Novel anaerobic membrane bioreactor (AnMBR) design for wastewater treatment at long HRT and high solid concentration

Berkessa, Y, Yan, B, Li, T, Tan, M, She, Z, Jegatheesan, V, Jiang, H and Zhang, Y 2018, 'Novel anaerobic membrane bioreactor (AnMBR) design for wastewater treatment at long HRT and high solid concentration', Bioresource Technology, vol. 250, pp. 281-289.


Document type: Journal Article
Collection: Journal Articles

Title Novel anaerobic membrane bioreactor (AnMBR) design for wastewater treatment at long HRT and high solid concentration
Author(s) Berkessa, Y
Yan, B
Li, T
Tan, M
She, Z
Jegatheesan, V
Jiang, H
Zhang, Y
Year 2018
Journal name Bioresource Technology
Volume number 250
Start page 281
End page 289
Total pages 9
Publisher Elsevier
Abstract Performance of two novel designed anaerobic membrane bioreactor (AnMBRs) for wastewater treatment at long hydraulic retention time (HRT, 47 days) and high sludge concentration (22 g·L -1 ) was investigated. Results showed steady chemical oxygen demand (COD) removal ( > 98%) and mean biogas generation of 0.29 LCH 4 ·g -1 COD. Average permeates flux of 58.70 L·m -2 ·h -1 and 54.00 L·m -2 ·h -1 were achieved for reactors A and B, respectively. On top of reactor configuration, long HRT caused biofilm reduction by heterotrophic bacteria Chloroflexi resulting in high membrane flux. Mean total membrane resistances (2.23 × 10 9 m -1 ) and fouling rates (4.00 × 10 8 m -1 ·day -1 ) of both reactors were low suggesting better membrane fouling control ability of both AnMBRs. Effluent quality analysis showed the effluent soluble microbial products (SMP) were dominated by proteins compared to carbohydrates, and specific ultraviolet absorbance (SUVA) analysis revealed effluent from both reactors had low aromaticity with SUVA < 1 (L·mg -1 ·m -1 ) except for the first ten days.
Subject Water Treatment Processes
Keyword(s) Anaerobic membrane bioreactor
Effluent quality
HRT
Membrane fouling
Mixed liquor suspended solid
DOI - identifier 10.1016/j.biortech.2017.11.025
Copyright notice © 2017 Elsevier Ltd. All rights reserved.
ISSN 0960-8524
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