Fractionation of organic matters in sludge rejected by NF membrane
Resource
Desalination 234 (1-3): 386-392
Journal
Desalination
Journal Issue
234
Pages
386-392
Date Issued
2008
Date
2008
Author(s)
Abstract
Nanofiltration membrane bioreactor (NF-MBR) was proposed to provide quality effluent free of virus and most large organic substances. The dissolved organic matter (DOM) in soluble microbial products (SMP), loosely bound extracellular polymeric substances (LBEPS) and tightly bound extracellular polymeric substances (TBEPS) of wastewater sludge before and filtered through nanofiltration membrane were fractioned using size exclusion chromatography, characterized with ultraviolet absorbance at 230, 254 and 280 nm, dissolved oganic carbon (DOC) content, and excitation-emission-matrix (EEM) spectra. Except for long-chain organic acids, the membrane rejected most organic matters in SMP and LBEPS fractions. However, the membrane failed to reject fluorescent DOM from TBEPS at molecular weight of 3000-7000 Da. The content of TBEPS in the mixed liquor affected significantly the effluent quality in NF-MBR application. © 2008 Elsevier B.V. All rights reserved.
SDGs
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
110.pdf
Size
1.06 MB
Format
Adobe PDF
Checksum
(MD5):aa54ae8d267ada4459cbb8e5095c4497