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Membrane Separations
2xxx1xxx65 Sin song yi
2008105463 Ahn joon sung
2007105316 Lee woo yong
Separation Process
seawater desalination
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Contents
1. Choice of Subject
2. Seawater Desalination
3. Process of Seawater Desalination
4. Reverse Osmosis
5. Reference
Speaker : Sin song yi
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Choice Of Subject Reverse Osmosis
Desalination of
Ground water
Produce ultra-pure water
Waste water disposal
Food industry
Other industries
Speaker : Sin song yi
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Speaker : Sin song yi
System
energy consumption
Strength
Weakness
Evaporation
18~25
[kWh/㎥]
High purity of Produced water
Energy intensive
Electro-dialysis
18[kWh/㎥]
Easy to respond to changes in temperature
Energy inten…(생략)
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ion of solution
R : Gas constant
T : Temperature
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Reverse Osmosis
Reverse Osmosis
High concentration
Low concentration
Semipermeable membrane
pressure
When put on high-pressure than osmotic pressure,
The water in high-concentration side is moves to low-concentration side.
Osmotic pressure : 20 bar / Reverse osmotic pressure : 60 ~ 70 bar.
Speaker : Ahn joon sung
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Reverse Osmosis
출처 : http://www.ecofuturenetwork.co.kr/
Speaker : Ahn joon sung
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Speaker : Ahn joon sung
Reverse Osmosis
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Reverse Osmosis
Speaker : Ahn joon sung
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High water Flux & salt Rejection
High Strength
Ability to form thin barrier
Chemical stability in high pH
Long durability of membrane
Tolerance to microorganism
Wide range of operation & Low price
Reverse Osmosis Membrane
for Seawater Desalination
Material of membrane
Crosslinked aromatic polyamide
Aromatic polyamide
Arylkyl polyamide/polyurea
Cellulose
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