Assessment of water treatment processes: detailed organic matter characterisation and membrane fouling indices at the Loddon Water Treatment Plant, Victoria, Australia

Khorshed, C., Vigneswaran, S., Kandasamy, J., Aryal, R. and Dharmapalan, D. (2011) Assessment of water treatment processes: detailed organic matter characterisation and membrane fouling indices at the Loddon Water Treatment Plant, Victoria, Australia. Water Science and Technology: Water Supply, 11 3: 274-280. doi:10.2166/ws.2011.040

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Author Khorshed, C.
Vigneswaran, S.
Kandasamy, J.
Aryal, R.
Dharmapalan, D.
Title Assessment of water treatment processes: detailed organic matter characterisation and membrane fouling indices at the Loddon Water Treatment Plant, Victoria, Australia
Journal name Water Science and Technology: Water Supply   Check publisher's open access policy
ISSN 1606-9749
1607-0798
Publication date 2011-01-01
Sub-type Article (original research)
DOI 10.2166/ws.2011.040
Volume 11
Issue 3
Start page 274
End page 280
Total pages 7
Place of publication London, United Kingdom
Publisher IWA Publishing
Language eng
Formatted abstract
Recent advances in membrane technology have led to its broad application, and reverse osmosis (RO) systems now represent the fastest growing segment of the desalination market. Its performance is hindered by membrane fouling. In this study pre-treatment methods to reduce RO fouling were investigated including flocculation, adsorption and ion exchange. Detailed organic characterisations were made in terms of florescence spectroscopy excitation emission matrix (EEM), UV254 absorbance and liquid chromatography-organic carbon detection (LCOCD). The different pre-treatment methods were assessed in terms of the fouling potential. This was quantified in terms of the modified fouling index measured using a dead-end cell micro-filtration (MF) unit. The existing pre-treatment of granular activated carbon (GAC) filter led to a good organic removal. Among the pre-treatment methods tested in the laboratory, purolite ion exchange/adsorption was found to be better than FeCl3 flocculation in terms of the amount as well as the wide range of organics removal. A pre-treatment of flocculation with Poly-ferric-silicate (PFSi) as flocculent gave a higher removal of organic matter compared to other pre-treatments tested. DOC was reduced from 11.5 to 4.25 mg/L, and it removed mostly the humic type substances.
Keyword Adsorption
Biofilter
Desalination
Flocculation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
Advanced Water Management Centre Publications
 
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Created: Fri, 10 Feb 2012, 21:09:22 EST by Dr Rupak Aryal on behalf of Advanced Water Management Centre