Effect of reactor height/diameter ratio and organic loading rate on formation of aerobic granular sludge in sewage treatment

Awang, N.A. and Shaaban, M.G. (2016) Effect of reactor height/diameter ratio and organic loading rate on formation of aerobic granular sludge in sewage treatment. International Biodeterioration and Biodegradation, 112. pp. 1-11. ISSN 0964-8305, DOI https://doi.org/10.1016/j.ibiod.2016.04.028.

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Official URL: https://doi.org/10.1016/j.ibiod.2016.04.028

Abstract

Although a high volume of research on aerobic granular sludge exists in the body of related literature, the determination of biokinetic parameters of aerobic granules using a linear plot for biodegradation of real wastewater has rarely been discussed. Therefore, this study aims to determine the biokinetic parameters of aerobic granules that develop in a sequencing batch reactor (SBR) with sewage as a substrate, using a linear plot. The difference in biokinetic parameter (k, Ks, Y, Kd and μmax) values gathered from five aerobic granules batches were tested as whether it is linearly correlated with the variable organic loading rate (OLR) and reactor height/diameter (H/D) ratio. The R2 value of 0.97 and 0.82 was obtained from the linear correlation between μmax and reactor H/D ratio, and Y and OLR, respectively. This demonstrates that biomass production (Y and μmax) proportionally depends on the increase in OLR and reactor H/D ratio. This might be because the effectiveness of the aerobic granules measured by Ks are greater in high H/D ratio reactors with values over 315 mg/L as compared to less than 276 mg/L in low H/D ratio reactors.

Item Type: Article
Funders: Department of Higher Education Malaysia: (FP041-2013B), University of Malaya: Research grants (RG160-12SUS and PV038-2012A)
Uncontrolled Keywords: Aerobic granular sludge; Biokinetic parameters; Sewage; Stability
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering > Department of Civil Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 30 Nov 2017 04:05
Last Modified: 30 Nov 2017 04:05
URI: http://eprints.um.edu.my/id/eprint/18391

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