Livros e capítulos de livros_ESAS
Permanent URI for this collection
Browse
Browsing Livros e capítulos de livros_ESAS by Subject "Água residual"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
- Water management toward regenerative wineriesPublication . Oliveira, Margarida; Saraiva, Artur; Lambri, M.; Rochard, J.; Fragoso, R.; Romanini, E.; Hipólito, P.; Ettore, C.; Duarte, ElizabethWine producers are now fully aware of the water-energy nexus, given the challenges created by climate change. By identifying potential environmental impacts of the wine industry, related to water and fossil energy use, wineries are taking action to improve their performance. This chapter reviews a set of technologies and strategies that can lead wineries to implement a regenerative approach, minimizing resources, recovering value from wastewater/waste, and replacing fossil energy with renewable sources. The approach is illustrated by presenting four case studies, located in three Mediterranean countries (France, Italy, and Portugal). The main conclusions are: (1) water and energy consumption ratios vary according to the wine type; (2) wastewater treatment systems tend to close the water cycle in countries facing severe water scarcity; and (3) the adoption of renewable energy in wineries is a reality today, but the adopted renewable energy depends on the region where it is located.
- Winery wastewater treatment : evaluation of the air micro-bubble bioreactor performancePublication . Oliveira, Margarida; Duarte, ElizabethThe wine sector has faced increasing pressure in order to fulfill the legal environmental requirements, maintaining a competitive position in a global market. The rising costs associated have stimulated the sector to seek sustainable management’s strategies, focussing on controlling the demand for water and improving its supply.Some EU Directives were implemented concerning water protection and management. These included in particular the Framework Directive in the field of water policy and environmental legislation about specific uses of water and discharges of substances.Several winery wastewater treatments are available, but the development of alternative technologies is essential to increase their efficiency and to decrease the investment and exploration costs.The main goals of the present paper are the comparison of different biological treatment systems, in particular fixed and suspended biomass, operating under aerobic conditions. Since the accurate design of the bioreactor is dependent on many operational parameters, aspects related to hydraulic retention time; oxygen mass transfer and contact time, energetic costs; sludge settling and production; response time during startup, flexibility and treated wastewater reuse, in crop irrigation, with the aim of closing the water cycle in the wine sector, will be addressed. A new treatment system will be presented as a case study, an air micro-bubble bioreactor (AMBB), that will highlight the advantages and constraints on its performance at bench-scale and full-scale, in order to fulfill the gaps associated with the implemented winery wastewater treatment systems. The data presented was collected during four years monitoring plan and used to develop a tool to support the selection of the best available technology. The present study will also contribute to the implementation of an integrated strategy for sustainable production in the wine sector, based on a modular and flexible technology that will facilitate compliance with environmental regulations and potential reuse for crop irrigation. This approach will contribute to the development of a bio-based economy in the wine sector that should be integrated in a Green Innovation Economy Cycle.