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Drinking water treatment
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Drinking water treatment

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Transcript

  • 1. Local Drinking Water Treatment
  • 2. Where Does Your Tap Water Come From?
    • Your drinking water is processed by a company called Aquarion.
    • 3. They have several treatment plants. Your tap water is treated in Fairfield, CT and travels down a 36” pipe underground along the Post Road.
    • 4. The water source is a local reservoir called Hemlock Reservoir in Fairfield.
  • 5. Easton Reservoir Water Treatment Plant
  • 6. Water Reservoirs in Our Area This reservoir connects with the next body of water.
  • 7. Water Reservoirs in Our Area Your Water Comes from Here k Raw water is treated here to become safe tap water k
  • 8. How your water is treated:
    • The Gate House controls the amount of water that enters the treatment plant.
    • 9. The Raw Water Pumping Station helps water up hill. The pumps are not used when gravity can do the work.
    • 10. At the Settling Tank a chemical, Alum is added to make impurities clump together. This is called COAGULATION.
  • 11.  
  • 12. Coagulation and Flocculation
  • 13. Sedimentation Basin
  • 14.
    • After the impurities settle, clarified water overflows the Sedimentation Tank leaving the clumps of impurities behind.
    • 15. Next the water is Filtered by letting gravity pull the water through ground up coal and sand.
    • 16. In a new tank Chlorine is added to kill all organisms.
  • 17. Final Additives Before Going to the Storage Tank
    • Adjust PH from 6 to 7 to protect pipes from corrosion.
    • 18. Phosphates are added to prevent dissolving lead & copper pipes.
    • 19. Fluoride is added for dental health.
    • 20. The Storage Tank is filled at night to be ready for peak demand in the morning when you get up to flush, shower, cook, drink, brush teeth and wash dishes.
  • 21. Water Tests Performed Daily:
    • Turbidity – how clear the water is
    • 22. Ph – Kept neutral ph 7
    • 23. Chlorine Levels checked at furthest location because it escapes into the air. Enough is added so the organisms do not grow along the pipeline.
    • 24. Many other tests are also performed, 115,000 tests per year automatically or manually.
  • 25. More Water Facts:
    • The storage tanks are not allowed to be less than half full to provide water for the Fire Fighter.
    • 26. 50 million gallons are processed each day in Fairfield alone.
    • 27. Water use is metered at your homes and read by a truck when it passes by your house.
  • 28. WATER METERS
  • 29. Some Homes Use Well Water
    • Larger properties can drill their own well.
    • 30. Properties far from a water treatment plant must have a well.
    • 31. Well water is pumped from the raw water that collects underground.
    • 32. A home with well water will have a pressure tank.
    • 33. Families may purchase water treatment equipment to filter, soften or neutralize.
  • 34.  
  • 35. Water Pressure Tank for homes with a well
  • 36. Home Water Treatment Filters remove impurities Water Softeners Remove Dissolved Minerals that Harm Pipes Multi Purpose Water Treatment Systems Filter, Soften and Neutralize Water
  • 37. HOMEWORK
    • TONIGHT FIND OUT WHERE YOUR WATER COMES FROM
    • 38. LOOK FOR:
      • WATER METER
      • 39. WATER PRESSURE TANK
      • 40. HOME WATER TREATMENT EQUIPMENT
  • 41. REVIEW WATER TREATMENT AT THIS LINK:
    • Links to the the water treatment cycle: http://www.epa.gov/safewater/kids/watertreatmentplant/storage.html
    • 42. Stop at each treatment point to show where the water is along the treatment path. You may click on each treatment point on the image for a little information about that treatment point.
  • 43. Image Source
    • http://www.thewatertreatments.com/tag/water

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