionally, ammonium was removed mainly during the simultaneous nitrification and denitrification process. All results demonstrate that P. tolaasii strain Y-11 has the particularity to remove ammonium, nitrate and nitrite nitrogen at low temperatures, which guarantees it for future application in winter wastewater treatment.
一株嗜冷好氧亚硝酸盐脱氮菌——洋葱伯克霍尔德氏菌 Y-11，被发现对异养硝化作用中铵的去除和有氧反硝化作用中硝酸盐或亚硝酸盐氮的去除具有很高的去除能力。当菌株 Y-11 在 15°C 下培养 4 天，初始铵、硝酸盐和亚硝酸盐氮浓度分别为 209.62、204.61 和 204.33mg/L（pH 7.2）时，没有亚硝酸盐积累，铵、硝酸盐和亚硝酸盐的去除效率分别达到 93.6%、93.5%和 81.9%，相应的去除速率分别高达 2.04、1.99 和 1.74mg/L/h。此外，铵主要在同步硝化反硝化过程中被去除。所有结果表明，洋葱伯克霍尔德氏菌 Y-11 具有在低温下去除铵、硝酸盐和亚硝酸盐氮的特殊性，这保证了它在冬季污水处理中的未来应用。
