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Science Section 3 Figure 33

Authored by Hanh Tran

Science

6th Grade

Science Section 3 Figure 33
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in the primary treatment of wastewater?

Aeration tank

Screens

Secondary clarifier

Disinfectant

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the grit chamber in wastewater treatment?

To add disinfectant

To remove large particles

To aerate the water

To return sludge

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens in the aeration tank during secondary treatment?

Water is disinfected

Air is added to the water

Sludge is removed

Water is screened

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of the secondary clarifier in wastewater treatment?

To add air to the water

To remove activated sludge

To screen the water

To add disinfectant

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is added to the water before it is discharged to surface water?

Sludge

Air

Disinfectant

Grit

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final product of the secondary treatment process?

Raw sewage

Primary effluent

Secondary effluent

Grit disposal

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the return sludge pump?

To add disinfectant

To return sludge to the aeration tank

To remove grit

To screen the water

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