I have asked the Danish Designer of these systems how do they "stop the
Willow roots from clogging up the "spreading system"?
His response is below and may be of interest.
Laurence Gaffney
Hi Laurence
Thank you for your interest of the willow systems that I have developed in
1996.
Your question is difficult to explain short. But they do not clog spreading
system if the system is dimensioned very exact, the right system for
spreading is used and the rigtht cover of the system is used. And they do not
penetrate the membrane egihter. It is a question of balance between water
amount and nutrients more or less. If the willow have enough water and enough
nutrients and they are cut down in correct cycle the growth of roots are very
limited. Only roots this as sewing treat is developed.
Best regards
Peder
--------------------------------------------------------------------------------
Fra: Laurence Gaffney [l.gaffney@bigpond.com]
Sendt: 11. juli 2010 22:52
Til: psg@pilerensning.dk
Emne: Willow Wastewater Purification systems
Hello Peder
How do you stop the Willow roots from clogging up the "spreading system"?
Laurence Gaffney
Australia
>From venaurafarm@bellsouth.net Thu Jul 15 17:20:46 2010
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On 7/15/2010 3:16 PM, paul wheaton wrote:
> This general concept has been discussed from a variety of home scale
> angles in the rather massive thread at permies called "tree bog vs.
> dry outhouse":
>
>http://www.permies.com/permaculture-forums/953_0
>
> And then for which species that might be a better fit than willow,
> check out the thread called "poop beast":
>
>http://www.permies.com/permaculture-forums/1281_0