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Upset Early Warning Systems for Biological Treatment Processes: Source and effect relationships

By
Nancy Love
Nancy Love
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IWA Publishing
Volume
4
ISBN electronic:
9781780404455
Publication date:
December 2005

A laboratory study was conducted to elucidate the source-effect relationships for seven chemicals (sources) that can cause activated sludge process upset (effect). These chemicals were studied over a range of concentrations using both nitrifying and non-nitrifying laboratory-scale activated sludge sequencing batch reactors.

Effects were characterized according to traditional methods of evaluating process effluent and mixed liquor quality. A range of process effects were observed for both biomass sources. Overall impact was assessed and the degree to which a chemical caused an impact on process performance was considered to be more detrimental than if a chemical had multiple process effects that were moderate.

Almost all chemicals caused multiple process effects, but the intensity and type of process effect was not always predictable based on the chemical applied. The findings show that there are multiple ways that chemicals can impact activated sludge plants, and suggest that corrective action practices need to be tailored based on the nature of the chemical causing the upset.

This title belongs to WERF Research Report Series

ISBN: 9781843397427 (Print)

ISBN: 9781780404455 (eBook)

Upset Early Warning Systems for Biological Treatment Processes: Source and effect relationships
By: Nancy Love
DOI: https://doi.org/10.2166/9781780404455
ISBN (electronic): 9781780404455
Publisher: IWA Publishing
Published: 2005

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