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Environmental Engineering Linking Microbiology to Engineering

Environmental Engineering Linking Microbiology to Engineering. Dr. Abbazadegan Graduate Students : Lauren McBurnett and Otto Schwake. You are on the beach. Tempe Town Lake. What water would you drink?. ?. Environmental Engineers. Pretend you are environmental engineering experts

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Environmental Engineering Linking Microbiology to Engineering

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  1. Environmental EngineeringLinking Microbiology to Engineering Dr. Abbazadegan Graduate Students: Lauren McBurnett and Otto Schwake

  2. You are on the beach

  3. Tempe Town Lake

  4. What water would you drink? ?

  5. Environmental Engineers • Pretend you are environmental engineering experts • Your job is to design a treatment process that will allow you to drink the water at Tempe Town Lake

  6. What needs removed from the water? • Large contaminants • Medium contaminants • Small contaminants

  7. Large Contaminant Removal • How can you remove the large contaminants?

  8. Prescreening Treatment

  9. Medium Contaminant Removal • How can you remove the dirt from the water?

  10. Gravity Settling Treatment

  11. Small Contaminant Removal • What about the dirt and oils that did not settle in the gravity settling basin?

  12. What is turbidity?

  13. Why is turbid water a problem? • Measured in terms of Nephelometric Turbidity Units (NTU)

  14. Small Contaminant Removal • How can you remove turbidity?

  15. Coagulation and Flocculation Treatment

  16. Small Contaminant Removal • How can you remove the flocs that formed during coagulation and flocculation?

  17. Secondary Settling Treatment

  18. Small Contaminant Removal • How can you remove the particles that did not join flocs or those that did join flocs but were not heavy enough to sink? • What about removing odor?

  19. Filtration Treatment

  20. Filtration Mechanisms

  21. Filtration Soils

  22. Activated Carbon

  23. Small Contaminant Removal • How can you remove the microbes from the water?

  24. Chlorination Disinfection Treatment

  25. Drinking Water Treatment

  26. Environmental Engineers • Your next job is to design a treatment system to filter Tempe Town Lake and other unknown dirty water samples

  27. Filtration Design Questions • What is filtration? • What types of filtration are there? • What is filtered out during filtration? • What factors are used to define what is filterable?

  28. Filtration Engineering and Design Before Coming to ASU Incomplete Materials List Coarse Aggregate Fine Soil Container • Design a filter • In groups of 3 or 4

  29. Filtration Engineering and Design While at ASU Scoring Categories Highest Microbial Removal Most Effective Odor Removal Most Effective Color Removal Lowest Cost Overall Winner Highest score in microbiological, odor and color categories versus the cost of the filter • Test your filter’s ability remove • Odor • Turbidity • Microbes • Chemicals • Color

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