分层型城市水源水库水质污染及成因分析  

Water Quality Pollution and Cause Analysis of Stratified Reservoir as Urban Water Source

作　　者：马越[1] 黄廷林[1] 谭盼[1] 章武首[1] 段婷婷[1] 汤建新[1] 

机构地区：[1]西安建筑科技大学西部建筑科技国家重点实验室培育基地,西安710055

出　　处：《价值工程》2011年第34期327-328,F0003,共3页Value Engineering

基　　金：国家自然科学基金重点项目(50830303);国家高技术研究发展计划(863计划)(2007AA06Z302)

摘　　要：以西安市主要的饮用水水源地—西安黑河水库作为主要研究对象,结合水库自然地理条件及水力变化特征,对当前黑河水库库区及上游河段代表性点位与断面进行了现场监测与取样分析,初步确定出导致当前黑河水库水质变化的主要原因是水库的内源污染。测定结果表明:水库上游河段各监测断面的氨氮、总氮、铁、锰等主要水质指标值均低于水库库区内同期的水质监测值;同时水库稳定的温度分层和水体/沉积物耗氧形成的底部强还原条件,导致了沉积物中污染物的大量释放;据此可见,外源污染是内源污染的前提条件,而内源污染则是目前造成分层型黑河水库水质污染的主导因素。It regards the Jin-Pen Reservoir of Heihe River as the main research object,which is the uppermost drinking water source area in the city of Xi＇an.In combination with the physiographic condition and hydraulic characteristics of the reservoir itself,the test and analysis are carried out on the water quality of the representative points in main reservoir area and upper basin,and accordingly the main reason of water quality change in Jin-Pen Reservoir is determined preliminarily to be the internal pollution sources.The analysis results show that the water quality indexes,such as ammonia nitrogen,total nitrogen,iron and manganese in upper reaches don＇t exceed the contemporaneous monitoring values in reservoir area,meanwhile the stable thermal stratification in Jin-Pen Reservoir and the strong reduction conditions resulted from oxygen consumption of water body and sediments lead to the contaminant release from bottom sediments.Therefore,the external pollution sources is considered to be the precondition of the internal pollution sources and the internal pollution sources is the leading factor which has caused the water pollution in Jin-Pen Reservoir at present.

关 键 词：水体富营养化 外源污染 水体分层 内源污染 

分 类 号：TE991.2[石油与天然气工程—石油机械设备]