| Title | Assessing the performance and microbial structure of biofilms adhering on aerated membranes for domestic saline sewage treatment |
| Authors | Tian, Hailong Liu, Jie Feng, Tengteng Li, Haifeng Wu, Xiaolei Li, Baoan |
| Affiliation | Henan Univ Technol, Coll Bioengn, Zhengzhou 450001, Peoples R China. Chongqing Jiaotong Univ, Coll Architecture & Urban Planning, Chongqing 400074, Peoples R China. Shandong Acad Environm Sci, Jinan 250013, Peoples R China. Tianjin Univ, State Key Lab Chem Engn, Tianjin 300072, Peoples R China. Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China. Tianjin Univ, Tianjin Key Lab Membrane Sci & Desalinat Technol, Tianjin 300072, Peoples R China. Peking Univ, Coll Engn, Dept Energy & Resources Engn, Beijing 100871, Peoples R China. Tianjin Univ, State Key Lab Chem Engn, Tianjin 300072, Peoples R China. Li, BA (reprint author), Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China. Li, BA (reprint author), Tianjin Univ, Tianjin Key Lab Membrane Sci & Desalinat Technol, Tianjin 300072, Peoples R China. Xiaolei, L (reprint author), Peking Univ, Coll Engn, Dept Energy & Resources Engn, Beijing 100871, Peoples R China. |
| Keywords | WASTE-WATER TREATMENT AMMONIA-OXIDIZING ARCHAEA DENITRIFYING SULFIDE REMOVAL REACTOR MABR SYSTEM SP-NOV. FAMILY HYPHOMICROBIACEAE PARTIAL NITRIFICATION GEN. NOV. BIOREACTOR DIVERSITY |
| Issue Date | 2017 |
| Publisher | RSC ADVANCES |
| Citation | RSC ADVANCES.2017,7(44),27198-27205. |
| Abstract | The presence of high salt concentration has always been considered as a common inhibitor that hampers effective municipal wastewater treatment. In this study, a bench-scale membrane-aerated biofilm reactor (MABR) was first introduced to degrade and remove the carbon and nitrogen pollutants under saline conditions. At influent concentrations of 220 mg CODCr per L and 32 mg NH4-N per L with an HRT of 24 h and salinity level of 3%, the reactor demonstrated excellent CODCr, NH4-N and TN removal efficiencies of 92.8%, 98.5% and 70.6%, respectively. Alphaproteobacteria, Anaerolineae, Gammaproteobacteria, Betaproteobacteria and Flavobacteria were the major functional classes in bacterial community. Candidatus Nitrososphaera exhibited stronger salt resistance compared with Nitrosomonas, and was probably the dominant nitrifier. Although the microbial diversity (Shannon-Wiener index) changed slightly along with the increasing salinity from 0.4% to 3%, the community composition substantially altered mainly through a fluctuant process via the growth of halophilic bacteria and the reduction of halotolerant bacteria. The halotolerant bacteria was mainly affiliated with Anaerolineae and Ignavibacteria while the halophilic bacteria mainly belonged to Alphaproteobacteria and Anaerolineae. The succession ensured a stable performance of the system under salty environments. This research suggests that MABR has the potential to effectively treat domestic saline sewage. |
| URI | http://hdl.handle.net/20.500.11897/476030 |
| ISSN | 2046-2069 |
| DOI | 10.1039/c7ra03755d |
| Indexed | SCI(E) |
| Appears in Collections: | 工学院 |
