water treatment: filtration – cont’d
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WATER TREATMENT: FILTRATION – cont’d. CE326 Principles of Environmental Engineering Iowa State University Department of Civil, Construction and Environmental Engineering Tim Ellis, Ph.D., P.E., Associate Professor March 9, 2009. Announcements. - PowerPoint PPT PresentationTRANSCRIPT
WATER TREATMENT: FILTRATION – cont’d
CE326 Principles of Environmental EngineeringIowa State University
Department of Civil, Construction and Environmental Engineering
Tim Ellis, Ph.D., P.E., Associate ProfessorMarch 9, 2009
Announcements Wednesday field trip to Ames Water Plant
http://www.ameshistoricalsociety.org/exhibits/civic/waterworks1.htm
Meet at the plant at half past the hour of scheduled lab time (10:30 and 2:30) Bring photo id’s No cameras, cell phones or backpacks allowed
2nd exam scheduled for Friday, March 27th - we’ll have a review during the lab class on Wednesday, March 25th
Public Health Effects of Filtration
Number of waterborne disease outbreaks in U.S.
Bachwash Efficiency
5
• 5 nozzles/ft2 or 55 nozzles/m2 - acceptable
• < 4 nozzles/ft2 or 40 nozzles/m2 – large dead zones
• 24 nozzles/ft2 or 268 nozzles/m2 - good
Automatic Backwash Filter
Automatic Backwash Filter
Backwashing Calculations
Backwashing Calculations
Backwashing Calculations
Backwashing Calculations
first elevated steel water tank west of the Mississippi River
erected in 1897 under the supervision and design of Anson Marston
constructed due to a severe water shortage in 1895 that required cancellation of classes
tank holds 162,000 US gallons
1978, the water tower was disconnected when the university switched to municipal water
Water Towers, 1951-1970, Water District No. 54Located on the north side of the Des Moines Field House, near the current skateboard park
http://www.ameshistoricalsociety.org/exhibits/civic/waterworks1.htm
Stanton, Iowa- 96 feet tall.- holds 2,400,000 cups of coffee (150,000 gals.) - completed in time for Homecoming 2000.
Hollywood screen and TV personality Virginia Christine, "Mrs. Olson" of coffee commercial fame, was one of Stanton's famous daughters. At the time of our centennial in 1970, Virginia came home to be our parade marshal. During the celebration she served coffee to the public. Stanton's water tower was converted to a giant Swedish coffeepot the following year.
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