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Performance of submerged membrane – Ion exchange hybrid system with Purolite A502PS in treating reverse osmosis feed
- Source :
- Separation and Purification Technology. 122:24-31
- Publication Year :
- 2014
- Publisher :
- Elsevier BV, 2014.
-
Abstract
- The performance of ion exchanger Purolite A502PS in treating biologically treated sewage effluent (Reverse Osmosis feed) was evaluated in a submerged membrane ion exchange hybrid system (SMIHS). The experimental results showed that adding a small amount of Purolite A502PS of 0.5 g/L increased the organic removal of the submerged membrane reactor from less than 10% to above 40%. The homogeneous surface diffusion model (HSDM) could predict the adsorption kinetics of Purolite A502PS. A higher dose of Purolite A502PS in SMIHS led to better organic removal as well as reduced membrane resistance. After one hour of operation at a flux of 36 LMH, the amount of organic matter retained on the membrane surface decreased from 2.11E-9 kg/m2 s to 8.25E-10 kg/m 2 s when 1 g/L of Purolite A502PS was added into the submerged membrane reactor. Although the increase of membrane flux from 36 L/m2 h (LMH) to 60 LMH did not have much effect on organic removal, more organics were adsorbed onto the membrane surface. This led to a higher transmembrane pressure (TMP) of 12 kPa in the SMIHS after eight hours operation at a flux 60 LMH. The increase in TMP was approximately four times higher than that at a flux of 36 LMH.© 2013 Elsevier B.V. All rights reserved.
Details
- ISSN :
- 13835866
- Volume :
- 122
- Database :
- OpenAIRE
- Journal :
- Separation and Purification Technology
- Accession number :
- edsair.doi.dedup.....a9f7c2ab486b20480b30da6295abb52e