摘要
为研究郪江流域遂宁段水环境质量,对郪江干流和8条支流开展了现场调查和定期监测。采用内梅罗综合污染指数、断面类别比例法和水环境质量指数对流域水质进行了综合分析。利用综合营养状态指数对水源地水体富营养化进行了评价。结果表明:郪江流域遂宁段水质不能够达到《地表水环境质量标准》(GB3838-2002)Ⅲ类标准要求,水质为轻度污染,枯、平水期水质优于丰水期。支流水质较差,加重了干流水体负荷。流域部分饮用水源地为Ⅳ类水质,同时表现为轻度富营养化。研究成果为水质改善提供理论依据和水生态环境质量稳定达标提供技术支撑。
In order to study the water environment quality in Suining section of Qijang River,a field investigation and periodic monitoring in the Qijiang main stream and eight tributaries were conducted.Nemerow comprehensive index,section category scale method and water environmental quality index were used to comprehensively analyze the water quality.The eutrophication of water body in the water source area was evaluated by using the comprehensive trophic state index.The results showed that the water quality in Suining section of Qijiang River was slightly polluted,which could not meet the class II of《Surface Water Environment Quality Standard》(GB3838-2002).The water quality in dry and normal seasons was better than that in wet season.The water quality of the tributaries were poor,which aggravated the load of the main stream water bodies.The water quality of some drinking water resources in the basin were class IV and showed mild eutrophication.The research results provide theoretical basis for water quality improvement and technical support for meeting water environment quality standard stably.
作者
张海柱
杨平
王璞
唐红军
庞丽娜
ZHANG Hai-zhu;YANG Ping;WANG Pu;TANG Hong-jun;PANG Li-na(Monitoring Center for Environment,Suining of Sichuan Province,Suining,Sichuan 629000,China;College of Architecture&Environment,Sichuan University,Chengdu 610065,China)
出处
《四川环境》
2023年第5期104-110,共7页
Sichuan Environment
基金
四川大学-遂宁市人民政府校市合作项目(2020CDSN-21)。
关键词
郪江
遂宁
水环境
营养化
成因
Qijiang river
Suining
water environment
eutrophication
cause
