北京市典型城市河流(凉水河)沉积物耗氧污染特征  

Pollution characteristic of sediment oxygen demand in typical urban river(Liangshui River) of Beijing city,China

作　　者：李延 单保庆[2] 唐文忠[2] 陈静 

机构地区：[1]北京市凉水河管理处,北京100054 [2]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085

出　　处：《环境工程学报》2017年第9期5065-5070,共6页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07203-006);环境模拟与污染控制国家重点联合实验室专项经费(15L01ESPC)

摘　　要：针对北运河水系沉积物耗氧污染严重问题,选择凉水河上、中、下游作为研究对象,探讨了沉积物中NH+4-N、TOC、SOD的分布特征,初步判断了沉积物耗氧情况。结果表明凉水河表层沉积物中NH+4-N和TOC含量均较高。其中:NH+4-N在凉水河上游最高,均值为114.38 mg·kg,中游最低,均值为54.06 mg·kg-1;TOC在凉水河上、中、下游依次降低,均值分别为3.64%、3.36%和1.81%。凉水河表层沉积物SOD较高,且变化范围较大,沉积物耗氧污染较为严重。其中:凉水河中游SOD最高,均值为1.012 g·(m^2·d)-1;上游最低,均值为0.939 g·(m^2·d)-1。Based on oxygen demand pollution in the typical urban rivers of Beiyun River Basin,Liangshui River was selected for this study. The distribution characteristics of NH4^＋-N,TOC,and sediment oxygen demand（SOD） in the sediments from the upstream,middle and downstream of Liangshui River were investigated. The results showed that the contents of NH4^＋-N and TOC in the sediment samples were high. NH4^＋-N contents were higher in the upstream（mean value 114. 38 mg·kg^-1）,and lower in the midstream（mean value 54. 06 mg·kg^-1）. TOC contents were 3. 64%,3. 36% and 1. 81% in the upstream,middle and downstream of Liangshui River,respectively. SOD in the middle of Liangshui River was highest（mean value 1. 012 g·（m^2·d）^-1,and lowest in the upstream（mean value 0. 939 g·（m^2·d）^-1.

关 键 词：城市河流 沉积物 沉积物耗氧 溶解氧 

分 类 号：X703[环境科学与工程—环境工程]