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dc.contributor.author
Ward, Barbara J.
dc.contributor.author
Traber, Jacqueline
dc.contributor.author
Gueye, Amadou
dc.contributor.author
Diop, Bécaye
dc.contributor.author
Morgenroth, Eberhard
dc.contributor.author
Strande, Linda
dc.date.accessioned
2019-10-01T10:11:23Z
dc.date.available
2019-09-30T17:32:03Z
dc.date.available
2019-10-01T10:11:23Z
dc.date.issued
2019-12-15
dc.identifier.issn
0043-1354
dc.identifier.issn
1879-2448
dc.identifier.other
10.1016/j.watres.2019.115101
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/367398
dc.identifier.doi
10.3929/ethz-b-000367398
dc.description.abstract
Unpredictable dewatering performance is a barrier to the effective management and treatment of faecal sludge. While mechanisms of dewatering in sludges from wastewater treatment are well understood, it is not clear how dewatering of faecal sludge fits into the framework of existing knowledge. We evaluate physical-chemical parameters, including EPS and cations, and demographic (source), environmental (microbial community), and technical factors (residence time) as possible predictors of dewatering performance in faecal sludge, and make comparisons to the existing conceptual model for wastewater sludge. Faecal sludge from public toilets took longer to dewater than sludge from other sources, and had turbid supernatant after settling. Slow dewatering and turbid supernatant corresponded to high EPS and monovalent cation concentrations, conductivity, and pH, but cake solids after dewatering was not correlated with EPS or other factors. Faecal sludges with higher EPS appeared less stabilised than those with lower EPS, potentially a result of inhibition of biological degradation due to high urine concentrations. However, distinct microbial community compositions were also observed in samples with higher and lower EPS concentrations. Higher EPS faecal sludge was comparable in dewatering behaviour and EPS content to anaerobically digested and primary wastewater sludges. However lower EPS faecal sludges had different dewatering behaviour than wastewater sludges and may be governed by different mechanisms.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject
Fecal sludge
en_US
dc.subject
EPS
en_US
dc.subject
CST
en_US
dc.subject
Stabilization
en_US
dc.subject
Public toilet
en_US
dc.title
Evaluation of conceptual model and predictors of faecal sludge dewatering performance in Senegal and Tanzania
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.date.published
2019-09-20
ethz.journal.title
Water Research
ethz.journal.volume
167
en_US
ethz.journal.abbreviated
Water Res.
ethz.pages.start
115101
en_US
ethz.size
13 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Amsterdam
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02608 - Institut für Umweltingenieurwiss. / Institute of Environmental Engineering::03832 - Morgenroth, Eberhard / Morgenroth, Eberhard
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02608 - Institut für Umweltingenieurwiss. / Institute of Environmental Engineering::03832 - Morgenroth, Eberhard / Morgenroth, Eberhard
ethz.date.deposited
2019-09-30T17:32:12Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-10-01T10:12:05Z
ethz.rosetta.lastUpdated
2022-03-28T23:44:37Z
ethz.rosetta.versionExported
true
ethz.COinS
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