环境工程学报2024，Vol.18Issue(2)：513-522,10.DOI:10.12030/j.cjee.202310142
长江流域丘陵与平原2类典型城镇面源污染来源解析
Sources analysis the of urban non-point source pollution in in two typical towns of hill and plain in the Yangtze River Basin
摘要
Abstract
In the hilly urban area of Yongchuan District,Chongqing,and the plain urban area of Jintan District,Changzhou,both situated in the Yangtze River Basin,four areas with two drainage systems(namely,combined system and separate system)were selected as study objects.Quality data of rivers,riverine outfalls,and surface runoff in these areas were systematically monitored during rainy days.The study employed the river mass conservation method to assess the contributions of non-point source(NPS)to river pollution;employed the PMF model to trace the pollution sources to riverine outfall;and employed the surface runoff mass conservation method to analysis the pollution sources to surface runoff.The results showed that:Urban NPS contributed to the five water quality indicators(SS,COD,NH3-N,TN and TP)in the rivers in the four study areas to a certain extent,and the specific contribution rates were related to the rainfall levels,regional characteristics and drainage regimes;During rainfall events in both types of towns,surface runoff was identified as the primary source of SS and COD loads at the riverine outfalls.On the other hand,NH3-N,TN,and TP loads were predominantly contributed by sanitary sewage and sewer sediments at these outfalls in the two different drainage regimes;Influenced by factors such as topographic slope and population density,the main pollutant-producing surfaces of Yongchuan and Jintan were different,with Yongchuan being neighborhood roads and Jintan being traffic roads and roofs.Targeted control measures were proposed to improve the refined management of urban NPS pollution in the above study area.关键词
丘陵城镇/平原城镇/城镇面源污染/质量守恒法/PMF模型Key words
hill urban/plain urban/urban non-point source/mass conservation method/PMF model分类
资源环境引用本文复制引用
林炳权,胡潜,孙德智,安欣琪,赵晨,高雅弘,刘宇轩,钟寅,齐飞,邱斌,王振北..长江流域丘陵与平原2类典型城镇面源污染来源解析[J].环境工程学报,2024,18(2):513-522,10.基金项目
国家重点研发计划资助项目(2021YFC3201504) （2021YFC3201504）
