Test: Diffused Air System


5 Questions MCQ Test Environmental Engineering | Test: Diffused Air System


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Attempt Test: Diffused Air System | 5 questions in 25 minutes | Mock test for Chemical Engineering preparation | Free important questions MCQ to study Environmental Engineering for Chemical Engineering Exam | Download free PDF with solutions
QUESTION: 1

Which of the following is called as air diffusion method?

Solution:

Explanation: Diffused air aeration method is also called as air diffusion method where diffused air aerators are used for diffusing the air in the aeration tank.

QUESTION: 2

The maximum quantity of air required in diffused aerator is ______ m3 per million litres of sewage.

Solution:

Explanation: The minimum and maximum quantity of air required in diffused aerator is 6000 and 8000 m3 respectively per million litres of sewage.

QUESTION: 3

 The effective area of the diffuser plate used in the aeration tank is 

Solution:

Explanation: Diffuser plates are provided at the bottom of the aeration tank . It is square in shape with the dimension of 30cm x 30cm.

QUESTION: 4

 The maximum depth of aeration tank used in activated sludge process is

Solution:

Explanation: The depth of aeration tank lies between 3 to 4.5m and is 4-6m wide.

QUESTION: 5

Which device is used in the aeration tank for cleaning purposes?

Solution:

Explanation: Tube diffuser is suspended in the aeration tank and can be used for cleaning without emptying the tank.

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