PMID- 21112138 OWN - NLM STAT- MEDLINE DCOM- 20110602 LR - 20191210 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 186 IP - 1 DP - 2011 Feb 15 TI - Simultaneous methane production and wastewater reuse by a membrane-based process: evaluation with raw domestic wastewater. PG - 383-9 LID - 10.1016/j.jhazmat.2010.11.014 [doi] AB - In this study, a membrane-based process was applied to simultaneously reclaim methane and generate reused water from raw domestic wastewater. The system was comprised of up-flow anaerobic sludge fixed bed (UAFB), anoxic sink (AS) and aerobic membrane bioreactor (MBR). The hydraulic retention time of UAFB (HRT(U)) was gradually shortened from 8h to 6h, 3h and to 1h, while the HRT of AS and MBR kept at 8 h. It is found that HRT(U) of 3h was more suitable for the balancing production of biogas and volatile fatty acids (VFAs), and the VFAs served as carbon source for denitrification. The trans-membrane pressure (TMP) of the MBR kept lower than 0.04 MPa without wash or change of membrane sheet, however, the scanning electron microscopy (SEM) analysis indicated that microbes attached to the inner-surface of membrane, causing irreversible fouling after 133-day operation. The denaturing gradient gel electrophoresis (DGGE) profiles of amplified 16S rDNA gene fragments proved that more functional bacteria and higher microbial diversity emerged at HRT(U) of 3h and 1h. Most bacteria belonged to Betaproteobacteria and were responsible for carbon and nitrogen removal. CI - Copyright (c) 2010 Elsevier B.V. All rights reserved. FAU - Gao, Da-wen AU - Gao DW AD - State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, China. dawengao@gmail.com FAU - An, Rui AU - An R FAU - Tao, Yu AU - Tao Y FAU - Li, Jin AU - Li J FAU - Li, Xin-xin AU - Li XX FAU - Ren, Nan-qi AU - Ren NQ LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101111 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (DNA Primers) RN - 0 (Membranes, Artificial) RN - 0 (Water Pollutants) RN - OP0UW79H66 (Methane) SB - IM MH - Bacteria/genetics/metabolism MH - Base Sequence MH - DNA Primers MH - Electrophoresis, Polyacrylamide Gel MH - *Membranes, Artificial MH - Methane/*biosynthesis MH - Microscopy, Electron, Scanning MH - Polymerase Chain Reaction MH - Water Pollutants/*isolation & purification EDAT- 2010/11/30 06:00 MHDA- 2011/06/03 06:00 CRDT- 2010/11/30 06:00 PHST- 2010/08/18 00:00 [received] PHST- 2010/11/03 00:00 [revised] PHST- 2010/11/03 00:00 [accepted] PHST- 2010/11/30 06:00 [entrez] PHST- 2010/11/30 06:00 [pubmed] PHST- 2011/06/03 06:00 [medline] AID - S0304-3894(10)01424-X [pii] AID - 10.1016/j.jhazmat.2010.11.014 [doi] PST - ppublish SO - J Hazard Mater. 2011 Feb 15;186(1):383-9. doi: 10.1016/j.jhazmat.2010.11.014. Epub 2010 Nov 11.