东南大学学报（自然科学版）2017，Vol.47Issue(1)：170-176,7.DOI:10.3969/j.issn.1001-0505.2017.01.029
施氏假单胞菌应用于IPS技术的可行性试验研究
Feasibility experiment on using pseudomonas stutzeri in IPS
摘要
Abstract
To explore the feasibility of the reinforcement of liquefiable sand by nitrogen,the metabo-lites of pseudomonas stutzeri,the denitrification condition and the gas production efficiency of soil are studied.The influences of different carbon sources on the reduction rates of NO3--N and NO2--N as well as the impacts of the temperature and the initial pH value on the final saturation,the average rate of gas production,the initial stagnation period are analyzed.The optimum nitrogen source,the suitable ranges of the temperature and the initial pH value are determined.The experimental results show that Na-citrate is the optimum nitrogen source.The reduction rate of NO3--N can reach 100%at 21 h.NO2--N accumulates first before reduction with 0.82 mmol/L residual.The bacteria has the ability to generate gas when temperature is from 4 to 30 ℃.With the increase of the temperature, the average rate of gas production increases significantly and the final saturation of the sand simple decreases a little.When the temperature is 20 ℃and the initial pH value is 5 to 9 ,the bacteria can smoothly generate gas in the sand simple.In the neutral and alkaline environments,the final satura-tions of the sand simple are basically consistent.In the acidic environment,the final saturation of the sand simple decreases with the decrease of the initial pH value.The average rate of gas production of the bacteria in the sand simple decreases with the decrease of the initial pH value.Compared with the existing biogas methods,the application of this bacteria in induced partial saturation(IPS)has ad-vantages such as the fast average rate of gas production,short initial stagnation period,simple tech-nology and so on.关键词
IPS/施氏假单胞菌/反硝化作用/温度/pH值Key words
induced partial saturation(IPS)/pseudomonas stutzeri/denitrification/temperature/pH分类
建筑与水利引用本文复制引用
彭尔兴,章定文,周利,孙鹏程..施氏假单胞菌应用于IPS技术的可行性试验研究[J].东南大学学报（自然科学版）,2017,47(1):170-176,7.基金项目
水利部土石坝破坏机理与防控技术重点实验室开放研究基金资助项目（YK914021）、中央高校基本科研业务费专项资金资助项目（2242014R30020）、江苏高校“青蓝工程”优秀青年骨干教师培养对象资助项目、江苏省创新计划资助项目（KYLX15＿0158）． （）
