LDC法在水污染控制中的应用研究  

Application study on LDC for water pollution control

作　　者：陈奕[1] 张新华[1] 李红霞[1] 罗吉忠[1] 赵少华[1] 

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065

出　　处：《西南民族大学学报（自然科学版）》2011年第5期822-826,共5页Journal of Southwest Minzu University(Natural Science Edition)

基　　金：国家科技重大水专项(2008ZX07526-004-T007;2009ZX07212-002-003;2009ZX07104-001);四川大学青年教师科研启动基金(2009SCU11079);四川大学水力学与山区河流开发保护重点实验室小团队研究基金

摘　　要：如何充分利用流域径流的季节特征,实现容量总量在流域内各控制单元内的动态管理是水资源、水环境、水生态保护和区域经济社会可持续发展面临的重点挑战.负荷历时曲线(LDC)可以充分利用流域内控制单元的径流季节性变化特点,针对流域水质监测资料结合控制单元的水质目标实现水环境问题诊断和水污染控制(点源和非点源).本文以袁河新余段为例,将LDC法和水功能区划相结合,将LDC法应用到河段控制单元,对河段污染情况进行细致分析,判断污染物的超标以及削减情况.结果表明LDC包含众多水质特征信息,可以在较少数据信息条件下,合理分析各类水环境问题,从而为流域水环境管理提供可靠决策依据.It is still a great challenge to dynamically manage the total loads of pollutants in control units within a watershed so that the regional economic developments and the protections of water resources,aquatic environments and ecosystems can be made balance well naturally.Load duration curve（LDC） method,however,can fully consider about the seasonal variation of the runoff in each control unit.With the aid of LDC established on the basis of observed data of runoff,water quality and water quality standards,aquatic environmental problems can be evaluated and the pollutant control decisions on the non-point sources and point sources can be made.A case study Is carried out in the Xinyu reach of Yuanhe River,a branch of Ganjiang River,which is a tributary of Yangtze River.The surplus conditions and quantities of pollutants should be reduced,and discharging into each control unit is estimated reasonably based on the water quality requirements in different water function zones of the studied reach.Results indicate that LDC method can be employed to ascertain aquatic environmental problems and provide reliable basis for a decision making on the pollutant control within a watershed.

关 键 词：负荷历史曲线 水环境 污染防治 控制单元 

分 类 号：X52[环境科学与工程—环境工程]