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Microbiology of Waste Water

Microbiology of Waste Water
Which of the following is not employed as an oxidation method?

Trickling filters
All of these
Oxidation ponds
Contact aerators

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

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

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

85% of methane produced in a biogas reactor
70% 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
Which is not a form of biomass energy?

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

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

bacteroids
coliforms
acid-fast bacteria
dinoflagellates

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

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

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