摘要
选用水处理中常用的陶粒、活性炭、草炭土等材料处理实际污染场地的石油类污染地下水,对去除地下水中石油污染物的效果进行对比分析。选取高效、经济且安全的草炭土作为PRB反应介质,分别考查Mn2+、Fe2+、Fe3+、NO-3、SO2-4等地下水水化学组分对净化效果的影响。结果表明一定浓度范围内,不同离子对净化效果的影响表现不同。NO-3含量对净化效果不影响;当SO2-4含量仅在200mg/L时降低了净化效果,在其他浓度时提升了净化效果;Mn2+、Fe2+随着浓度的升高,净化效果得到提高。最后对比观察草炭土吸附石油类污染物前后的显微形态,结果表明草炭土具有多孔结构,规则排列,吸附后草炭土的大部分孔隙已被石油类污染物所填充。以上研究为PRB技术在原位修复石油类污染地下水中的应用和推广提供了关键反应介质的信息。
Ceramisite,activated carbon,peat etc.were screened for remediation of petroleum contaminated groundwater.The effective,economical and safe peat was selected as the PRB reactive media to analyze the effects of hydrochemistry factors such as Mn2＋,Fe2＋,Fe3＋,NO-3,SO2-4on the purification efficiency.Experiments results indicated that every ion had different influence on purification efficiency.Purification efficiency had no effect with NO-3.It could be promoted by SO2-4except that the concentration of SO2-4was 200mg/L.It was promoted with the increment of the concentration of Mn2＋and Fe2＋.Finally,microstructure of peat before and after adsorption was compared.The results showed that peat had porous structure and regular arrangement.Petroleum hydrocarbons were found in the most pores of peat after adsorption.This research provided key reactive media for the application and promotion of PRB for the insitu remediation of petroleum contaminated groundwater.
出处
《中国矿业》
北大核心
2016年第7期67-71,共5页
China Mining Magazine
基金
河北省科技计划项目资助(编号:15273622)
