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Microbiology of Waste Water

Microbiology of Waste Water
Oxidation ponds are shallow ponds, generally designed at the depth of

4 to 6 feet
2 to 40 feet
1 to 3 feet
5 to 8 feet

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

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

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Microbiology of Waste Water
Which is not a form of biomass energy?

Composting to produce methane
Photovoltaic production of hydrogen
Incineration of solid waste
Ethanol and methanol production for auto fuel

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

the overpopulation of algae
the depletion of oxygen
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 organic material
bacterial count
amount of inorganic material
All of these

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Microbiology of Waste Water
The filtering medium of trickling filters is coated with microbial flora, known as

zooglocal film
geological film
none of these
zoological film

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