310 likes | 562 Views
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
E N D
Environmental EngineeringLinking Microbiology to Engineering Dr. Abbazadegan Graduate Students: Lauren McBurnett and Otto Schwake
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?
Medium Contaminant Removal • How can you remove the dirt from the water?
Small Contaminant Removal • What about the dirt and oils that did not settle in the gravity settling basin?
Why is turbid water a problem? • Measured in terms of Nephelometric Turbidity Units (NTU)
Small Contaminant Removal • How can you remove turbidity?
Small Contaminant Removal • How can you remove the flocs that formed during coagulation and flocculation?
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?
Small Contaminant Removal • How can you remove the microbes from the water?
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