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Stormwater quality and pollution loading from an urban residential catchment in Johor, Malaysia

Yusop, Zulkifli and Nazahiyah, R. and Abustan, I. (2007) Stormwater quality and pollution loading from an urban residential catchment in Johor, Malaysia. Water Science and Technology, 56 (7). pp. 1-9. ISSN 0273-122384

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Official URL: http://dx.doi.org/10.2166/wst.2007.692

Abstract

Sampling of urban runoff was carried out in a small catchment, which represents a residential area (3.34 ha) in Skudai, Johor. One hundred and seventeen runoff samples from ten storm events were analysed. Runoff quality showed large variations in concentrations during storms, especially for SS, BOD5 and COD. Concentrations of NO3-N, NO2-N, NH3-N, and P were also high. Lead (Pb) was also detected but the levels were low (<0.001 mg/L). In general, the river quality is badly polluted and falls in Class V based on the Malaysian Interim National Water Quality Standards. Event mean concentrations for all parameters were found to vary greatly between storms. The values (mg/L) were BOD5 (72), COD (325), SS (386), NO3-N (2.5), NO2-N (0.58), NH3-N (6.8), P (3.4), respectively. First flush phenomena were observed for BOD, COD, SS, NO3-N, NH3-N and P. The first 20–30% of the runoff volume evacuated between 20–59% BOD, 15–69% COD, 15–78% SS, 14–49% NO3-N, 14–19% NO2-N, 23–53% NH3-N and 23–43% P.

Item Type:Article
Uncontrolled Keywords:First flush; pollutant loading; residential catchment; water quality
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:8492
Deposited By: Ms Zalinda Shuratman
Deposited On:05 May 2009 05:14
Last Modified:08 Nov 2011 04:38

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