研究报告
沈志红,张增强,王豫琪,王珍,陈园,魏素娜.生物反硝化去除地下水中硝酸盐的混合碳源研究[J].环境科学学报,2011,31(6):1263-1269
生物反硝化去除地下水中硝酸盐的混合碳源研究
- Biological denitrification for nitrate removal from groundwater using mixed carbon sources
- 基金项目：陕西省攻关项目 (No. 2010k01-01)
- 作者
- 单位
- 沈志红
- 西北农林科技大学生命学院, 杨凌 712100
- 张增强
- 西北农林科技大学理学院, 杨凌 712100
- 王豫琪
- 西北农林科技大学生命学院, 杨凌 712100
- 王珍
- 西北农林科技大学生命学院, 杨凌 712100
- 陈园
- 西北农林科技大学生命学院, 杨凌 712100
- 魏素娜
- 西北农林科技大学生命学院, 杨凌 712100
- 摘要：选取麦秸、锯末、乙醇为碳源, 比较了这3种物质单独或两两组合作为碳源的情况下, 生物反硝化去除模拟地下水中硝酸盐的效果. 结果表明, 以麦秸为碳源的反应体系具有较好的反硝化效果, 但反应器出水具有颜色和异味; 锯末+乙醇作为混合碳源的反应体系比单独添加锯末或乙醇反应体系的脱氮效果好; 碳氮比(C/N)为40的混合碳源用量有利于硝酸盐的去除; 添加0.5% (乙醇占总碳源量的百分比)的乙醇对以锯末为碳源的反应体系的硝酸盐去除具有显著的促进作用.
- Abstract：Wheat straw, sawdust and ethanol were selected as carbon sources for denitrification microorganisms to remediate nitrate from groundwater. The effect of wheat straw, sawdust, ethanol, wheat straw+ethanol, sawdust+ethanol as well as wheat straw+sawdust as carbon sources to remove nitrate from the simulated groundwater were compared. The results showed that the reactor packed with wheat straw had good nitrate removal efficiency, but the effluent from the reactor was colored and had a bad odor. The reactor packed with sawdust +ethanol had a better performance than the reactor packed with sawdust or ethanol alone. The ratio of carbon and nitrogen (C/N) 40 was beneficial to nitrate removal. When using sawdust as carbon source, 0.5% ethanol (the percentage of ethanol to the amount of carbon sources) had a significant effect on improving denitrification.
摘要点击次数： 2774 全文下载次数： 3642
