萍水河水质监测点的优化

摘要

城市内河流水质监测点位的优化,是全面掌握河流水质状况的关键.文章采用贴近度法对萍乡市萍水河2005-2015年水质及监测点位变化进行分析评价,并提出优化建议.根据萍水河水质污染特征,选择化学需氧量、五日生化需氧量、氨氮、总磷、总氮和高锰酸钾盐指数作为评价指标,结果表明:2005-2015年,萍水河水环境质量整体情况较好,但在2010年后呈下降趋势;监测点布设方案的调整有一定合理性,也有欠妥之处;对目前监测点位进行删减,得到了水质优化监测布点方案.%The optimization of monitoring spots for river inside the city is an important point to fully learn about the water quality situation of the river.Similarity method was used to evaluate water quality and optimize the monitoring spots in the Pingshui River,Pingxiang City,from 2005 to 2015.According to water pollution characteristics of the Pingshui River,COD,BOD,NH3-N, TP,TN and OC were chosen as the evaluation indicators.The results showed that the water quality generally was great,but had a certain drop since 2010.The adjustment of layout scheme is reasonable in some ways,but there are also some loopholes.The existing water quality monitoring spots are laid out unreasonably,and a scheme to optimize selection of water quality monitoring is obtained.