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 = 51(v) Dry weather flow of sewage = 140 litres per capita per day5 mg/lt.(vi) Minimum flow of stream = 0.13 m3/secChoose the correct statement(s):BOD of treated sewage should be 8.21 gm/lt.Total BOD produced per day is 35000 kg/dayC BOD of untreated sewage is 500 mg/It.Correct OptionD 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

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

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

Question

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 = 51
(v) Dry weather flow of sewage = 140 litres per capita per day
5 mg/lt.
(vi) Minimum flow of stream = 0.13 m3/sec
Choose the correct statement(s):
BOD of treated sewage should be 8.21 gm/lt.
Total BOD produced per day is 35000 kg/day
C BOD of untreated sewage is 500 mg/It.
Correct Option
D Percentage treatment required is 98.358%
Correct Option

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