Multi-parametric assessment of biological stability of drinking water produced from groundwater: Reverse osmosis vs. conventional treatment
文献类型：期刊论文
| 作者 | Sousi, Mohaned; Liu, Gang; Salinas-Rodriguez, Sergio G.; Chen, Lihua; Dusseldorp, Jos; Wessels, Peter; Schippers, Jan C.; Kennedy, Maria D.; van der Meer, Walter |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2020-11-01 |
| 卷号 | 186页码:1-11 |
| 关键词 | Biological stability Bacterial growth potential (BGP) Reverse osmosis (RO) Limiting nutrient Trace elements Multi-parametric approach |
| ISSN号 | 0043-1354 |
| 英文摘要 | Although water produced by reverse osmosis (RO) filtration has low bacterial growth potential (BGP), post-treatment of RO permeate, which is necessary prior to distribution and human consumption, needs to be examined because of the potential re-introduction of nutrients/contaminants. In this study, drinking water produced from anaerobic groundwater by RO and post-treatment (ion exchange, calcite contactors, and aeration) was compared with that produced by conventional treatment comprising (dry) sand filtration, pellet softening, rapid sand filtration, activated carbon filtration, and UV disinfection. The multiparametric assessment of biological stability included bacterial quantification, nutrient concentration and composition as well as bacterial community composition and diversity. Results showed that RO permeate remineralised in the laboratory has an extremely low BGP (50 +/- 12 x 10(3) ICC/mL), which increased to 130 +/- 10 x 10(3) ICC/mL after site post-treatment. Despite the negative impact of post-treatment, the BGP of the finished RO-treated water was > 75% lower than that of conventionally treated water. Organic carbon limited bacterial growth in both RO-treated and conventionally treated waters. The increased BGP in RO-treated water was caused by the re-introduction of nutrients during post-treatment. Similarly, OTUs introduced during post-treatment, assigned to the phyla of Proteobacteria and Bacteroidetes (75-85%), were not present in the source groundwater. Conversely, conventionally treated water shared some OTUs with the source groundwater. It is clear that RO-based treatment achieved an extremely low BGP, which can be further improved by optimising post-treatment, such as using high purity calcite. The multi-parametric approach adopted in this study can offer insights into growth characteristics including limiting nutrients (why) and dominating genera growing (who), which is essential to manage microbiological water quality in water treatment and distribution systems. (c) 2020 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/) |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45329]  |
| 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 |
| 推荐引用方式 GB/T 7714 | Sousi, Mohaned,Liu, Gang,Salinas-Rodriguez, Sergio G.,et al. Multi-parametric assessment of biological stability of drinking water produced from groundwater: Reverse osmosis vs. conventional treatment[J]. WATER RESEARCH,2020,186:1-11. |
| APA | Sousi, Mohaned.,Liu, Gang.,Salinas-Rodriguez, Sergio G..,Chen, Lihua.,Dusseldorp, Jos.,...&van der Meer, Walter.(2020).Multi-parametric assessment of biological stability of drinking water produced from groundwater: Reverse osmosis vs. conventional treatment.WATER RESEARCH,186,1-11. |
| MLA | Sousi, Mohaned,et al."Multi-parametric assessment of biological stability of drinking water produced from groundwater: Reverse osmosis vs. conventional treatment".WATER RESEARCH 186(2020):1-11. |
入库方式： OAI收割
来源：生态环境研究中心
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