Q3. Untreated wastewater (W) is discharged into a river (R), che rise wastewater and the river upstream and downstream t

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Q3 Untreated Wastewater W Is Discharged Into A River R Che Rise Wastewater And The River Upstream And Downstream T 1 (23.24 KiB) Viewed 37 times

Q3. Untreated wastewater (W) is discharged into a river (R), che rise wastewater and the river upstream and downstream the waste addition are shown Figure 1 below. All K-constants are given at 20°c. Calculate the critical distancini distance from the point of the waste mix with the river water up to the point of the lowest DO) W T = 27.5°C Q-0.2 m/s DO = 2.0 mg/L BOD, 500 mg/L k=0.2 day! T14.50 Q = 5 m/s K -0.975 day R DO = 7 mg/L Ks = 0.325 day! BOD>= 5 mg/L k0.2 day! Figure 1: Characteristics of the river and the waste stream 0.5