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Sludge bulking impact on relevant bacterial populations in a full-scale municipal wastewater treatment plant
Wang, Juan; Li, Qian; Qi, Rong; Tandoi, Valter; Yang, Min
2014
Source PublicationPROCESS BIOCHEMISTRY
ISSN1359-5113
Volume49Issue:12Pages:2258-2265
AbstractWe have investigated the changes of microbial community structures and the concomitant performance in two biological wastewater treatment systems (conventional and inverted A(2)/O processes) over a whole cycle of sludge bulking. A low level of filament abundance was observed during non-bulking period, with types 0092 and 0041 as the dominant filamentous bacteria. With the increase of the sludge volume index values from 76 (73) to 275 (300) mg/L, the filament abundance estimated by microscopic examination increased from 1 (few) to 5 (abundant), with Microthrix parvicella becoming the dominant filament bacteria. Sludge bulking resulted in a significant shift in bacterial compositions from Proteobacteria to Actinobacteria dominance, characterized by the significant presence of filamentous M. parvicella (from not detected to higher than 60% of clones) and decrease of the dominant Betaproteobacterial population (from higher than 40% to less than 1%). Important relevant bacterial populations including polyphosphate-accumulating organism (PAO, Candidatus Accumulibacter phosphatis), ammonia-oxidizing bacteria (AOB, Nitrosomonas), nitrite-oxidizing bacteria (NOB, Nitrospira) and denitrifying bacteria (Thauera) were absent under the serious bulking condition. Accumulation of nitrite and ammonia was observed during serious bulking, while the phosphorus removal performance was not decreased because M. parvicella could behave as a PAO. (C) 2014 Elsevier Ltd. All rights reserved.
Department环境水质学国家重点实验室
KeywordWastewater Treatment Sludge Bulking Filamentous Bacteria Microbial Growth Nutrient Removal Relevant Bacteria
WOS IDWOS:000347761100032
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/9603
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Wang, Juan,Li, Qian,Qi, Rong,et al. Sludge bulking impact on relevant bacterial populations in a full-scale municipal wastewater treatment plant[J]. PROCESS BIOCHEMISTRY,2014,49(12):2258-2265.
APA Wang, Juan,Li, Qian,Qi, Rong,Tandoi, Valter,&Yang, Min.(2014).Sludge bulking impact on relevant bacterial populations in a full-scale municipal wastewater treatment plant.PROCESS BIOCHEMISTRY,49(12),2258-2265.
MLA Wang, Juan,et al."Sludge bulking impact on relevant bacterial populations in a full-scale municipal wastewater treatment plant".PROCESS BIOCHEMISTRY 49.12(2014):2258-2265.
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