High-rate activated sludge communities have a distinctly different structure compared to low-rate sludge communities, and are less sensitive towards environmental and operational variables.

2.50
Hdl Handle:
http://hdl.handle.net/10033/611981
Title:
High-rate activated sludge communities have a distinctly different structure compared to low-rate sludge communities, and are less sensitive towards environmental and operational variables.
Authors:
Meerburg, Francis A; Vlaeminck, Siegfried E; Roume, Hugo; Seuntjens, Dries; Pieper, Dietmar H; Jauregui, Ruy; Vilchez-Vargas, Ramiro ( 0000-0002-7220-258X ) ; Boon, Nico
Abstract:
High-rate activated sludge processes allow for the recovery of organics and energy from wastewaters. These systems are operated at a short sludge retention time and high sludge-specific loading rates, which results in a higher sludge yield and better digestibility than conventional, low-rate activated sludge. Little is known about the microbial ecology of high-rate systems. In this work, we address the need for a fundamental understanding of how high-rate microbial communities differ from low-rate communities. We investigated the high-rate and low-rate communities in a sewage treatment plant in relation to environmental and operational variables over a period of ten months. We demonstrated that (1) high-rate and low-rate communities are distinctly different in terms of richness, evenness and composition, (2) high-rate community dynamics are more variable and less shaped by deterministic factors compared to low-rate communities, (3) sub-communities of continuously core and transitional members are more shaped by deterministic factors than the continuously rare members, both in high-rate and low-rate communities, and (4) high-rate community members showed a co-occurrence pattern similar to that of low-rate community members, but were less likely to be correlated to environmental and operational variables. These findings provide a basis for further optimization of high-rate systems, in order to facilitate resource recovery from wastewater.
Affiliation:
Helmholtz Centre for infection research, Inhoffenstr. 7, 38124 Braunschweig, Germany.
Citation:
High-rate activated sludge communities have a distinctly different structure compared to low-rate sludge communities, and are less sensitive towards environmental and operational variables. 2016, 100:137-145 Water Res.
Journal:
Water research
Issue Date:
7-May-2016
URI:
http://hdl.handle.net/10033/611981
DOI:
10.1016/j.watres.2016.04.076
PubMed ID:
27183209
Type:
Article
ISSN:
1879-2448
Appears in Collections:
publications of the research group microbial interactions and processes (MINP)

Full metadata record

DC FieldValue Language
dc.contributor.authorMeerburg, Francis Aen
dc.contributor.authorVlaeminck, Siegfried Een
dc.contributor.authorRoume, Hugoen
dc.contributor.authorSeuntjens, Driesen
dc.contributor.authorPieper, Dietmar Hen
dc.contributor.authorJauregui, Ruyen
dc.contributor.authorVilchez-Vargas, Ramiroen
dc.contributor.authorBoon, Nicoen
dc.date.accessioned2016-06-07T12:45:42Zen
dc.date.available2016-06-07T12:45:42Zen
dc.date.issued2016-05-07en
dc.identifier.citationHigh-rate activated sludge communities have a distinctly different structure compared to low-rate sludge communities, and are less sensitive towards environmental and operational variables. 2016, 100:137-145 Water Res.en
dc.identifier.issn1879-2448en
dc.identifier.pmid27183209en
dc.identifier.doi10.1016/j.watres.2016.04.076en
dc.identifier.urihttp://hdl.handle.net/10033/611981en
dc.description.abstractHigh-rate activated sludge processes allow for the recovery of organics and energy from wastewaters. These systems are operated at a short sludge retention time and high sludge-specific loading rates, which results in a higher sludge yield and better digestibility than conventional, low-rate activated sludge. Little is known about the microbial ecology of high-rate systems. In this work, we address the need for a fundamental understanding of how high-rate microbial communities differ from low-rate communities. We investigated the high-rate and low-rate communities in a sewage treatment plant in relation to environmental and operational variables over a period of ten months. We demonstrated that (1) high-rate and low-rate communities are distinctly different in terms of richness, evenness and composition, (2) high-rate community dynamics are more variable and less shaped by deterministic factors compared to low-rate communities, (3) sub-communities of continuously core and transitional members are more shaped by deterministic factors than the continuously rare members, both in high-rate and low-rate communities, and (4) high-rate community members showed a co-occurrence pattern similar to that of low-rate community members, but were less likely to be correlated to environmental and operational variables. These findings provide a basis for further optimization of high-rate systems, in order to facilitate resource recovery from wastewater.en
dc.languageENGen
dc.titleHigh-rate activated sludge communities have a distinctly different structure compared to low-rate sludge communities, and are less sensitive towards environmental and operational variables.en
dc.typeArticleen
dc.contributor.departmentHelmholtz Centre for infection research, Inhoffenstr. 7, 38124 Braunschweig, Germany.en
dc.identifier.journalWater researchen

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