The characterization of biosolids produced by the San Fernando wastewater treatment plant in Itagui, Antioquia, Colombia/Caracterizacion de biosolidos generados en la planta de tratamiento de agua residual San Fernando, Itagui (Antioquia, Colombia)

Objective This study was aimed at evaluating pertinent physicochemical and microbiological (bacteria and parasites) parameters regarding the biosolids produced by the San Fernando wastewater treatment plant (WWTP) in Itagui, Antioquia, Colombia. Methods Twelve samples were collected and evaluated ev...

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Bibliographic Details
Published in:Revista de salud pública (Bogotá, Colombia) Colombia), 2013-10, Vol.15 (5), p.778
Main Authors: Bedoya-Urrego, Katherine, Acevedo-Ruiz, Jose M, Pelaez-Jaramillo, Carlos A, del Pilar Agudelo-Lopez, Sonia
Format: Article
Language:Spanish
Subjects:
Bacteria
Organic fertilizers
Parasitic diseases
Rain
Sewage treatment
Sludge
Water treatment plants
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Summary:Objective This study was aimed at evaluating pertinent physicochemical and microbiological (bacteria and parasites) parameters regarding the biosolids produced by the San Fernando wastewater treatment plant (WWTP) in Itagui, Antioquia, Colombia. Methods Twelve samples were collected and evaluated every month from January to December during 2010. The chemical, physical and microbiological tests followed the protocol described in Colombian technical guideline 5167. The protocol described in Mexican official Norm 004 (with some modifications) was used for identifying helminth ova and assessing their viability. Results All samples proved positive for Ascaris lumbricoides, viable ova count ranging from 4 to 22 eggs/2gTS. Both Salmonella and Enterobacteria were detected in all samples evaluated, the latter having 3,000 colony forming unit (CFU)/g minimum concentration. Biosolid sample values met the heavy metal concentration requirement established by national guidelines. There was no statistical association between rainfall and the pathogen's presence in the biosolids. Conclusion Our results suggested that the biosolids being produced by the San Fernando wastewater treatment plant (WWTP) could be used as organic fertilizer; however they should be treated/sanitized to meet the stipulations in Colombian technical guideline 5167. Key Words: Wastewater, helminth, enterobacteria, salmonella, fertilizer, sewage/ sludge-based manure (source: MeSH, NLM). Objetivo Realizar la caracterizacion fisico-quimica, microbiologica y parasitologica en biosolidos generados en la planta de tratamiento de agua residual San Fernando, Itagui (Antioquia, Colombia). Metodos Se analizaron 12 muestras de biosolido tomadas cada mes, de enero a diciembre de 2010 a las cuales se les realizo un analisis fisico-quimico y microbiologico de acuerdo a lo establecido en la Norma Tecnica Colombiana 5167. Para la determinacion y viabilidad de huevos de helmintos se siguio el protocolo descrito en la Norma Oficial Mexicana 004 con modificaciones. Resultados En las doce muestras analizadas, se encontro una concentracion de huevos de Ascaris lumbricoides en un rango entre 4 a 22 huevos viables/2g ST Salmonella estuvo presente en todas las muestras y las Enterobacterias estuvieron en una concentracion minima de 3000 UFC/g. La concentracion de los metales pesados estuvo dentro de los valores recomendados por la norma. Los macro y micronutrientes cumplieron con los parametros establecidos para los materia
ISSN:0124-0064