fulltext.study @t Gmail

Performance of submerged anaerobic membrane bioreactor at different SRTs for domestic wastewater treatment

Paper ID Volume ID Publish Year Pages File Format Full-Text
23564 43452 2013 9 PDF Available
Title
Performance of submerged anaerobic membrane bioreactor at different SRTs for domestic wastewater treatment
Abstract

Three submerged anaerobic membrane bioreactors (SAnMBR) with solids retention times (SRTs) of 30, 60 and 90 d were set up for domestic wastewater treatment. Total COD removal rates higher than 83% were achieved. Maximum biogas production was 0.5 L CH4 d−1 (0.010 L CH4 (g MLVSS)−1 d−1; MLVSS: mixed liquor volatile suspended solids) at a SRT of 90 d. A longer SRT benefited biomass accumulation and biogas production due to enhanced dominancy of methanogens. With the SRT increasing from 30 to 90 d, enhancement of hydrolysis from 35 to 56% was identified as the major reason for the better efficient acidification and methanogenesis observed. Best treatment performance and membrane fouling control were observed for the SAnMBR operated at a SRT of 60 d. Soluble microbial products or specific soluble microbial products that accumulated with SRT decrease from 60 to 30 d led to a faster membrane fouling. With an increase of SRT from 60 to 90 d, higher mixed liquor suspended solids concentration caused more particle deposition on the membrane surface, while more soluble microbial products or specific soluble microbial products was attributed to more metabolism products generation.

► We studied performance of submerged anaerobic MBR for domestic wastewater treatment. ► SRT impact on COD removal, biomass concentration, biogas production and membrane fouling studied. ► Longer SRT benefited biomass accumulation and biogas production. ► Best treatment performance and membrane fouling control observed at a SRT of 60 d. ► SMP accumulated with SRT decrease from 60 to 30 d led to faster membrane fouling.

Keywords
Anaerobic membrane bioreactor; Domestic wastewater treatment; Biogas generation; Membrane fouling; Soluble microbial products; Extracellular polymeric substances
First Page Preview
Performance of submerged anaerobic membrane bioreactor at different SRTs for domestic wastewater treatment
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 164, Issue 1, 10 March 2013, Pages 82–90
Authors
, , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us