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The tolerance limit of oil and grease of sewage to be disposed on land is ____________

(a) 40ppm

(b) 30ppm

(c) 20ppm

(d) 10ppm

The question was posed to me in my homework.

My enquiry is from Disposal of Sewage topic in division Natural Methods of Wastewater Disposal of Environmental Engineering

1 Answer

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Best answer
Right choice is (b) 30ppm

The explanation: The tolerance limit of oil and grease of sewage to be disposed on land is 30ppm while on sea water is 20ppm.

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