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硫氮比对废水脱氮与沼气脱硫耦联功能茵的影响
引用本文:陈子爱,邓良伟,贺莉.硫氮比对废水脱氮与沼气脱硫耦联功能茵的影响[J].环境科学,2011,32(5):1394-1401.
作者姓名:陈子爱  邓良伟  贺莉
作者单位:农业部沼气科学研究所,成都,610041
基金项目:国家自然科学基金项目(30671540)
摘    要:从废水脱氮与沼气脱硫耦联反应器中分离到了2株同步脱氮除硫功能菌--荧光假单胞菌(Pseudomonas fluorescens)和铜绿假单胞菌(Pseudomonas aeruginosa).在pH 7.0,温度30℃,无供氧,培养时间2 d的条件下进行了2株功能菌纯培养的同步脱氮除硫效果试验,研究了不同硫氮比对同步脱...

关 键 词:硫氮比  菌株  猪场废水  脱氮  沼气  脱硫
收稿时间:2010/5/31 0:00:00
修稿时间:2010/8/23 0:00:00

Effect of Sulfide to Nitrate Ratios on the Strains Coupling Nitrogen Removal from Wastewater and Hydrogen Sulfide Removal from Biogas
CHEN Zi-ai,DENG Liang-wei and HE Li.Effect of Sulfide to Nitrate Ratios on the Strains Coupling Nitrogen Removal from Wastewater and Hydrogen Sulfide Removal from Biogas[J].Chinese Journal of Environmental Science,2011,32(5):1394-1401.
Authors:CHEN Zi-ai  DENG Liang-wei and HE Li
Institution:Biogas Scientific Research Institute of Ministry of Agriculture,Chengdu 610041, China. cza0903@yahoo.com.cn
Abstract:Two strains Pseudomonas fluorescens and Pseudomonas aeruginosa were isolated from the reactors coupling nitrogen removal from wastewater and hydrogen sulfide removal from biogas. It was investigated that sulfide to nitrate ratios had effects on the simultaneous removal of sulfide and nitrate of the two strains under the conditions of pH 7.0, temperature 30 degrees C, anaerobic, cultured for 2 days. The results showed that the nitrate-nitrogen removal rate of Pseudomonas aeruginosa was higher than that of Pseudomonas fluorescens under the same conditions. The sulfide-sulfur removal rates of the two strains had little difference. The best molar n(S)/n(N) of sulfide and nitrate removal rates of Pseudomonas fluorescens and Pseudomonas aeruginosa were 5/2-5/3, 5/3-5/4, respectively. Pseudomonas fluorescens could transform NO3- -N into NO2-N fast, its principal NOx- -N not removed was NO2- -N, especially at the low initial concentration of NOx- -N. The NOx- -N not removed was NO3- -N by Pseudomonas aeruginosa. The best molar n(S)/n(N) of sulfur as reaction outcome of sulfide-sulfur were 5/4, 5/3 by Pseudomonas fluorescens and Pseudomonas aeruginosa, respectively.
Keywords:sulfide to nitrate ratios  microbial strain  swine wastewater  removal of nitrogen  biogas  removal of hydrogen sulfide
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