BONANNI Pablo Sebastian
congresos y reuniones científicas
RESIDENTIAL WASTEWATER TREATMENT IN BIOELECTROCHEMICAL WETLANDS
GIUNTA RAMOS, V.; BONANNI P. SEBASTIAN; BUSALMEN JUAN PABLO
Los Cocos, Cordoba
Congreso; Congreso de la Sociedad Argentina de Microbiologia General (Samige); 2022
Decentralized wastewater treatment appears as the better option for securing provision of sanitation services to the increasing population of low- and middle-income countries. Within available technologies, constructed wetlands have demonstrated to be efficient in terms of functionality and costs, but are intensive in the use of land, which had limited their application. Bioelectrochemical wetlands are an evolution of traditional constructed wetland that making use of biocompatible electricity conducting fillings materials, introduce a redox potential vias at the systems interior to enrich an electroactive microbial population. This population has demonstrated to be much more efficient in terms of water depuration capacity than that typically grown on traditional non-conductive filling and optimize the performance of wetlands as treatment systems, which are now less intensive in land use, opening the avenue for their expansion as a real technological alternative to cover population needs.Our group has developed a functional model of residential scale bioelectrochemical wetlands that has been installed in a number of family houses in Mar del Plata city aiming at validating their effectiveness and identifying their weaknesses, in order to complete the technology development process at TRL9 (technology readiness level 9). In this work we show that after one year of continuous unattended operation bioelectrochemical wetlands effectively treat residential wastewater, producing an effluent that complies with local regulations in terms of chemical oxygen demand and nutrients dosages, thus validating their robust functionality. As a point to take into account, the accumulation of suspended solids in consequence of the very high organic load in the influent water, indicates that devises may require yearly services.