Filter 2 environmental microbiology.pptx

environmental microbiology

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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

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13. FRICTION LOSS ACROSS A BED OF UNIFORM SIZED PARTICLES

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

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

16. Fluidized bed depth

17. Brain eating organism Naegleria fowleri