Civil Engineering - Waste Water Engineering - Discussion

25. 

Primary treatment of sewage consists of removal of

[A]. large suspended organic solids
[B]. oil and grease
[C]. sand and girt
[D]. floating materials
[E]. none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Nouman Khan said: (May 5, 2018)  
Floating material?

Shaswata said: (Sep 27, 2018)  
E should be the right answer.

Muaz said: (Oct 5, 2018)  
Floating is removed in preliminary, screening and grit.

Srinu Royal said: (Feb 25, 2019)  
Preliminary treatment --- inorganic solids.

Primary treatment---- settlable or suspended organic solids.

Secondary tratment ----- dissolved organic.

Final treatment ----- pathogenic bacteria.

Amu Bokato said: (Mar 12, 2019)  
Thank you @Srinu Royal.

Asif said: (Jun 14, 2019)  
Thank you @Srinu Royal.

Hisham said: (Feb 20, 2020)  
Primary include preliminary also. So all are correct.

Mahesh Sinh said: (Feb 5, 2021)  
Floating material at screen chamber,
Oil and grease at skimming tank,
Grit at grit chamber.
Above all are before primary treatment.

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