Long Term Monitoring of Storm Surface Runoff from Urban Pavement Road in Korea

Lee, C. S.; Seo, Gyutae; Lee, J. H.; Yoon, Y. S.; You, Jinjun; Sin, Chang-Dong

doi:10.4491/eer.2008.13.4.184

Cited by 5 publications

(3 citation statements)

References 2 publications

(2 reference statements)

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“…The road sites showed higher EMC values for T-N and T-P than highway sites. Overall, the EMC results are similar to those from Lee et al (2008) who monitored highway site in different regions. The wide distributions of EMCs depend on the total rainfall and rainfall intensity because of the dilution effect during a storm.…”

Section: Event Mean Concentration (Emc)supporting

confidence: 88%

Size distributions and settling velocities of suspended particles from road and highway

et al. 2010

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Characterization of particles from road runoff is very important for the selection of Best Management Practice (BMP) in the stormwater management. In this study, runoff samples during two rainfall events at four sites in Gyunggio-Do were collected and Particle Size Distributions (PSD) in the size range of 2-880 µm were determined. Then number and mass fraction of each size range was obtained from a total of 89 samples. Also, rainfall amount, flow rate, and other pollutants in samples were analyzed. Particles with less than 5 µm accounted for more than 80% of number fraction while their mass fraction was about 12%. Particles larger than 50 µm contributed more than 40% of mass fraction. Partial Event Mean Concentration (PEMC) of particle showed inverse relationship with accumulated rainfall and sharply decreased at the early stage of rainfall, implying that the first flush is major contribution to particle runoff. Other pollution parameters such as turbidity, TSS, BOD, TN, and TP also have similar temporal runoff trend with the PEMC. Particle settling velocities of runoff particles were obtained by column tests and their values were compared with theoretical velocities. Based on the settling velocity distribution, removal efficiency of particles from runoff by sedimentation was evaluated.

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Section: Event Mean Concentration (Emc)supporting

confidence: 88%

Size distributions and settling velocities of suspended particles from road and highway

et al. 2010

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“…However, affected by rainfall distribution and catchments types, EMC of urban runoff is significantly variable in each event or in each catchment [22]. Then, average EMC (AEMC) was put forward to predict the overall runoff quality accurately by data from more than one rainfall event [23].…”

Section: Resultsmentioning

confidence: 99%

Characterization of Urban Runoff Pollution between Dissolved and Particulate Phases

Zhang

Tang

2013

The Scientific World Journal

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To develop urban stormwater management effectively, characterization of urban runoff pollution between dissolved and particulate phases was studied by 12 rainfall events monitored for five typical urban catchments. The average event mean concentration (AEMC) of runoff pollutants in different phases was evaluated. The AEMC values of runoff pollutants in different phases from urban roads were higher than the ones from urban roofs. The proportions of total dissolved solids, total dissolved nitrogen, and total dissolved phosphorus in total ones for all the catchments were 26.19%–30.91%, 83.29%–90.51%, and 61.54–68.09%, respectively. During rainfall events, the pollutant concentration at the initial stage of rainfall was high and then sharply decreased to a low value. Affected by catchments characterization and rainfall distribution, the highest concentration of road pollutants might appear in the later period of rainfall. Strong correlations were also found among runoffs pollutants in different phases. Total suspended solid could be considered as a surrogate for particulate matters in both road and roof runoff, while dissolved chemical oxygen demand could be regarded as a surrogate for dissolved matters in roof runoff.

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“…The average pollutant concentrations of typical water quality parameters in urban runoff studies are generally quantified by means of the EMC. Given that stormwater runoff s associated with high uncertainties due to site and rainfall characteristics, the EMC values can also be affected, as reflected by the wide distribution and deviation of the EMC values found in several studies in Korea [6,17,18]. For example, the pollutant EMC values based on 12 stormwater runoff studies by Kim et al [17], conducted at parking lots, resulted in average EMC values of 115, 35, 4 and 1 mg/L for TSS, BOD, TN and TP, respectively.…”

Section: Event Mean Concentrationmentioning

confidence: 99%

Appropriate Methods in Determining the Event Mean Concentration and Pollutant Removal Efficiency of a Best Management Practice

Maniquiz¹,

Choi²,

Lee³

et al. 2010

Environmental Engineering Research

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This study attempted to develop and suggest a more appropriate method for the determination of event mean concentration (EMC) and pollutant removal efficiency of a stormwater best management practice (BMP) considering rainfall. The stormwater runoff and hydrologic data gathered from 22 storm events during a 28-month monitoring period on a swirl and filtration type of BMP were used to evaluate the developed methods. Based on the findings, the modified EMC method resulted in lower (average) values than the overall EMC, although the differences were not significant (P>0.05). By comparison, the developed 'Rainfall Occurrence Ratio' (ROR) method was most significantly correlated (r=0.967 to 988, P<0.009) with the other existing removal efficiency determination methods such as the 'Efficiency Ratio' (ER), 'Summation of Loads' (SOL) and 'Regression of Loads' (ROL) methods. In addition, the ROR method gave the highest efficiency values, with no significant differences with any of the pollutant parameters, unlike the other three methods. These results were obtained because the ROR method integrated both pollutant loading and rainfall, which are not considered by the other three methods. Therefore, this study proved the suitability of the modified EMC and ROR methods for application in other BMP monitoring studies.

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Long Term Monitoring of Storm Surface Runoff from Urban Pavement Road in Korea

Cited by 5 publications

References 2 publications

Size distributions and settling velocities of suspended particles from road and highway

Size distributions and settling velocities of suspended particles from road and highway

Characterization of Urban Runoff Pollution between Dissolved and Particulate Phases

Appropriate Methods in Determining the Event Mean Concentration and Pollutant Removal Efficiency of a Best Management Practice

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