花溪河有机污染物含量变化趋势及成因分析

Variations and Causes of Organic Pollutants in the Huaxi River

通过实地采样监测获取2009—2015年花溪河上游、中游、下游断面的BOD5监测数据,分析比较了花溪河3个断面的有机物含量在12个月份,在丰水期、平水期、枯水期以及在年际间的动态变化趋势。发现2012年以来随着城市污水处理设施及管网的不断完善,花溪河有机物含量持续下降。目前花溪河有机污染的主要来源为未收集完全的生活及工业污水,需要引起流域及城市管理者的重视。

Based on the BOD5 monitoring data of the upper reaches, middle reaches and downstream sections of the Huaxi River from 2009 to 2015, obtained through field sampling monitoring, it is analyzed and compared the contents of organic matters in the three sections during abundant water period, normal water period and low water period in 12 months, as well as the dynamic change trend of years. It indicates that since 2012 the organic matters of the Huaxi River has being reduced with the continuous improvements of the urban sewage treatment facilities and pipe network. At present, the main sources of organic pollution in the Huaxi River come from the not completely collected living and industrial wastewater, which should be paid attention to.