engineering recuitment GATE CE 2023-24 Test Series Environmental Engineering Disposing of Sewage Effluents
A treatment plant disposes 50 MLD of treated effluent into a river. The river flow rate is 20 m3/s and its DO is 8 mg/L before the mixing point. If the BOD of the effluent is 50 mg/L, find the BOD and DO of the river water at the d/s of the mixing point. Assume BOD of river water as 0 and DO in WW effluent as 0.
Which of the following is/are correct.
1
BOD at downstream of mixing point is 1.406 g/lit
2
DO of river water at the downstream of mixing point is 7.775 mg/lit
3
BOD at downstream of mixing point is 1.406 mg/lit
4
DO of river water at the downstream of mixing point is 7.775 g/lit