Question

which one among the following is used for disinfection of treated wastewater
1)soap
2)ozone
3)oil
4)air

which one among the following is used for decompose sludge?
1)Anaerobic bacteria
2)Aerobic bacteria
3)Ozone
4)Chlorine

(pls answer correctly) ​

Answer 1

Answer:

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Answer 2

Answer:

1,answer is ozone

Explanation:

The three chemicals most commonly used as primary disinfectants are chlorine, chlorine dioxide and ozone. Monochloramine, usually referred to as chloramine, is used as a residual disinfectant for distribution.