Analysis of first flush to improve the water quality in rainwater tanks

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Show simple item record Kus, B Kandasamy, J Vigneswaran, S Shon, HK 2011-02-07T06:22:22Z 2010
dc.identifier.citation Water Science and Technology, 2010, 61 (2), pp. 421 - 428
dc.identifier.issn 0273-1223
dc.identifier.other C1 en_US
dc.description.abstract Although most Australians receive their domestic supply from reticulated mains or town water, there are vast areas with very low population densities and few reticulated supplies. In many of these areas rainwater collected in tanks is the primary source of drinking water. Heavy metals have recently become a concern as their concentration in rain water tanks was found to exceed recommended levels suitable for human consumption. Rainwater storage tanks also accumulate contaminants and sediments that settle to the bottom. Although not widely acknowledged, small amounts of contaminants such as lead found in rain water (used as drinking water) may have a cumulative and poisonous effect on human health over a life time. This is true for certain factors that underlie many of the chronic illnesses that are becoming increasingly common in contemporary society. The paper reports on a study which is part of a project that aims to develop a cost effective in-line filtration system to improve water quality in rainwater tanks. To enable this, the characteristics of rainwater need to be known. One component of this characterization is to observe the effects of the first flush on a rainwater tank. Samples of the roof runoff collected from an urban residential roof located in the Sydney Metropolitan Area in the initial first few millimetres of rain were analysed. The results show that bypassing the first 2mm of rainfall gives water with most water quality parameters compliant with the Australian Drinking Water Guidelines (ADWG) standards. The parameters that did not comply were lead and turbidity, which required bypassing approximately the first 5mm of rainfall to meet ADWG standards. Molecular weight distribution (MWD) analysis showed that the concentration of rainwater organic matter (RWOM) decreased with increasing amount of roof runoff. © IWA Publishing 2010.
dc.language eng
dc.relation.isbasedon 10.2166/wst.2010.823
dc.title Analysis of first flush to improve the water quality in rainwater tanks
dc.type Journal Article
dc.parent Water Science and Technology
dc.journal.volume 2
dc.journal.volume 61
dc.journal.number 2 en_US
dc.publocation London en_US
dc.identifier.startpage 421 en_US
dc.identifier.endpage 428 en_US FEIT.School of Elec, Mech and Mechatronic Systems en_US
dc.conference Verified OK en_US
dc.for 0599 Other Environmental Sciences
dc.personcode 900451
dc.personcode 995130
dc.personcode 920569
dc.personcode 103713
dc.percentage 100 en_US Other Environmental Sciences en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords characterization, first flush, molecular weight size distribution, rainwater en_US
dc.description.keywords Characterization
dc.description.keywords First flush
dc.description.keywords Molecular weight size distribution
dc.description.keywords Rainwater
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group /University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group /University of Technology Sydney/Strength - Technology in Wastewater Treatment
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
utslib.collection.history Closed (ID: 3)

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