德州市深层地下水水质演化研究  

Deep Groundwater Water Quality Evolution in Dezhou City

作　　者：赵全升[1] 冯娟[2] 安乐生[1] 

机构地区：[1]青岛大学环境科学系,山东青岛266071 [2]中国海洋大学环境科学与工程学院,山东青岛266100

出　　处：《地理科学》2009年第5期766-772,共7页Scientia Geographica Sinica

基　　金：国家自然科学基金(40772151);山东省自然科学基金(Y2006E03);青岛市科技发展计划项目(07-2-3-16-jch)

摘　　要：德州市属于典型的黄河下游冲积平原孔隙水水文地质区,这一地区地下淡水的天然水环境条件非常敏感和脆弱。由于持续开采地下水,使该区域地下水的水动力场和水化学场发生了较大变化。根据德州市地下水水质监测数据,本文论述了深层地下水的水质特征,分析研究了深层地下水的水质演化。结果表明:在开采条件和自然条件的共同作用下,HCO3-和Na+浓度呈现出持续升高趋势,矿化度、总硬度及其它主要水质指标的浓度变化较小。深层地下水水质演化的特点表现为水化学动态并不随季节变化,而是在开采条件下,随着深层地下水系统压力、氧化?还原环境条件的改变有所变化。地下水水质指标浓度的历年变化主要受到水文地球化学环境的影响。针对研究区地下水水质的演化趋势,提出了应进行深层地下水人工回灌和降氟改水的水质改善措施。Dezhou City is in a typical alluvial plain pore water hydrogeology area in Yellow River downstream, where the natural aquatic environment condition of underground fresh water is rather sensitive and fragile. The continuous exploitation of the groundwater brings great changes in the hydrodynamic force field and hydrochemical field in this area. Based on the monitoring data of groundwater quality in Dezhou City, the paper discusses water quality characteristic and analyzes the water quality evolution of deep groundwater. Results indicate that under the combined effects of exploitation and natural condition, the concentration of HCO3^- and Na^＋ takes on a steady increase while the degree of mineralization, total hardness and the concentration of other major water qual- ity index change little. The character of deep groundwater evolution is as follows ： the hydrochemical regime does not alter with season, but does with the change of pressure and oxidation reduction of deep groundwater system The change of groundwater quality index in calendar years was mainly influenced by hydro geochemistry environment. The paper also puts forward some improvement measures of artificial groundwater recharge and reducing fluorin and improving drinking water on the basis of the evolution tendency of groundwater quality in study area.

关 键 词：黄河下游冲积平原 德州市 深层地下水 水质演化 

分 类 号：P641[天文地球—地质矿产勘探]