Civil Engineering - Waste Water Engineering - Discussion

2. 

Traps

[A]. are water seals which prevent the entry of foul gases
[B]. are used to trap the rats entering sewers
[C]. dissolve the foul gases
[D]. create syphonic action to increase the quick disposal of sewerage.

Answer: Option A

Explanation:

No answer description available for this question.

Chintu said: (Feb 27, 2017)  
A trap is a device which is used to prevent sewer gases from entering the buildings. The traps are located below or within a plumbing fixture and retains small amount of water. The retaining water creates a water seal which stops foul gases going back to the building from drain pipes.

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