Temporal-spatial distribution and first flush effect of urban stormwater runoff pollution in Shanghai City
Received date: 2006-02-20
Revised date: 2006-05-22
Online published: 2006-12-15
Increased stormwater flow and the companying runoff pollution are a direct result of urbanization and the consequent increase in the proportion of land area under impervious surface.Runoff from urban areas is often presumed to be a significant contributor to nonpoint source（NPS） water pollution and has been identified as one of the major causes of the deterioration of the quality of receiving waters.The objectives of this study were to investigate the characteristics of pollutants in storm events,and the relationships between pollutant load and flow-runoff patterns,and to analyze EMCs loadings of pollutants,and then reveal "First Flush Effect" of road runoff in different functions in Shanghai City. Stormwater quality and quantity were investigated in urbanized catchments in the central Shanghai city in order to characterize temporal-spatial distribution and First Flush Effect of stormwater runoff pollution.Sampling locations selected can be grouped into four sites with different land use categories（traffic,industrial,commercial and residential areas）.Results of the sampling program indicate that concentrations of total suspended solids,TP,chemical oxygen demand(CODCr),ammonia(NH3-N),nitrate(NO-3-N) and NO-2-N present in the runoff from these areas. The result indicates that the concentration of contaminants decreases with the increasing of flow time.And the pollutions variations in traffic area are more complex.Event mean concentrations（EMC） is defined as the total pollution load divided by total runeff volume.The results indicated that the main contaminants of road runoff are TSS and CODCr.The highest EMCs are found in traffic area,then industrial and commercial areas.Residential areas have the lowest pollution level.The relative magnitude of EMC in June is higher than in March rainfall event,especially for the constituents of TSS and CODCr. The first flush phenomenon may be defined as the initial period of stormwater runoff during which the concentration of pollutants is substantially higher than during later stages.The result indicates that the magnitude of the first flush phenomenon was found to be greater for high intensity rainfall events（June 2004） and less for low-intensity ones（March 2004）,and also greater for some pollutants（e.g.suspended solids and chemical oxygen demand） and less for others.Accordingly,the magnitude of the first flush phenomenon is characterized in the order of commercial areas > residential watershed > industrial watershed > traffic areas.
CHANG Jing,LIU Min,XU Shi-yuan,Hou Li-jun,Wang He-yi,Ballo Siaka . Temporal-spatial distribution and first flush effect of urban stormwater runoff pollution in Shanghai City[J]. GEOGRAPHICAL RESEARCH, 2006 , 25(6) : 994 -1002 . DOI: 10.11821/yj2006060006
[1] 许世远上海城市自然地理图集.北京:中国地图出版社,2004
[2] Brezonik Pat rick L,S tadel man n T eresa H A nalys is and predict ive models of st ormw at er run off volumes,l oads,and pollut ant concen t rat ions f rom w atersh eds in t he T w in Cit ies met ropolit an area,M innesot a,U S A W at er R es earch,2002,36:1743~1757
[3] Am ir Taebi,R onald L,e t al Poll ut ion loads in urban r unoff and s anit ary w ast ew at er Science of t h e T ot al Environment,2004,327:175~184
[4] 邢可霞,郭怀成,等流域非点源污染模拟研究.以滇池流域为例地理研究,2005,24(4):549~558
[5] S ans al on e J J,e t al Physi cal charact eri st ics of u rban roadway solids trans port ed du ring rain event s J Environ.E ng.,1998,124:427~440
[6] L ee J H,Bang K i W oong C haract erization of urban st ormw at er run of f Wat er R esource,2000,34(6):1773~1780
[7] D el et ic A,M ak sumovic C T Evalu at ion of w at er qualit y f actors in s torm runof f from paved areas J En vi ron Eng.,1998,124:869~879
[8] G eiger W Flush ing eff ect s in com bined sew er syst ems U rban S t orm D rain age,Lausanne,Sw it zerland,1987,4:40~46
[9] Gu pta K,S au l A J Specif ic relat ionshi ps f or t he f irst f lus h load in combin ed s ew er fl ows Wat er Resource,1996,30:1244~1252
[10] S ans al on e J J,Buchb erger S G Part it ioning and firs t f lus h of m et al s in u rban roadw ay st orm w at er J EnvironE ng,1997,123(2):134~143
[11] L ee J H,Bang K W,K etchum L H e t al Firs t f lu sh analysis of urb an st orm run of f Th e Science of t he Tot al Environm ent,2002,293:163~175
[12] 刘忠翰,贺彬,等滇池不同流域类型降雨径流对河流氮磷入湖总量的影响地理研究,2004,23(5):593~604
[13] 王和意,刘敏,等.城市降雨屋面径流污染分析和管理控制长江流域资源与环境,2005,14(3):367~37.
[14] 蒋海燕,刘敏,顾琦,等.上海城市降水径流营养盐氮负荷及空间分布.城市环境与城市生态,2002,15(1):15~17
[15] 顾琦,刘敏,蒋海燕,等.上海市区降水径流磷的负荷空间分布.上海环境科学,2002,21(4):213~215
[16] 王和意,刘敏,等.城市降雨径流非点源污染分析与研究进展.城市环境与城市生态,2003,16(6):283~285
[17] 汪慧贞,李宪法.北京城区雨水径流的污染及控制.城市环境与城市生态,2002,15(2):16~18
[18] 张亚东,车伍,等.北京城区道路雨水径流污染指标相关性分析.城市环境与城市生态,2003,16(6):182~184
[19] 卓慕宁,吴志峰,等.珠海城区降雨径流污染特征初步研究.土壤学报,2003,40(5):775~778
[20] 何庆慈,李立.武汉市汉阳区的暴雨径流污染特征.中国给水排水,2005,21(2):101~103
[21] 沈桂芬,张敬东.武汉降雨径流水质特性及主要影响因素分析.水资源保护,2005,21(2):57~7.
[22] 李怀恩.估算非点源污染负荷的平均浓度法及其应用.环境科学学报,2000,20(4):397~400
[23] 岑国平,沈晋.城市暴雨径流计算模型的建立和检验.西安理工大学学报,1996,12(3):184~190
[24] 张伟,周永潮.城市雨水径流污染负荷计算及评价模型.湖南城市学院学报(自然科学版),2005,14(1):27~29
[25] 曾晓岚,张智,等.城市雨水口地面暴雨径流模型研究.重庆建筑大学学报,2004,26(6):78~85
[26] 顾圣华.上海地区水文特性探讨.上海水务,2003,19(4):38~40
[27] 国家环保局.水和废水监测分析方法.第3版北京:中国环境科学出版社,.989
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