Imperial College London
Alternate

ProfessorStephenSmith

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Bioresource Systems
 
 
 
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Contact

 

+44 (0)20 7594 6051s.r.smith

 
 
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Assistant

 

Miss Judith Barritt +44 (0)20 7594 5967

 
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Location

 

229Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Irwin:2017:10.2166/wh.2017.316,
author = {Irwin, R and Surapaneni, A and Smith, D and Schmidt, J and Rigby, H and Smith, SR},
doi = {10.2166/wh.2017.316},
journal = {Journal of Water and Health},
pages = {626--637},
title = {Verification of an alternative sludge treatment process for pathogen reduction at two wastewater treatment plants in Victoria, Australia},
url = {http://dx.doi.org/10.2166/wh.2017.316},
volume = {15},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - At South East Water wastewater treatment plants (WwTPs) in Victoria, Australia, biosolids are stockpiled for three years in compliance with the State guidelines to achieve the highest pathogen reduction grade (T1), suitable for unrestricted use in agriculture and landscaping. However, extended stockpiling is costly, may increase odour nuisance and greenhouse gas emissions, and reduces the fertiliser value of the biosolids. A verification programme of sampling and analysis for enteric pathogens was conducted at two WwTPs where sludge is treated by aerobic and anaerobic digestion, air drying (in drying pans or solar drying sheds) and stockpiling, to enumerate and, if present, monitor the decay of a range of enteric pathogens and parasites. The sludge treatment processes at both WwTPs achieved T1 grade biosolids with respect to prescribed pathogenic bacterial numbers (<1 Salmonella spp. 50 g−1 dry solids (DS) and <100 Escherichia coli g−1 DS) and >3 log10 enteric virus reduction after a storage period of one year. No Ascaris eggs were detected in the influent to the WwTPs, confirming previous studies that the presence of helminth infections in Victoria is extremely low and that Ascaris is not applicable as a control criterion for the microbiological quality of biosolids in the region.
AU  - Irwin,R
AU  - Surapaneni,A
AU  - Smith,D
AU  - Schmidt,J
AU  - Rigby,H
AU  - Smith,SR
DO  - 10.2166/wh.2017.316
EP  - 637
PY  - 2017///
SN  - 1477-8920
SP  - 626
TI  - Verification of an alternative sludge treatment process for pathogen reduction at two wastewater treatment plants in Victoria, Australia
T2  - Journal of Water and Health
UR  - http://dx.doi.org/10.2166/wh.2017.316
UR  - http://hdl.handle.net/10044/1/48331
VL  - 15
ER  -
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