Has anyone designed tray aerators f

[manginela]

Has anyone designed tray aerators for manganese removal. I am after typical residual pressure required at the discharge, arrangement ( free discharge or spray discharge), loading rates and design criteria, suppliers/vendors etc.

 

[ashtree]

Manganese removal by aeration alone requires
1)High dissolved oxygen levels (close to saturation) and
2) pH raised to about 9.5 with not less than 30 mins detention time or
3) very long detention times(days to weeks)

So assuming that you meet those requirements and tray aerators are still the most suitable for your application i would suggest you contact a tray aerator manufacturer as each design has its own characteristics.

Loading is typically in the range of 1-5 USGPM per ft2 of tray area.

Given that you need a reaction tank with at least 30 mins detention time i would think you should be looking at either diffussed air or perhaps some sort of turbine aerator.

Regards
Ashtree
"Any water can be made potable if you filter it through enough money"

 

[bimr]

It is not practical to use a tray aerator to oxidize manganese.

The oxidation of manganese by oxygen occurs very slowly. To increase the speed of the reaction, one would have to elevate the pH to approximately 10 units, which of course makes it impractical to use an aerator to oxidize manganese.