[compost_tea] Vortex Brewer.
Hi, I am in the process of building a 240 gallon Vortex brewer.
My first brew went anaerobic almost immediately. Clearly I have undersized=
the air supply and while I would appreciate advise on which pump I should =
purchase (I used an Eco7 that allegedly provides7 cfm, it appears that I ne=
ed to at least double that rate), my question is more about the properties =
of an air lift pumps so I can maximize the amount of DO.
My design is similar to Bobby Grimes. I purchased a cone bottom tank that =
I mounted on a stand so the tank is about 4 feet off the ground (ideal for =
gravity filling the spray rig). The manifold is attached to the base of th=
e stand and there are three 2 inch pipes that return water over the top of =
the tank via air lift from a 17 inch air stones.
My question is at what depth should I put the air stones in the pipes? If =
I put the stones near the bottom of the pipe I thought this would be ideal =
because the air bubbles would be in contact with the water for a longer per=
iod of time as they rose up the pipe thus increasing DO. But of course the=
deeper the air stone the lower the performance of the air pump because the=
resistance pressure is greater. In other words, is there any rule of thum=
b regarding the depth of the air stone?
This question becomes very important as I look at purchasing a new pump as =
regenerative blowers loose performance very quickly the more pressure they =
are working under.
I would really appreciate any help or ideas, thanks in advance.
Received on Mon May 23 2011 - 20:29:50 EDT
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: Tue Feb 07 2012 - 13:58:10 EST