摘要
文章基于硫自养反硝化处理模拟硝酸盐污染地下水,探究金属元素Fe^(2+)和Cu^(2+)添加量对体系反硝化效果的影响。结果表明:添加0.10%、0.20%Fe^(2+)或0.05%Cu^(2+)对硝酸盐去除效果以及脱氮速率有较明显的促进作用。反应进行216 h后,硝酸盐去除率稳定保持在97%以上,最高达到99%。研究发现金属离子的适量添加可以有效降低体系硫酸根的积累量。在整个反应期中,合成材料为反硝化系统提供了充足的碱度,保障了反硝化的有效进行。
This paper uses sulfur autotrophic denitrification to treat nitrate-polluted underground water so as to explore the impacts of Cu^2+and Fe^2+ion addition on denitrification. Addition of Fe^2+ions at 0. 10% and 0. 20% or Cu^2+ion at 0. 05% can effectively remove the nitrate and promote the denitrification rate. After 216 hours in reaction,nitrate removal rate reaches at 97%,up to 99%. Appropriate addition of metal ions may significantly reduce the accumulation of sulfates. In the entire reaction,composite material provides sufficient alkalinity for denitrification system,which guarantees the efficiency of denitrification reaction.
作者
张舒齐
冯传平
梁晶
邓阳
彭晗君
韩影
ZHANG Shuqi;FENG Chuanping;LIANG Jing;DENG Yang;PENG Hanjun;HAN Ying(School of Water Resource and Environment,China University of Geoseienees,Beijing 100083,China)
出处
《资源与产业》
2018年第3期64-69,共6页
Resources & Industries
关键词
铜铁离子
生物强化
硫自养反硝化
地下水
脱氮
CH^2+ and Fe^2+ ions
biofortification
sulfur autotrophie denitrification
underground water
denitrification