Self cleaning centrifuges are common in the industrial area. Some have a=20
cleaning cycle, and other work in a continuous feed mode, with=20
continuous drain of the heavier material. They are common in water/waste=20
water treatment plants, chemical plants, etc. They may be used to=20
concentrate the waste stream or in the product process. Might try to=20
contact the process engineer or manufacturer and pick their brain.

On 1/15/2011 7:17 PM, IVP wrote:
> Hi all,
>
> I have a large outdoor fish pond (and a typo I just did, a fish
> pong, which it does if you stir it up) that gets a lot of sun, so
> made an algae killer with a 10W UV-C germicidal lamp
>
> http://dl.dropbox.com/u/18683201/UV-C_algae_killer.jpg
>
> (very reminiscent at night of Mr Burns in The Springfield Files.
> Maybe I should call it Burnsy)
>
> As you can see, it will turn pea soup into clear water by
> giving algae the Sunburn From Hell, which causes it to clump
> in fluffy bits about 1mm big. That is the brown muck which
> accumulates and needs flushing out. It's pretty 'sticky' too
> and gradually coats anything it comes in contact with
>
> During the day the pond is murky because of this dead algae
> generally scattering sunlight, but a night flash shows that the
> water itself is pretty clear. Water is about 80cm deep
>
> http://dl.dropbox.com/u/18683201/day_night.jpg
>
> So I was looking around and found this site
>
> http://www.simplecentrifuge.com/gallery-series-17.html
>
> A high-speed centrifuge seems to a fairly good job of
> removing the very light live algae, so it should be at least as
> good with these bigger particles
>
> The question is though that some manual effort seems needed
> to periodically remove the sludge and I'm wondering if anyone
> has seen an automatic method that could be built at home. I
> don't really have room for a settling tank, and have to keep the
> health of the fish in mind too of course
>
> Any thoughts or suggestions appreciated
>
> I've thought about trying back-flushing, electrostatics (could
> that be done in water ?), gravity, but not filtering. Filters clog
> quickly and are just too high-maintenance
>
> Joe
>   =20
--=20
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