It's no ordinary watering can head:
http://journeytoforever.org/biodiesel_processor10.html
Journey to Forever 90-litre processor
Scroll down to "processor lid".
But all you need is the principle, of course, then adapt what you can
find to do the same job in your set-up. As you're doing.
I'm not quite clear on it though. "The water gets pumped up and then
falls like rain all over the surface of the BD" - only the water? Or
are you pumping BD as well, or mixed BD and water? If it's only the
water, all you have is a sort of glorified mist-washer, with rain
rather than mist. Well, maybe that's okay. But I'd've thought a pump
would pull liquid out of the bottom faster than the water raining on
top will percolate down, isn't it pulling BD as well, and mixing the
water and BD? Is the BD getting mixed with water, or just rained on?
regards
Keith
OK, this time I think I just might have gotten it :) I was
re-reading through the 90 liter processor at JtF as I recalled
something about a shower head being used.
Well, it turned out to be a watering can head, but same idea.
I have set up a system where the water is pumped up from the exit
pipe in the Standpipe design
http://www.veggieavenger.com/avengerboard/viewtopic.php?t=333) to
the top of the wash tank and there it is distributed via a "T"
section to fall like rain over the BD. It works, but still not to my
satisfaction. Enter the watering can idea. Instead of the "T"
section with perferated hose actiing as a distributor tomorow I am
on the hunt for a pair of large, flat shower heads that can be used
instead. That should do it once and for all. The water gets pumped
up and then falls like rain all over the surface of the BD washing
it as it sinks to the bottom and gets pumped back up again and again
and again.
And that should about do it for the Ultimate Pump Wash :) Other
methods might work better but with the very limited head space I
have to work with this it is for me. I will post an update (even if
it doesn't work... but it will, ha!)
I figure that with TWO shower heads the entire area should be
suficiently covered so as to do a good job, and that is the only
thing I will be satisfied with, a GOOD job.
Luc
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