MICROBIOLOGY OF WASTE WATER QUIZ

Biomass

offers the consumer high quality energy with low environmental impact

consists largely of wood, animal, and human waste

is unlikely to be a major source of energy globally

provides the U.S. with about 50% of its energy

TRUE ANSWER : ?
YOUR ANSWER : ?

The magnitude of BOD of wastewater is related to

amount of organic material

bacterial count

amount of inorganic material

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The filtering medium of trickling filters is coated with microbial flora, known as

zooglocal film

geological film

zoological film

none of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Ants

Worms

TRUE ANSWER : ?
YOUR ANSWER : ?

Biogas production is

an oxygen dependent process

None of these

a temperature independent process

a temperature-dependent process

TRUE ANSWER : ?
YOUR ANSWER : ?

Advanced treatment is generally used to treat waste water to

reduce BOD

remove coarse solids

remove settleable solids

remove additional objectionable substances

TRUE ANSWER : ?
YOUR ANSWER : ?

Activated sludge contains large number of

protozoa

all of these

bacteria

yeasts and molds

TRUE ANSWER : ?
YOUR ANSWER : ?

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

None of these

water that are anoxic

water rich in organic carbon wastes but poor in phosphate

TRUE ANSWER : ?
YOUR ANSWER : ?

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

a biofilm

a biodisc

the membrane filter technique

coagulation

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Trickling filters

Contact aerators

All of these

Oxidation ponds

TRUE ANSWER : ?
YOUR ANSWER : ?

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