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Microbiology of Waste Water

Microbiology of Waste Water
Which of the following is generally not referred to the sewerage system?

Combined sewers
Sanitary sewers
Solid sewers
Storm sewers

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

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

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Microbiology of Waste Water
Some cyanobacteria produce potent neurotoxins that, if ingested, will kill humans. These cyanobacteria are most likely to contaminate

None of these
water that are anoxic
water rich in phosphate wastes but poor in organic carbon
water rich in organic carbon wastes but poor in phosphate

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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
A dense bacterial population caught in a tangled web of fibers sticking to a surface describes

a biofilm
the membrane filter technique
coagulation
a biodisc

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