Module 5 Flashcards
What are the objectives for surface water treatment?
Turbidity, pathogens, taste/odor
What are the treatment steps at the mannheim water treatment facility?
Coagulation, flocculation, sedimentation, ozonation, filtration, disinfection
What is ASR and how does it work
Aquifer storage and recovery system,
Treated water injected into aquifer, Stored until needed and then pumped out
What are examples of light, non-aqueous phase contaminants
- they float
- petroleum products
- Dissolves in groundwater in immiscible stage
What are dense non-aqueous phase contaminents
- sink
- Chlorinated solvents
- dissolves in GW but in immiscible stage
What is E-coli
bacteria inhabits large intestine of animals, commonly from tainted food
How was well 5 contaminated?
Infiltration of contaminated water, overland flow, point sources
What are the steps of the multi-barrier approach?
Source, treatment, distribution system, monitoring, response
Does groundwater or surface water contain more pathogens?
Surface water
Does UV light kill pathogens?
No, it just disrupts dna/rna
