Reverse Osmosis Water System And Its Technologies - PowerPoint PPT Presentation

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Reverse Osmosis Water System And Its Technologies

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  1. Reverse Osmosis Water System And Its Technologies

  2. Chemistries and Physics of Water Purification

  3. Contaminants in Water • Water Purification Technologies

  4. Contaminants In Water

  5. Water Purification Technologies

  6. Water Purification Technologies Ultra filtration Ultraviolet Storage Tank Distribution Loops Distillation • Filtration • Chlorine removal • Scale Control • Reverse Osmosis • Ion Exchange

  7. Filtration • Depth Filters - Entrapment • Screen Filters - Sieving, • Membranes

  8. Depth Filter • Media • Cotton Fibers, Glass Fibers • Polypropylene, Nylon • Filaments, Sand Grains • Pore Rating • Nominal (98% Removal) • Range • 0.5-1000um or combinations • Thickness • 10-30mm

  9. Membrane Micro Filter • Media • Nylon, • Teflon, Cellulose • Esters • Pore Rating • Absolute (100% • Removal) • Range • 0.1 to 10 um • Thickness • 150um

  10. Chlorine Removal Activated Carbon • Raw Materials • Coconut Shell, • Wood, Lignite • Oil / Plastic • Activation • Heat, Chemical • Activation generates a highly porous structure with a large surface area for Wood, Lignite. • Surface area • 1000 m2 /gram • Activated Carbon • Bead Remove Chlorine Remove Organics

  11. Sodium Bisulfite • Sodium Bisulfite (NaHSO3) is a reducing agent capable of dechlorinating the feed water to a Reverse Osmosis System. • Dechlorination reactions NaHSO3+ CL2+ H2O NaHSO4+ 2HCl • 1ppm of chlorine (CL2) requires 1.46 ppm of NaHSO3 • To ensure complete Dechlorination Add 10% excess of sodium bisulphite

  12. Ion Exchange

  13. Ion Exchange Process

  14. Ion Exchange Regeneration

  15. Ion Exchange Regeneration

  16. Low pressure High pressure Feed water under pressure Semi-permeable membrane Purified water raw water Reject water Permeate water drain or recycle Reverse osmosis (RO) theory

  17. Thin Film Composite Membrane Thin Film Layer Support Structure

  18. Reverse Osmosis

  19. Reverse Osmosis

  20. Reverse Osmosis • Performance • 95 - 99% Rejection of Inorganic Ions • 99% Rejection of Organics • 99% Rejection of Particles and Microorganisms • Recovery • 10 - 65% of Feed Water

  21. Ion Exchange

  22. Mixed Bed Exchange Process

  23. Mixed Bed Exchange Process

  24. Mixed Bed Regeneration

  25. Mixed Bed Regeneration

  26. Electro Deionization

  27. Electro Deionization

  28. Ultra-Filtration • Can be used for WFI or for Water For Final Rinsing for parenteral manufacturing (if permitted) • Removes organic contaminants, such asendotoxins • Operation at 80°C, and sterilization at 121 °C

  29. Ultra-Violet

  30. Oxidation of Organic Compound

  31. Oxidation of Organic Compound • HCHO + 2OH. UV HCOOH + H2O Formaldehyde Formic Acid + Water • HCOOH+2OH. UV CO2 + 2H2O FORMIC ACID CORBONDIOXIDE+WATER

  32. Storage Tank • Design Considerations • Sized with Make-Up system • Store water protected from bacterial growth • Vent filter • Sanitary Overflow • Tank UV light or Spray Ball • Conical bottom • Steam or Ozone sterilization • Rupture Disk should always have monitor • Smaller the better

  33. Hydrophobic air filter & burst disc Feed Water Cartridge filter 1 µm Spray ball Water must be kept circulating Optional in-line filter 0,2 µm UV light Outlets Hygienic pump Typical Water Storage And Distribution Schematic

  34. Distribution Loops

  35. D Flow direction arrows on pipes are important Deadleg section X <2D If D=25mm & distance X isgreater than 50mm, we have a dead leg that is too long. Sanitary Valve Water scours deadleg Distribution Loops • There should be no dead legs Ball valves are unacceptable Bacteria can grow when the valve is closed The water is contaminated as it passes through the valve Stagnant water inside valve

  36. Distribution Loops

  37. Distillation

  38. Thank You For AttendingSaima Muzaffar2nd February, 2012