Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15110
Title: Partitioning analog for metal elements in urban rainfall-runoff overland flow using the soil conservation service curve number concept
Authors: Mishra, Surendra Kumar
Sansalone J.J.
Singh V.P.
Published in: Journal of Environmental Engineering
Abstract: Employing the basic proportionality concept of the popular Soil Conservation Service curve number (SCS-CN) methodology, 12 metal elements, Zn, Cd, Pb, Ni, Mn, Fe, Cr, Mg, Al, Ca, Cu, and Na, are partitioned between dissolved and particulate bound forms. Study results are based on observed runoff-water quality data for a 300 m2 instrumented paved urban site in Cincinnati, Ohio. In the SCS-CN method, the parameter CN represents the degree of saturation (%) for a watershed loaded by a 10 in. (254 mm) base precipitation amount and leads to the derivation of (a) the seldom explored potential maximum retention (S)-curve number (CN) mapping relation, and (b) a relationship between the antecedent 5 day precipitation amount and the antecedent moisture conditions (AMC). In order to apply this metal partitioning analog, two parameters, the potential maximum desorption ψ and the partitioning curve number (PCN), are postulated as analogous to the SCS-CN parameters S and CN, respectively. These parameters are introduced, along with ψ-PCN and ψ-ADP, where ADP is the antecedent dry period similar to the AMC. Based on these parameters analogous relationships are developed. During a rainfall-runoff event at the upper end of the urban watershed (residence times of less than 1 h), ψ was found to depend on the alkalinity and pH of the rainfall runoff for a given set of physical and chemical particulate characteristics and residence time. The PCN-based ranking of metals is found to be in general agreement with that available in the literature.
Citation: Journal of Environmental Engineering (2004), 130(2): 145-154
URI: https://doi.org/10.1061/(ASCE)0733-9372(2004)130:2(145)
http://repository.iitr.ac.in/handle/123456789/15110
Issue Date: 2004
Keywords: Metals
Overland flow
Rainfall-runoff relationships
Storm water treatment
ISSN: 7339372
Author Scopus IDs: 55463271000
57204999850
57211219633
Author Affiliations: Mishra, S.K., National Institute of Hydrology, Roorkee, UP 247 667, India
Sansalone, J.J., Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803, United States
Singh, V.P., Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803, United States
Corresponding Author: Sansalone, J.J.; Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803, United States; email: jsansal@lsu.edu
Appears in Collections:Journal Publications [WR]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.