Laboratory Simulation to Remove Petroleum Pollutant in Groundwater by Using Air Sparging

Based on the stratigraphic configuration of the oil-contaminated sites in Northeast China,the efficient and best experimental conditions to remove oil pollutants in a relatively heterogeneous aquifer using air sparging were investigated.The results show that for Complex formation,the remediation of AS technology is efficient.It was shown that when air flow rate was 300ml/min,the removal rate of benzene,naphthalene were 99.54% and 11.58%,respectively.When the medium was layered heterogeneous porous media,the removal rate of continuous air sparging is superior to intermittent air sparging.In the whole experiment,the removal efficiency of naphthalene was very low which may be own to its structure and properties and the heterogeneous of the medium.When the Semi-volatile contaminants exist,considering the use of other combined remediation technique was necessary.