Water Purification
Published on Mar 21, 2016
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PRESENTATION OUTLINE
WATER PURIFICATION
- Water purification is the removal of containments from raw
- water to produce drinking water that is pure enough for human
- consumption or for industrial use
OUR OBJECTIVE FOR YOU
- Today we will learn about the process of water purification.
- Where the city gets it's purified water
- What chemicals are used in the process
WATER PURIFICATION (CITY)
- Shore intake
- Raw water tunnel
- Traveling screens
- Low lift pumps
- Chemical application channels
WATER PURIFICATION (CITY)
- Settling Basins
- Filter Bed
- Clearwells
- Finished water reservoirs
- Finished water tunnels
SHORE INTAKE
- Water from lake Michigan enters the intake crib
- At depths of 20 to 30 feet
RAW WATER TUNNEL
- Water enters the purification plant's intake
- Basin through a tunnel beneath the lake bed
TRAVELING SCREENS
- Water is filtered through eight traveling screens to catch debris
LOW LOFT PUMPS
- Water is pumped by low lift pumps to 25 feet for first chemical treatment
CHEMICAL APPLICATION CHANNELS
- Water flows from the chemical application channels
SETTLING BASINS
- Water flows through mixing basins to begin the flocculation process
FILTER BED
- Flocculated water passes into settling basins to sit
- For an hour allowing floc to settle
CLEARWELLS
- Water is filtered through percisely graded sand and gravel
- Preforming a "natural polishing"
FINISHED WATER RESERVOIR
- Filtered water flows into clearwells for its final chemical application
FINISHED WATER TUNNEL
- From the finished water reservoirs, water flows to the distribution system
WHAT CHEMICALS ARE INVOLVED?
- Oxidents
- Antifoams
- Biocides
- Disinfectants
- Coagulants
WHERE DO WE FIND THESE PLANTS?
- You can find them near a body of water newr the City/Town
