Which of the following in sewage treatme...

Which of the following in sewage treatment removes suspended solids?

A

Tertiary treatment

B

Secondary treatment

C

Primary treatment

D

Sludge treatment

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Knowledge Check

Which of the following in sewage treatement removes suspended solids.

A

Tertiart treatment

B

Secondary treatement

C

Primary treatment

D

Sludge treatment

Secondary sewage treatment

A

Utilizes aerobic bacteria

B

Removes virtually all radioisotopes and toxic metals

C

Is too expensive to be used in most plants

D

Is a mechanical process

Which of the following statement about sewage treatment is false?

A

In primary treatment, large sized particles are filtered through screen and residual water is subjected to sedimentation

B

Coagulation can be carried out by passing ozone through waste water

C

In tertiary treatment, the waste water is treated with lime to remove phosphate following by coagulation

D

Secondary treatment involves aerobic digestion of the organic waste.

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