Which of the following chemicals are used to disinfect water in a wastewater treatment plant?

Ozone

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Chlorine

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Hydrogen

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Phosphate

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Solution

The correct options are
A Ozone
B Chlorine
Disinfection is the final stage in a wastewater treatment plant. Ozone and chlorine are commonly used to disinfect water during wastewater treatment.
These chemicals act as disinfectants and kills the harmful disease causing bacteria and other microbes.

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