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Microbiology of Waste Water

Microbiology of Waste Water
Activated sludge contains large number of

yeasts and molds
bacteria
protozoa
all of these

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

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

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

dinoflagellates
bacteroids
coliforms
acid-fast 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?

Ants
Snakes
Worms
Bugs

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

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

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Microbiology of Waste Water
Treatment of municipal water supplies is based upon

chlorination, filtration, coagulation
coagulation, chlorination, filtration
filtration, coagulation, chlorination
coagulation, filtration, chlorination

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