Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)

Comparison Between Sequencing Batch Reactors (SBR) and Stirred Tank Reactors (STR) in Handling Hydraulic Shock Loads

Authors
Herawati Budiastuti1, *, Emma Hermawati Muhari1, Laily Isna Ramadhani1, Mukhtar Ghozali1, Robby Sudarman1
1Department of Chemical Engineering, Politeknik Negeri Bandung, Bandung, Indonesia
*Corresponding author. Email: herabudi@polban.acid
Corresponding Author
Herawati Budiastuti
Available Online 23 November 2021.
DOI
10.2991/aer.k.211106.060How to use a DOI?
Keywords
wastewater; hydraulic shock load; Sequencing Batch Reactor
Abstract

The use of Stirred Tank Reactor (STR) in wastewater treatment requires a Clarifier in its operation so that Sequencing Batch Reactor (SBR) is an alternative solution. The clarifier is needed to recover some of the wasted microbes in the effluent stream. With SBR, the Clarifier function is replaced when the settle phase in the SBR operating cycle is executed. The four phases of SBR operation are carried out in stages and sequentially, namely, the fill, react, settle, and draw/decant phases. In this study, the performance of SBR and STR was compared in treating molasses-based wastewater. At an organic loading rate of 516 mg COD L-1 day-1 and 20 days HRT, these two types of reactors were capable to remove the COD content of wastewater with an efficiency of about 90%. At a hydraulic shock load of 10 days and the same organic loading rate, SBR showed its superiority. The organic compound removal efficiency of around 89% could still be maintained by SBR but the organic compound removal efficiency of only about 57% could be maintained by STR. The parameters of pH could be maintained by SBR in the pH range of 7.2 to 7.4, whereas the pH values in STR were in the pH range of 7.0 to 6.3.

Copyright
© 2021 The Authors. Published by Atlantis Press International B.V.
Open Access
This is an open access article under the CC BY-NC license.

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Volume Title
Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)
Series
Advances in Engineering Research
Publication Date
23 November 2021
ISBN
978-94-6239-451-3
ISSN
2352-5401
DOI
10.2991/aer.k.211106.060How to use a DOI?
Copyright
© 2021 The Authors. Published by Atlantis Press International B.V.
Open Access
This is an open access article under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Herawati Budiastuti
AU  - Emma Hermawati Muhari
AU  - Laily Isna Ramadhani
AU  - Mukhtar Ghozali
AU  - Robby Sudarman
PY  - 2021
DA  - 2021/11/23
TI  - Comparison Between Sequencing Batch Reactors (SBR) and Stirred Tank Reactors (STR) in Handling Hydraulic Shock Loads
BT  - Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)
PB  - Atlantis Press
SP  - 376
EP  - 380
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.211106.060
DO  - 10.2991/aer.k.211106.060
ID  - Budiastuti2021
ER  -