Introduction The need to remove pathogens from potable water supplies is long recognized. Pathogenic contamination of water cause disease outbreaks and contribute to background disease rates around the world, and most seriously impacting the developing world.

1. Mohammad Ali Jauhar University.
Rampur
A
POWER POINT PRESENTATION
on
Removal of Pathogens fromwaste water
Department Of Civil Engineering
G-1
Batch 2017 -21

2. Introduction
Water covers 75% of earth surface.

3. AIM OF WASTE WATER TREATMENT

4. Waste Water treatment

5. PATHOGENS IN WASTE WATER

6. WASTE WATER TREATMENT PROCESS

7. Preliminary Treatment

8. Primary Stage

9. Secondary Stage

10. Tertiary treatment

11. AERATION PROCESS

12. Methodology
 BIOCHEMICAL OXYGEN DEMAND
 CHEMICAL OXYGEN DEMAND

13. BIOCHEMICAL OXYGEN DEMAND

14. Biological oxygen demand
 Oxidation by microorganisms.
 Modelling treatment plant process& the effect
organic compounds on dissolved oxygen
content.
 5days treatment.
 Toxic materials kills microorganisms.
 Inaccuracies when used with proper seed.
 Lengthy process.

15. CHEMICAL OXYGEN DEMAND

16. CHEMICAL OXYGEN DEMAND
 Oxidation by K2CR2O7. MN2(SO4)3
 Rapid & frequent monitoring &Water quality.
 1-3 hours.
 Correlates with B O D on waste water with
constant Composition.
 Toxic materials do not affect oxidation.
 Short analysis time.

18. LIST OF MICROSCOPIC ORGANISM

19. CONCLUSION

20. Thank you.