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Microbiology of Waste Water

Microbiology of Waste Water
Activated sludge contains large number of

protozoa
yeasts and molds
all of these
bacteria

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Microbiology of Waste Water
The concept of putting microbes to help clean up the environment is called

bioremediation
fermentation
biolistics
pasteurization

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Microbiology of Waste Water
Advanced treatment is generally used to treat waste water to

remove additional objectionable substances
remove coarse solids
reduce BOD
remove settleable solids

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Microbiology of Waste Water
Which of the following is responsible for the corrosion problem?

Iron bacteria
Slime forming bacteria
All of these
Sulfur bacteria

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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
Ants
Worms
Snakes

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

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

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