Monitoring of activated sludge settling ability through image analysis: validation on full-scale wastewater treatment plants

Bioprocess and Biosystems Engineering
Daniela P MesquitaE C Ferreira

Abstract

In recent years, a great deal of attention has been focused on the research of activated sludge processes, where the solid-liquid separation phase is frequently considered of critical importance, due to the different problems that severely affect the compaction and the settling of the sludge. Bearing that in mind, in this work, image analysis routines were developed in Matlab environment, allowing the identification and characterization of microbial aggregates and protruding filaments in eight different wastewater treatment plants, for a combined period of 2 years. The monitoring of the activated sludge contents allowed for the detection of bulking events proving that the developed image analysis methodology is adequate for a continuous examination of the morphological changes in microbial aggregates and subsequent estimation of the sludge volume index. In fact, the obtained results proved that the developed image analysis methodology is a feasible method for the continuous monitoring of activated sludge systems and identification of disturbances.

References

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Citations

Jan 27, 2010·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·D P MesquitaE C Ferreira
Sep 2, 2010·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·D P MesquitaE C Ferreira
Jul 11, 2013·Environmental Technology·E KoivurantaJ Niinimäki
Feb 18, 2012·Journal of the Royal Society, Interface·L Lahuerta Zamora, M T Pérez-Gracia
Apr 9, 2011·Environmental Science and Pollution Research International·Daniela P MesquitaMaria Alice Z Coelho
May 30, 2013·Environmental Science and Pollution Research International·J C CostaE C Ferreira
Nov 5, 2014·Environmental Technology·Ewa Liwarska-BizukojcOlga Andrzejczak
Sep 2, 2017·Environmental Technology·Jani TomperiKauko Leiviskä
Feb 7, 2017·Environmental Technology·Elisa KoivurantaMirja Illikainen
Jan 11, 2019·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Mateusz SobczykJanusz Fyda
Mar 11, 2017·Environmental Technology·Muhammad Burhan KhanVooi Voon Yap

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