Impact of water management practice scenarios on wastewater flow and contaminant concentration

Marleni, Ni Nyoman Nepi; Gray, Stephen; Sharma, Ashok; Burn, Stewart; Muttil, Nitin

doi:10.1016/j.jenvman.2014.12.010

Cited by 32 publications

(18 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rehan et al [26] showed that the I&I makes a significant contribution to wastewater volume as the monthly volume of collected wastewater is 25% higher than the corresponding volume of metered water, and at peak-flow exceeds it by 74%. Marleni et al [29] demonstrated that water-use reduction in various water-demand management scenarios increases the concentration of sulfide and sulfate levels by 30% and 40%, respectively. These two compounds, which are the main source of hydrogen sulfide formation, will cause odor problems and corrosion of WWC pipes.…”

Section: Cld Developmentmentioning

confidence: 99%

See 1 more Smart Citation

Sustainability Assessment of Asset Management Decisions for Wastewater Infrastructure Systems—Development of a System Dynamic Model

Mohammadifardi

Knight

Unger

2019

Systems

View full text Add to dashboard Cite

This paper presents the development of a novel system dynamics (SD) model for better understanding the interrelation and feedback mechanism between the wastewater collection (WWC) and wastewater treatment plant (WWTP) systems. Causal loop diagrams (CLDs) are developed and discussed to depict and understand feedback and inter-connections between physical, financial, and consumer sectors. The developed SD model is then extended to include the greenhouse gas (GHG) emissions, as a proxy for the environmental sector and for an environmental sustainability assessment of strategic decisions related to asset management planning of wastewater infrastructure system. It also adds new policy levers, such as population growth and urban densification in the social sector, and minimum fee-hike rates in the finance sector to enhance the representation of real-world conditions in the asset management planning. This new SD model will enable decision-makers to assess the sustainability impacts of their strategic decisions on wastewater systems, find synergistic cost-saving opportunities, and improve the sustainability performance of their asset management plans.

show abstract

Section: Cld Developmentmentioning

confidence: 99%

“…Marleni et al [29] demonstrated that water-use reduction in various water-demand management scenarios increases the concentration of sulfide and sulfate levels by 30% and 40%, respectively. These two compounds, which are the main source of hydrogen sulfide formation, will cause odor problems and corrosion of WWC pipes.…”

Section: Cld Developmentmentioning

confidence: 99%

Sustainability Assessment of Asset Management Decisions for Wastewater Infrastructure Systems—Development of a System Dynamic Model

Mohammadifardi

Knight

Unger

2019

Systems

View full text Add to dashboard Cite

show abstract

“…Additionally, it has the capacity to simulate contaminants through the already-obtained water balances. Note that the model assumes no degradation or conversion of the contaminants during the different steps [34,40,41]. UVQ was chosen in light of the fact that it is a free tool, encompasses all components of the urban water cycle, and is suitable for expansive urban areas such as Bogotá.…”

Section: Urban Volume and Quality (Uvq)mentioning

confidence: 99%

Simulation of Infrastructure Options for Urban Water Management in Two Urban Catchments in Bogotá, Colombia

Peña-Guzmán

Melgarejo

Lopez-Ortiz

et al. 2017

Water

View full text Add to dashboard Cite

Urban areas are currently experiencing rapid growth, which brings with it increases in the population, the expansion of impervious surfaces, and an overall jump in the environmental and hydrological impact. To mitigate such an impact, different strategies proposed to tackle this problem often vary; for example, stormwater tanks, the reuse of wastewater and grey water, the installation of equipment to reduce water consumption, and education-based approaches. Consequently, this article presents the simulation and evaluation of implementing infrastructure options (stormwater harvesting, reuse of industrial waters, water-saving technology in residential sectors, and reuse of water from washing machines) for managing urban water in two urban catchments (Fucha and Tunjuelo) in Bogotá, Colombia, over three periods: baseline, 10 years, and 20 years. The simulation was performed using the software Urban Volume Quality (UVQ) and revealed a possible reduction in drinking water consumption of up to 47% for the Fucha Catchment and 40% for the Tunjuelo Catchment; with respect to wastewater, the reduction was up to 20% for the Fucha Catchment and 25% for the Tunjuelo Catchment. Lastly, two scenarios were evaluated in terms of potential savings related to water supply and sewage fees. The implementation of strategies 3 and 6 insofar as these two strategies impacted the hydric resources. Therefore, there would be a significant reduction in contaminant loads and notable economic benefits attributable to implementing these strategies.

show abstract

“…The extensive lengths of underground sewer networks in cities globally and their long lifespans make any additional costs to their repair and rehabilitation very significant [3]. The impacts of climate change and the introduction of sustainable planning frameworks for urban water systems, specifically the focus on increasing decentralized water recycling and reducing per capita water use, bring additional uncertainty to the inflow volumes and solids concentration in sewers [4][5][6][7]. Lower inflows to sewers with an increased solids concentration can increase the rate of excess solids deposition [8]; hence, the current uncertainties around wastewater inflows and concentration in sewers provide a fresh impetus to examine and progress sewer solids models.…”

Section: Introductionmentioning

confidence: 99%

SewerSedFoam: A Model for Free Surface Flow, Sediment Transport, and Deposited Bed Morphology in Sewers

Murali

Hipsey

Ghadouani

et al. 2020

Water

View full text Add to dashboard Cite

This paper aims to bridge the gap in the detailed modelling of flow and sediment process interactions in sewers through the development of a computational fluid dynamics (CFD) model. It draws on previous models developed for surface water sediment transport in the OpenFOAM CFD framework and builds on them to improve their suitability for sewer sediment processes. Three distinct sediment processes, suspended sediment transport, bedload transport, and deposited bed morphology, are incorporated into a free surface flow solver, interFoam. This sewer sediment model, called SewerSedFoam, models the impacts of sediment deposition and erosion on flow velocity by using dynamic mesh deformation to capture the movement of the deposited bed and its morphology. Further, three sediment classes, two suspended and one bedload sediment, can be modelled along with some bed stabilization and consolidation effects during deposition and erosion, respectively. The functionality of the overall model in modelling sewer sediment deposition and erosion is promising, although the validation of a large magnitude sediment erosion event has been limited by the availability of granular data in existing case studies.

show abstract

Impact of water management practice scenarios on wastewater flow and contaminant concentration

Cited by 32 publications

References 26 publications

Sustainability Assessment of Asset Management Decisions for Wastewater Infrastructure Systems—Development of a System Dynamic Model

Sustainability Assessment of Asset Management Decisions for Wastewater Infrastructure Systems—Development of a System Dynamic Model

Simulation of Infrastructure Options for Urban Water Management in Two Urban Catchments in Bogotá, Colombia

SewerSedFoam: A Model for Free Surface Flow, Sediment Transport, and Deposited Bed Morphology in Sewers

Contact Info

Product

Resources

About