乌鲁木齐市积雪和降雪中BOD_5和COD空间变化分析

Spatial Variation Analysis of the BOD_5 and COD in Snow Cover and the Snowfall in Urumqi City

为明确乌鲁木齐市积雪和降雪中BOD5和COD空间变化规律,对乌鲁木齐市不同功能区的30个采样点进行积雪采集,检测COD和BOD5浓度并进行浓度水平、分布和污染评价,同时选取其中10个相同采样点的降雪与积雪中COD和BOD5的浓度进行对比。结果表明,乌鲁木齐市各功能区积雪中COD平均浓度最高的是交通区,其后依次是商业区>工业区>生活区。BOD5平均浓度最高的是交通区,其后依次是工业区>商业区>生活区。

To clrarify spatial variation of the BOD5 and COD in snow cover and the snowfall in Urumqi city,30 sampling sites were collected from different functional areas in Urumqi,and test COD and BOD5 , concentrations were tested then concentration level,distribution and pollution assessed,at the same time, 10 sites of these 30 snow sampling sites COD and BOD5 were compared.The results indicated that the COD from high to low in each function areas were sequenced as follows：traffic area〉business district〉living area industrial zone;BOD5 from high to low in each function areas were sequenced as follows：traffic area〉industrial zone〉business district〉living quarters.