Hydrological analysis of single and dual storage systems for stormwater harvesting

Brodie, I. M. (2008) Hydrological analysis of single and dual storage systems for stormwater harvesting. Water Science and Technology, 58 (5). pp. 1039-1046. ISSN 0273-1223

Abstract

As stormwater flows are intermittent, the requirement to store urban runoff is important to the design of a stormwater re-use scheme. In many urban areas, the space available to provide storage is limited and thus the need to optimise the storage volume becomes critical. This paper will highlight the advantages and disadvantages of two different approaches of providing storage: 1) a single shallow storage (0.5m depth) in which stormwater capture and a balanced release to supply users is provided by the one unit and 2) a dual storage system in which the functions of stormwater capture and supply release are provided by two separate deeper storage units (2m depth). The comparison between the two strategies is supported by water balance modelling assessing the supply reliability and storage volume requirements for both options. Above a critical volumetric capacity, the supply yield of a dual storage system is higher than that from a single storage of equal volume mainly because of a smaller assumed footprint. The single storages have exhibited greater evaporation loss and are is more susceptible to algae blooms due to long water residence times. Results of the comparison provide guidance to the design of more efficient storages associated with stormwater harvesting systems.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to paper due to publisher copyright restrictions.
Depositing User: Mr Ian Brodie
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 01 Nov 2009 13:21
Last Modified: 02 Jul 2013 23:09
Uncontrolled Keywords: water storage; stormwater re-use; urban runoff; water balance
Fields of Research (FOR2008): 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040608 Surfacewater Hydrology
12 Built Environment and Design > 1204 Engineering Design > 120404 Engineering Systems Design
09 Engineering > 0905 Civil Engineering > 090509 Water Resources Engineering
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9611 Physical and Chemical Conditions of Water > 961101 Physical and Chemical Conditions of Water for Urban and Industrial Use
Identification Number or DOI: doi: 10.2166/wst.2008.469
URI: http://eprints.usq.edu.au/id/eprint/4641

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