摘要
以过硫酸钠/硫酸亚铁/柠檬酸(Na2S2O8/FeSO4/CA)化学氧化体系为处理方法,研究了不同药剂配比和氧化剂投加方式(一次性投加和序批式投加)对土壤中石油类污染物(TPH)降解效果的影响。结果表明,通过Fe^2+活化过硫酸钠氧化可以有效去除土壤中石油类污染物,当Na2S2O8/FeSO4/CA摩尔比为4∶1∶1时,TPH降解效果最好,降解率为53.90%;过硫酸钠一次性投加的TPH降解效率(49.34%)高于两次投加的TPH降解效率(20.81%)和三次投加的TPH降解效率(6.24%),表明一次性投加氧化剂对TPH的降解效果优于序批式投加的降解效果。
Sodium persulfate/ferrous sulfate/citric acid (Na 2S 2O 8/FeSO 4/CA) chemical oxidation system was used as treatment method,the effects of different drug ratios and oxidant dosages (one-time dosages and sequential batch dosages) on the degradation of petroleum pollutants (TPH) in soil were studied.The results showed that the oxidation of sodium persulfate by Fe ^2+ activation can effectively remove the petroleum pollutants in soil.When Na 2S 2O 8/FeSO 4/CA molar ratio was 4 ∶1 ∶1,the TPH degradation was most effective,the degradation rate was 53.90%.The TPH degradation efficiency (49.34%) of sodium persulfate was higher than that of two doses (20.81%) and three doses (6.24%).That showed the degradation effect of oxidant on TPH was better than that of sequential batch.
作者
丁丽
曾琪静
文方
陈勇
郭拉娣
DING Li;ZENG Qi-jing;WEN Fang;CHEN Yong;GUO La-di(Xinjiang Academy of Environmental Protection Science,Urumqi 830011,China;Xinjiang Key Laboratory for Environmental Pollution Monitoring and Risk Warning,Urumqi 830011,China;Xinjiang Engineering Technology Research Center for Cleaner Production,Urumqi 830011,China;College of Chemistry and Chemical Engineering,Xinjiang Normal University,Urumqi 830054,China)
出处
《应用化工》
CAS
CSCD
北大核心
2019年第7期1540-1542,1547,共4页
Applied Chemical Industry
基金
国家重点研发计划“政府间国际科技创新合作”重点专项(2016YFE0123800)
新疆维吾尔自治区科技支疆项目(2016E02102)
关键词
石油类污染物
过硫酸钠
药剂配比
投加方式
降解效果
petroleum pollutant
sodium persulfate
ratio of reagents
dosing method
degradating effect
