Title: Experimental and mathematical modelling study on clogging behaviour of bioretention systems

Authors: Monzur A. Imteaz; Thien Nguyen; Kelvin Kuok

Addresses: Department of Civil and Construction Engineering, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, VIC 3122, Australia ' Manningham City Council, 699 Doncaster Road, Doncaster, Victoria 3108, Australia ' Faculty of Engineering, Computing and Science, Swinburne University of Technology Sarawak Campus, 93350 Kuching, Sarawak, Malaysia

Abstract: This paper presents investigations on clogging effect of bioretention systems within a semi-longer period. Two bioretention systems were selected within Melbourne metropolitan area; one being recent and the other about 6 years old. Peak discharge reduction capabilities of the bioretention systems were assessed through measuring discharges of water inflow and outflow to and from the systems. It was found that the average peak discharge reduction capacity of the new system is 86%, whereas for the old system it is 89%. Model for urban stormwater improvement conceptualisation (MUSIC) models were developed to replicate the discharge measurements and it was found that the MUSIC's estimations are very close to the measurements. MUSIC simulations regarding expected pollutants generations from the associated catchments and pollutants removals through both the bioretention systems are presented in details.

Keywords: water sensitive urban design; WSUD; low impact development; LID; bioretention; clogging effect; modelling; urban stormwater improvement; Australia; peak discharge reduction; MUSIC; simulation; water pollution; pollutants generation; pollutant removal.

DOI: 10.1504/IJHST.2015.069280

International Journal of Hydrology Science and Technology, 2015 Vol.5 No.1, pp.71 - 82

Received: 11 Sep 2014
Accepted: 01 Feb 2015
Published online: 07 May 2015 *

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