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中国流域水污染现状与控制策略的探讨   总被引:35,自引:0,他引:35       下载免费PDF全文
本文简要介绍中国各流域水环境质量现状,分析当前各流域经济发展与水环境保护的关系,探讨流域水污染防治与水环境综合管理的主要问题,提出流域水污染控制的策略与原则。  相似文献
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辽河流域水质现状评价及其污染源解析   总被引:9,自引:0,他引:9  
根据辽河流域水系特征选取COD,BOD5,NH3-N等6个典型水质指标,以综合水质标识指数评价法对辽河流域主要干流水质进行评价。以此为基础,结合多元统计分析方法对辽河流域主要干流水体中主要污染物进行源解析。结果表明,辽河流域中、下游水体中度污染比较严重,辽河流域水体有3种典型污染物,对整个辽河流域污染的贡献率分别为56.85%,18.23%和17.51%。  相似文献
3.
淮河流域水质参数相关性研究   总被引:6,自引:1,他引:5  
贾利 《水资源保护》2001,(2):48-49,52
根据河流水系及重点河段纳污的特点,将流域划分为不同区域,进而对CODcr,CODMn,NH3-N三者两两间的线性相关关系进行了系统研究,并检验了CODCr与CODMn,CODCr与NH3-N,CODMn与NH3-N回归方程的精度。  相似文献
4.
The Urema River basin is the major sub catchment of the Pungue River basin situated in Central Mozambique. The Urema River basin controls the ecosystem of the Lake Urema, which with its extended flood plains forms a major feature of the Gorongosa National Park. The Urema River influences the flood and low water levels of the Pungue River, which is the main source of potable water of Beira – the second largest city of Mozambique. The area of the Urema river basin is densely populated and intensively used for subsistence agriculture, timber production, widely spread gold mining, tourism and nature conservation. A university project aiming at developing a model of the groundwater dynamics and assessing groundwater qualities of the Urema River basin was recently initiated. Up to now very few groundwater investigations were conducted in Mozambique. Current database management of groundwater data is poorly developed. Data are kept in tabular formats and serve mainly for record keeping purposes. Confronted with these challenges the presentation demonstrates the project's approaches of linking the various database sources to achieve a large to medium scale concept of the hydrodynamics of the Urema River basin. Based on current project findings the improvement of the resolution of digital data from current small to larger scales is necessary to enhance information contents. Further geochronological investigations are required to understand the geological evolution of the area and to update the stratigraphic order of geological formations. In future a groundwater-monitoring network needs to be established to capture long-term and baseline data.  相似文献
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以1998年为现状年,对《淮河流域水污染防治规划及“九五”计划》规定的82个监督监测断面的水质现状进行了综合评价,并与1994年水质状况进行了对比,反映了水质变化情况。将各站水质评价类别的水质浓度与规划目标进行及现状排污量与总量控制规划目标进行对比分析,反映河流水质和污染源治理相对应于《规划》目标的差距以及治理任务,讨论了实现目标应采取的措施。  相似文献
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根据西江流域水功能区2005—2015年11 a水质资料,评价西江流域水功能区水质现状,分析2005—2014年水质达标率,应用“季节性肯达尔检验法”对水功能区典型超标污染物的变化趋势进行分析。结果表明,西江流域水质现状总体良好,西江干流及贺江水质有好转趋势,新兴江、罗定江、绥江耗氧类有机物及氧平衡指标浓度呈上升趋势。  相似文献
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