摘要
以2011—2020年沈阳市蒲河流域市控地表水断面监测结果为依据,从水质类别、监测指标超标情况、主要污染指标变化情况和综合污染指数四个方面分析蒲河水环境质量变化,以期为蒲河流域水质研究及改善提供科学支撑。统计结果表明:2011—2017年蒲河水质劣于地表水Ⅴ类标准,2018—2019年蒲河水质符合地表水Ⅴ类标准,2020年水质符合地表水Ⅳ类标准,蒲河水质明显好转;蒲河超标项目由2011年的7项减少至2020年的3项;近十年蒲河主要污染指标浓度总体呈波动下降趋势,五日生化需氧量降低47.5%,氨氮降低79.5%,总磷降低66.1%;蒲河水质综合污染指数呈波动下降趋势,由2011年的18.7下降至2020年的5.4。
Based on the monitoring results of the city-controlled surface water section of Puhe River Basin in Shenyang City from 2011to 2020,the water environment quality changes in Puhe River will be analyzed from four aspects: water quality categories,monitoring indicators exceeding standards,changes in major pollution indicators,and comprehensive pollution indexes. Provide scientific support for the research and improvement of the water quality of the Pu River Basin. The statistical results show that the water quality of Puhe River in 2011—2017 was inferior to the Grade V standard for surface water,the water quality of Puhe River in 2018—2019 meets the Grade V standard for surface water,and the water quality in 2020 meets the Grade IV standard for surface water,and the water quality of Pu River has improved significantly;The 7 items in 2011 were reduced to 3 items in 2020;the concentration of the main pollution indicators of Puhe River in the past ten years has generally fluctuated and declined. The five-day biochemical oxygen demand decreased by 47.5%,ammonia nitrogen decreased by 79.5%,and total phosphorus decreased by 66.1%;Puhe water quality The comprehensive pollution index has fluctuated and declined,from 18.7 in 2011 to 5.4 in 2020.
作者
王姝欣
WANG Shu-xin(Shenyang Environmental Monitoring Centre,Shenyang 110169,China)
关键词
蒲河
水环境质量
污染指标
Pu river
water environment quality
pollution index
作者简介
王姝欣,女,1981年出生,高级工程师,硕士,研究方向为环境监测。
