Presentations now available - see below.
Wastewater Treatment Plants (WWTPs) account for a significant proportion of energy use in Ireland and globally. As the focus on the contribution of energy production to climate change increases, the need to identify opportunities for energy saving, energy generation and supporting the wider energy system becomes increasingly important. This webinar highlights the opportunities for wastewater treatment plant to play a role in the energy transition through reducing their energy requirements, supporting the electricity system through demand response and showcasing the role of data analytics to support decision making. Aspects such as operational costs and ensuring environmental standards are core components of the integrated approach to these energy opportunities.
Date: Thursday 15th April
Professor Eoin Casey, Head of UCD School of Chemicals & Bioprocess Engineering, UCD
Presentations & Abstracts
Climate, land-use and wastewater treatment - Eoghan Clifford, NUIG
Wastewater infrastructure plays a central role protecting the environment, human health and ensuring economic growth. Such infrastructure is facing challenges including the need to meet demographic and economic growth while mitigating the impacts of climate change and meeting regulatory requirements and net zero-carbon targets. This presentation outlines these key issues and discusses, using case-studies, how rainfall data can be used to model future flows in wastewater treatment facilities.
A WWTP can interact with the energy grid in two ways; (i) providing flexibility due to redundancy in process and regulating the electromechanical equipment, (ii) renewable energy production (heat recovery, biogas, incineration, micro-hydropower, power to methane). In the last two decades, the wastewater treatment sector has been changing as a result of sustainability drivers on resource recovery and energy efficiency. Today, it is even possible to operate WWTPs with energy neutrality and to recover several products (water, nutrients, biopolymers and biogas) out of sewage. This has been achieved with the deployment of new processes and technologies which will be discussed in this talk.
Abstract: The potential of waste water treatment plants (WWTP) to provide demand response (DR) has been shown by several case studies to date. So far, studies have assumed power system operation and energy prices as a prerequisite for DR action, which distorts results for the DR potential. In order to correct for this, we introduce an integrated modelling approach, which, for the first time, takes the activated sludge process into account for optimising the system operation.
The digital twin understands and interprets demand, flow and performance, so it is possible to consider these insights to mitigate risk, maintain discharge standards, minimize costs and ensure the most efficient approach for wastewater management