1. TREATMENT OF WASTEWATER USING PHOTOCATALYSIS Sikder M Selimuzzaman

2. Outline Introduction Methodology Discussion Conclusion

3. Introduction Effuent of industry is a mixture suspended, dissolved organic and inorganic pollutantspollutants The level of treatment Preleminery Treatment (rags, sticks etc.) Primary Treatment (ss,om, etc.) Secondary Treatment (bio-organic Matter, ss) Tertiary Treatment (rss, Nut rient, etc) Advance Treatment (DM, SS)

4. Effuent of industry

5. Some AOPs

6. How OH o mineralize the pollutant ?

7. How photocatalytic degradation (PCD) occur?

8. Photocatalytic degradation (PCD)

9. Lay out of the photoreactor

10. Photoreactor during the experimental run

11. Results and discussion (Photocatalytic degradation of S 2 O 3 : Effect of UV light and TiO 2 )

12. Figure: Photocatalytic degradation of S 2 O 3 and corresponding formation of SO 4

13. Conclusions and recomendations No S 2 O 3 can be removed either UV or TiO 2 or both. Solar light in place of UV light lamp can be used to reduce the pollutant

14. Thank you