AccScience Publishing / AJWEP / Volume 20 / Issue 4 / DOI: 10.3233/AJW230050
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ARTICLE

Granules as Precursors in the Working of Upflow Anaerobic Sludge Blanket Reactor: A Review on the Impacts of Granulation

A. Aishwarya Lakshmi1* ,  S. Amalraj2 ,  G. Venkatesan1
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1 Department of Civil Engineering, Saveetha Engineering College, Chennai – 602 105, India
2 Centre for Environmental Studies, College of Engineering Guindy, Anna University, Chennai, Tamil Nadu, India
AJWEP 2023, 20(4), 41–45; https://doi.org/10.3233/AJW230050
Received: 26 December 2022 | Published online: 3 July 2023
© 2023 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International License ( https://creativecommons.org/licenses/by/4.0/ )
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Abstract

High-rate anaerobic digesters are of great concern these days—due to their high loading capacity,  reduced carbon footprints and lower sludge production. Among them, the most preferred is the upflow anaerobic  sludge blanket (UASB) reactor. However, there are still unresolved issues that inhibit the widespread of this  technology. To start with the granular sludge bed fostering the microflora forms the prime seat in the working  of UASB reactors. These microflora have a predominant role in the treatment of wastewater, hence the factors  governing their growth, survival, and distribution are to be studied. Thus it seemed as due important to analyse  the granular sludge for its particle size, particle density, and microfilm characteristics, to enhance the reactor’s  efficiency. This has made scientists across the world put an eye on factors that shape the granules and how the  granules contribute to wastewater treatment. The state-of-the-art is presented in this study

Keywords
Anaerobic reactors
biogas
granulation
microbes
sludge bed
UASB
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Asian Journal of Water, Environment and Pollution, Electronic ISSN: 1875-8568 Print ISSN: 0972-9860, Published by AccScience Publishing
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