Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Dissolved ozone destruction by uv by chemtronics

1,097 views

Published on

Sizing & Calculation - Ultra Violet Radiation is used to Destruct Residual Dissolved Ozone.
Residual Ozone Destruction In Pharmaceutical Process Water. UV Energy is used to Destruct unused ozone in Aquaculture & hatcheries.

Published in: Technology
  • Be the first to comment

Dissolved ozone destruction by uv by chemtronics

  1. 1. 1 Using U V Energy
  2. 2. - Index 2 • What is UV Radiation • How It Works for Ozone Destruction • What is UV Dose • How To Size UV System • What are the Components of UV System • Process Flow Diagram • Models Of UV System • References
  3. 3. - What is UV radiation? 3 • UV stands for Ultraviolet • UV is invisible spectrum of light • UV has three sub category - UV – A ; UV – B ; UV – C • UV – C has 253.7 nm peak wavelength • UV – C is also called as Germicidal • UV – C has major three Properties – Germicidal | Ozone Destruction | Advance Oxidation Process [AOP]
  4. 4. - How it Works for Ozone Destruction? 4 • Ozone is a tri atomic compound of Oxygen “O” • The two atomic compound is Oxygen “O₂” • This form of Oxygen “O₂” is very stable • Ozone is “O₃” & one “O” is very unstable. • UV – C has an energy. • When UV-C falls on “O₃” the unstable “O” is very easily be separated, breaking the inter molecular bond • This “O” combines with another free “O” and becomes stable “O₂” • This is the way “O₃” in the water is destructed [converted] from “O₃” to “O₂”.
  5. 5. - What is UV Dose? 5 • UV dose is a Product of UV intensity at 253.7 nm & Contact time [Exposure Time]. • UV Dose = UV Intensity X Contact Time [ µW/cm² X Sec. ] • Measured in “ Microwatts-Seconds per Cm²” [µW-S/cm²] or J/m² or mJ/cm² • Example = 100 J/m² = 10 mJ/cm² = 10 mW-S/cm² = 10,000 µW-S/cm²
  6. 6. - How to Size UV for Ozone Destruction? 6 • There are three factors to size/design UV System – 1. UV Dose 2. % UVT 3. Ozone Concentration • 1. UV Dose is intensity of UV light & contact time • 2. % UVT is the % of UV light penetrating water medium, at given distance. • 3. Ozone concentration is the residual un-dissolved Ozone in the medium [water]
  7. 7. - Components Of UV System 7 • UV Reactor – SS 316 – Sea Water & Ozone Compatible • UV Driver / Ballast – Electronics • High % UVT isolator – Quarts Jacket • Rubber Seals & O-rings – Sea water + UV Radiation + Ozone Compatible
  8. 8. - Process Flow Diagram 8 Ozonated Water Storage Tank Ozone Destruct UVFeed Water Pump Ozone Free Water To Culture Tank ORP SensorCirculation Loop Single Pass
  9. 9. - Model Selection – Example 1 – 300 W UV Lamp 9 Std. UV Lamp Intensity : 9.0 mW/cm² @ 55.0 mm of 300 W High Intensity Amalgam Lamp UV Reactor Volume : 30 – 32 L % UVT : 80 % Ozone Concentration : 0.4 ppm [G/m³] Ozone Destruct UV Dose : 120 mW-S/cm² [min.] Contact Time : 120 mW-S/cm² / 9.0 mW/cm² = 13.3 Sec. Peak Ozonated [0.4 ppm] : Reactor Volume [L] / Contact Time [Sec.] water Flow Rate = 30 L / 13.3 Sec.= 2.25 LPS = 8.1 m³/hr (300 w UV Lamp)
  10. 10. - Model Selection – Cont... Example 2 - 120 W UV Lamp 10 Std. UV Lamp Intensity : 3.0 mW/cm² @ 50.0 mm of 120 W UV Lamp UV Reactor Volume : 20 – 22 L % UVT : 80 % Ozone Concentration : 0.4 ppm [G/m³] Ozone Destruct UV Dose : 120 mW-S/cm² [min.] Contact Time : 120 mW-S/cm² / 3.0 mW/cm² = 40.0 Sec. Peak Ozonated [0.4 ppm] : Reactor Volume [L] / Contact Time [Sec.] water Flow Rate = 20 L / 40.0 Sec.= 0.5 LPS = 1.8 m³/hr (120 w UV Lamp)
  11. 11. - Model Selection – Cont... Example 3 – 80 W UV Lamp 11 Std. UV Lamp Intensity : 2.0 mW/cm² @ 40.0 mm of 80 W UV Lamp UV Reactor Volume : 15 – 18 L % UVT : 80 % Ozone Concentration : 0.4 ppm [G/m³] Ozone Destruct UV Dose : 120 mW-S/cm² [min.] Contact Time : 120 mW-S/cm² / 2.0 mW/cm² = 60.0 Sec. Peak Ozonated [0.4 ppm] : Reactor Volume [L] / Contact Time [Sec.] water Flow Rate = 15 L / 60.0 Sec.= 0.25 LPS = 0.9 m³/hr (80 w UV Lamp)
  12. 12. - References 12 1. http://www.spartanwatertreatment.com/UV-ozone-destruction.html 2. http://www.aquafineuv.com/UVTechnology/Applications/OzoneDestruction.aspx 3. http://www.ozonia.com/media/pdf/app/pure_water-e.pdf 4. http://www.wcponline.com/pdf/0804%20Electrolytic%20Ozone%20Generation.pdf
  13. 13. Thank You 13 Solution Engineer : Mr. Sunil Shah Contact : +91-93212 34527 Mail ID : sunilshah@chemtronicsindia.com URL : www.chemtronicsindia.com www.ozonegeneratorindia.com www.m.chemtronicsindia.com

×