Browsing by Author "Perez Vidal, Andrea"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item Long-term evaluation of the performance of four point-of-use water filters(Elsevier Ltd, 2016-04-12) Perez Vidal, Andrea; Diaz Gomez, Jaime; Castellanos Rozo, Jose; Usaquen Perilla, Olga LucíaDespite technological advances water supply quality and poor access to safe water remain a major problem in developing countries, especially in rural areas. Point-of-use (POU) water treatment has been shown to be a viable option to produce safe drinking water quality. The aim of this study was to evaluate, under laboratory conditions over 14 months, the performance of four household filtration systems: membrane filter (MF), one-candle ceramic filter (1CCF), two-candle ceramic filter (2CCF) and pot ceramic filter (PCF). The evaluation was made using spiked water having the required concentrations of turbidity, Escherichia coli and Total Dissolved Solids (TDS). The results show that all systems have high removal efficiencies for turbidity (98–99%), and E. coli 4–5 Log Reduction Value (LRV). The poorest efficiency was for TDS (9–18%). The MF and the CCF displayed no significant difference in efficiencies for these parameters. The PCF had less significant differences for turbidity removal than the other systems. The average filtration rate for all systems decreased during the operation time. The CPF showed the major potential to be used in rural communities mainly for its low operational level and maintenance requirements as well as its local craftsmanship. It was observed that the efficiency of the systems is highly sensitive to cleaning and maintenance activities and therefore, the system sustainability will depend considerably on the training and education of the potential users.Item Propuesta para la gestión de residuos sólidos en la secretaría de cultura del centro cultural de Cali(Universidad Santiago de Cali, 2020) Rodriguez Villada, Jaime Alexis; Perez Vidal, AndreaThis research addresses the issues related to the Comprehensive Solid Waste Management Plan (PGIRS) implemented in the Ministry of Culture of Santiago de Cali, specifically regarding the challenges presented by the entity in the separation at the source and the good practices in the use of waste generated by officials and users who visit the Cultural Center. The objective of this article is to contribute to the current state of solid waste management in the Ministry of Culture of Santiago de Cali, proposing improvement actions that allow improving the control of collection points that are distributed in that public space. It starts with identifying the different activities that are carried out within the Secretariat by means of data obtained such as: source separation, final disposal and statistical observation through the average perception of officials and visiting users. In the results, it was found that the Secretariat generates approximately 14,907 kg per year of unusable solid waste and of which 31.2% is material with potential that can be exploited through recycling or reuse processes. In the perception, it is observed that 41% of the officials only sometimes use the ecological points and 47% of the users state that they do not do so due to lack of signage. The proposal is directed towards a philosophy of continuous improvement established in the PHVA cycle, accompanying what it has with new proposals that seek to correct the deficiencies found in the diagnosis, as well as to give correct compliance with the comprehensive Solid Waste Management Plan