基于数据挖掘卤代烃污染的地下水化学特征

摘要

With rapid development of the chemical industry, more and more halogenated hydrocarbon get into the ground-water environment, taking complex interaction with the native ions. Through the latest investigation, a wealth of data of groundwater pollution was obtained. This study applied the latest investigation data of groundwater contaminations, conjointly analyzed inorganic indicators and halogenated hydrocarbon, case in dichloromethane, in groundwater. According to the analy-sis on the impact of dichloromethane on the hydrochemistry of groundwater, the study explored interactions between inorganic i-ons and dichloromethane in groundwater, found that the Mg2+and SO4 2- are decreased, contrasted with Cl-, in groundwater with dichloromethane. The difference of hydrochemistry, between halogenated hydrocarbons contaminated groundwater and un-contaminated, was discussed, from the quantitative relation. An integrated research idea of halogenated hydrocarbon contami-nation was presented.%化学工业的蓬勃发展，卤代烃越来越成为日常工业生产中不可或缺的原料或者辅助，且不可避免的会进入地下水环境，因此，需要对其在地下水中的运移及影响进行研究。以国家前期工作中取得的地下水污染调查的数据成果为载体，联合分析地下水中卤代烃与各项无机指标，以卤代烃中的二氯甲烷为例，对已取得的数据进行挖掘分析，初步分析二氯甲烷对地下水水化学产生的影响，进而探讨地下水中无机离子与二氯甲烷交互作用关系，发现二氯甲烷存在的地下水中Mg2+以及SO42-相对Cl-离子有所减少。从数量关系上探讨卤代烃污染的地下水与未受其污染的地下水的水化学差异，对卤代烃污染的识别提出一种综合研究思路。