An industrial wastewater is discharged into a river about 0.5 km downstream from
ID: 1919896 • Letter: A
Question
An industrial wastewater is discharged into a river about 0.5 km downstream from an outfall
(discharge) coming from a desalination plant. Upstream of the desalination plant's outfall the river has
a flow of 17.8 m3/sec and a total dissolved solids (TDS) concentration of 260 ppm. The water coming
from the desalination plant's outfall flows into the river at a rate of 1800 L/sec and has a TDS
concentration of 4,450 ppm. The industrial wastewater discharge has a flow of 5.0 m3/sec and a TDS
concentration of 860 ppm
a) Calculate the flow in the river just downstream of the desalination plant's outfall (m3/sec).
b) Calculate the flow in the river just downstream of the industrial wastewater discharge (m3/sec).
c) Calculate the TDS in the river just downstream of the desalination plant's discharge (ppm).
d) Calculate the TDS in the river just downstream of the industrial wastewater discharge (ppm).
Explanation / Answer
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