1. A water sample is known to contain 300 g/m3 of casein (C8H12O3N2). Estimate the COD, BODu, and BOD5. If k equals 0.21 at 20 ?C, estimate the BOD5 at 25 ?C. Assume the temperature coefficient ? is equal to 1.056.

1. A water sample is known to contain 300 g/m3 of casein (C8H12O3N2). Estimate the COD, BODu, and BOD5. If k equals 0.21 at 20 ?C, estimate the BOD5 at 25 ?C. Assume the temperature coefficient ? is equal to 1.056.

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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Concept explainers

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.

Question

1. A water sample is known to contain 300 g/m3
of casein (C8H12O3N2). Estimate the COD,
BODU, and BOD5. If k equals 0.21 at 20 ?C,
estimate the BOD5 at 25 ?C. Assume the
temperature coefficient ? is equal to 1.056.

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