Question

Waste water flowing with TSS concentration 40 mg/L at the rate of 10 Liter/min is discharged into the river if the river is flowing at the rate of 15 Liter/min, what is the concentration of TSS in the river?

(a) 10 mg/L

(b) 30 mg/L

(c) 45 mg/L

(d) 60 mg/L

This question was addressed to me in exam.

I want to ask this question from Multiple Component Systems topic in section Introduction to Material Balances of Basic Chemical Engineering

Answer 1

Right option is (d) 60 mg/L

The best I can explain: Concentration of TSS in river = 40*15/10 = 60 mg/L.