Author(s): Sara Simona Cipolla; Marco Maglionico
Linked Author(s): Sara Simona Cipolla, Marco Maglionico
Keywords: Greywater recycling; Rainwater harvesting; SWMM; Water saving
Abstract: In the light of water shortages, frequently affecting many regions worldwide, domestic rainwater harvesting and greywater reuse systems represent an alternative source to provide non-potable water in buildings, reducing the water demand from mains water supply systems. This study fits this framework providing a methodology, based on a hydraulic/hydrological model developed by means of SWMM, which can be used to find the optimal design of system for rainwater/greywater storage and reuse. The model is able to take into consideration different catchments surfaces (impervious, gravel and green roofs), technical plant combinations, user’s habits, and climate data. Furthermore continuous simulation at different time steps can be performed. The proposed model has been implemented for a residential building located in Bologna (Italy). Continuous simulations were performed by using 12 years daily rainfall and air temperature data in conjunction with estimates of domestic water appliance usage to predict the long-term performance of different facilities combinations. The results of the simulations are graphs that shows water saving efficiency and wastewater reduction as a function of the tanks size. The final goal of this document was to create a software tool that allow estimating the long-term technical performance of rainwater/greywater systems to distribute more equally incentives and tax deductions.
Year: 2018