Abstract
In this study, zeolite addition as a pretreatment step in a submerged membrane system was investigated. The effect of natural and modifi ed zeolite, modifi ed zeolite concentration, particle size fractionation of modifi ed zeolite and feed organic matter concentrations as well as turbidity were studied with synthetic solutions. Additionally, experiments were performed to evaluate the effect of modifi ed zeolite concentration and combination of zeolite and FeCl3with natural raw water. It was found that natural zeolite should be modifi ed prior to use for improving the performance as a pretreatment in the submerged membrane system. Also, it was observed that smaller particle sizes of zeolite improved the performance further. In contrast to turbidity, zeolite and organic matter concentrations have a considerable effect on membrane performance. Natural raw water caused nearly two-fold increase in the vacuum pressure in comparison to the synthetic water. However, addition of FeCl3in the presence of modifi ed zeolite compensated the high pressure increasing in the permeate line with raw water.
| Original language | English |
|---|---|
| Pages (from-to) | 201-210 |
| Number of pages | 10 |
| Journal | Desalination and Water Treatment |
| Volume | 9 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 2009 |
Funding
This research was supported by The Scientifi.c and Technological Research Council of Turkey (TÜBΙTAK) project number 106Y171. The authors would like to thank to Zena Membranes, Czechoslovakia for supplying the membranes.
| Funders | Funder number |
|---|---|
| Scientifi.c and Technological Research Council of Turkey | |
| TÜBΙTAK | 106Y171 |
Keywords
- Ferric chloride
- Organic matter removal
- Submerged membrane system
- Surface modifi cation
- Zeolite (clinoptilolite)
