Producción Científica Profesorado

Chlorine disinfection of Pseudomonas aeruginosa, total coliforms, Escherichia coli and Enterococcus faecalis: revisiting reclaimed water regulations



Coronel Olivares, Claudia

2010

Coronel-Olivares, C., Reyes-Gomez, L. M., Hernandez-Munoz, A., Martinez-Falcon, A. P., Vazquez-Rodriguez, G. A., & Iturbe, U. (2011). Chlorine disinfection of Pseudomonas aeruginosa, total coliforms, Escherichia coli and Enterococcus faecalis: revisiting reclaimed water regulations. Water Science & Technology, 64(11), 2151-2157.


Abstract


Pathogenic organisms can be transmitted orally through drinking water or through skin and mucosae by both direct and indirect contact, and their presence in water thus has a negative impact on public health. In wastewater treatment plants (WWTP), water is disinfected to inactivate pathogens. The quantification of several microbial indicators in aquatic systems is required to estimate the biological quality of such systems. So far, coliform bacteria have been used as traditional indicators worldwide. This study has assessed the resistance of total coliforms, Escherichia coli, Pseudomonas aeruginosa and Enterococcus faecalis to three dosages of sodium hypochlorite (NaClO) at two exposure times. The bacteria were isolated from secondary effluents of a WWTP located in Hidalgo, Mexico. The results show that the number of colony-forming units of all studied bacterial types decreased when both the NaClO concentration and exposure times increased. However, they were not eliminated. The inclusion of the species Pseudomonas aeruginosa in regulations for treated wastewater quality as a new indicator is highly recommended due to its importance as an opportunistic pathogen. The detection of this species along with the traditional organisms could be particulary significant for reclaimed water to be used with direct human contact



Producto de Investigación




Artículos relacionados

Modélisation de la cinétique de biodégradation de phénol par granules aérobies

DISEÑO DE UNA PLANTA DE TRATAMIENTO DE AGUAS RESIDUALES BASADO EN EL PRINCIPIO DE CONSORCIOS MICROBI...

Manganese accumulation in plants of the mining zone of Hidalgo, Mexico

3D reconstruction of Artificially Structured Microbial Consortia (ASMC) by image analysis

Model-based design of different fedbatch strategies for phenol degradation in acclimatized activated...

Mathematical modeling of diffusion regulated Quorum sensing in Artificially Structured Microbial Con...

Two-step modeling of the biodegradation of phenol by an acclimated activated sludge

Degradación física del almidón de cebada (Hordeum sativun Jess). Correlación entre la gelatinización...

MODELACIÓN MATEMÁTICA DE LA CINÉTICA DE CATALIZADORES PARA LA PRODUCCION DE DIESEL DE ULTRA BAJO AZU...

Procedures in Ready Biodegradability Testing: Effects of the Inoculation and the Monitored Parameter