火山渣净化石油类污染地下水过程中与水化学因子的响应关系分析

Response Relationship Analysis of Hydro-Chemical Factor during Cleanse Process of Scoria for Petroleum Hydrocarbons in Groundwater

采用生态安全型火山渣净化石油类污染地下水,考察该过程中与水化学因子（Fe^2＋,Fe^3＋,Mn^2＋,SO4^2-,NH4^＋,Ca^2＋,Mg^2＋,NO3^-,NO2^-等）间的响应关系.结果表明：在火山渣吸附水体总石油烃（TPH）过程中,与Mn^2＋,SO4^2-,Ca^2＋,NH4^＋的质量浓度无关,与Fe^2＋,Fe^3＋,Mg^2＋,NO2^-的质量浓度呈负相关,与NO3^-的质量浓度呈正相关;对Ca^2＋的去除率为42%-56%,对SO4^2-,Mg^2＋,NH4^＋的去除率为60%-80%,对Fe^2＋,NO3^-的去除率大于80%,对Fe^3＋,Mn^2＋,NO2^-的去除率均大于95%.

Abundant,economic and eco-safe scoria was used to decontaminate groundwater contaminated by petroleum.This essay shows the response relationship between its decontamination process and hydrochemistry factors.The main investigation hydro-chemical factors included Fe^2＋,Fe^3＋,Mn^2＋,SO4^2-,NH4^＋,Ca^2＋,Mg^2＋,NO3^-,NO2^-and so on.The results show that scoria adsorb petroleum hydrocarbons（total petroleum hydrocarbon,TPH）in the water：it is not affected by Mn^2＋,SO2-4,Ca^2＋,NH4^＋,but affected by Fe^2＋,Fe^3＋,Mg^2＋,NO2^-,NO3^-.The Fe^2＋,Fe^3＋,Mg^2＋and NO2^-have the inhibition effect on the adsorption of the scoria for TPH,while NO-3has the promotion effect on the adsorption of the scoria for TPH.In the purification process of scoria for TPH,it can simultaneously remove all the ions.The removal rate of Ca^2＋is between 42% to 56%,those of SO4^2-,Mg^2＋,NH4^＋are between 60% to 80%,while those of Fe^2＋,NO3^-are greater than 80%,and Fe^3＋,Mn^2＋,NO2^-are almost completely removed and the removed rates are more than 95%.