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RE: [compost_tea] Compressor as an aerator?



Scott,

Yes, some people do use air compressors to aerate their tea.  I have attached a long sting of message on the subject from previous posts. I had the same question a couple of months back.  

Hope this helps.  

Matthew Ryan 
Research Technician 
The Rodale Institute
611 Siegfriedale Road 
Kutztown, PA 19530
(610) 683-1405


Matthew,

I do use an air compressor......a small 1/3 horsepower and I think Bob,
Linda and several others do as well. It doesn't hurt the organisms nearly as
much as I am quite sure the Soil Soup machine, for example, does.......In
fact, I only use an air compressor for my big brews. The little brews...
five gallons, are made with aquarium pumps.....which are like mini
compressors!

Cheers,

Jeff L

Regarding the aircompressor and pressure regulator and taking the 
samples via car / truck to the lab or to customers to apply.  After 
breweing the TEA We use the same air compressor enroute to the 
customers as we use to brew the 250  to 500 gallons.  A 12 volt to 
110 volt coverter drives the air compressor easily with no adjustment 
in the truck electrical system.  The 1/3 hp compressor puts out the 
right amount of air for  both systems.  Because we will be setting up 
the next brew while applying each rew we d use more than one 
compressor.  2 at the plant brewing, one in the truck aerating the 
load.  We use oiless compressors that would qualify for human air 
systems. 
               Bob   ( of Bob's Brewers )

--- In compost_tea@y..., "Ryan, Matthew" <matthew.ryan@r...> wrote:
> Jeff and Brett,
thoughts on this? 
> 
> Also, I was wondering if any of you have ever tried or know of 
someone that
> uses an air compressor (with pressure regulator) to supply oxygen 
to their
> brews?  This would be along the lines of the tire pump that was 
used to
> aerate the brew in the car on the way to the lab (previous 
message).  Can
> anyone think of a reason why not to use an air compressor if you 
can control
the pressure so it does not damage the microorganisms?  

:Jeff
There are alot of different types of air compressors; some need
lubricants and others don't, depending on the materials used in
constuction and the design itself.  I suggest that Bob would be more
able to tell you about yours?  

:Scott
'Self-lubricating' could mean it has a life-time supply of lube, or that
it doesn't need any - probably the lab could tell if there is something
there that shouldn't be there.

We use diaphragm air compressors in all models.  Nno lubrication and 
minimal noise.  the aquarium pumps are usually near silent but put 
out modest amounts of air.  One we use for up to 100 gallons pumps .7 
CFM.  For 250 gallons we increase the air to 1.7 cfm  Granger has a 
good model at near $ 300.  The CFM required depends on voluum and 
method of application and amount of microactivity and nutrients-
all more complex thanI want to try to describe here.  It took over a 
year to sort it out to a reliable set of conditions / results.  Bob

- In compost_tea@y..., "Tom Jaszewski" <tomj@l...> wrote:
> Aquarium pumps are designed for continuous use and are very 
effective incommercial brewers. ( Bob: I agree with Tom & Jeff)  





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