摘要
被碱活化后的过硫酸钠,可以加快污染物氧化降解效率,对多环芳烃具有较好的去除效果。本实验使用控制变量法把生石灰的添加量及反应时间设置为固定值3%和5天,从而研究在碱活化的情况下,添加不同比例的过硫酸钠对多环芳烃的降解率。添加1.5%的过硫酸钠能达到相应标准限值,对PAHs的去除率随着过硫酸钠比例的增加而增加,在添加3%过硫酸钠时,去除率趋于稳定。对于不同浓度PAHs添加相同比例过硫酸钠的污染土壤,浓度越高的PAHs,去除效果也越好。
After being activated by alkali,sodium persulfate can accelerate the degradation efficiency of pollutants and has a better removal effect on PAHs.In this experiment,the control variable method was used to set the addition amount and reaction time of quicklime to fixed values of 3%and 5 days,so as to study the degradation rate of PAHs by adding different proportions of sodium persulfate under the condition of alkali activation.Adding 1.5%sodium persulfate can reach the corresponding standard limit,and the removal rate of PAHs increased with the increase of the proportion of sodium persulfate.When adding 3%sodium persulfate,the removal rate tended to be stable.The higher the concentration of PAHs,the better the removal effect.
作者
阳杰
杜保森
YANG Jie;DU Bao-sen(Shanghai Xingdong Environmental Sci-tech Co.,Ltd.,Shanghai 200042;Shanghai Academy of Environmental Sciences,Shanghai 200042,China)
出处
《广州化工》
CAS
2020年第14期88-90,共3页
GuangZhou Chemical Industry
关键词
活化
过硫酸钠
多环芳烃
土壤修复
activation
sodium persulfate
polycyclic aromatic hydrocarbons
soil remediation
