Published Version
Open DOI LinkAbstract
This paper presents and discusses the application of a novel energy balance scheme for assessing energy efficiency in wastewater systems. The energy balance is demonstrated with a Portuguese real-life case study, using mathematical modelling to estimate the different energy components and to compute two energy efficiency indices. The total inflow intrinsic energy can represent a significant amount (>95%) of the total energy used in systems mainly composed of gravity sewers. The total input energy is significantly (four-times) higher in the wet season than in the dry season, mostly due to undue inflows (e.g., direct rainfall and infiltration). The potential for energy recovery strongly depends on the available head and flow rate at the delivery point, being 0.01 kWh/m3 in the current case, with a project payback period of 4 years. The energy balance components and the respective energy efficiency indices strongly depend on the considered reference elevation. Thus, a unique regional reference elevation is recommended in the calculations.
Highlights
IntroductionEnergy efficiency in the water industry is often regarded as an operational issue focused mostly on pumping and treatment equipment or processes improvement, regarded as a management efficiency target to be achieved [1]
Infrastructures 2021, 6, 141. https://Energy efficiency in the water industry is often regarded as an operational issue focused mostly on pumping and treatment equipment or processes improvement, regarded as a management efficiency target to be achieved [1]
The current paper aims to apply and discuss the energy balance developed for wastewater systems at the micro-level, using mathematical simulations to describe the flow throughout the system
Read more 
Summary
Introduction
Energy efficiency in the water industry is often regarded as an operational issue focused mostly on pumping and treatment equipment or processes improvement, regarded as a management efficiency target to be achieved [1]. Climate change is challenging the water sector to optimize energy use and limit GHG emissions in the current daily operations. Aware of the need to reduce energy consumption and the associated costs, water utilities are currently looking for innovative ways to improve energy efficiency in their services by improving equipment efficiency, optimizing pump scheduling and changing the system layout [5], as well as recovering the excessive energy whenever feasible [6,7]. There remains a need to adapt and explore alternative approaches, mainly to wastewater and stormwater systems, to assess the inefficiencies associated with the sewer inflow and network layout
Methods
Results
Conclusion
Sign-in/Register to view highlights & summary Full Text
Open DOI Link Sign-in/Register to access full text options Topics from this Paper
Wastewater Systems- Energy Balance
- Energy Efficiency Indices
- Energy Balance Components
- Total Input Energy + Show 5 more
Create a personalized feed of these topics
Get StartedTalk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callSimilar Papers
A novel energy balance tailored for wastewater systems 
Relevant
Not Relevant
Urban Water Journal
May 28, 2022
RelevantNot Relevant Biotic and abiotic properties most closely associated with subtropical forest soil respiration differ in wet and dry seasons: A 10-year in situ study RelevantNot Relevant
- Agricultural and Forest Meteorology
- Oct 1, 2020
RelevantNot Relevant Seasonal Differences in Water-Use Sources of Impatiens hainanensis (Balsaminaceae), a Limestone-Endemic Plant Based on “Fissure-Soil” Habitat Function RelevantNot Relevant
- Sustainability
- Aug 4, 2021
RelevantNot Relevant Malnutrition in children with cystic fibrosis: the energy-balance equation. RelevantNot Relevant
- Journal of pediatric gastroenterology and nutrition
- Aug 1, 1997
RelevantNot Relevant The Impacts of Dry & Wet Seasons Induced Criteria Air Pollutants Concentrations in Old Port Harcourt Gra, Rivers State, Nigeria RelevantNot Relevant
- International Journal of Health Sciences and Research
- May 21, 2021
RelevantNot Relevant The impacts of water level fluctuations between wet and dry seasons on taxonomic and functional diversity of fish communities in the ecotone floodplain of Lake Caizi RelevantNot Relevant
- Journal of Lake Sciences
- Jan 1, 2019
RelevantNot Relevant Characteristics of three-dimensional fluorescence spectra and its correlation with water quality of surface water during dry and wet seasons in Lake Ebinur Watershed, Xinjiang RelevantNot Relevant
- Journal of Lake Sciences
- Mar 1, 2020
RelevantNot Relevant Spatio-Temporal Assessment of Water Quality in Douala IV Municipality, Cameroon RelevantNot Relevant
- Journal of Water Resource and Protection
- Dec 3, 2019
RelevantNot Relevant Soil heat flux and day time surface energy balance closure at astronomical observatory, Thiruvananthapuram, south Kerala RelevantNot Relevant
- Journal of Earth System Science
- Jun 1, 2014
RelevantNot Relevant The Impacts of Dry & Wet Seasons Induced Criteria Air Pollutants Concentrations in Old Port Harcourt Gra, Rivers State, Nigeria RelevantNot Relevant
- International Journal of Health Sciences and Research
- May 21, 2021
RelevantNot Relevant Combined effects of habitat and interspecific interaction define co-occurrence patterns of sympatric Galliformes RelevantNot Relevant
- Avian Research
- Jul 31, 2019
RelevantNot Relevant Increased birthweight after prenatal dietary supplementation of rural African women RelevantNot Relevant
- The American Journal of Clinical Nutrition
- Dec 1, 1987
RelevantNot Relevant Beef edible red offal condemnations in Kgatleng Slaughter Facilities, South eastern Botswana in a wet and dry season period RelevantNot Relevant
- International Journal of Livestock Production
- Nov 30, 2018
RelevantNot RelevantREAD MORE FROMInfrastructures
Sustainable Renovation of Public Buildings through Seismic–Energy Upgrading: Methodology and Application to an RC School Building 
Open AccessRelevantNot Relevant
Open Access- Infrastructures
- Nov 27, 2023
RelevantNot Relevant A Big Data System Architecture to Support the Monitoring of Paved Roads Open AccessRelevantNot Relevant
Open Access- Infrastructures
- Nov 24, 2023
RelevantNot Relevant Influence of Compaction Energy on the Mechanical Performance of Hot Mix Asphalt with a Reclaimed Asphalt Pavement (RAP) and Rejuvenating Additive Open AccessRelevantNot Relevant
Open Access- Infrastructures
- Nov 23, 2023
RelevantNot Relevant Comparing Macroscale and Microscale Walkability Indicators to Establish Pick-Up/Drop-Off Locations for a Microtransit Service in a Suburban Area Open AccessRelevantNot Relevant
Open Access- Infrastructures
- Nov 21, 2023
RelevantNot Relevant Transferring Research Innovations in Bridge Inspection Planning to Bridge Inspection Practice: A Qualitative Study Open AccessRelevantNot Relevant
Open Access- Infrastructures
- Nov 20, 2023
RelevantNot Relevant Evaluating the Ageing Sensitivity of the Asphalt Binder via Distinct Ageing Methods Open AccessRelevantNot Relevant
Open Access- Infrastructures
- Nov 17, 2023
RelevantNot Relevant Data-Driven Condition Assessment and Life Cycle Analysis Methods for Dynamically and Fatigue-Loaded Railway Infrastructure Components RelevantNot Relevant
- Infrastructures
- Nov 13, 2023
RelevantNot Relevant Biomaterials in Concrete for Engineering Applications: A Bibliometric Review Open AccessRelevantNot Relevant
Open Access- Infrastructures
- Nov 10, 2023
RelevantNot Relevant Rheological and Aging Characteristics of Polymer-Modified Asphalt with the Addition of Sulfur Open AccessRelevantNot Relevant
Open Access- Infrastructures
- Nov 9, 2023
RelevantNot Relevant Roles of Wireless Networks in Bridging the Rural Smart Infrastructural Divide Open AccessRelevantNot Relevant
Open Access- Infrastructures
- Nov 8, 2023
RelevantNot Relevant