Assignment 3 Fall 2013_SOLN_revised

A sample of the effluent is found to have a bcod

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: sample of the effluent is found to have a bCOD concentration of 15 mg/L. Your client is concerned that in the winter, when the temperature of the lagoon decreases to 10oC, the effluent bCOD concentration will exceed the permit limit of 20 mg/L. If you assume the following biokinetic parameters are applicable (at 20oC), what would you advise your client about the likelihood of the permit being exceeded. k = 5 d-1 ; Y = 0.5 mg VSS/mg bCOD ; Ks = 50 mg bCOD/L ; kd = 0.05 d-1; Φ = 1.06 Solution: Correct for 17C and 10C K2 = K20C Φ T2 - 20c K17C = K20C Φ 17C - 20C= 5/d (1.06)17C - 20C= 4.2/d K10C = K20C Φ 10C - 20C= 5/d (1.06)10C - 20C= 2.8/d Kd17C = Kd20C Φ 17C - 20C= 0.05/d (1.06)17C - 20C= 0.04/d Kd10C = Kd20C Φ 10C...
View Full Document

This document was uploaded on 02/10/2014.

Ask a homework question - tutors are online