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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
Biogas production is

a temperature-dependent process
a temperature independent process
None of these
an oxygen dependent process

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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 acetate-utilizing methanogens are responsible for

70% of methane produced in a biogas reactor
85% of methane produced in a biogas reactor
50% of methane produced in a biogas reactor
20% of methane produced in a biogas reactor

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Microbiology of Waste Water
What is an anaerobic digester?

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

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Microbiology of Waste Water
Water testing relies on the detection of certain indicator organisms known as

bacteroids
coliforms
dinoflagellates
acid-fast bacteria

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