【摘要】 为保障城市居民的饮用水安全,在南水北调中线工程通水之前,对丹江口水库水质进行了连续3年的监测分析。检测数据显示,从2011年12月到2014年11月,丹江口水库水体的水温在6~27℃之间波动,浊度在高浊期数值大于5 NTU,低浊期数值小于2 NTU,依据《地表水环境质量标准》(GB 3838—2002),丹江口水库水体溶解氧含量属于Ⅰ类水体,高锰酸盐指数在高浊期属于Ⅱ类水体,低浊期属于Ⅰ类水体,总磷浓度介于Ⅱ类~Ⅲ类水体,氨氮含量属于Ⅰ类水体,总氮含量介于Ⅲ类~Ⅴ类水体之间,硫酸根和氯离子大大低于《地表水环境质量标准》(GB 3838—2002)限值。更多还原

【Abstract】 To ensure the safety of urban resident drinking water,Danjiangkou Reservoir water quality was monitored and analyzed for a successive three year period before completion of the middle route of the South-to-North Water Diversion Project. The results showed that water temperature in the reservoir fluctuated between 6 ℃ and 27 ℃ from December 2011 to November 2014. In high turbidity period and low turbidity period,turbidity was more than 5 NTU and less than 2 NTU,respectively.According to Environmental Quality Standards for Surface Water( GB 3838- 2002),dissolved oxygen of Danjiangkou Reservoir belonged to national standard grade one level. In high turbidity period and low turbidity period,permanganate index belonged to national standard grade two level and national standard grade one level,respectively. Total phosphorus was between national standard grade two level and national standard grade three level,ammonia nitrogen belonged to national standard grade one level,total nitrogen was between national standard grade three level and national standard grade five level. The concentrations of sulfate and chloride ion were much less than the limited values defined in Environmental Quality Standards for Surface Water( GB 3838- 2002),respectively.更多还原