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Efficient treatment of dairy processing wastewater in a laboratory scale Intermittently Aerated Sequencing Batch Reactor (IASBR)

Published online by Cambridge University Press:  08 August 2018

Peter Leonard ,
Emma Tarpey ,
William Finnegan  and
Xinmin Zhan
Peter Leonard
Affiliation:
Civil Engineering, College of Engineering and Informatics, National University of Ireland, Galway, Ireland Ryan Institute for Environmental, Marine and Energy Research, Galway, Ireland
Emma Tarpey
Affiliation:
Civil Engineering, College of Engineering and Informatics, National University of Ireland, Galway, Ireland Ryan Institute for Environmental, Marine and Energy Research, Galway, Ireland
William Finnegan
Affiliation:
Civil Engineering, College of Engineering and Informatics, National University of Ireland, Galway, Ireland Ryan Institute for Environmental, Marine and Energy Research, Galway, Ireland
Xinmin Zhan*
Affiliation:
Civil Engineering, College of Engineering and Informatics, National University of Ireland, Galway, Ireland Ryan Institute for Environmental, Marine and Energy Research, Galway, Ireland
*
*For correspondence; e-mail: [email protected]
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Abstract

This Research Communication describes an investigation into the viability of an Intermittently Aerated Sequencing Batch Reactor (IASBR) for the treatment of dairy processing wastewater at laboratory-scale. A number of operational parameters have been varied and the effect has been monitored in order to determine optimal conditions for maximising removal efficiencies. These operational parameters include Hydraulic Retention Time (HRT), Solids Retention Time (SRT), aeration rate and cycle length. Real dairy processing wastewater and synthetic wastewater have been treated using three laboratory-scale IASBR units in a temperature controlled room. When the operational conditions were established, the units were seeded using sludge from a municipal wastewater treatment plant for the first experiment, and sludge from a dairy processing factory for the second and third experiment. In experiment three, the reactors were fed on real wastewater from the wastewater treatment plant at this dairy processing factory. These laboratory-scale systems will be used to demonstrate over time that the IASBR system is a consistent, viable option for treatment of dairy processing wastewater in this sector. In this study, the capacity of a biological system to remove both nitrogen and phosphorus within one reactor will be demonstrated. The initial operational parameters for a pilot-scale IASBR system will be derived from the results of the study.

Keywords

Biological wastewater treatmentdairy processing wastewaterintermittent aerationnitrogenphosphorus
Type
Research Article
Information
Journal of Dairy Research , Volume 85 , Issue 3 , August 2018 , pp. 379 - 383
Copyright
Copyright © Hannah Dairy Research Foundation 2018 

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