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Influence of sludge retention time on membrane fouling and bioactivities in membrane bioreactor system

Paper ID Volume ID Publish Year Pages File Format Full-Text
36542 45136 2005 8 PDF Available
Title
Influence of sludge retention time on membrane fouling and bioactivities in membrane bioreactor system
Abstract

Sludge retention time (SRT) can produce significant effects on biomass properties in a membrane bioreactor (MBR) system. In this study, the membrane separation process was coupled to a sequencing batch reactor (SBR), which is one of the biological nutrient removal (BNR) processes, and the influence of SRT on membrane fouling and biological activity was investigated. Membrane fouling increased with SRT since sludge particles were more severely deposited on the membrane surface at longer SRT. Regardless of SRT change, COD removal efficiency was high and stable (over 92%) throughout the experiment. Nitrogen removal efficiency also attained a high treatment level. However, it was not proportioned to SRT increase and rather decreased at the longest SRT. Phosphorus removal decreased at prolonged SRT since excess sludge was reduced. Biological activity such as specific oxygen uptake rate (SOUR), specific nitrification rate (SNR), and specific denitrification rate (SDNR) did not increase with SRT but decreased at prolonged SRT.

Keywords
Membrane bioreactor (MBR); Sequencing batch reactor (SBR); Membrane fouling; Sludge retention time (SRT); Specific oxygen uptake rate (SOUR); Specific nitrification rate (SNR); Specific denitrification rate (SDNR)
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Influence of sludge retention time on membrane fouling and bioactivities in membrane bioreactor system
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 40, Issue 7, June 2005, Pages 2393–2400
Authors
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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