논문실적
| Pretreatment characteristics of the seawater reverse osmosis (SWRO) process at high temperature |
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학술지명 IWA Flotation 2012
저자 Zhao,박현진,권순범,독고석
발표일 2012-10-29
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The bubble characteristics in dissolved air flotation (DAF), used as a SWRO pretreatment process, were studied in synthetic seawater at 20C and 40C. The flux of an RO membrane was monitored after dosing the synthetic seawater with coagulants at different temperatures. Results showed that BVC increases as the operating pressure increases and as the salt concentration decreases. The average bubble size in synthetic seawater is 8% greater than in DI water at 20C. However, the bubble size released at 40C is far smaller than that at 20C. The addition of a ferric salt is effective for turbidity removal in synthetic seawater at 20C; it is more effective than alum. When synthetic seawater was dosed with a ferric salt, the RO membrane flux increased by 27% at 40C. |
