Greywater: Understanding biofilm bacteria succession, pollutant removal and low sulfide generation in small diameter gravity sewers
文献类型：期刊论文
| 作者 | Zheng, Tianlong; Li, Wenkai; Ma, Yingqun; Liu, Junxin; Ren, Junpeng |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2020-09-20 |
| 卷号 | 268页码:1-13 |
| 关键词 | Biofilm bacteria Greywater Pollutant Small diameter gravity sewer Sulfide |
| ISSN号 | 0959-6526 |
| 英文摘要 | Separate collection of greywater by small diameter gravity sewers (SDGS) has been widely used to achieve greywater treatment and recycling. Bacteria in SDGS biofilms might have the ability to pretreat pollutant and generate sulfide causing impacts on sewer operation. In this study, SDGS reactors coupled with quantitative polymerase chain reactions and Illumina sequencing were operated for ninety days to study the bacterial characteristics and pollutant removal ability. Results indicated that biofilm thickness (mainly 1040-2120 mu m), bacterial count (approximately 4 x 10(8) cells/cm(2)), bacterial communities, and functional bacteria distribution changed regularly in the greywater SDGS biofilms. Proteobacteria (60.39 +/- 12.31%) and Bacteroidetes (26.22 +/- 13.94%) were the predominant phyla in the SDGS biofilms, while Pseudomonas (14.47 +/- 6.59%) and Enterobacter (6.01 +/- 2.01%) abundance were relatively stable. Sulfate-reducing bacteria (SRB) and denitrifying bacteria inhabited the greywater SDGS biofilms and the number of SRB was not dependent on the dissolved oxygen concentration but had a linear relationship with biofilm thickness. Greywater SDGS showed the ability to decrease the chemical oxygen demand stably during the study but its removal of nitrogen and phosphorus was indeterminate. This research established that the low sulfide concentrations generated by greywater SDGS (<0.08 mg L-1.km(-1)) make these systems beneficial for sewer operation and maintenance. The main novelty of this study is the indepth analysis of the bacterial community and pollutant removal in greywater SDGS and the confirmation of low sulfide generation in greywater SDGS which is beneficial for the sustainable development of sewer systems. (c) 2020 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45041]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 推荐引用方式 GB/T 7714 | Zheng, Tianlong,Li, Wenkai,Ma, Yingqun,et al. Greywater: Understanding biofilm bacteria succession, pollutant removal and low sulfide generation in small diameter gravity sewers[J]. JOURNAL OF CLEANER PRODUCTION,2020,268:1-13. |
| APA | Zheng, Tianlong,Li, Wenkai,Ma, Yingqun,Liu, Junxin,&Ren, Junpeng.(2020).Greywater: Understanding biofilm bacteria succession, pollutant removal and low sulfide generation in small diameter gravity sewers.JOURNAL OF CLEANER PRODUCTION,268,1-13. |
| MLA | Zheng, Tianlong,et al."Greywater: Understanding biofilm bacteria succession, pollutant removal and low sulfide generation in small diameter gravity sewers".JOURNAL OF CLEANER PRODUCTION 268(2020):1-13. |
入库方式： OAI收割
来源：生态环境研究中心
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