La Hoja de Ruta Hacia una Empresa de Agua y Saneamiento Urbano con Bajas Emisiones de Carbono ofrece a los gestores de empresas de agua y saneamiento un enfoque para dar respuesta a las dificultades más apremiantes a las que se enfrentan, al tiempo que reducen las emisiones de carbono con medidas que, o bien generan un rendimiento de la inversión mediante el ahorro de energía o agua, o bien se corresponden con inversiones previstas como parte del plan de gestión de activos destinado a mantener o mejorar sus servicios. Las empresas de agua y saneamiento que adoptan este enfoque contribuyen a un futuro neutro en carbono pues promueven un cambio de mentalidad, no solo en la gestión de los recursos hídricos urbanos, sino también inspirando a las demás empresas de las ciudades al compartir los riesgos y la urgencia de actuar para evitar que se agraven los efectos del cambio climático, de los que las empresas de agua y saneamiento son unas de las primeras víctimas: escasez, inundaciones y deterioro de la calidad del agua. (Roadmap in Spanish)
IWA Search Theme: Water Utility Management
National Reference Based on WaCCliM Roadmap for Wastewater Utilities Towards Carbon Neutrality in Thailand
The National Reference Based on WaCCliM Roadmap for Water and Wastewater Utilities (WWUs) Towards Carbon Neutrality in Thailand presents utility managers with an approach to address their most pressing challenges, while reducing carbon emissions through measures that either have a return on investment through energy or water savings, or that correspond to planned investments as part of the asset management plan to maintain or improve their services.
Calculator Tool for Determining Greenhouse Gas Emissions for Biosolids Processing and End Use
A greenhouse gas (GHG) calculator tool (Biosolids Emissions Assessment Model, BEAM) was developed for the Canadian Council of Ministers of the Environment to allow municipalities to estimate GHG emissions from biosolids management. The tool was developed using data from peer-reviewed literature and municipalities. GHG emissions from biosolids processing through final end use/disposal were modeled. Emissions from nine existing programs in Canada were estimated using the model. The program that involved dewatering followed by combustion resulted in the highest GHG emissions (Mg CO2e 100 Mg-1 biosolids (dry wt.). The programs that had digestion followed by land application resulted in the lowest emissions (-26 and -23 Mg CO2 e100 Mg-1 biosolids (drywt.). Transportation had relatively minor effects on overall emissions. The greatest areas of uncertainty in the model include N2O emissions from land application and biosolids processing. The model suggests that targeted use of biosolids and optimizing processes to avoid CH4 and N2O emissions can result in significant GHG savings.
How Guanajuato’s Water and Wastewater Utilities are tackling Climate Change through Efficiency Optimization and Renewable Energy Production
In San Francisco del Rincón, two utility companies, SITRATA (Servicio de Tratamiento
y Deposición de Aguas Residuales) and SAPAF (Sistema de Agua Potable y
Alcantarillado de San Francisco), are collaborating on projects to improve their
services and lower their greenhouse gas (GHG) emissions. SITRATA manages
wastewater, while SAPAF is responsible for drinking water and sewage. With
guidance from the WaCCliM project, both utilities have undertaken a strategizing and
implementation process similar to that proposed in the “WaCCliM Roadmap to a Low-
Carbon Urban Water Utility”.
As a result, SAPAF have increased wastewater treatment coverage from 48% to 81%
and improved the energy efficiency of their pumping stations. The magnitude of the
increase in treatment coverage was by far the biggest achievement in GHG reduction.
How Madaba’s Water and Wastewater Utility is finding innovative Solutions to operational Burdens while reducing Carbon Emissions
In Madaba, the Miyahuna Water Company conducted a study to determine and
address greenhouse gas (GHG) emissions from its operations. Miyahuna operates
both water and wastewater systems in the city. The GHG assessment was conducted
using the Energy Performance and Carbon Emissions Assessment and Monitoring
(ECAM) Tool. This highlighted that 90% of energy consumption is linked to the
extraction of drinking water.
In order to decrease the utility’s carbon footprint, several GHG reduction measures
were evaluated. However, some are difficult to implement due to financial constraints.
The most feasible option was the improvement of the pumping system. This would
reduce annual electricity consumption by 35–50%.
How Chiang Mai’s Wastewater Utility is building Capacity on sustainable and innovative Solutions to reduce its Carbon Footprint
In the city of Chiang Mai, the WaCCliM project supports the Wastewater Management
Authority (WMA) in assessing opportunities to reduce its carbon footprint. A baseline
study identified the leaks of untreated wastewater, caused by fractured pipes in the
wastewater collection system, as the main source of greenhouse gas (GHG) emissions
in Chiang Mai. A large amount of untreated wastewater is flowing directly into the
public canal. Because of this, the city is producing significant amounts of methane
(CH4) and nitrous oxide (N2O), both gases with a larger global warming potential than
carbon dioxide (CO2). The emissions from direct discharge of untreated wastewater
account for 579,900 kg CO2 per year in the city.
The cooperation between WaCCliM and the WMA in Thailand has raised the
local awareness for the challenges in the wastewater sector and the need for
improvements in the urban water management in order to achieve resilient water
utilities. Therefore, knowledge transfer and capacity building are necessary for longterm
success and continuous progress.
A model-based approach for reducing energy consumption and GHG emissions of drinking water transmission systems: a WaCCliM Project Case Study
The Water and Wastewater Companies for Climate Mitigation (WaCCliM) project aims to improve the efficiency of water and wastewater companies in Mexico, Peru, Thailand, and Jordan, reduce their greenhouse gas (GHG) emissions, and improve the carbon balance of the water sector, while maintaining and/or improving service levels. As part of the project, hydraulic modelling software was used to simulate the Cusco, Peru drinking water transmission system and evaluate various scenarios (water loss reduction, pump replacement, and system reconfiguration) and their energy impacts. Results showed the transmission system’s pumping energy could be reduced up to 40 percent depending on the scenario. A holistic view on the total urban water cycle has also helped to identify that a combined effort to conserve water at the end user level, reduce water loss, reuse water, and rainwater harvesting will ultimately make the biggest impact on the transmission system’s energy consumption and GHG emissions, and lead to the most sustainable and resilient urban water management for SEDACUSCO and the City. This study has also demonstrated that water distribution system models can play an invaluable role in water utility climate change mitigation and adaptation planning.
Effective Utility Management – A Primer for Water and Wastewater Utilities
The Effective Utility Management: A Primer for Water and Wastewater Utilities (“Primer”) is designed to help water and wastewater utility managers make informed decisions and practical, systematic changes to achieve excellence in utility performance in the face of everyday challenges and long-term needs for the utility and the community it serves. This document distills the expertise and experience of utility leaders into a framework intended to help utilities identify and address their most pressing needs through an incremental, continual improvement management approach.
East Asia and Pacific Wastewater to Energy Processes: a Technical Note for Utility Managers in EAP countries
The objective of this technical note is to inform utility managers and technical decision makers in East Asian countries about appropriate technologies available for wastewater treatment with energy recovery processes.
ADVANCED CONTROL OF A WATER SUPPLY SYSTEM: A CASE STUDY
In this paper, a case study of the implementation of advanced control software is presented, to control both the production flow, using an adaptive demand forecasting model, and the pump pressure by applying dynamic pressure control.