四川省茶坪河水环境容量及总量控制  

Water environmental capacity and total water pollution quantity control of Chaping River, Sichuan Province

作　　者：戴本林[1] 杨立中[1] 贺玉龙[1] 许文来[1] 

机构地区：[1]西南交通大学环境科学与工程学院,成都610031

出　　处：《湖泊科学》2008年第1期39-44,共6页Journal of Lake Sciences

基　　金：四川省科技研究开发项目(01SG047-02);铁道部科技研究开发计划项目(2005Z003)联合资助.

摘　　要：以流经四川绵阳市安县河流茶坪河为研究对象,在对该河流水污染负荷、水环境现状及水环境功能充分调查的基础上,结合该河流的水文特征和排水规划以及四川省绵阳市环境监测站2005年实测的数据,采用二维浅水水动力学—水质模型方程组对茶坪河的各监测断面CODCr和NH3-N的浓度场进行了计算模拟和对比,并用一维水环境容量计算模型计算了该河流的水环境容量,提出了具体的总量控制措施.结果表明:用二维浅水水动力学—水质模型方程组计算各监测断面的CODCr和NH3-N与实测值相差不大;茶坪河水环境容量CODCr为123.96t/a,NH3-N为42.95t/a,所排放的CODCr量、NH3-N量已经超过该流域容量,出水水质已超过水质保护目标Ⅲ类标准.The object of research is Chaping River which flows over Anxian County in Mianyang City, Sichuan Province. Based on a great number of investigations on the load of water pollutants, the situation and function of water environment of the river, the river-basin hydrological character, the river draining plan, and observation date at environmental monitoring station of Mianyang City Sichuan Province in 2005, two-dimensional hydrodynamic shallow-water model equations were used for monitoring COD and NH3-N concentrations in section of the Chaping River and the simulations were compared. A one-dimensional model was used to calculate the water volume capacity of the river＇s water environments and the ways controlling the total quantity were provided. Results indicated that using two-dimensional hydrodynamic shallow-water model equations to calculate the monitoring section showed a small measured difference for COD and NH3-N. For the water environmental capacity of Chaping River, COD was 123.96 t/a and NH3-N 42.95 t/a. The COD and NH3-N emission volume would exceed the capacity in the basin, and the quality of output water would exceed the Ⅲ grades of water protecting standards.

关 键 词：水环境容量 总量控制 二维模型 污染负荷 茶坪河 

分 类 号：X26[环境科学与工程—环境科学]