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

Moazzam Shahzad; Sher Jamal Khan; Parneet Paul

doi:10.3390/w7030855

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

Moazzam Shahzad, Sher Jamal Khan, Parneet Paul

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	855-867
Journal	Water
Volume	7
Issue number	3
DOIs	https://doi.org/10.3390/w7030855
Publication status	Published - 2 Mar 2015
Externally published	Yes

Bibliographical note

Note: This work was supported by the Master of Science (MS) Research Grant provided by the National
University of Sciences and Technology (NUST), Islamabad, Pakistan.

Keywords

Chemical engineering

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10.3390/w7030855

Water-07-00855Final published version, 348 KBLicence: CC BY

http://dx.doi.org/10.3390/w7030855

Cite this

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

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.",

keywords = "Chemical engineering",

author = "Moazzam Shahzad and Khan, \{Sher Jamal\} and Parneet Paul",

note = "Note: This work was supported by the Master of Science (MS) Research Grant provided by the National University of Sciences and Technology (NUST), Islamabad, Pakistan.",

year = "2015",

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doi = "10.3390/w7030855",

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T1 - Influence of temperature on the performance of a full-scale activated sludge process operated at varying solids retention times whilst treating municipal sewage

AU - Shahzad, Moazzam

AU - Khan, Sher Jamal

AU - Paul, Parneet

N1 - Note: This work was supported by the Master of Science (MS) Research Grant provided by the National University of Sciences and Technology (NUST), Islamabad, Pakistan.

PY - 2015/3/2

Y1 - 2015/3/2

N2 - 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.

AB - 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.

KW - Chemical engineering

U2 - 10.3390/w7030855

DO - 10.3390/w7030855

M3 - Article

SN - 2073-4441

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SP - 855

EP - 867

JO - Water

JF - Water

IS - 3

ER -

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

Abstract

Bibliographical note

Keywords

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