摘要
研究了利用固相好氧反硝化同步去除水中硝酸盐和阿特拉津的可行性。通过释碳性能的比较得出淀粉基颗粒是适宜的反硝化碳源,在间歇式实验中,初始硝态氮浓度为55~60 mg/L时,平均反硝化速率为7.03 mg/(L·h),能有效去除水中的硝酸盐。当水中阿特拉津浓度低于10 mg/L时,对好氧反硝化脱氮没有影响,浓度增加至20 mg/L,对反硝化有抑制作用。在好氧反硝化条件下,阿特拉津初始浓度分别为0.1,1 mg/L时,24 h后去除率分别为93%和94.8%,阿特拉津的去除主要通过吸附作用。
The feasibility of simultaneous removal of nitrate and atrazine from contaminated water using solid-phase aerobic denitrification was studied. The carbon releasing characteristics results indicated that the starch granules turned to be the most suitable carbon source. Volumetric denitrification rate was 7. 03 mg /( L·h) with the intial nitrate concentration of 55 ~ 60 mg / L under the batch experiments,which indicated that nitrate could be effectively removed. There was no effect on aerobic denitrification process with the atrazine concentration less than 10 mg / L,and the denitrification was repressed when atrazine concentration increased to 20 mg / L. When the initial concentration of atrazine was 0. 1 mg / L and 1 mg / L,the removal efficiency of atrazine was 93% and 94. 8% within 24 h under aerobic denitrification condition,respectively. Atrazine removal was mainly due to the absorption onto solid carbon source.
出处
《环境工程》
CAS
CSCD
北大核心
2015年第1期57-61,共5页
Environmental Engineering
基金
广东省科技厅科技计划项目(2012A010800006)
广东省自然科学基金重点项目(S2012020010887)
关键词
固态碳源
好氧反硝化
硝酸盐
阿特拉津
solid carbon source
aerobic denitrification
nitrate
atrazine
