Reverse Osmosis for Water PurificationTE 552 Nonwoven Product Development

Neslihan Yagmur

What is Reverse Osmosis?

• Reverse osmosis (RO) is a separation process that uses pressure to force a solvent through a membrane, which retains the solute on one side and allows the pure solvent to pass to the other side.

Advantages of RO

• Improves taste, odor and appearance• Highly effective purification process

remove the pollutants• Consumes no energy

Advantages of RO

• Flushes away pollutants, does not collect them

• Easy to keep clean• Low production cost

General Aspects to RO Systems

Diagram of a Reverse Osmosis System with Basic Components

Diagram of a Reverse Osmosis System with Basic Components

1. Cold Water Line Valve

2. Pre-Filter

3. Reverse Osmosis Membrane

4. Post filter

5. Automatic Shut-Off Valve

6. Check Valve

7. Flow Restrictor

8. Storage Tank

9. Faucet

10. Drain line

RO system taskTypes of membranes

From Tap Water to Pure Water

RO Membranes

Membranes

1.RO Membranes

3. Spiral Membranes

2.Hollow Fiber

Membranes

1. RO Membranes

A. Cellulose-

Based Membranes

B.

Thin Film Composite Membranes

A. Cellulose-Based Membranes

• casting a thin film acetone-based solution of cellulose acetate (CA) polymer

• the first commercially RO membrane

B. Thin Film Composite Membranes

• Thin film composite (TFC) polyamide membranes are consisted of a porous support layer and a thin film dense layer

2. Hollow Fiber Membranes

• Bundle of fibers replace in porous pipe

Spiral Membranes

How RO System works?

Design Considerations

Design Considerations

1. Quality of input water

2. Required quality of pure water

3. Required quantity of output water

Usage Areas

• Industry– Feed water treatment for Steam Boilers,– Pharmaceutical– Food and Beverage,– bottled water productions.

• Medical sectors– Hemodialysis treatment,– Laboratories.

References

• Sagle, A., Freeman, B., Fundamentals of Membranes for Water Treatment, University of Texas at Austin

• U. S. Patent 4978550• www.espwaterproducts.com• Yaşa, E., Ters Ozmoz (TO) Su Arıtma Tekniği ve Muhtelif

Kullanım Alanları, 2010

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