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First flush of storm runoff pollution from an urban catchment in China 总被引:13,自引:0,他引:13
Storm runoff pollution process was investigated in an urban catchment with an area of 1.3 km^2 in Wuhan City of China. The results indicate that the pollutant concentration peaks preceded the flow peaks in all of 8 monitored storm events. The intervals between pollution peak and flow peak were shorter in the rain events with higher intensity in the initial period than those with lower intensity. The fractions of pollution load transported by the first 30% of runoff volume (FF30) were 52.2%-72.1% for total suspended solids (TSS), 53.0%-65.3% for chemical oxygen demand (COD), 40.4%-50.6% for total nitrogen (TN), and 45.8%-63.2% for total phosphorus (TP), respectively. Runoff pollution was positively related to non-raining days before the rainfall. Intercepting the first 30% of runoff volume can remove 62.4% of TSS load, 59.4% of COD load, 46.8% of TN load, and 54.1% of TP load, respectively, according to all the storm events. It is suggested that controlling the first flush is a critical measure in reduction of urban stormwater pollution. 相似文献
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7月18日,今年第七号台风“海鸥”横扫台湾后正面登陆福建省宁德市霞浦县,直接考验着挂牌成立仅48天的福建省交警总队宁德高速公路支队这支年轻的队伍。面对来势凶猛的风暴,全支队130多位高速交警上下一心,凭借坚定、热情和信心,在“海鸥”的风雨中书写“平安”两个大字。 相似文献
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唐小丽 《安全.健康和环境》2006,6(8):50-50
下午4点刚一接班,窗外就飞沙走石乌云密布了.接班后,荆门分公司焦化装置的班长老刘严肃地说:"天气预报今晚有暴风雨,调度要求晚上做好防洪防汛工作,装置严防晃电停电事故."一番简洁的交接班会后,大家纷纷回到了各自的岗位上. 相似文献
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英国是一个岛国,西临大西洋,国土分布在北纬50°到北纬60°之间,海洋性温带阔叶林气候,气候温和,在四季循环交替之中,温度很少超过32度或是低于零下10度。主要自然灾害有暴风雨、洪水、风暴潮等,极少发生干旱和雪灾。 相似文献
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毕鹏程 《安全.健康和环境》2012,12(3):3-I0001
一位相熟的德国技术专家,谈起家乡罗斯托克,2011年曾遭遇了一场20年未遇的特大暴风雨。人潮汇集的地铁站、附带数个出口,连同城市主要设施竟丝毫未损。原因是地铁出口均设置在街区较高地段,并有高于地面1.5米的步行台阶,阻挡了水流,城市排水系统分流也很及时。这种防范布局环环相扣,科学缜密,整个险情被有效化解了。 相似文献
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