flow makers in oxidation ditch
flow makers in oxidation ditch
(OP)
Hi, its me again! :) I have a question regarding the design of flow makers in oxidation ditch.
I have an oxi ditch, 5,5 m deep, 2300 m3 volume, with disc air diffusers and flow makers, but I am not sure how to pick the right flow maker.
I guess the easiest way is to ask the manufacturer to quote the flowmaker that fits best, but I would like to know how to pick the right one myself.
My senior colleague told me that I should assume the energy of mixing to be 10-30 W/m3 and than get the power of the flowmaker.
When I use the energy of mixing of 20 W/m3 for my oxi ditch, I get the needed power for mixing 46 kW, which is way to big.
I have attached a layout of the oxi ditch, for your reference.
P.S. The same question stands for the design of aerobic and anaerobic selectors.
I would be grateful if you could share your vast knowledge with me once again.
Thank you,
Mirko
I have an oxi ditch, 5,5 m deep, 2300 m3 volume, with disc air diffusers and flow makers, but I am not sure how to pick the right flow maker.
I guess the easiest way is to ask the manufacturer to quote the flowmaker that fits best, but I would like to know how to pick the right one myself.
My senior colleague told me that I should assume the energy of mixing to be 10-30 W/m3 and than get the power of the flowmaker.
When I use the energy of mixing of 20 W/m3 for my oxi ditch, I get the needed power for mixing 46 kW, which is way to big.
I have attached a layout of the oxi ditch, for your reference.
P.S. The same question stands for the design of aerobic and anaerobic selectors.
I would be grateful if you could share your vast knowledge with me once again.
Thank you,
Mirko





RE: flow makers in oxidation ditch
The manufacturers of the ditches have a great deal of empirical data to support their recommendations. You would be better off talking to the manufacturers. I assume that you would want them to guarantee the treatment results.
RE: flow makers in oxidation ditch
I've come across some really great diagrams from one manufacturer of mixers and flowmakers, so basically I have found what I was looking for.
Found out that the data my senior colleague gave me is valid only for small sized tanks.