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Water Filtration. Water Treatment. Water treatment transforms raw surface and groundwater into safe drinking water. Water treatment involves two major processes: physical removal of solids and chemical disinfection. COAGULATION:. WATER TOWARDS SEDIMENTATION.

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Presentation Transcript
slide2
Water Treatment

Water treatment transforms raw surface and groundwater into safe drinking water.

Water treatment involves two major processes: physical removal of solids and chemical disinfection.

  • COAGULATION:

WATER

TOWARDS

SEDIMENTATION

Coagulation removes dirt and other particles suspended in water.

alum and other chemicals are added to water to form tiny sticky

particles called “floc” which attract the dirt particles. The combinedweight of the dirt and the alums (floc) becomes heavy enough to sink to the bottom during sedimentation.

slide3
Water Treatment

WATER

FROM

COAGULATION

  • SEDIMENTATION:

Coagulated particles fall, by gravity, through water in

a settling tank and accumulate at the bottom of the

tank, clearing the water of much of the solid debris

and clear water moves to filtration.

WATER

TOWARDS

FILTRATION

slide4
Water Treatment
  • FILTRATION, DISINFECTION & STORAGE:

STORAGE: Water is placed in a closed tank or reservoir for disinfection to take pace. The water then flows through pipes to home and business in the community

DISINFECTION: A small amount of chlorine is added or some other disinfection method is used to kill microorganisms that may be in the water.

WATER

FROM

SEDIMENTATION

FILTRATION: The water passes through filters, some made of layers of sand, and charcoal that help remove smaller particles.

slide5
Water Disinfection
  • Purpose of disinfection:
    • To make Drinking water free of any disease causing bacteria and microbes.
  • Methods of disinfection:
    • There are 3 mainly used disinfection methods at large scale.
      • CHLORINATION
      • OZONATION
      • ULTRAVIOLET RADIATION
slide6
COMPLETE CYCLE
  • OF WATER TREATMENT:

COAGULATION

STORAGE

SEDIMENTATION

DISINFECTION

FILTRATION

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