Influence of temperature on the performance of a full-scale activated sludge process operated at varying solids retention times whilst treating municipal sewage

Shahzad, Moazzam, Khan, Sher Jamal and Paul, Parneet (2015) Influence of temperature on the performance of a full-scale activated sludge process operated at varying solids retention times whilst treating municipal sewage. Water, 7(3), pp. 855-867. ISSN (online) 2073-4441

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Abstract

In this study, the solid retention time (SRT) was varied with the ambient temperature for a full-scale municipal activated sludge plant with capacity of 200,000 PE (Population Equivalent) located in a humid sub-tropical environment. The effects of ambient temperature on treatment performance were investigated. Off-line samples were collected and analyzed from the treatment plant. The actual temperature variation during the study period was divided into three overlapping ranges and the SRT was adjusted accordingly with temperature in order to achieve the desired effluent quality. The plant’s observed effluent quality and thereby its overall removal efficiency was evaluated in terms of measuring standard biochemical parameters. The results indicate that significant improvement in effluent quality can be obtained by applying the variable SRT (5–7 days) dependent on temperature variation.

Item Type: Article
Additional Information: This work was supported by the Master of Science (MS) Research Grant provided by the National University of Sciences and Technology (NUST), Islamabad, Pakistan.
Research Area: Chemical engineering
Faculty, School or Research Centre: Faculty of Science, Engineering and Computing (until 2017) > School of Civil Engineering and Construction
Depositing User: Parneet Paul
Date Deposited: 27 Apr 2016 13:43
Last Modified: 27 Apr 2016 13:43
DOI: https://doi.org/10.3390/w7030855
URI: http://eprints.kingston.ac.uk/id/eprint/33907

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