Time as the critical factor in the investigation of the relationship between pollutant wash-off and rainfall characteristics


Autoria(s): Alias, Noraliani; Liu, An; Goonetilleke, Ashantha; Egodawatta, Prasanna
Data(s)

01/03/2014

Resumo

The approach adopted for investigating the relationship between rainfall characteristics and pollutant wash-off process is commonly based on the use of parameters which represent the entire rainfall event. This does not permit the investigation of the influence of rainfall characteristics on different sectors of the wash-off process such as first flush where there is a high pollutant wash-off load at the initial stage of the runoff event. This research study analysed the influence of rainfall characteristics on the pollutant wash-off process using two sets of innovative parameters by partitioning wash-off and rainfall characteristics. It was found that the initial 10% of the wash-off process is closely linked to runoff volume related rainfall parameters including rainfall depth and rainfall duration while the remaining part of the wash-off process is primarily influenced by kinetic energy related rainfall parameters, namely, rainfall intensity. These outcomes prove that different sectors of the wash-off process are influenced by different segments of a rainfall event.

Formato

application/pdf

Identificador

http://eprints.qut.edu.au/68175/

Publicador

Elsevier

Relação

http://eprints.qut.edu.au/68175/1/Time_as_the_critical_factor_in_the_investigation_of_the_relationship_between_pollutant_wash-off_and_rainfall_characteristics.pdf

http://www.sciencedirect.com/science/article/pii/S0925857414000093

DOI:10.1016/j.ecoleng.2014.01.008

Alias, Noraliani, Liu, An, Goonetilleke, Ashantha, & Egodawatta, Prasanna (2014) Time as the critical factor in the investigation of the relationship between pollutant wash-off and rainfall characteristics. Ecological Engineering, 64, pp. 301-305.

Direitos

Copyright 2014 Elsevier B.V.

NOTICE: this is the author’s version of a work that was accepted for publication in Ecological Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Ecological Engineering, [Volume 64, (March 2014)] DOI: 10.1016/j.ecoleng.2014.01.008

Fonte

School of Earth, Environmental & Biological Sciences; Science & Engineering Faculty

Palavras-Chave #090500 CIVIL ENGINEERING #090508 Water Quality Engineering #Pollutant wash-off #Water Sensitive Urban Design #Stormwater quality #Stormwater pollutant processes #Multivariate analysis
Tipo

Journal Article