Civil Engineering - Water Supply Engineering - Discussion

Discussion Forum : Water Supply Engineering - Section 2 (Q.No. 7)
7.
Disinfection of water with ozone is not good because
it vanishes before water reaches the consumers
it removes the colour, taste and odour from water as bacterias
it adds taste to the water
it is more efficient than chlorine in killing bacterias
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
41 comments Page 5 of 5.

Khan said:   3 weeks ago
Option A is correct.

Ozone is a highly unstable gas that breaks down rapidly into oxygen, often within a few seconds to 30 minutes, depending on the water chemistry.

This means it does not provide a residual disinfectant effect in the water as it travels through the distribution system to consumers. A persistent residual is essential to protect the water supply from potential recontamination in the pipes after leaving the treatment plant.


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