Re: [GBlist] small package wastewater treatment systems?

["John Salmen" <terrain3@home.com>]

Hi David

one of the best passive type systems for environmental performance I know of
is a biological filter developed at the university of waterloo and then
commercialized. Know as the waterloo bio-filter I think. Yes here is the
link http://www.waterloo-biofilter.com/. Capable of small to large flows
(expandable - I think). I remeber the univ. were also working on a carbon
mat intended to replace drainage gravel in field runs that effectively
removed nitrates - don't know if that has been commercialized. The biofilter
built on sand filter technology which is the next step down for passive but
has the potential of being site-built - David Venhuizen has done some
wonderful work on a recirculating and de-nitryfiying sand filter treatment
plan - following his name should give you some links - I remember him having
some cad drawings for construction.

Both of the above systems require little energy - and can be expanded upon
or later incorporated in different ways - you can never have too much
treatment.

there are numerous aeration systems around - for me the key is
denitrification as that can have the most toxic affect on the immediate
environment.

luck

John Salmen
TERRAIN EDS

----- Original Message -----
From: <Strawnet@aol.com>
To: <greenbuilding@crest.org>
Sent: Friday, April 20, 2001 2:31 PM
Subject: [GBlist] small package wastewater treatment systems?


> Does anyone have experience with and recommendations for small package
> wastewater treatment systems - sized for individual homes?  We have a
> project for which we are seeking interim solutions to allow time for the
> development of a larger scale biological wastewater system to serve over
> a dozen houses and buildings. I know of and can find info on several
> different manufacturers, but would like to hear from those who have
> direct experience with them if possible.  In the short term we need to be
> able to deal with the wastewater for three houses and a couple of other
> buildings to get certificates of occupancy for them before the larger
> system can be designed and is up and working.  Eventually, all the
> buildings will be on this larger biological system. Any experiences
> and/or recommendations will be most appreciated.
>
> Additionally, I would love to know about state-of-the-art small scale or
> micro-hydroelectric systems if anyone has current info or knows who's who
> in that field.  My contacts and info are a bit dated and I want to be
> better able to analyze what is being proposed in that area as well.
>
> Thanks in advance.
>
> David
>
> David Eisenberg
> Director
> Development Center for Appropriate Technology
> P.O. Box 27513
> Tucson, Arizona 85726-7513 USA
> (520) 624-6628
> (520) 798-3701 Fax
> David@dcat.net
> strawnet@aol.com (direct personal e-mail)
> www.dcat.net
>
> The future is not out there in front of us, but inside us. - Joanna Macy
>
>
> ______________________________________________________________________
> This greenbuilding dialogue is sponsored by REPP/CREST, creator of
> Solstice http://www.crest.org, and BuildingGreen, Inc., publisher of
> Environmental Building News and GreenSpec http://www.BuildingGreen.com
> ______________________________________________________________________
>
>


______________________________________________________________________
This greenbuilding dialogue is sponsored by REPP/CREST, creator of
Solstice http://www.crest.org, and BuildingGreen, Inc., publisher of
Environmental Building News and GreenSpec http://www.BuildingGreen.com
______________________________________________________________________