[Gasification] biodigestion- gassificaiton or incineration

[Tom Miles]

I've often been told that the reason we have a low amount of food waste in
our US refuse compared with Europe is the high use of in-sink dispoal
machines. This always comes up when we compare the composition of refuse
derived fuel especially for gasification or combustion.

Are dispose-all's not used that much in Eastern Canada?

Tom Miles
   

-----Original Message-----
From: gasification-bounces at listserv.repp.org
[mailto:gasification-bounces at listserv.repp.org] On Behalf Of Jan Mowbray
Sent: Friday, May 12, 2006 8:03 AM
To: gasification at listserv.repp.org
Subject: [Gasification] biodigestion- gassificaiton or incineration

With respect to the following statement by Kermit Schlansker,Date: Fri, 5
May 2006 09:41:59 -0500

The overwhelming advantage of biodigestion over all other processes is that
it is a cold process and preserves nitrogen in the effluent and solids. It
also has the advantage that cellulose is the energy source.  I would think
that sewage mixed with alfalfa or other hay in serial septic tanks would
produce energy, fertilizer, and cleaner effluent Since it takes a lot of
energy to produce nitrogen fertilizer this would be a great plus.
Would it therefore follow, that by encouraging use of home in-sink food
waste disposers, we would not only have safer, cleaner effluent at the
sewage treatment plant, but also a quick, clean, cheap, way to dispose of
kitchen organics, with marginal increase of volume to the sewage system,
(using an average of 1.5 litres water/daily).  
It would also have the added advantage of diverting more from landfills,
while reducing the amount of trucks on our roads, using up fuel, spewing
noxious fumes into the atmosphere, and an end product that would be better
in biodigestion or to incinerate or gassify?

Jan Mowbray, Ontario
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