Search results for "sanitari"
showing 10 items of 639 documents
Aerobic granular sludge reactor treating anaerobically pretreated brewery wastewater at different loading rates
2018
Small and medium breweries discharging to municipal sewers without treatment generate significant loads with typical concentrations reported by Valta et al. (2014) as 2-6 g COD L-1, 25-80 mg TN L-1, 10-50 mg TP L-1, with pH between 4.5 and 12. Treatment of the high-strength wastewater requires specialized low footprint processes, such as aerobic granular sludge (AGS), capable of high-rate degradation, as well as simultaneous nitrogen and phosphorous removal (Wang et al., 2007). The objective of this study was to evaluate the start-up period of AGS receiving brewery wastewater after initial anaerobic pretreatment.
Interpreting and modelling field data for wastewater dispersion into sea through dimensional analysis
2008
Role of modeling uncertainty in the estimation of climate and socioeconomic impact on river water quality. J. of Water Resources Planning and Managem…
2012
Climate is one of the most important factors leading to changes in the hydrologic and environmental characteristics of river basins. When considering water quality, the natural factors should be weighed against anthropogenic factors (such as urbanization, increased population, and higher water demand) that may increase or decrease the effect of climatic modifications. Any prediction of future climatic and anthropogenic scenarios is affected by uncertainty and the modelling tools that are used for evaluating their impact on receiving water bodies. The present paper is aimed at investigating the complexity of such analyses and the uncertainty related to future impact predictions based on limi…
A mathematical model for wastewater modification processes assessment in a stabilization reservoir
2012
The paper presents a mathematical model for the simulation of the ecological status of a wastewater stabilization reservoir (WSR). WSRs are hypertrophic aquatic systems devoted to storage of water resources in warm countries where shortage conditions have quite often to be faced. Several factors that affect the stabilization reservoir effluent quality were taken into account: hydraulics and hydrology, solar radiation, atmospheric reaeration, algae, zooplankton, organic matter, pathogen bacteria, and sediment-water interaction. The model quantifies the specific influence of each factor on effluent quality, evaluating the correlation between the different considered factors. State variables i…
Roadmapping the Transition to Water Resource Recovery Facilities: The Two Demonstration Case Studies of Corleone and Marineo (Italy)
2022
The current exploitation of freshwater, as well as the significant increase in sewage sludge production from wastewater treatment plants (WWTPs), represent nowadays a critical issue for the implementation of sustainable development consistent with the circular economy concept. There is an urgent need to rethink the concept of WWTPs from the conventional approach consisting in pollutant removal plants to water resource recovery facilities (WRRFs). The aim of this paper is to provide an overview of the demonstration case studies at the Marineo and Corleone WRRFs in Sicily (IT), with the final aim showing the effectiveness of the resources recovery systems, as well as the importance of plant o…
Zeolites for the nutrient recovery from wastewater
2023
To meet the growing food demand of the world population, excessive use of chemical fertilizers is occurring to improve soil fertility and crop production. The excessive use of chemical fertilizers is not economically and environmentally sustainable. Indeed, from one hand, due to the increasing demand of fertilizers is rising their costs whereas, on the other hand, the accumulation of fertilizers in wastewaters is altering the homeostasis of the ecosystems thus causing serious damages to human health [1,2]. The recovery of nutrients, such as nitrogen (N) and phosphorus (P), from wastewaters is a good option to counteract both economic and environmental issues raised by the excessive use of f…
Condizioni igienico-sanitarie delle acque costiere della provincia di Palermo
1997
Didáctica de las ciencias experimentales y sociales
2004
Resumen basado en la publicación ; Este artículo ha sido concebido como contribución a la Década de la Educación para el desarrollo sostenible, instituida por Naciones Unidas para el período 2005-2014 En este artículo se delibera sobre que entre los contenidos curriculares escolares se encuentran temas de anatomía y fisiología del cuerpo humano donde se suelen tratar cuestiones de higiene y prevención de la enfermedad, pero ¿es esto educación para la salud?. De la misma forma, en los programas de conocimiento del medio y de ciencias de la naturaleza y biología se contemplan aspectos relativos al medio, los ecosistemas, las relaciones entre sus componentes, el equilibrio existente, y se estu…
Development of an aerobic digestion model for the assessment of greenhouse gases production (AeDMG1): Calibration and validation
2015
The increasing interest in greenhouse gas emissions from WWTPs has been leading to new tools for their designing and managing. The activated sludge models have been modified in order to consider on – site emissions from nitrification and denitrification, in particular. The biological nitrogen removal processes have been mainly assessing due to nitrous oxide (N2O) production as intermediate. The IPCC suggests that N2O contributes to climate change because it has a global warming potential 298-fold stronger than carbon dioxide. Even if the mathematical modelling is wide regarding the activated sludge models for greenhouse gases, a model for aerobic digestion is still not available. In this pa…
El adolescente con cáncer: Un desafío para el sistema sanitario
2013
El diagnóstico de cáncer en el adolescente supone un auténtico mazazo. En este artículo, se describen los tipos de cáncer más prevalentes en estas edades, los elementos de control del cáncer, los efectos sobre el paciente adolescente y los desafíos que suponen para el sistema sanitario su asistencia integral. Las fundaciones existentes juegan un papel fundamental, procurando que el adolescente con cáncer nunca pierda el espíritu de lucha.