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Microbiology of Waste Water

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

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

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Microbiology of Waste Water
What is an anaerobic digester?

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

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Microbiology of Waste Water
Which of the following is not employed as an oxidation method?

Contact aerators
Trickling filters
Oxidation ponds
All of these

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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
a biodisc
coagulation

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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?

Worms
Snakes
Ants
Bugs

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Microbiology of Waste Water
The magnitude of BOD of wastewater is related to

All of these
bacterial count
amount of inorganic material
amount of organic material

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