摘要
采用平皿夹层厌氧法,从糖蜜酒精废水处理反应器中分离到一株高效硫酸盐还原菌(Sulfate Reducing Bacteria,SRB,命名为SRB-22)。在三角瓶中对其进行脱硫性能研究。实验结果表明,当SRB-22较佳的SO4^2-去除pH值范围为7~9时,去除温度范围为30~35℃;随着初始SO4^2-浓度的加大,SRB-22对SO4^2-的去除率降低,降解时间延长。当COD/SO4^2-比值在2.4以上时,SRB-22对SO4^2-盐的去除率在第5天可以达到90%;Fe^2+在一定浓度范围内可以提高硫酸盐的去除率。
A highly-efficient sulfate-reducing bacteria (SRB) was isolated from a molasses alcohol wastewater anaerobic treatment reactor in Guangxi, named SRB-22. The physiological and biochemical study were carried out in the flask with SRB-22. The experimental results showed that the optimum conditions for SRB-22 removal rate of SO4^2- appeared to be at pH 7 - 9, 30- 35 ℃ ; the sulfate removal rate was raised with the increase of SO4^2- concentration; COD/SO4^2- ratio was about 2.4. After cultivation 5 days, the removal rate of SO4^2- could be 90% ; In a certain range of Fe^2+ concentration, it could increase the removal rate of SO4^2-.
出处
《桂林电子科技大学学报》
2009年第5期414-417,共4页
Journal of Guilin University of Electronic Technology
基金
国家大学生创新实验计划项目(08105912)
桂林市科技局基金项目(20060218)
关键词
硫酸盐还原菌
菌株分离
脱硫特性
sulfate-reducing bacteria
strains isolated
desulfurization characteristics