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城市河流底泥耗氧速率的测定及应用研究
DETERMINATION AND APPLICATION OF SEDIMENT OXYGEN DEMAND IN URBAN RIVERS
【摘要】 本文通过对底泥耗氧影响因素的研究,拟定了底泥耗氧速率(SOD)的测定法。对苏州河上海市区各断面底泥进行测定,其SOD为2.0—2.3g/m~2.d,相对标准偏差为5%.根据SOD与水温、水流流速等主要环境因素的关系,推导出城市河流底泥耗氧过程的数学摸式.
【Abstract】 The various factors affecting the sediment oxygen demand(SOD) were investigated with the object of developing a method for determining SOD in urban rivers. Sediment samples were collected from different reaches of the Suzhou River in Shanghai and measured for their SOD’s. The SOD’s were found to be 2.0 to 2.3g/m2.d, with a relative standard deviation of 5%. On the basis of the study of the relationship of SOD to some main environmental factors such as temperature and velocity, a mathematical model of SOD process in urban rivers was proposed.
- 【文献出处】 环境化学 ,Environmental Chemistry , 编辑部邮箱 ,1989年02期
- 【被引频次】25
- 【下载频次】285