Reverse osmosis

Presentation on Reverse Osmosis including Process
Osmosis,Reverse Osmosis,Uses of RO Technology,Removal,Advantages,Disadvantage, by Rahul Rathod, Nagpur

1. Rahul S. Rathod M.Sc. Environmental Science (M)[phone] [phone] Email id : [email protected] REVERSE OSMOSIS Reverse Osmosis

2. Content Introduction Process Osmosis Reverse Osmosis Uses of RO Technology Removal Advantages Disadvantage

3. INTRODUCTION RO is a water purification technology that uses semi permeable membrane It works on the concept of diffusion RO is also known as hyperfiltration RO can remove many types of molecules and ions from solution

4. PROCESS

5. OSMOSIS Definition : The solvent naturally moves from an area of low solute concentration to an area of high solute concentration called osmosis

6. Reverse osmosis Definition: Reverse osmosis is the process of forcing a solvent from region of high solute concentration through semipermeable membrane to a region of low solute concentration by Appyling a pressure

7. Use of RO technology Drinking water purification Waste water purification Hydrogen production Maple syrup production in food industry RO used for production of deionised water

8. R emovals Removes Pesticides Removes salt Removes microorganisms Removes suspended solids Removes dissolved solids Removes toxic material

9. Advantages RO performs a separation without a phase change. Thus, the energy requirements are low.  RO systems are compact, and space requirements are less than with other desalting systems, e.g. distillation. Many RO systems are fully automated and designed to start-up and shutdown automatically. Thus, RO plants usually require little labour . Due to their modular design, maintenance is easy. Scheduled maintenance can be performed without shutting down the entire plant. The modular design also makes expansion an easy option.

10. Disadvantage Hardness not removed Does not remove dissolved gases Removes beneficial healthy minerals too Disposal of Concentrate  RO process cannot be applied without pretreatment