WASTE MANAGEMENT QUIZ 20

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Question 1:

Breakpoint chlorination is defined as the

point where less chlorine has been added to a quantity of water.

point where enough chlorine has been added to a quantity of water to satisfy its disinfecting demand.

point where excess chlorine has been added to a quantity of water to satisfy its disinfecting demand.

point where enough bromine has been added to a quantity of water to satisfy its disinfecting demand.

Landfill liners may be single, composite, or double. Selection of liner based on

Permeability

Chemical compatibility

Stress-strain characteristics

All of the above

Testing of colour should be done within ______ hours of collection.

MLSS concentrations for conventional activated sludge plants range from

2,000 to 10,000 mg/L

2,000 to 8,000 mg/L

2,000 to 4,000 mg/L

1,000 to 4,000 mg/L

Organic Matter found in water is either biodegradable or non biodegradable. Which of the following is the non biodegradable organic matter?

Starch

Proteins

Fats

Tannic acid