摘要
研究采用水质指数评价方法,对辽河流域盘锦段4个监测断面水质进行了分析和评价。结果表明,辽河流域盘锦段以三岔河断面水体污染最为严重。2002-2008年期间各断面水质均表现为劣Ⅴ类,首要污染因子为氨氮、生化需氧量和化学需氧量。从水质逐月变化来看,枯水期水质指数最高,丰水期水质指数较低。通过运用主成分分析方法能够准确反应水体污染状况及主要污染指标,研究发现生化需氧量、化学需氧量和高锰酸盐指数对流域污染的贡献率达了47%,表明该地区耗氧有机物污染严重,需控制该地区工农业废水及生活污水的排放,以遏制污染加剧。
Water quality index evaluation method was adopted to analyze and evaluate water quality of 4 sections in Liao River Basin. The results showed that the serious water pollution section was Sanchahe section. The water quality was inferiorⅤ water standard during 2002 to 2008. The main pollution indicators were ammonia, biochemical oxygen demand and chemical oxygen demand. From water quality monthly variation, the highest water quality index appeared during dry season, and lower in flood season. With the method of Principal Component Analysis to evaluate the water quality of Liao River, the results showed that where the contribution rate of biochemical oxygen demand, chemical oxygen demand and permanganate index exceed 47%, illustrating that the primary pollution is organic contamination. It is necessary to control emissions of all kinds of waste water to restraint serious pollution.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2013年第S2期56-60,共5页
Environmental Science & Technology
基金
国家水体污染控制与治理科技重大专项(2012ZX07501-003)
关键词
水环境质量
水质污染
辽河流域
水质指数
主成分分析
water environment quality
water pollution
Liao river basin
water quality index
principal component analysis
