摘要
目的:1)掌握柴窝堡湖近几年工业、民用、农业等污染源的分布和污染物排放情况。2)针对重要污染物为柴窝堡湖污染治理和环境综合整治提供对策建议。方法:通过收集整理2005-2009年柴窝堡湖水质监测数据,根据《地表水环境质量标准》,采用单因子指数评价法、综合污染指数评价方法、综合营养状态指数法、趋势分析法对柴窝堡湖水质进行了评价和分析。结果:1)根据单因子指数评价法,2005年至2009年柴窝堡湖均为劣五类水质。2)柴窝堡湖五年间的主要污染物有:化学需氧量、硫化物、氯化物、总磷。化学需氧量的秩相关系数为0.9,表明该污染物浓度变化趋势有显著意义,变化显著上升。硫化物的秩相关系数为0.9,表明该污染物浓度变化趋势有显著意义,变化显著上升。氯化物的秩相关系数为0.7,表明该污染物浓度无显著变化趋势。总磷秩相关系数为0.9,表明该污染物浓度变化趋势有显著意义,变化显著上升。3)五年间柴窝堡湖的污染综合指数在1.66-2.07间,柴窝堡湖水环境质量为五级重度污染水质。4)通过综合营养状态指数法和分级原则,柴窝堡湖为中度富营养化湖泊。5)从平水期、丰水期比较柴窝堡湖水质,丰水期水质好于平水期水质。结论:1)2005年至2009年柴窝堡湖首要污染物为化学需氧量、硫酸盐、氯化物、总磷。2)柴窝堡湖富营氧化水平2005年至2009年呈逐年上升的趋势,不能满足渔业养殖水域功能区的水质要求。3)柴窝堡湖主要污染物浓度值丰水期低于平水期。4)加强对柴窝堡湖周边污染企业排污的监管力度;加强水资源宏观调控,补给柴窝堡湖,通过调整用水结构提高水资源利用的效率和效益。
This issue aims at two sides.One is to grasp in recent years the distribution and emission of pollution sources in the industry,civil industry and agriculture.The other is,according to the main pollutants,to give advice on pollution control and environmental comprehensive improvement of Chaiwopu Lake.The method is that by means of gathering water quality monitoring data of Chaiwopu Lake from 2005 to 2009,in addition,on the basis of environmental quality standards for surface water,adopting single factor index evaluation method,comprehensive index evaluation method,comprehensive nutrition state index evaluation and trend analysis method is to assess and analyze water quality of Chaiwopu Lake.There are five results of this issue.Firstly,according to single factor index evaluation method between 2005 and 2009,water quality of Chaiwopu Lake was all inferior five kinds.Secondly,in five years key pollutants were chemical oxygen demand,sulfide,nitride and total phosphorus.Rank correlation coefficient of chemical oxygen demand was 0.9,it indicated concentration change trend of this pollutant was markedly significant,that's to say,change was to rise significantly.Rank correlation coefficient of sulfide was also 0.9,it showed what Rank correlation coefficient of chemical oxygen demand showed.Rank correlation coefficient of nitride was 0.7,displaying concentration change trend of this pollutant wasn't to be dramatically important.Compared with nitride,rank correlation coefficient of total phosphorus was 0.9,it indicated concentration change trend of this pollutant was markedly significant,and change was to rise significantly.Thirdly,during the five years,comprehensive pollution index of Chaiwopu Lake was between 1.66 and 2.07,so water environmental quality of Chaiwopu Lake was five serious pollution.Fourthly,on the basis of comprehensive nutrition state index method and classification principle,Chaiwopu Lake was moderate eutrophic lake.Finally,making comparisons between medium season and abundant season,water quality of the
出处
《环境与发展》
2011年第10期97-103,共7页
Environment & Development
关键词
柴窝堡湖
水质评价
水污染
防治对策
Chaiwopu Lake
water quality evaluation
water pollution
countermeasure
