低影响开发模式下地下水质动态变化特征研究  

Study on Dynamic Change Characteristics of Groundwater Quality under Low Impact Development Mode

作　　者：刘婷婷 LIU Tingting(Cangzhou Water Conservancy Research Institute,Cangzhou 061000,China)

机构地区：[1]沧州市水利科学研究所,河北沧州061000

出　　处：《中国水能及电气化》2021年第3期49-53,26,共6页China Water Power & Electrification

摘　　要：文章以河北省沧州市为例,对低影响开发模式下的地下水质动态变化特征进行研究,探讨分析了pH值、总硬度、高锰酸盐指数、氨氮、硝酸盐、氟化物、氯化物、铁等八项指标的变化趋势,并利用F值评分法对研究区低影响开发模式前后的地下水水质进行了综合评价。结果表明:低影响开发模式下,能在一定程度上降低地下水总硬度、高锰酸钾指数、氨氮以及铁含量,但是也会使氟化物含量有一定程度的升高,并出现部分地区氟化物富集的现象;在低影响开发背景下,研究区地下水水质总体上有较为明显的改善,水质质量极差率从58.3%降至8.3%,水质质量较差率从33.3%降至16.7%,水质较好及良好率从8.7%升至75%。Cangzhou of Hebei Province is adopted as an example in the paper.The groundwater quality dynamic change characteristics under the low impact development mode are studied,and the change trends of eight indexes of pH value,total hardness,permanganate index,ammonia nitrogen,nitrate,fluoride,chloride and iron are discussed and analyzed.The method of the F-score method is utilized to comprehensively evaluate the groundwater quality in the research area before and after low impact development mode.The results show that the total hardness,potassium permanganate index,ammonia nitrogen and iron content of groundwater can be reduced to a certain extent under the low-impact development mode,but the fluoride content can also be increased to a certain extent,and fluoride enrichment phenomenon appears in some areas.The groundwater quality in the research area has been improved obviously on the whole under the background of low impact development,with the extremely poor rate of water quality decreased from 58.3% to 8.3%,the poor rate of water quality is decreased from 33.3% to 16.7%,and the good or excellent rate increased from 8.7% to 75%.

关 键 词：低影响开发 指标 地下水 水质 动态变化 F值评分法 

分 类 号：TV213[水利工程—水文学及水资源]