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Microbiology of Waste Water

Microbiology of Waste Water
Activated sludge contains large number of

bacteria
all of these
protozoa
yeasts and molds

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Microbiology of Waste Water
Advanced treatment is generally used to treat waste water to

remove additional objectionable substances
remove settleable solids
reduce BOD
remove coarse solids

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Microbiology of Waste Water
What is an anaerobic digester?

Microbe that eats hazardous waste
All of these
New diet drink
Method to convert agricultural waste into a biogas

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Microbiology of Waste Water
The death of a river by environmental pollutants ultimately results from

the depletion of oxygen
the overpopulation of algae
the overabundance of toxic proteins
the buildup of sediment on the river bottom

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Microbiology of Waste Water
The magnitude of BOD of wastewater is related to

amount of inorganic material
amount of organic material
All of these
bacterial count

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Microbiology of Waste Water
The biogas production process takes place at the temperature

lesser than 25°C
45-60°C
25-40°C
all of these

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