Evaluación de eco-eficiencia de tecnologías de tratamiento de aguas residuales domésticas en Chile

Abstract

Evaluación de eco-eficiencia de tecnologías de tratamiento de aguas residuales domésticas en Chile Eco-efficiency assessment of domestic wastewater treatment technologies used in Chile

New developments on vermifiltration as a bio-ecological wastewater treatment technology: Mechanism, application, performance, modelling, optimization, and sustainability

“…Regarding vermifiltration, it has been demonstrated that vermifiltration technology has a minimal dependence on fossil fuels, thereby contributing to the conservation of non-renewable natural resources. Researches of Passteni et al [ 112 ] and Lourenço and Nunes [ 113 ] on this matter has shown significant variations in fossil fuel consumption between different wastewater treatment technologies. These variations include quantities of up to 0.04 kg/kg of BOD 5 removed for Activated Sludge Process (ASP), up to 0.03 kg/kg of BOD 5 removed for Aerated Lagoons (ALs), and 0 kg/kg of BOD 5 removed for Vermifiltration.…”

“…ALs also show higher environmental impacts than VF. Therefore, VF is the best option in terms of environmental sustainability for domestic wastewater treatment [ 112 ]. Preserving the quality of water, air, soil and ecosystems: inadequate treatment of domestic wastewater can harm water quality and the aquatic ecosystem due to the presence of pollutants such as pathogens, heavy metals, and emerging contaminants.…”

“…ALs also show higher environmental impacts than VF. Therefore, VF is the best option in terms of environmental sustainability for domestic wastewater treatment [ 112 ].…”

“…Maintenance expenses are also lower compared to conventional WWTPs. VF technology boasts longevity, lasting up to 3–8 months for low-strength domestic sewage chemical requirements are lower, reducing costs compared to other methods [ 112 ]. Table 6 provides a comprehensive overview of both capital costs and operational costs for each wastewater treatment method.…”

“… DIMENSIONS FEATURES REFERENCES ENVIRONMENTAL No consumption of any fossil fuel during all the stage of the vermifiltration process. [ 112 ] Protection the air quality, especially while treating the domestic sewage. [ 39 ] Nutrient recovery - organic fertilizer.…”