The treated domestic sewage of a town is to be discharged in a natural stream with following data given: (i) Population = 50,000 (ii) BOD contribution per capita = 0.07 kg/day (iii) BOD of stream on u/s side = 3 mg/It. (iv) Permissible maximum BOD of stream on d/s side = 5 mg/It. (v) Dry weather flow of sewage = 140 litres per capita per day (vi) Minimum flow of stream 0.13 m/sec Choose the correct statement(s): A BOD of treated sewage should be 8.21 gm/lt. B Total BOD produced per day is 35000 kg/day BOD of untreated sewage is 500 mg/It. Correct Option Percentage treatment required is 98.358% Correct Option
The treated domestic sewage of a town is to be discharged in a natural stream with following data given: (i) Population = 50,000 (ii) BOD contribution per capita = 0.07 kg/day (iii) BOD of stream on u/s side = 3 mg/It. (iv) Permissible maximum BOD of stream on d/s side = 5 mg/It. (v) Dry weather flow of sewage = 140 litres per capita per day (vi) Minimum flow of stream 0.13 m/sec Choose the correct statement(s): A BOD of treated sewage should be 8.21 gm/lt. B Total BOD produced per day is 35000 kg/day BOD of untreated sewage is 500 mg/It. Correct Option Percentage treatment required is 98.358% Correct Option
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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