Plenary 7: Emerging Issues and New Technologies 2 - Approaches and Techniques
8:50am - 9:10am
Future of Food Waste Disposers: what is the potential for energy recovery at wastewater treatment plants?
University of Sheffield, United Kingdom
Foodwaste disposers provide a disposal route for consumers that could contribute to circular economy opportunities. This eliminates handling of foodwaste and makes use of existing anaerobic digestion facilities at many treatment works. During in-sewer transport organic matter is utilised by heterotrophic microorganisms. The amount of organic matter that will be turned into CO2 during in-sewer transport needs to be estimated to understand the energy recovery potential. A mass balance can be used to estimate how much anaerobic digestion can be boosted by foodwaste. The presented experiments determine the COD of food waste and the rate of in-sewer degredation.
9:10am - 9:30am
Experimental evaluation of the storm water control performance of a modular blue roof in Mediterranean climate.
University of Catania, Italy
The paper discusses results of the long-term monitoring of a full-scale pilot installation of a modular blue roof (BR) for the control of the runoff from the roof terrace of a building in the campus of the University of Catania (Italy). The BR was installed in one catchment of the rooftop while another symmetrical catchment was left unmodified and monitored to allow comparison. Results of the analysis have shown average 54% retention efficiency and 72% detention efficiency of the BR. The BR always overperformed the conventional roof, with mean 34% runoff reduction and mean 60% flow peak attenuation.
9:30am - 9:50am
From household inflows to the WRRF: modelling thermal-hydraulic dynamics with a hybrid framework
Eawag, The Swiss Federal Institute of Aquatic Science and Technology, Switzerland
We present a framework based on WaterHub, MINUHET and SWMM-HEAT that enables thermal-hydraulic simulations from household inflows to the wastewater resource recovery facility. We validate the framework with real-world data across seasons and precipitation events. In addition, we analyse how decentralized heat recovery devices impact wastewater temperatures at the WRRF during precipitation events.
9:50am - 10:10am
Automatic generation and design of realistic sewer networks based on open access data
TU Dresden, Germany
Data for the proper development of urban drainage models is not always available or accessible. To overcome this, several approaches have focused on generating virtual UDNs with similar properties as real systems. However, they are not adequate to analyze local processes (e.g. urban flooding), since they generate systems with generic layouts or properties. In this context, the present work focuses on developing a tool to automatically generate and design more realistic sewer networks based on open access data. Results suggest that the tool is able to generate drainage systems with realistic hydraulic and spatial characteristics