摘要
于平水期和丰水期同点位采集官厅水库、密云水库上游流域的地表水样品共计222件,分别测试了原水、悬浮物中TN、NH 3-N、NO-3-N和TP的含量,探讨氮、磷的分布规律及污染特征,并参照GB 3838—2002《地表水环境质量标准》进行评价。结果表明:1)研究区地表水处于富营养化状态,永定河水系氮、磷含量相对较高,高值点主要分布在洋河干流断面。2)主要河流的干流氮、磷高值点的出现均与上游的城市废水排放密切相关,应加大城市废水的治理力度,提高排污标准。3)TN 78.26%(丰水期)、91.59%(平水期)的样品劣于Ⅲ类,除洋河上流、桑干河上流和汤河水系外,其他水系大部分样点TN仅达劣Ⅴ类要求,但NO-3-N和NH 3-N大部分样品符合标准限制,建议制定标准时应加强对NO-3-N的管控。4)TN 33.04%(丰水期)、14.02%(平水期)的样品不符合Ⅲ类要求,主要分布在洋河中段、壶流河和潮河中段水域。
A total of 222 surface water samples from the upstream water system of Guanting Reservoir and Miyun Reservoir were collected at the same point in both plain and the abundant water periods.The contents of total nitrogen,ammonia nitrogen,nitrate and total phosphorus in raw water and the suspended solids were measured respectively.The distribution and pollution characteristics of nitrogen and phosphorus were discussed and evaluated with reference to the environmental quality standard of surface water(GB 3838—2002).The results showed that:1)the surface water in the study area was in eutrophication state,the nitrogen and phosphorus content in Yongding River system was relatively higher,and the high value points were mainly distributed in the cross section of the main stream of the Yanghe River;2)the appearance of the high value point of nitrogen and phosphorus in the main stream of the main river was closely related to the discharge of urban wastewater in the upper reaches of the river,and the treatment of urban wastewater should be strengthened;3)the samples of 78.26%total nitrogen(in abundont water period)and 91.59%(in plain water period)were inferior to classⅢ.Except for the upper reaches of the Yanghe River,the upper reaches of the Sanggan River and the Tang River systems,the total nitrogen in most of the sample sites of the other water systems was inferior to classⅤ.However,most of the samples of nitrate and ammonia nitrogen were defined to meet the standard limit,so it was suggested that the control of nitrate should be strengthened when setting the standard;4)the samples of total phosphorus 33.04%(in abundant water period)and 14.02%(in plain water period)didn’t meet the requirements of categoryⅢ,and mainly distributed in the middle section of the Yanghe River,Huliu River and the middle section of the tidal river waters.According to the present situation of surface water environmental quality,some suggestions for future work were put forward.
作者
魏静
郑小刚
张国维
张延夕
王彩玲
王苒
WEI Jing;ZHENG Xiao-gang;ZHANG Guo-wei;ZHANG Yan-xi;WANG Cai-ling;WANG Ran(Hebei Institute of Geological Survey,Shijiazhuang 050081,China;Center for Agricultural Resources Research,Institute of Genetics and Developmental Biology,Chinese Academy of Sciences,Shijiazhuang 050022,China;University of Chinese Academy of Sciences,Beijing 100049,China;Land Consolidation and Rehabilitation Center of Hebei Province,Shijiazhuang 050051,China)
出处
《环境工程》
CAS
CSCD
北大核心
2020年第9期101-105,144,共6页
Environmental Engineering
基金
河北省财政厅(冀财预复〔2016〕826号)资助。
关键词
地表水
氮磷含量
官厅水库上游流域
密云水库上游流域
surface water
nitrogen and phosphorus content
the upstream basin of Guanting Reservoir
the upstream basin of Miyun Reservoir
