environmental microbiology

1. 1

2. 2

3. 3

4. 4

5. 5

6. TYPES OF FILTER
ON THE BASIS OF FLOW ON THE BASIS OF FILTER MEDIA
PRESURE FILTER GRAVITY FILTER
Single-media Filter
Dual-media Filter
Multi-media Filter
Slow sand filter
Rapid sand filter

7. Single-media Filter
These have one type of media, usually sand or crushed anthracite coal.

8. Dual-media filter
These have two types of media, usually crushed anthracite coal and
sand.

9. Mixed-media filter
These have three or more than three types of media, usually crushed
anthracite coal, sand, and garnet

10. SLOW SAND FILTER

11. RAPID SAND FILTER

13. S

14. FRICTION LOSS ACROSS A BED OF UNIFORM SIZED PARTICLES

15. The shape factor φ ranges from 0.75 to 0.85 for most of the filter
materials.

16. Friction loss through bed of non-uniform, stratified particles

22. Fluidized bed depth

32. Brain eating organism
Naegleria fowleri