Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6326458 | Science of The Total Environment | 2015 | 12 Pages |
Abstract
Despite providing water-related services as the primary purpose of urban water system (UWS), all relevant activities require capital investments and operational expenditures, consume resources (e.g. materials and chemicals), and may increase negative environmental impacts (e.g. contaminant discharge, emissions to water and air). Performance assessment of such a metabolic system may require developing a holistic approach which encompasses various system elements and criteria. This paper analyses the impact of integration of UWS components on the metabolism based performance assessment for future planning using a number of intervention strategies. It also explores the importance of sustainability based criteria in the assessment of long-term planning. Two assessment approaches analysed here are: (1) planning for only water supply system (WSS) as a part of the UWS and (2) planning for an integrated UWS including potable water, stormwater, wastewater and water recycling. WaterMet2 model is used to simulate metabolic type processes in the UWS and calculate quantitative performance indicators. The analysis is demonstrated on the problem of strategic level planning of a real-world UWS to where optional intervention strategies are applied. The resulting performance is assessed using the multiple criteria of both conventional and sustainability type; and optional intervention strategies are then ranked using the Compromise Programming method. The results obtained show that the high ranked intervention strategies in the integrated UWS are those supporting both water supply and stormwater/wastewater subsystems (e.g. rainwater harvesting and greywater recycling schemes) whilst these strategies are ranked low in the WSS and those targeting improvement of water supply components only (e.g. rehabilitation of clean water pipes and addition of new water resources) are preferred instead. Results also demonstrate that both conventional and sustainability type performance indicators are necessary for strategic planning in the UWS.
Keywords
RWHMCMUWSWSSCSOWSCGWRGreywater recyclingWTWKPIGHGRain water harvestingO&MBaUUrban watermulti-criteria assessmentWater supplyWater demandPopulationReceiving waterCompromise programmingCombined sewer overflowUrban water systemWater supply systemIntegrated systemPerformance indicatorkey performance indicatorSewer networkOperations and maintenanceWater resourcepopSustainabilityBusiness as UsualGreenhouse gas
Related Topics
Life Sciences
Environmental Science
Environmental Chemistry
Authors
Kourosh Behzadian, Zoran Kapelan,