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City of Fairborn

City of Fairborn. Water Treatment & Distribution System Overview. System Components Overview. SCADA Control. Two units located at separate sites provide for continuous monitoring and control of the water and sewer systems. Sample SCADA Screen. Trending Capabilities. Mad River Well Field.

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City of Fairborn

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  1. City of Fairborn Water Treatment & Distribution System Overview

  2. System Components Overview

  3. SCADA Control Two units located at separate sites provide for continuous monitoring and control of the water and sewer systems.

  4. Sample SCADA Screen

  5. Trending Capabilities

  6. Mad River Well Field • Primary water source • Seven wells with capacity of over 10 MGD • Water conveyed to treatment plant via a river crossing and 2 miles of raw water line

  7. Raw Water Line Installation of raw water line in 1975

  8. Water Treatment Plant • Capable of treating 5.4 MGD • Designed for Iron and Manganese Removal • State of Ohio Class III plant (second highest level of plant)

  9. Plant Layout Clearwell Clearwell Water Treatment Plant Medium Service Booster Station Abandoned Clearwell

  10. Basic Treatment Process Chlorine for Disinfection Fluoride for Dental Health Prechlorination for Iron & Manganese Reaction KMnO4 for Iron & Manganese Reaction Polymer & Chlorine for Filter Conditioning

  11. Filtration • 8 multi media filters • Provide iron & manganese removal Typical Filter Configuration of gravel, garnet, sand and anthracite

  12. Filter Backwash Control

  13. Filter Backwash • Done based on effluent turbidity • Water is pushed back through filters removing build up of iron and manganese • Used water is sent to the sewage system

  14. Chemical Additions Potassium Permanganate Anionic Polymer Chlorine (Pre and Post) Fluoride

  15. Potassium Permanganate • Used for manganese removal • Strong Oxidizer • Not combustible but could enhance combustion of other materials • Gives off irritating fumes in fire

  16. Chlorination • Use gaseous chlorine for disinfection and treatment • Strong Oxidant • Not combustible but reacts violently w/combustibles • High health hazard

  17. Fluoridation • Add hydrofluosilicic Acid for dental health • Corrosive • Not flammable but reacts with many metals to produce flammable and explosive hydrogen gas

  18. Polymer • Used as a filter aid

  19. Laboratory • Maintain OEPA bacteriological and chemical certifications • Conduct daily testing for chlorine, fluoride, pH, turbidity and other process controls

  20. Raw Water Quality

  21. Finished Water Quality

  22. Clearwells • Two 1.5 million gallon clearwells used to store finished water

  23. Pumping to the Distribution System Due to the geography of the city, three different pressure zones have been defined – low, medium and high. Some parts of the system operate off of gravity. Other parts must have assistance so booster pumps are used. Water pumped and stored in tanks provides pressure head.

  24. Low Service Pumping Station • Located at the Water Treatment Plant • Pumps water to the low service area and Fairfield Park Tank

  25. How Water Towers Work Water Towers are tall to provide pressure. Each foot of a height provides .43 pounds of pressure. So a tank that is 100 foot tall has a pressure of 43.3 pounds at its base. A – From Plant B – Booster Station C – To Primary Mains/ Customers D – Water Tower There is only one pipe through which water both goes in and comes of our water towers. If water is being pumped from the treatment plant and the demand does not require it, it will go into a water tower. However, if there is more demand than the treatment plant can supply then water will be taken from the tower.

  26. Fairfield Park Tank • Services low service area • 0.5 million gallons

  27. Plant Medium Service • Across from the Water Treatment Plant • Services Medium Service & Rona Hills Tank

  28. Rona Hills Tank • 2 million gallons ground storage tank • Services medium service

  29. System Medium Service • Old Fire Station • Services Medium Service • Pumps to Five Points Tanks

  30. Five Points Tanks • Two towers • .75 MG • .25 MG • Services Medium Service • Hosts city antennas

  31. Kauffman Booster Station(High Service) • Located near Wright State University • Services High Service Area • Pumps to Southwest Tank

  32. Southwest Tank • 0.5 million gallons • Actually located in Beavercreek • Services high service

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