Cob: reed-filter (was: Learn to build 3 types of ecological toilet and graywater systems)

[mango]

Does anyone know about or has any experience with reed-filter "things" to purify
water (grey water?) This really interests me, but i could almost find no
information about it.

Center for Ecological Pollution Prevention wrote:

> Learn how to build 3 types of composting toilets and a graywater system--and
> enjoy the beauty of Baja California Sur Mexico!
>
> The Center for Ecological Pollution Prevention (CEPP) will conduct Baja
> EcoSan Camp, with 3-day and 10-day options, starting March 26 (ask about
> other dates in April).
>
> The setting is Ensenada Blanca, just outside of Loreto, BCS.
> See the website for details: http://www.cepp.cc/workshops.html (scroll down
> the page)
>
> Co-facilitator is Carol Steinfeld, coauthor of The Composting Toilet System
> Book, Reusing the Resource, and Toilets in Paradise.
>
> NEW: CEPP will also offer a three-day composting toilet (dry and
> water-flush) and graywater system workshop at an orphanage in Tijuana. DTBA.
>
> Other workshops in 2001: In U.S. (Masschusetts, Colorado), Fiji and Nepal.
> Contact CEPP for more details.