Water use and treatment

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Water use and treatment

• 5 Stages

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Over view
4. Filtration The settled sewage is sprinkled
onto large circular beds, two metres deep, filled
with stones or clinker.. bacteria and other tiny
creatures feed on the organic material. This
produces a sludge which settles out in special
humus tanks.
2. Grit and Sand Channels .The sewage then flows
along wide, deep channels where grit and sand
sink to the bottom.
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5. Final Settling Tank Small and fine particles
settle out leaving the cleaned water, or
effluent, to flow back into rivers and streams.
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1. Screening Metal screens sieve out large
objects such as wood, cans and plastics.
3. Sedimentation Tank Here, solid particles in
the sewage settle at the bottom of the tank to
form a thick sludge.
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Collection
Uses
Treatment
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We all use water
Water in our House
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Collecting Water
Collecting Water
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We all use water
Water in our House