摘要
为脱除废水中高浓度的硫氮,首先对脱氮硫杆菌(Thiobacillus denitrificans)的生长曲线和驯化期间营养液pH的变化进行了测定,确定了脱氮硫杆菌合适的使用条件.然后检测了接菌后废水中的S2-浓度控制在400 mg/L时合适的硫氮比以及脱氮硫杆菌对NO3-的去除率.结果表明,处理富含硫氮的废水时,当硫氮比控制在5:3、S2-浓度控制在400mg/L时,脱氮硫杆菌对NO3-的去除率可达63.19%,同时S2-转化成硫酸盐或可回收的单质硫,使废水的硫氮污染得到了有效的控制.
The growth curve of Thiobacillus denitrificans and pH of the culture media during the domestication process were determined to make sure the optimum condition for the removal of nitrate and sulfide in highly-concentrated wastewater. Then the ratio of sulfide to nitrate and the removing rate of NOr were also examined in this paper. The results showed that when the S2 concentration in wastewater was 400 mg/L and the ratio of sulfide to nitrate was 5：3, the removing rate of NO3 could reach 63.19%, and S2- could simultaneously be converted into sulfate or elementary sulfur. These results indicated that Thiobacillus denitrifieans had application potential in pollution control for nitrate and sulfide in wastewater. Fig 6, Tab 1, Ref 16
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2013年第1期175-178,共4页
Chinese Journal of Applied and Environmental Biology
基金
山西省科技攻关项目(20100311069)资助~~
关键词
脱氮硫杆菌
硝酸盐
硫氮废水
去除率
Thiobacillus denitrificans
nitrate
wastewater containing nitrate and sulfide
removing rate
