Assessing the combined benefits of water recycling technologies by modelling the total urban water cycle

Rozos, E; Makropoulos, C

dc.contributor.author	Rozos, E	en
dc.contributor.author	Makropoulos, C	en
dc.date.accessioned	2014-03-01T02:07:51Z
dc.date.available	2014-03-01T02:07:51Z
dc.date.issued	2012	en
dc.identifier.issn	1573062X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29615
dc.subject	greywater treatment	en
dc.subject	optimisation	en
dc.subject	rainwater harvesting	en
dc.subject	runoff model	en
dc.subject	sensitivity analysis	en
dc.subject	urban water cycle	en
dc.subject.other	land cover	en
dc.subject.other	optimization	en
dc.subject.other	rainwater	en
dc.subject.other	runoff	en
dc.subject.other	sensitivity analysis	en
dc.subject.other	sustainable development	en
dc.subject.other	water demand	en
dc.subject.other	water supply	en
dc.subject.other	water treatment	en
dc.title	Assessing the combined benefits of water recycling technologies by modelling the total urban water cycle	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/1573062X.2011.630096	en
heal.identifier.secondary	http://dx.doi.org/10.1080/1573062X.2011.630096	en
heal.publicationDate	2012	en
heal.abstract	This study investigates the potential benefits of new technologies, modern appliances, and innovative techniques that help to improve the performance of the urban water cycle. Urbanisation is a major source of additional pressures (both qualitative and quantitative) on the environment. For example abstractions to cover the increased demands for water supply or alterations of the topographic and geomorphologic properties of the land cover result in considerable changes to the dynamics of the hydrosystem (change of average and maximum values of flows). Sustainable, water-aware technologies, like SUstainable Drainage Systems (SUDS) and rainwater harvesting schemes, can be implemented to reduce these adverse effects. These technologies introduce interactions between the components of the urban water cycle. Rainwater harvesting for example, apart from the potable water demand reduction, may have a significant influence on the generated runoff. Consequently, an integrated modelling of the urban water cycle is necessary for the simulation of the water-aware technologies and the identification of their combined benefits. In this study, two hypothetical developments implement rainwater harvesting schemes and SUDS and are simulated using the Urban Water Optioneering Tool (UWOT), which is capable of using rainfall time series of arbitrary time steps. The two hypothetical developments were studied to investigate the contribution of the water-aware technologies to the minimisation of the environmental pressures. Significantly different urban density was assigned to these developments to highlight the influence of urban density on the efficiency and reliability of the water-aware technologies. The results indicate that: (a) water-saving schemes like rainwater harvesting and greywater treatment can reduce significantly the pressures of new developments (e.g., reduction of potable water demand by 27%); (b) the reliability of the water-aware technologies decreases with urban density; and (c) if localised rainwater harvesting is implemented then the efficiency of the water appliances influences considerably the generated runoff. © 2012 Copyright Taylor and Francis Group, LLC.	en
heal.journalName	Urban Water Journal	en
dc.identifier.doi	10.1080/1573062X.2011.630096	en
dc.identifier.volume	9	en
dc.identifier.issue	1	en
dc.identifier.spage	1	en
dc.identifier.epage	10	en