Effect of particulate organic substrate on aerobic granulation and operating conditions of sequencing batch reactors

Water Research
Jamile WagnerNicolas Derlon

Abstract

The formation and application of aerobic granules for the treatment of real wastewaters still remains challenging. The high fraction of particulate organic matter (XS) present in real wastewaters can affect the granulation process. The present study aims at understanding to what extent the presence of XS affects the granule formation and the quality of the treated effluent. A second objective was to evaluate how the operating conditions of an aerobic granular sludge (AGS) reactor must be adapted to overcome the effects of the presence of XS. Two reactors fed with synthetic wastewaters were operated in absence (R1) or presence (R2) of starch as proxy for XS. Different operating conditions were evaluated. Our results indicated that the presence of XS in the wastewater reduces the kinetic of granule formation. After 52 d of operation, the fraction of granules reached only 21% in R2, while in R1 this fraction was of 54%. The granules grown in presence of XS had irregular and filamentous outgrowths in the surface, which affected the settleability of the biomass and therefore the quality of the effluent. An extension of the anaerobic phase in R2 led to the formation of more compact granules with a better settling ability. A high frac...Continue Reading

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Citations

May 1, 2018·Applied Microbiology and Biotechnology·Britt-Marie WilénMalte Hermansson
Dec 17, 2017·Applied Microbiology and Biotechnology·Han ChenFang Ma
May 18, 2020·Applied Microbiology and Biotechnology·Nathan Pacheco Amin Vieira da CostaRejane Helena Ribeiro da Costa
Mar 23, 2017·Biotechnology and Bioengineering·David G WeissbrodtEberhard Morgenroth
Aug 31, 2020·Bioprocess and Biosystems Engineering·Dayane Gonzaga DomingosRejane Helena Ribeiro da Costa
May 8, 2021·Journal of Environmental Management·Tasso Jorge Tavares FerreiraAndré Bezerra Dos Santos
Jul 14, 2021·Water Research·Hong-Cin LiouOluwaseyi Balogun
Jul 28, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Isaac AvilaJames McQuarrie

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