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

Lina Marcela Balcárcel G.; Paola Nathaly Erazo H.; Ana Milena Vides G.; Auxilio Ramírez P.

doi:10.17533/udea.hm.18736

Authors

Lina Marcela Balcárcel G. University of Antioquia
Paola Nathaly Erazo H. University of Antioquia
Ana Milena Vides G. University of Antioquia
Auxilio Ramírez P. University of Antioquia

DOI:

https://doi.org/10.17533/udea.hm.18736

Keywords:

activated sludge, bulking, filamentous bacteria, filamentous index, sludge volume index

Abstract

Introduction

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.

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Author Biographies

Lina Marcela Balcárcel G., University of Antioquia

Industrial and Environmental Microbiology student, University of Antioquia.

Paola Nathaly Erazo H., University of Antioquia

Industrial and Environmental Microbiology students, University of Antioquia.

Ana Milena Vides G., University of Antioquia

Industrial and Environmental Microbiology students, University of Antioquia.

Auxilio Ramírez P., University of Antioquia

Professor at the School of Microbiology, University of Antioquia.

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