Environmental engineering linking microbiology to engineering
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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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Environmental EngineeringLinking 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

  • Your job is to design a treatment process that will allow you to drink the water at Tempe Town Lake


What needs removed from the water?

  • Large contaminants

  • Medium contaminants

  • Small contaminants


Large Contaminant Removal

  • How can you remove the large contaminants?


Prescreening Treatment


Medium Contaminant Removal

  • How can you remove the dirt from the water?


Gravity Settling Treatment


Small Contaminant Removal

  • What about the dirt and oils that did not settle in the gravity settling basin?


What is turbidity?


Why is turbid water a problem?

  • Measured in terms of Nephelometric Turbidity Units (NTU)


Small Contaminant Removal

  • How can you remove turbidity?


Coagulation and Flocculation Treatment


Small Contaminant Removal

  • How can you remove the flocs that formed during coagulation and flocculation?


Secondary Settling Treatment


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?


Filtration Treatment


Filtration Mechanisms


Filtration Soils


Activated Carbon


Small Contaminant Removal

  • How can you remove the microbes from the water?


Chlorination Disinfection Treatment


Drinking Water Treatment


Environmental Engineers

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


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?


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


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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