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

摘要

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 Fe2 + , Fe3 + ,Mn2 + ,SO 2 -4 ,NH +4 ,Ca2 + ,Mg2 + ,NO -3 ,NO -2 and so on.The results show that scoria adsorb petroleum hydrocarbons (total petroleum hydrocarbon,TPH )in the water:it is not affected by Mn2 + ,SO 2 -4 ,Ca2 + ,NH +4 ,but affected by Fe2 + ,Fe3 + ,Mg2 + ,NO -2 ,NO -3 .The Fe2 + ,Fe3 + ,Mg2 + and NO -2 have the inhibition effect on the adsorption of the scoria for TPH,while NO -3 has 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 Ca2 + is between 42% to 56%,those of SO 2 -4 ,Mg2 + ,NH +4 are between 60% to 80%,while those of Fe2 + ,NO -3 are greater than 80%,and Fe3 + ,Mn2 + ,NO -2 are almost completely removed and the removed rates are more than 95%.%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(Fe2+,Fe3+,Mn2+,SO 2-4,NH +4,Ca2+,Mg2+,NO -3,NO -2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 Mn2+,SO 2-4,Ca2+,NH +4的质量浓度无关,与Fe2+,Fe3+,Mg2+,NO -2的质量浓度呈负相关,与 NO -3的质量浓度呈正相关；对 Ca2+的去除率为42%~56%,对 SO 2-4,Mg2+,NH +4的去除率为60%~80%,对 Fe2+,NO -3的去除率大于80%,对 Fe3+,Mn2+,NO -2的去除率均大于95%。