Microbial community assembly and metabolic function in top layers of slow sand filters for drinking water production
文献类型：期刊论文
| 作者 | Chen, Lihua; Zhai, Yujia; van der Mark, Ed; Liu, Gang; van der Meer, Walter; Medema, Gertjan |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2021-04-20 |
| 卷号 | 294页码:- |
| 关键词 | Slow sand filters Top layers Schmutzdecke Microbial community assembly Predicted metabolic function Neutral community model |
| ISSN号 | 0959-6526 |
| 英文摘要 | Slow sand filters (SSFs) are widely applied to treat potable water; the removal of contaminants (e.g., particles, organic matter, and microorganism) occurs primarily in the top layer. However, the develop-ment of the microbial community and its metabolic function is still poorly understood. In the present study, we analyzed the microbial quantity and community of the influents sampled from the effluent of the last step (rapid sand filtration) and of the top layers of SSFs (Schmutzdecke, 0-2 cm, 4-6 cm, 8-10 cm) sampled near terminal head loss when the Schmutzdecke (SCM) was most developed in two full-scale drinking water treatment plants (DWTPs). The two DWTPs use the same artificially recharged groundwater source. The biomass in the filter, quantified by flow cytometric intact cell counts (ICC) and adenosine triphosphate (ATP), decreased rapidly along the depth till 8-10 cm (>1 log TCC; >75% ATP); the decrease was most pronounced from the SCM to the surface sand layer (0-2 cm), after which the biomass stabilized quickly at lower depths (2-10 cm). Remarkably, beta diversity showed that SSFs layers of the same depth in two DWTPs with distinctive filter age and plant location clustered together, which indicated their insignificant effects in shaping microbial communities in SSFs. The alpha diversity indices followed the trend of the biomass, suggesting more active and diverse communities in SCM layer. PICRUSt-based function prediction revealed significant over-representation of metabolism and degra-dation of complex organic matters (e.g., butanoate, propanoate, xenobiotic, D-Alanine, chloroalkene, and bisphenol) in SCM layer, the functional importance of which was confirmed by the co-occurrence pat-terns of the dominant taxa and metabolic functions. Using an island biogeography model, we found that microbial communities in SSFs were strongly assembled by selection (68 OTUs, 50.0% sequences), rather than by simple accumulation of the microbial communities in the influents (120 OTUs, 44.8% sequences). Our findings enhance the understanding of microbial community assembly and of metabolic function in the top layers of SSFs, and constitute a valuable contribution to optimizing the design and operation of biofilters in full-scale DWTPs. ? 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| WOS研究方向 | Green & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46234]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 作者单位 | 1.Univ Twente, Sci & Technol, POB 217, NL-7500 AE Enschede, Netherlands 2.KWR Water Res Inst, POB 1072, NL-3430 BB Nieuwegein, Netherlands 3.Dunea Water Co, POB 756, NL-2700 AT Zoetermeer, Netherlands 4.Oasen Water Co, POB 122, NL-2800 AC Gouda, Netherlands 5.Delft Univ Technol, Fac Civil Engn & Geosci, Dept Water Management, Sanit Engn, POB 5048, NL-2600 GA Delft, Netherlands 6.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Lihua,Zhai, Yujia,van der Mark, Ed,et al. Microbial community assembly and metabolic function in top layers of slow sand filters for drinking water production[J]. JOURNAL OF CLEANER PRODUCTION,2021,294:-. |
| APA | Chen, Lihua,Zhai, Yujia,van der Mark, Ed,Liu, Gang,van der Meer, Walter,&Medema, Gertjan.(2021).Microbial community assembly and metabolic function in top layers of slow sand filters for drinking water production.JOURNAL OF CLEANER PRODUCTION,294,-. |
| MLA | Chen, Lihua,et al."Microbial community assembly and metabolic function in top layers of slow sand filters for drinking water production".JOURNAL OF CLEANER PRODUCTION 294(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。