Abstract:
:It was found that with replenishment, powdered activated carbon (PAC) in the membrane bioreactor (MBR) would develop biologically activated carbon (BAC) which could enhance filtration performance of a conventional MBR. This paper addresses two issues (i) effect of PAC size on MBR (BAC) performance; and (ii) effect of sludge retention time (SRT) on the MBR performance with and without PAC. To interpret the trends, particle/floc size, concentration of mixed liquor suspended solid (MLSS), total organic carbon (TOC), short-term filtration properties and transmembrane pressure (TMP) versus time are measured. The results showed improved fouling control with fine, rather than coarse, PAC provided the flux did not exceed the deposition flux for the fine PAC. Without PAC, the longer SRT operation gave lower fouling at modest fluxes. With PAC addition, the shorter SRT gave better fouling control, possibly due to greater replenishment of the fresh PAC.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Ng CA,Sun D,Bashir MJ,Wai SH,Wong LY,Nisar H,Wu B,Fane AGdoi
10.1016/j.biortech.2013.03.129subject
Has Abstractpub_date
2013-06-01 00:00:00pages
38-47eissn
0960-8524issn
1873-2976pii
S0960-8524(13)00497-5journal_volume
138pub_type
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