%0 Journal Article
%T Nitrogen and Phosphorus Composition in Urban Runoff from the New Development Area in Beijing<br>北京市新建城区不透水地表径流N、P输出形态特征研究
%A LI Li-qing
%A LV Shu-cong
%A ZHU Ren-xiao
%A LIU Ze-quan
%A SHAN Bao-qing
%A <br>李立青
%A 吕书丛
%A 朱仁肖
%A 刘泽权
%A 单保庆
%J 环境科学
%D 2012
%I 
%X Stormwater runoff samples were collected from two impervious roof and road of the new development area in Beijing, during three rainfall events in an attempt to characterize the urban runoff and determine nitrogen and phosphorus composition. The outcomes are expected to offer the practical guidance in sources control of urban runoff pollution. The results indicated that the stormwater runoff from the studied area presented a strong first flush for all monitored events and constituents. Eighty percent of the total pollutant loads were transported by the first 10 mm flow volume for roof runoff, whereas 80% of the total pollutant loads were discharged by the first 15 mm flow volume for road runoff. Average EMCs of TSS, COD, TN, NH4+-N, NO3--N and TP for roof runoff were 50.2 mg·L-1, 81.7 mg·L-1, 6.07 mg·L-1, 2.94 mg·L-1, 1.05 mg·L-1, and 0.11 mg·L-1, respectively. Average EMCs of TSS, COD, TN, NH4+-N, NO3--N and TP for road runoff were 539.0 mg·L-1, 276.4 mg·L-1, 7.00 mg·L-1, 1.71 mg·L-1, 1.51 mg·L-1, and 0.61 mg·L-1, respectively. Moreover, for the roof runoff, the particle-bound fraction was 20.8% for COD, 12.3% for TN, and 49.7% for TP. For road runoff, the particle-bound fraction was 68.6% for COD, 20.0% for TN, and 73.6% for TP. Nitrogen in roof runoff was predominantly dissolved (87.7%), with ammonia (57.6%) and nitrate (22.5%). Nitrogen in road runoff was also predominantly dissolved (80.0%), with ammonia (42.1%) and nitrate (35.0%). These findings can assist the development of effective source control strategies to immobilize dissolved and particulate-bound nitrogen/phosphorus in urban stormwater.
%K nitrogen and phosphorus composition
%K urban runoff
%K water quality
%K source area monitoring
%K new development area<br>氮磷组成
%K 城市地表径流
%K 水质
%K 源区监测
%K 新建城区
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=86C3BEBAAA7022F87B7F4795AECC27F9&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=708DD6B15D2464E8&sid=00FA06523CF1EBF1&eid=F7505FD24BEF1E81&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=20