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231225s2018 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2017.626
|2 doi
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|a pubmed25n0938.xml
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|a (NLM)29488974
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Thwaites, Benjamin J
|e verfasserin
|4 aut
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| 245 |
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|a Ecology and performance of aerobic granular sludge treating high-saline municipal wastewater
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 15.08.2018
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|a Date Revised 07.12.2022
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|a published: Print
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|a Citation Status MEDLINE
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|a The successful development of aerobic granular sludge (AGS) for secondary wastewater treatment has been linked to a dedicated anaerobic feeding phase, which enables key microbes such as poly-phosphate-accumulating organisms (PAOs) and glycogen-accumulating organisms to gain a competitive advantage over floc-forming organisms. The application of AGS to treat high-saline sewage and its subsequent impacts on microbial ecology, however, are less well understood. In this study, the impacts of high-saline sewage on AGS development, performance and ecology were investigated using molecular microbiology methods. Two feeding strategies were compared at pilot scale: a full (100%) anaerobic feed; and a partial (33%) anaerobic feed. The results were compared to a neighbouring full-scale conventional activated sludge (CAS) system (100% aerobic). We observed that AGS developed under decreased anaerobic contact showed a comparable formation, stability and nitrogen removal performance to the 100% anaerobically fed system. Analysis of the microbial ecology showed that the altered anaerobic contact had minimal effect on the abundances of the functional nitrifying and denitrifying bacteria and Archaea; however, there were notable ecological differences when comparing different sized granules. In contrast to previous work, a large enrichment in PAOs in AGS was not observed in high-saline wastewater, which coincided with poor observed phosphate removal performance. Instead, AGS exhibited a substantial enrichment in sulfide-oxidising bacteria, which was complemented by elemental analysis that identified the presence of elemental sulfur precipitation. The potential role for these organisms in AGS treating high-saline wastewater is discussed
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|a Journal Article
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|a Waste Water
|2 NLM
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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|a van den Akker, Ben
|e verfasserin
|4 aut
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1 |
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|a Reeve, Petra J
|e verfasserin
|4 aut
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1 |
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|a Short, Michael D
|e verfasserin
|4 aut
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|a Dinesh, Nirmala
|e verfasserin
|4 aut
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|a Alvarez-Gaitan, Juan Pablo
|e verfasserin
|4 aut
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| 700 |
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|a Stuetz, Richard
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 77(2018), 3-4 vom: 01. Feb., Seite 1107-1114
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnns
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| 773 |
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|g volume:77
|g year:2018
|g number:3-4
|g day:01
|g month:02
|g pages:1107-1114
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|u http://dx.doi.org/10.2166/wst.2017.626
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