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Microbiology of Waste Water

Microbiology of Waste Water
Activated sludge contains large number of

all of these
protozoa
bacteria
yeasts and molds

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

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

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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

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

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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?

Snakes
Bugs
Worms
Ants

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Microbiology of Waste Water
What is an anaerobic digester?

All of these
New diet drink
Method to convert agricultural waste into a biogas
Microbe that eats hazardous waste

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

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

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