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Ensuring Water Safety: Filtration and Treatment Methods

Explore water filtration concepts, rock permeability, aquifers, and water treatment processes to determine the safety and drinkability of water supplies. Learn about sedimentation, coagulation, disinfection, and potable water standards.

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Ensuring Water Safety: Filtration and Treatment Methods

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  1. EQ: How can we determine the safety and drinkability of our water supplies? • LT: I can describe the processes that can be used to convert unusable water to usable resources. • LT: I will make observations about rock type vs. permeability • I will draw and label the steps for water filtration • I will work with my group to review water filtration concepts. • Warm Up • Intro to Water Filtration • Build Water Filter

  2. Welcome! Warm Up 3/20/14 • 1. Why would clay be found at the bottom of a well? • 2. Why are we running out of groundwater? http://goo.gl/cE3HIG

  3. LATE WORK in GOGGLE DRIVE • QR CODES AROUND the Room • Do NOT CHANGE THE NAME OF THE ASSIGNMENT TO YOUR NAME • MAKE SURE PDF AND YOUR NAME IS IN THE DOCUMENT

  4. B. Sandstone C.Limestone A. Shale Which rock type is least permeable?

  5. B. Sandstone C.Limestone A. Shale Which rock type would I found in an Aquifer?

  6. Well Simulation http://www.classzone.com/books/earth_science/terc/content/investigations/es1401/es1401page02.cfm?chapter_no=investigation • Step 2: A well Simulation for the different types of rocks

  7. How long can an aquifer last?http://www.classzone.com/books/ml_science_share/vis_sim/ewm05_pg39_aquifer/ewm05_pg39_aquifer.html

  8. Demo: What happens when an aquifer runs dry? • Show a moist sponge vs. a completely dry sponge

  9. Finish up • Finish the conclusion questions for the lab • Submit on Google Drive QRCODE • How did you observe permeability in today’s activity? • Use Impermeable in a sentence

  10. Review • Google "Troubling signs in Paradise"    • http://video.msnbc.msn.com/nightly-news/50152559#50152559 • Explain how the tsunami in Japan has affected other ecosystems. • http://www.NBCnews.com

  11. Water Treatment Video

  12. Water Filtration Vocabulary 24 • Runoff – is precipitation that flows over land into streams and rivers. This water later enters oceans. • Filtration – process of passing water through a series of screens that allow water through but not large particles • Aeration – The water is mixed toreleasedissolved gases and to suspended particles in water column. • Coagulation – The process by which particles in a liquid clump together • Sedimentation– The water left undisturbed to allow the heavy clumps of particles and coagulants to settle out • Disinfection – The water is treated to destroy any remaining disease causing pathogens • Potable Water – water safe enough to drink by humans

  13. Water Filtration 24 Sketch picture from pg 106-107

  14. EPA Tour of Water Plant • EPA tour • http://www.epa.gov/ogwdw/watertreatmentplant/flash/index.html • **Skip Intro • ** (Right) Click on Video and select Zoom In • Press K to go to the Keyboard Short Cuts

  15. BANK • You will work in your lab groups to answer questions. • When I call time, flash me your Ipad with only the Letter of the answer choice • Some questions you will be silent (No Help from your group!) • Some I will let you come to a consensus

  16. Go to • http://www.epa.gov/ogwdw000/kids/flash/flash_qagame.html

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