摘要
结合河网区水系特征及区域污染物排放特点,确定主要水质影响区。利用单因子指数法以及等标污染负荷法研究运河水质及其影响区污染负荷。借助平原河网区水环境数学模型对各支流出入运河流量比的计算结果,对包括区域外的入运河污染负荷总量进行计算。结果表明,运河监测断面中超标断面占76.2%,氨氮超标最严重,其次为总磷,运河常州段、无锡段水质最差;研究区内工业点源污染负荷贡献率最大,生活源次之;入苏南运河污染物总量为COD2.63万t、氨氮2614.3t、TP316.63t,其中研究区域内各类污染物入运河量所占比重均在79%以上。研究区域内污染负荷是苏南运河水质的主要影响源,常州、无锡为污染控制的重点地区。
Studied region was determined while characteristics of water system of river network area and pollutant emission was fully considered. Water quality of Sunan Canal and pollution load of corresponding affecting region were analyzed with single factor index method and equivalent pollution load method. Total pollution load of Sunan Canal including pollutant in and out of the studied region was calculated with flow proportion by water environment mathematical model of plain river network area. The results indicate that the 76.2% of 21 seetions of Sunan Canal exceeded the water quality standards, the main faetors of exeeeding standard were NH3 N and TP. The quality of water in Changzhou and Wuxi sections is poorer than the other two. In the studied region, industrial point source has the largest pollution load contribution and domestic pollution source takes second place. Sunan Canal has total pollution load with COD 2.63 million tons, NH3-N 2 614. 3 ton and TP 316. 63 ton, of which proportion of pollution load of intraregion is more than 79%. Intra-region pollution load is the main influencing source to water quality of Sunan Canal, Changzhou and Wuxi are the key regions to execute pollution control.
出处
《水土保持研究》
CSCD
北大核心
2009年第5期135-140,共6页
Research of Soil and Water Conservation
基金
国家水体污染控制与治理科技重大专项(2008ZX07526-007)
关键词
水质
污染负荷
苏南运河
water quality
pollution load
Sunan Canal
作者简介
颜润润（1982-），女，江苏涟水人，博士，工程师，主要从事水环境规划与环境影响评价研究。Email：annarr@163．com
