Mathematical modeling of first flush in highway storm runoff using genetic algorithm

The Science of the Total Environment
Arash MassoudiehMasoud Kayhanian

Abstract

A mechanistic model was developed to predict the highway runoff pollutographs during precipitation events. Pollutants were assumed to be in two phases, attached to the pavement surface and mobile in the runoff water. Detachment and reattachment of contaminants were considered as rate-limited processes and the detachment rate was assumed to be a function of flow velocity by a power expression. The build-up of pollutants on the surface during the dry period between the storm events was also included in the model. Using measured pollutographs from three highly urbanized highway sites in Los Angeles, California, a hybrid genetic algorithm was used to estimate the model parameters for four different constituents including total suspended solids, oil and grease, dissolved copper, and particulate copper. The model was then validated by predicting pollutographs for the same site for a different monitoring season. Results revealed that estimated model parameters were different for particle-associated and dissolved constituents. These findings suggest different mechanisms governing the detachment of particle-associated and dissolved constituents from the surface. The results have also indicated that there is a linear build-up of pollutan...Continue Reading

References

Mar 22, 2001·The Science of the Total Environment·Y YuanC Oldham
Sep 16, 2005·The Science of the Total Environment·Lee-Hyung KimMichael K Stenstrom
Nov 4, 2006·Water Research·Joo-Hyon KangMichael K Stenstrom
Dec 13, 2006·Journal of Environmental Management·M KayhanianK Tsay

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Citations

May 19, 2009·The Science of the Total Environment·Tamar Opher, Eran Friedler
Dec 27, 2011·Water Environment Research : a Research Publication of the Water Environment Federation·Soroosh SharifiMasoud Kayhanian
Jan 24, 2017·Journal of Sustainable Water in the Built Environment·Mehran NiaziArash Massoudieh
Aug 25, 2020·Journal of Sustainable Water in the Built Environment·Jamal AlikhaniArash Massoudieh
Sep 19, 2019·Water Research·Thamali PereraAshantha Goonetilleke
Sep 18, 2013·Environmental Science & Technology·Saeed TorkzabanArash Masoudih

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