• Proceedings of the Membrane Society of Korea Conference
• /
• 2001.11a
• /
• pp.139-142
• /
• 2001

• Proceedings of the Membrane Society of Korea Conference
• /
• 2003.11a
• /
• pp.111-115
• /
• 2003

• Proceedings of the Membrane Society of Korea Conference
• /
• 2003.11a
• /
• pp.176-179
• /
• 2003

• Proceedings of the Zoological Society Korea Conference
• /
• 1994.10a
• /
• pp.266.1-266
• /
• 1994

No Abstract, See Full Text

• Proceedings of the Membrane Society of Korea Conference
• /
• 2000.11a
• /
• pp.153-155
• /
• 2000

• Proceedings of the Membrane Society of Korea Conference
• /
• 2000.04a
• /
• pp.30-31
• /
• 2000

• Proceedings of the Membrane Society of Korea Conference
• /
• 2001.05a
• /
• pp.135-138
• /
• 2001

Acrylic wastewater flux was discussed using modules of ultrafiltration hollow fiber and reverse osmosis spiral wound. The optimum backflushing times of membranes were decided and the degree of fouling was discussed with operating time. Permeate flux was decreased rapidly at 12hrs. Separation processes with ultrafiltration and reverse osmosis membranes were not suitable to remove COD and TDS. The improvement of pretreatment processes was needed.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
• /
• 2002.04a
• /
• pp.243-245
• /
• 2002

Brackish water desalination using reverse osmosis(RO) membrane is more useful and economic than sea water to solve the shortage of fresh water supply because of its low total dissolved solid(TDS) contents. Silica and humic acid in brackish water make serious fouling problems and cause the decline of permeate flux and increase of operating pressure. In this study, the experiments for removal of silica and humic acid were conducted with calcite particles to prevent membrane fouling and investigated the effect of pH of feed water Adsorption of silica to calcite was higher at pH=7.5 than 9.5 and removal rate was increased according to increase of initial concentration of silica. The effect of pH on adsorption of humic acid was not significant but at low initial concentration the adsorption of humic acid was enhanced at pH 7.5. The result of this study expect to apply to brackish water desalination experiment of flat-sheet reverse osmosis membrane.

• IE interfaces
• /
• v.12 no.4
• /
• pp.602-616
• /
• 1999

Recently, due to the primary emphasis of environmental problem, the proper selection of the membrane systems necessary for waste water treatment has been one of the critical issues in the industrial sector. This paper shows how an Analytic Hierarchy Process (AHP) model can be used for assessing the performance of selected membrane systems: ultrafiltration, microfiltration, reverse osmosis, and electrodialysis essential for waste water treatments. The final results show that ultrafiltration is the most attractive membrane system to use in a water recycling system, followed by microfiltration, reverse osmosis and electrodialysis. This is consistent with the information that we found with respect to the elements that were taken into consideration. Sensitivity analysis is also provided here.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.25 no.1
• /
• pp.64-69
• /
• 2011

A novel concept of the gridable desalination plant is to provide an operation management to enable an electricity plant operation cost reduction. Adjusting recovery rate responded to electricity price, an electricity plant operation cost can be saved. To show a suggested approach, the data of 10 [MIGD](Million Imperial Gallons per Day) SWRO testbed are used. The result shows that total cost reduction rate is calculated about 1.6[%] of annual total electric plant operation cost.