Evaluación de la remoción de Escherichia Coli presente en dos calidades de aguas sintéticas tratadas con filtros caseros
Dávila Estupiñán, Andreína
MetadatosMostrar el registro completo del ítem
Introduction: Water is essential for life and all people must have a satisfactory, sufficient, safe and accessible supply; Likewise, it must comply with the microbiological and organoleptic characteristics established in the regulations, including the total absence of Escherichia coli, in order to be suitable for human consumption; However, a large percentage of especially rural areas do not have good quality water and have diseases for this reason, so resorting to new technologies such as household filters that help purify water, provides an alternative with tangible benefits for health. Objective: To evaluate the removal of Escherichia coli from two synthetic water qualities of EKOFIL and EKOFIL PLUS homemade filters. Methodology: The process for water potabilization was developed at the Santiago de Cali University and the Departmental Public Health Laboratory. Synthetic waters inoculated with the Escherichia coli strain ATCC 25922 at a concentration of 102 and 103 were used; and they were evaluated by the membrane filtration microbiological method. The proposed design was an experimental type study of a factor. For the evaluation of the removal of the homemade filters, an Anova was used. Results: For the two evaluated synthetic water qualities (102 and 103 CFU/mL) there were no significant statistical differences for the removal of Escherichia coli compared to filtration rates. However, the EKOFIL PLUS filters achieved a removal of the microorganism from 2.2 Log in the concentration of 102 CFU/mL and 3.0 Log for 103 CFU/mL, which can be attributed to the presence of the column with activated carbon especially with filtration rate of 2 h / L and 1 h / L respectively. Conclusions: Although the filters showed removal of Escherichia coli in the water after filtration, it fails to meet the criterion recommended by Colombian regulations, which is 0 CFU/100mL, regarding this microbiological indicator in some of the filtration systems and there was no clear trend.