Parámetros fisicoquímicos asociados a la proliferación de bacterias filamentosas (Bulking filamentoso) en las plantas de tratamiento de aguas residuales mediante lodos activados: revisión sistemática

ABSTRACT: Activated sludge system for Wastewater treatment plants present problems such as filamentous bulking. It was found that the most common morphotypes linked to this phenomenon are: Microthrix parvicella, Thiothrix spp., Nostocoida limicola, Sphaerotilus natans, Type 0041 and Haliscomenobacter hydrossis. The Association of the physicochemical parameters in the system with the bulking diverges in all the studies. Objective To describe the physicochemical parameters that influence the proliferation of bacterial morphotypes in filamentous bulking phenomenon, through the comparative analysis of several worldwide studies. Materials and methods A systematic review was made from original research articles published in the last 18 years, found in databases such as Science Direct, Scielo, Web of Knowledge, EBSCO, Wiley, and Springer Link. Results Fifteen articles were selected and organized according to the plant size. It was found that the most shocking parameters on filamentous bacteria proliferation are: low DO, low F/M rate, low temperature and wastewater type. The Most common parameters indicating presence of bulking through studies are SVI, FI and filamentous morphotypes. Conclusions There is no consensus among physicochemical parameters values associated to filamentous bacteria proliferation in WWTP´s. However, bacterial proliferation may depend of many factors such as the input of easily available substrate, low temperature and availability of dissolved oxygen per unit of organic load. Key words: Activated sludge, bulking, filamentous bacteria, filamentous index, sludge volume index.

• Autores: Balcárcel Guzmán, Lina Marcela; Erazo H., Paola Nathaly; Vides G., Ana Milena; Ramírez Pérez., Auxilio
• Tipo de recurso: Review article
• Fecha de publicación: 2012
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/11062
• Acceso en línea: http://hdl.handle.net/10495/11062
• Palabra clave: Lodos activados; Actived sludge; Bacterias filamentosas; Bulking; Índice volumétrico de lodos
• Rights: openAccess
• License: Atribución 2.5 Colombia (CC BY 2.5 CO)