Question 1 A reactive chemical disposed of by dilution in a river dissipates at a uniform rate of 0.15 mg/l per hour. The waste discharge is 7 million gallons per day containing 35 mg/l, while the stream has zero concentration with a flow above the sewer outfall of 102 ft/s. If the mean velocity in the river is 0.8 ft/s, calculate the distance downstream that the chemical residual persists.

Question 1 A reactive chemical disposed of by dilution in a river dissipates at a uniform rate of 0.15 mg/l per hour. The waste discharge is 7 million gallons per day containing 35 mg/l, while the stream has zero concentration with a flow above the sewer outfall of 102 ft/s. If the mean velocity in the river is 0.8 ft/s, calculate the distance downstream that the chemical residual persists.

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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Collection Systems

The collection systems form a part of sanitary engineering, which is a sub-branch of civil engineering. It is also known as public health engineering and wastewater engineering. It is a methodology followed to remove and properly dispose of human waste, along with creating systems to provide safe and clean usable water. These measures ensure a hygienic and disease-free community. Sanitary engineering, apart from building sewer disposal units, is also involved in plumbing, fire protection, hydraulics, life safety, environmental protection, information technology, microbiology, pathology, and so on.

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