Sludge bulking impact on relevant bacterial populations in a full-scale municipal wastewater treatment plant
文献类型：期刊论文
| 作者 | Yang, Min
|
| 刊名 | PROCESS BIOCHEMISTRY
 |
| 出版日期 | 2014 |
| 卷号 | 49期号:12页码:2258-2265 |
| 关键词 | Wastewater treatment Sludge bulking Filamentous bacteria Microbial growth Nutrient removal Relevant bacteria |
| ISSN号 | 1359-5113 |
| 中文摘要 | We 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. |
| WOS记录号 | WOS:000347761100032 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9603]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Yang, Min. Sludge bulking impact on relevant bacterial populations in a full-scale municipal wastewater treatment plant[J]. PROCESS BIOCHEMISTRY,2014,49(12):2258-2265. |
| APA | 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 | Yang, Min."Sludge bulking impact on relevant bacterial populations in a full-scale municipal wastewater treatment plant".PROCESS BIOCHEMISTRY 49.12(2014):2258-2265. |
入库方式： OAI收割
来源：生态环境研究中心
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