Greywater reuse concept design in combination with solar thermal systems applied to a touristic facilityUšaj, Ivo (Avtor) Atanasova, Nataša (Mentor) De Simone, Marilena (Komentor) civil engineeringmaster thesisgreywater treatmentgreywater reusemembrane bioreactorconstructed wetlandsolar thermal systemsolar collectorsolar fractionTourist facilities have a significant impact on the ecological footprint, mainly due to the excessive use of water and energy resources. The thesis provides the design of measures aimed at reducing drinking water and energy consumption in a real case study, Hotel Salinera (Slovenia), along with the assessment of their feasibility. It addresses the following measures: greywater separation and treatment with a membrane bioreactor (MBR), greywater separation and treatment with a constructed wetland (CW), and the design and evaluation of a solar thermal system to reduce energy consumption in the hotel. Both technologies for greywater treatment and reuse have similar investment costs. However, the operating costs of the MBR are much higher compared to the CW. While the investment for the CW is returned in less than 8 years, this period is significantly longer for the MBR, approximately 30 years. Both measures reduce the drinking water consumption by estimated 45%. The implementation of the solar thermal system takes into account the limitations due to the limited available areas. The only viable option is the installation of a smaller number of solar collectors, which can provide a 26% reduction in the consumption of the classic energy system. The economic analysis of the solar thermal system confirms the almost immediate return on investment. The economic analysis does not take into account additional benefits such as resilience, lower consumption of resources, lower environmental pollution, and in the case of the CW also additional cooling and additional green space (biodiversity).[I. Ušaj]20232023-09-30 07:45:32Magistrsko delo/naloga151149sl