This webinar is part of a masterclass series organised by the IWA Climate Smart Utilities Initiative. The goal of the Initiative is to assist water, wastewater, and urban drainage companies in improving their climate resilience by adapting to a changing climate while contributing to significant and sustainable reduction of GHG emissions.
After a first masterclass providing a general overview on quantifying, modelling and mitigating process emissions and a second masterclass on nitrous oxide, a third class dedicated to methane emissions in wastewater treatment, the final class is a panel discussion on Climate Action.
This masterclass series organised by the IWA Climate Smart Utilities Initiative. The goal of the Initiative is to assist water, wastewater, and urban drainage companies in improving their climate resilience by adapting to a changing climate while contributing to significant and sustainable reduction of GHG emissions.
During this class, international experts in the field will present existing and recent approaches to quantify, monitor and mitigate N2O emissions. The class will bring participants up to speed with process emissions of nitrous oxide and methane from wastewater treatment – through presentations of key findings from a newly launched IWA publication and by sharing the experiences of progressive utilities around the world.
This masterclass series is organised by the IWA Climate Smart Utilities Initiative. The goal of the Initiative is to assist water, wastewater, and urban drainage companies in improving their climate resilience by adapting to a changing climate while contributing to significant and sustainable reduction of GHG emissions.
During this class, international experts in the field presented existing and recent approaches to quantify, monitor and mitigate methane emissions. The class brought participants up to speed with process emissions of methane from wastewater treatment – through presentations of key findings from a newly launched IWA publication and by sharing the experiences of progressive utilities around the world. This class was hosted and presented by editors and co-authors of the IWA publication “Quantifying and modelling of fugitive greenhouse gas emissions from urban water systems” along with special guest utility experience from Anette Wästlund, Sjöstad WWTP Karlstad.
ECAM empowers water and wastewater utility operators to assess their greenhouse gas emissions and energy consumption.
- Perfect for climate reporting needs
- Overview of system-wide greenhouse gas emissions
- IPCC-2019 compliant and open source
The race to net-zero emissions is on. Since the Paris Agreement of 2016, more than 70 countries, accounting for 76 percent of all greenhouse gas (GHG) emissions, have pledged to meet ambitious net-zero goals. Most have committed to a 45 percent cut in GHG emissions by 2030, and net zero by 2050. That’s a challenge for water utilities. Water and wastewater infrastructure is a major GHG contributor – making up approximately 2% of global GHG emissions, on par with the global shipping industry. Utilities are not just required to deliver on financial metrics. They must also meet their communities’ need for safe, affordable water and sanitation, and comply with regulatory requirements. Those imperatives don’t pause for emissions reduction. And they don’t have to. Utilities can reduce emissions quickly and affordably. With the right approaches and proven technologies, net zero is possible
La “Herramienta de Evaluación y Monitoreo del Desempeño Energético y Emisiones de Carbono” (ECAM) ofrece capacidades excepcionales para evaluar las emisiones de gases de efecto invernadero (GEI) y el consumo de
energía en sistemas de agua y saneamiento. Obtenga nuevas perspectivas al identificar áreas de oportunidad para reducir las emisiones de GEI, aumentar el ahorro de energía y mejorar la eficiencia general para reducir costos.
Puede encontrar más información sobre la ECAM 3.0 en la hoja informativa.
Esta Guía facilita la toma de decisiones preliminares sobre el proceso más apropiado para tratar las aguas residuales municipales. Esta Guía de selección de procesos se diseñó para respaldar la evaluación de proyectos de saneamiento desde un enfoque de mitigación del cambio climático que propicie el desarrollo sostenible, aunque sin descuidar los criterios de cumplimiento con las regulaciones ambientales mexicanas y la viabilidad técnica o económica.
Este folleto descriptivo y su libro complementario MS Excel © son herramientas de apoyo para evaluar las posibilidades de los trenes de tratamiento en las plantas de tratamiento de aguas residuales municipales. Los procesos recomendados y sus combinaciones reducen las emisiones gaseosas al máximo y muestran la viabilidad técnico-económica.
This paper provides a review of the changing nature of the water–energy nexus in urban water supply systems (UWSSs) due to the primary long-term drivers of climate change, population growth and technological development from the ‘energy for water’ perspective. We identify both the physical changes in UWSSs, as well as the changes in the attributes of the system, both of which contribute to the changing nature of the water–energy nexus. We provide an overview of responses to this change in the water–energy nexus through the lens of four application areas, namely long-term planning, system design, system operation and system rehabilitation, based on the review of 52 papers
Microalgae can synthesise the ozone depleting pollutant and greenhouse gas nitrous oxide (N2O). Consequently, significant N2O emissions have been recorded during real wastewater treatment in high rate algal ponds (HRAPs). While data scarcity and variability prevent meaningful assessment, the magnitude reported (0.13–0.57% of the influent nitrogen load) is within the range reported by the Intergovernmental Panel on Climate Change (IPCC) for direct N2O emissions during centralised aerobic wastewater treatment (0.016–4.5% of the influent nitrogen load).
An assessment was performed for elucidating the possible impact of different aeration strategies on the carbon footprint of a full-scale
wastewater treatment plant. Using a calibrated model, the impact of different aeration strategies was simulated. The ammonia controller
tested showed its ability in ensuring effluent ammonia concentrations compliant with regulation along with significant savings on aeration
energy, compared to fixed oxygen set point (DOsp) control strategies. At the same time, nitrous oxide emissions increased due to accumulation of nitrification intermediates. Nevertheless, when coupled with the carbon dioxide emissions due to electrical energy consumption for aeration, the overall carbon footprint was only marginally affected. Using the local average CO2 emission factor, ammonia control slightly reduced the carbon footprint with respect to the scenario where DOsp was fixed at 2 mg·L1. Conversely, no significant change could be detected when compared against the scenarios where the DOsp was fixed. Overall, the actual impact of ammonia control on the carbon footprint compared to other aeration strategies was found to be strictly connected to the sources of energy employed, where the larger amount of low CO2-emitting energy is, the higher the relative increase in the carbon footprint will be.