污染控制技术及原理
贡俊,张肇铭.脱氮硫杆菌氧化硫化氢过程中的生物氧化和化学氧化[J].环境科学学报,2006,26(3):477-482
脱氮硫杆菌氧化硫化氢过程中的生物氧化和化学氧化
- Biological and chemical oxidation during oxidation of hydrogen sulfide by Thiobacillus denitrificans
- 基金项目：国家科技攻关计划项目(No.2001BA540C);山西省高校科技研发项目(No.2003013)
- 作者
- 单位
- 贡俊
- 1. 山西大学生命科学与技术学院, 太原 030006; 2. 山西财经大学环境经济系, 太原 030006
- 张肇铭
- 山西大学生命科学与技术学院, 太原 030006
- 摘要：在好氧反应器中研究了不同条件下H2S生物氧化和化学氧化之间的关系.结果表明,在pH为6～8、温度为25～35℃和溶解氧浓度为10.5mg·L-1时,当硫化氢进气摩尔流速稳定在2.1mmol·L-1·h-1时,脱氮硫杆菌(Thiobacillus denitrificans)氧化硫化氢的生物氧化速率可达到1.9mmol·L-1·h-1以上,此时硫化物在液相的累积摩尔速率和H
- Abstract：The relation between biological and chemical oxidation of H2S was studied under different conditions in the aerobic reactor. When the inlet H2S molar rate was 2.1 mmol·L-1·h-1, the results suggested that the biological oxidation rate of Thiobacillus denitrificans could achieve over 1.9 mmol·L-1·h-1 and the sulfide accumulation molar rate in the liquid and H2S outlet molar rate were very low in a pH range from 6 to 8, temperature from 25～35℃ and dissolved oxygen concentration 10.5 mg·L-1. The chemical oxidation rate increased as the increase of pH value, temperature and dissolved oxygen concentration and could be up to 0.33 mmol·L-1·h-1 to 0.45 mmol·L-1·h-1. Chemical oxidation rate represents about 8.6%～19.1% of the total oxidation rate at the optimal conditions for bacteria growth and increased to 29%～43.7% as the decrease of pH value and temperature.
摘要点击次数： 1917 全文下载次数： 5217
