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The depth of water while using ultra violet ray treatment for disinfection should be ____

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in Environmental Engineering by (81.4k points)
The depth of water while using ultra violet ray treatment for disinfection should be ____

(a) 35cm

(b) 46cm

(c) 28cm

(d) 10cm

I got this question during an interview.

I want to ask this question from Methods of Disinfection topic in portion Properties of Disinfection of Environmental Engineering

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Best answer
The correct answer is (d) 10cm

To explain: The depth of water while using ultra violet ray treatment for disinfection  should not exceed 10 cm and its turbidity should be in the range of 15-20ppm.

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