WATER TREATMENT

1. WATER TREATMENT Water Unit: ENVIRONMENTAL SCIENCE 302 LOCH

2. Remember this… How does water get clean if it isn’t naturally filtered?

3. Arrange the following pictures

4. Do you drink your wastewater? How sure are you? CREATE A KWL CHART

5. SlideShow… Each student reads the next slide

6. WHAT HAPPENS WHEN YOU FLUSH? Go to the website on the wikipage This will teach you basic information about the wastewater treatment plant The SOURCES of wastewater The STEPS in treatment (primary, secondary, advanced) The FATE of the end products http://www.wef.org/flash/gowiththeflow_english/theflow.htm

7. GOALS Today: Create a graphic organizer to follow along and organize your info Longterm: you have until class next Wednesday to show me – everyone in the class that is – that you understand this information. How are you going to do that?

9. Great! Now what? • Now that you have the gist, show me that you know this very well. Which means: • You can clearly represent the steps to me • In a different context • It will be creative and help your classmates (or other classes) learn • It will answer one of our original questions

10. NOTES ON WASTEWATER

11. What you want to know! ~ pd 4 Where does the poop go? Do we drink our own wastewater? How is drinking water filtered? Do dead fish get to the ocean if you flush them? Where does the stuff go that is filtered out? Is the water cycle on any other planets? How much water does Philly use on a daily basis? How can you tell if your water is clean? What happens if you drink your own poop water? Is toilet water drinkable? Do we use our waste for anything productive?

12. What you want to know! ~ pd 5 Why does water fountain water taste different? How do we know if water is contaminated? How long does the process take? Is natural filtration as good as a treatment plant? What factors affect the process? Is toilet water clean enough to drink? How do companies shut off your water? Why is tap water in other countries unsafe to drink? What happens to toilet paper? What happens to random objects (fish) that get flushed?

13. What you want to know! ~ pd 6 How do they get out things that have dissolved in the water (polar)? Is toilet water actually dirty? How long is the process from toilet to tap? Why does sewage smell? Why is water from the faucet sometimes white? Is finding Nemo accurate? What happens to stuff that you put down the toilet? What happens to poison, drugs? Why do some people think you can’t drink the sink water?

14. Sources of “WasteWater” • Toilet • Sink • Washing Machine • Dishwasher • Your house, a laboratory, an industrial factory, etc…

15. Greywater vs. Blackwater

16. PRIMARY TREATMENT PROCESS • PHYSICAL • Filtering large particles  goes to landfill • Settle large particles  on to secondary • removes ~60% of suspended solids from wastewater.

17. SECONDARY TREATMENT PROCESS • BIOLOGICAL • Bacterial growth promoted, then killed • Aeration encourages bacterial growth • puts O2 back into water • Bacteria decompose waste – yum! • Bacteria are killed via chlorine (usually) • Removes >90 percent of suspended solids.

18. ADVANCED (tertiary) TREATMENT • CHEMICAL & PHYSICAL • “optional” (not done conventionally) • Reduce pollutants of “special concern” • Nutrients like Nitrates and Phosphates…why? • Uses coagulating chemicals & a 2nd filter

19. What’s Left? Where’s it Go? WATER • Into a lake or river  ocean • Crops/Golf course • Possible problems? SLUDGE • Lagoon • Incinerator • Crop fertilizer • Possible problems?

20. YES OR NO….CAN IT GO? Beauty Products Medicine Engine Oil Paint Lawn Care Products Photographic Chemicals Used Cooking Oil Fat from cooking Bacon Diapers Condoms

21. Special Topics

22. Combined Sewer Overflow • Wastewater tx plants will always be in the basin of a watershed…why?

23. Lagoons & Artificial Wetlands • http://www.youtube.com/watch?v=Q7bVx8FBx5s&feature=related • Start at 20sec

24. Recycles wastewater to drinking water Video clip Toilet to Tap

25. Wastewater vs. Drinking water treatment

26. WastewaterTreatment Recap

27. Recycles wastewater to drinking water Video clip Toilet to Tap

28. 2. 1. 3. 4. 6. 5.

29. Boiling Using Sun’s Rays to disinfect Lifestraw Purification plants Toilet to Tap How’s this linked to… Life expectancies? Natural Disasters? Hiking? Purification depends on $$$

30. Bottled Water vs. Tap Water What do you normally drink? Why? What do you know about bottled water?

31. Create a Venn Diagram… • Show the differences and similarities between drinking water and wastewater treatment.

32. What you want to know! ~ pd 4 Where does the poop go? Do we drink our own wastewater? How is drinking water filtered? Do dead fish get to the ocean if you flush them? Where does the stuff go that is filtered out? Is the water cycle on any other planets? How much water does Philly use on a daily basis? How can you tell if your water is clean? What happens if you drink your own poop water? Is toilet water drinkable? Do we use our waste for anything productive?

33. What you want to know! ~ pd 5 Why does water fountain water taste different? How do we know if water is contaminated? How long does the process take? Is natural filtration as good as a treatment plant? What factors affect the process? Is toilet water clean enough to drink? How do companies shut off your water? Why is tap water in other countries unsafe to drink? What happens to toilet paper? What happens to random objects (fish) that get flushed?

34. What you want to know! ~ pd 6 How do they get out things that have dissolved in the water (polar)? Is toilet water actually dirty? How long is the process from toilet to tap? Why does sewage smell? Why is water from the faucet sometimes white? Is finding Nemo accurate? What happens to stuff that you put down the toilet? What happens to poison, drugs? Why do some people think you can’t drink the sink water?

35. Exit assignment… • Fill in more items in the “L” column of your KWL

36. Extra Slides

37. A recap – waste water treatment Wastewater from city Grit Filters (to remove large matter) Sedimentation tank Trickling filter To stream Secondary filters Tertiary treatment Aeration

38. A recap – drinking water treatment Primary Filters (to remove large matter) Water from rivers / lakes Flocculation tank Sedimentation tank To tanks in the city Rapid / slow sand filtration Chlorination

39. WASTEWATER TX • What does it include? • Brainstorm a list of 5 contents • Where does it come from? • Brainstorm a list of 5 contents • Why should humans care?

40. Law: conservation of matter • Why are we concerned about water usage if the law of conservation of matter is true?

41. Arrange the following pictures

42. Why clean our water?Negative Effects… • Disease-causingpathogenscan destroy food chains • Organisms die….leading to low oxygen levels via decomposers • May be due to increased algal growth or more directly via toxic kills • Chlorine compounds and inorganic chloramines can be toxic to aquatic invertebrates, algae and fish; • Bioaccumulation • Metals, such as mercury, lead, cadmium, chromium and arsenic can build up a food chain • Pharmaceutical and personal care products may cause unknown effects…

43. http://ga.water.usgs.gov/edu/wwvisit.html • Stages of treatment, purpose of a treatment plant

48. Arrange the following pictures