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Microbiology of Waste Water

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

bacteroids
dinoflagellates
acid-fast bacteria
coliforms

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Microbiology of Waste Water
The acetate-utilizing methanogens are responsible for

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

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Microbiology of Waste Water
Activated sludge contains large number of

protozoa
yeasts and molds
bacteria
all of these

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Microbiology of Waste Water
Which of the following is generally not referred to the sewerage system?

Storm sewers
Sanitary sewers
Combined sewers
Solid sewers

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Microbiology of Waste Water
Biogas production is

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

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

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

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