WASTE MANAGEMENT QUIZ 23

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Question 1:

Smoke from kitchens, fire places and industries are the type of

Solid waste

Liquid waste

Gaseous waste

Biodegradable waste

Optimum temperature for chlorination is

10 to 40 degree Celsius

32 to 48 degree Celsius

40 to 80 degree Celsius

15 to 70 degree Celsius

Which of the following statement is incorrect about Hydraulic retention time (HRT)?

HRT is the period of time that wastewater remains in a tank.

HRT is also known as Hydraulic detention time

In most aeration treatment systems, 4 to 8 hours of retention time is necessary

In a conventional, completely mixed, or plug flow reactor, the HRT is greater than SRT.

Coagulation process is generally not adopted in modern sludge treatment plants because

1,2,3

2,3,4

1,3,4

1,2,4

Which of the following is the best method for the disposal of polluted waste?

Dumping of waste in the ponds

Dumping of waste in the river

Dumping of waste in the oceans

Burying of waste into the land