For a specific case, the effects of cold recovery from drinking water were analyzed on three decisive criteria: the effect on the GHG emissions, the financial implications, and the effect on the microbiological drinking water quality. It is shown that cold recovery from drinking water results in a 90% reduction of GHG emissions, and that it has a positive financial business case: Total Cost of Ownership reduced with 17%. The microbial drinking water quality is not affected, but biofilm formation in the drinking water pipes increased after cold recovery.
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Future-oriented Technologies and Concepts for an Energy-efficient and Resource-saving Water Management
This brochure gives an overview on joint research projects of the German Federal Ministry of Education and Research, which initiated the funding measure “Future-oriented Technologies
and Concepts for an Energy-efficient and Resource-saving Water Management” in 2012. Results show that the water-energy-nexus gives the crucial incentive for new energy and resource efficient solutions.
Roadmap Figures
Download these figures and text elements from the ‘Roadmap to a Low-Carbon Urban Water Utility’ and feel free to use them in internal and external communications, crediting WaCCliM 2018.
LUCIDPIPE POWER SYSTEM CASE STUDY, Portland, Oregon
This resource is included, even though it refers to a single technology, as it provides interesting insights on the financing model. This technology is available from other vendors.
Factsheet – Microturbines installed in water pipes allow converting the hydraulic potential energy loss resulting from the hydraulic design and the topography into electrical energy.
Pressure-driven demand and leakage simulation for water distribution networks
A novel steady-state network simulation model that fully integrates, into a classical hydraulic representation, pressure-driven demand and leakage at the pipe level is developed and presented here. After presenting a brief literature review about leakage modelling, the importance of a more realistic simulation model allowing for leakage analysis is demonstrated. Then, the algorithm is tested from a numerical standpoint and subjected to a convergence analysis. These analyses are performed on a case study involving two networks derived from real systems. Experimentally observed convergence/error statistics demonstrate the high robustness of the proposed pressure-driven demand and leakage simulation model.
Resource recovery from wastewater in Austria: wastewater treatment plants as regional energy cells
This paper describes the estimation of total energy consumption and generation and the related degree of energetic self-sufficiency at certain Austrian WWTPs. Preliminary results regarding the development of a tool for evaluating and optimising on-site and externally supplied use of energy are presented. Finally, the possibilities of energy supply for neighbouring spatial structures are discussed briefly and conclusions drawn about the potential to develop WWTPs as regional energy cells.
Guia para la optimización energética en sistemas de tratamiento de agua (Guideline for energy optimization in water treatment systems)
The document is a guideline and tool for water utilities to evaluate, identify and implement measures for reducing the energy consumption in their treatment systems.
Urban water networks as an alternative source for district heating and emergency heat-wave cooling
Three emergency cold recovery techniques are presented as a response to heat-waves: subway station cooling, ice production for individual cooling, and “heat-wave shelter” cooling in association with pavement-watering. The cold generation potential of each approach is assessed with a special consideration for mains water temperature sanitary limitations. Finally, technical obstacles and perspectives are discussed.
Recycling and Reuse of Treated Wastewater in Urban India
The document focuses on identifying the economic, financial and environmental benefits of wastewater recycling from the perspective of public spending. Also provides information on the evolution and current practices of wastewater recycling internationally and the international and national regulatory and policy frameworks that guide wastewater recycling. It presents possible strategies for city and state planners and policy makers to initiate the discourse on wastewater recycling and reuse.
Understanding nitrous oxide production by ammonia oxidizing bacteria in an enriched nitrifying sludge
This thesis aims to experimentally assess and mathematically model the effect of several key operational parameters on N2O production by AOB as well as the contributions of different N2O production pathways to total N2O emission.