污染控制技术及原理
周欲飞,赵国智,田光明,李文红,刘俊稚.一种新型异养自养集成工艺处理地下水硝酸盐试验[J].环境科学学报,2010,30(6):1170-1177
一种新型异养自养集成工艺处理地下水硝酸盐试验
- A novel approach combining heterotrophic with autotrophic denitrification for nitrate removal from groundwater
- 基金项目：省级以下机构资助项目
- 作者
- 单位
- 周欲飞
- 浙江大学 环境与资源学院, 杭州 310029
- 赵国智
- 浙江大学 环境与资源学院, 杭州 310029
- 田光明
- 浙江大学 环境与资源学院, 杭州 310029
- 李文红
- 浙江大学 环境与资源学院, 杭州 310029
- 刘俊稚
- 浙江大学 环境与资源学院, 杭州 310029
- 摘要：研究了一种利用电化学产氢自养反硝化(electrochemical hydrogen autotrophic denitrification)与固相异养反硝化(solid-phase eterotrophic denitrification)集成技术去除地下水中硝酸盐的方法.这种方法能够高效去除水中的硝酸盐且操作简单.试验结果表明,当进水NO3--N浓度为70mg·mL-1,电流强度控制在40mA,HRT为3.9h时,出水中NO3--N浓度为1.2mg·mL-1,硝态氮去除率达到98.3%,TN去除率达到95.6%,反应器中没有NO2--N积累,且pH值稳定在7.0～8.1之间.
- Abstract：Acombined process with solid-phase denitrification and electrochemical hydrogen autotrophic denitrification was studied.This process could be easily operated and had high nitrate removal efficiency.The results showed that,when the current was 40 mAand the HRT was 3.9 h,the NO3--N concentration in the effluent was decreased from 70 mg·L-1 to 1.2 mg·L-1.The NO3--N removal efficiency was up to 98.3%,and the TN removal efficiency was 95.6%.No accumulation of NO2--N in the reactor was found,and the pHof the effluent was stable between 7.0 and 8.1.
- Key words：heterotrophic denitrification autotrophic denitrification integrated process groundwater nitrate
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