Waleed M. Sh. Alabdraba

4 Questions 17 Answers 0 Followers

Questions related from Waleed M. Sh. Alabdraba

How does temperature effect yield and decay coefficients in activated sludge process?

I have date from lab scale extended aeration activated sludge, i try to find a relationship between Y and Kd with the temperature but there are no clear trend.

10 July 2015 5,259 12 View

Does anyone know about the ratio between BOD and COD in wastewater?

in a wastewater analysis i find the BOD/COD ratio in raw wastewater is 0.76 but in treated wastewater the BOD/COD ratio was 0.43 , why it different from that of raw wastewater? and which is better...

25 June 2015 1,361 25 View

Why do I see formation of a white sediment when I add AgSO4/H2SO4 for COD test?

When I try to do COD test when i add the AgSO4/H2SO4 solution a white colour sediment paper immediately, who can tell me why this happened? is it a problem with the H2SO4 or AgSO4?

11 June 2015 5,734 23 View

Which is a better way to measure the impact of sewage on gypsum soil, immersion or infiltration?

See above.

18 May 2014 7,631 3 View