The Impact of Alum on the Bulking of a Full Scale Activated Sludge Plant

Peter Ojo; Augustine Ifelebuegu

doi:10.15224/978-1-63248-100-9-57

The Impact of Alum on the Bulking of a Full Scale Activated Sludge Plant

Peter Ojo, Augustine Ifelebuegu

School of Energy, Construction and Environment

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding › peer-review

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Abstract

The activated sludge plant (ASP) is one of the main wastewater treatment processes in the UK. With the increasing stringent requirement for effluent quality, there has been a considerable increase in the use of chemicals for phosphorus precipitation in ASPs to achieve effluent consents. Alum is one of the most widely used chemicals in the treatment of wastewater. In this study, we examine the impact of varying concentrations of alum on the bulking and settleability of a full-scale activated sludge plant with simultaneous co-precipitation. The results showed an improvement in the settleability of the activated sludge with the initial stirred sludge volume index (SSVI) before alum dosing dropping from 105 to 85 after one sludge age. The SSVI increased to 155 with the settleability and floc compactability deteriorating at a dose rate of 145mg/L of alum. The bulking of the sludge was caused by a combination of the filaments present and the surface chemistry of the activated sludge flocs.

Publisher Statement - This paper and others from the same conference can be found from the Seek Digital Library www.seekdl.org

Original language	English
Title of host publication	Proceedings of the fourth International Conference on Advances in Bio-Informatics and Environmental Engineering - ICABEE 2016
Subtitle of host publication	ICABEE 2016
Publisher	Institute of Research Engineers and Doctors
Pages	53 - 57
Number of pages	5
ISBN (Electronic)	978163248011
DOIs	https://doi.org/10.15224/978-1-63248-100-9-57
Publication status	Published - 8 Jun 2016
Event	Fourth International Conference on Advances in Bio-Informatics and Environmental Engineering - ICABEE 2016 - Rome, Italy Duration: 18 Aug 2016 → 19 Aug 2016 Conference number: 4

Conference

Conference	Fourth International Conference on Advances in Bio-Informatics and Environmental Engineering - ICABEE 2016
Country/Territory	Italy
City	Rome
Period	18/08/16 → 19/08/16

Keywords

Activated Sludge
Settleability
FST
Bulking

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10.15224/978-1-63248-100-9-57

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The Impact of Alum on the Bulking of a Full Scale Activated Sludge Plant. / Ojo, Peter; Ifelebuegu, Augustine.
Proceedings of the fourth International Conference on Advances in Bio-Informatics and Environmental Engineering - ICABEE 2016 : ICABEE 2016. Institute of Research Engineers and Doctors, 2016. p. 53 - 57.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding › peer-review

Ojo, P & Ifelebuegu, A 2016, The Impact of Alum on the Bulking of a Full Scale Activated Sludge Plant. in Proceedings of the fourth International Conference on Advances in Bio-Informatics and Environmental Engineering - ICABEE 2016 : ICABEE 2016. Institute of Research Engineers and Doctors, pp. 53 - 57, Fourth International Conference on Advances in Bio-Informatics and Environmental Engineering - ICABEE 2016 , Rome, Italy, 18/08/16. https://doi.org/10.15224/978-1-63248-100-9-57

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abstract = "The activated sludge plant (ASP) is one of the main wastewater treatment processes in the UK. With the increasing stringent requirement for effluent quality, there has been a considerable increase in the use of chemicals for phosphorus precipitation in ASPs to achieve effluent consents. Alum is one of the most widely used chemicals in the treatment of wastewater. In this study, we examine the impact of varying concentrations of alum on the bulking and settleability of a full-scale activated sludge plant with simultaneous co-precipitation. The results showed an improvement in the settleability of the activated sludge with the initial stirred sludge volume index (SSVI) before alum dosing dropping from 105 to 85 after one sludge age. The SSVI increased to 155 with the settleability and floc compactability deteriorating at a dose rate of 145mg/L of alum. The bulking of the sludge was caused by a combination of the filaments present and the surface chemistry of the activated sludge flocs. Publisher Statement - This paper and others from the same conference can be found from the Seek Digital Library www.seekdl.org ",

keywords = "Activated Sludge, Settleability, FST, Bulking",

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AU - Ifelebuegu, Augustine

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N2 - The activated sludge plant (ASP) is one of the main wastewater treatment processes in the UK. With the increasing stringent requirement for effluent quality, there has been a considerable increase in the use of chemicals for phosphorus precipitation in ASPs to achieve effluent consents. Alum is one of the most widely used chemicals in the treatment of wastewater. In this study, we examine the impact of varying concentrations of alum on the bulking and settleability of a full-scale activated sludge plant with simultaneous co-precipitation. The results showed an improvement in the settleability of the activated sludge with the initial stirred sludge volume index (SSVI) before alum dosing dropping from 105 to 85 after one sludge age. The SSVI increased to 155 with the settleability and floc compactability deteriorating at a dose rate of 145mg/L of alum. The bulking of the sludge was caused by a combination of the filaments present and the surface chemistry of the activated sludge flocs. Publisher Statement - This paper and others from the same conference can be found from the Seek Digital Library www.seekdl.org

AB - The activated sludge plant (ASP) is one of the main wastewater treatment processes in the UK. With the increasing stringent requirement for effluent quality, there has been a considerable increase in the use of chemicals for phosphorus precipitation in ASPs to achieve effluent consents. Alum is one of the most widely used chemicals in the treatment of wastewater. In this study, we examine the impact of varying concentrations of alum on the bulking and settleability of a full-scale activated sludge plant with simultaneous co-precipitation. The results showed an improvement in the settleability of the activated sludge with the initial stirred sludge volume index (SSVI) before alum dosing dropping from 105 to 85 after one sludge age. The SSVI increased to 155 with the settleability and floc compactability deteriorating at a dose rate of 145mg/L of alum. The bulking of the sludge was caused by a combination of the filaments present and the surface chemistry of the activated sludge flocs. Publisher Statement - This paper and others from the same conference can be found from the Seek Digital Library www.seekdl.org

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KW - Settleability

KW - FST

KW - Bulking

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BT - Proceedings of the fourth International Conference on Advances in Bio-Informatics and Environmental Engineering - ICABEE 2016

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ER -

The Impact of Alum on the Bulking of a Full Scale Activated Sludge Plant

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