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Microbiology of Waste Water

Microbiology of Waste Water
Activated sludge contains large number of

protozoa
bacteria
all of these
yeasts and molds

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

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

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

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

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

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

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Microbiology of Waste Water
Iron bacteria can produce

extreme acidity
undesirable odors and tastes
both (a) and (b)
slime

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Microbiology of Waste Water
Composting is one of the oldest forms of disposal of waste. It is the natural process of decomposition of organic waste that yields manure or compost. One of the following is added to the compost to get better results?

Bugs
Worms
Ants
Snakes

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