🚀 go-pugleaf

In <4b6od3$99t@classic.iinet.com.au> Harry <hwb@iinet.net.au> writes:

>bernie@metapro.DIALix.oz.au (Bernd Felsche) wrote:
>>Bar-codes? Too easy to forge!

>how do you forget a barcode, it is just a number or set of 
>letters, which could be the street address

No,no,no FORGE, as in counterfeit.

>>
>>I believe that you can get chips embedded in the bin, which is then
>>read by the grabber using a weak radio signal. This system has been
>>successfully trialed and is now probably in use in some areas of Europe.
>>
>>The chip costs less than $1, which is almost insignificant compared
>>to the cost of the bin itself, and the total cost of managing refuse.
>>
>Being a pesimist - does Metapro produce such a system ??

No.

>>Landfill "management" of disposal probably has a higher sensitivity
>>to the volume than the mass.

>I disagree - if the masses stopped throwing away recycleable 
>items, less landfill sites wouls be nedded (sorry, could not 
>resist it)  :)

Once again, you are reading that which is not there. Even with fewer
sites, and smaller sites, they still require some level of management
and control.

And Bernd is correct, the main issues with landfill are the two volumetric
measures, the short-term volume and the long-term volume:

A mid-to-large short-term volume can be tolerated if a small long-term
volume can be achieved. Mass of the refuse is almost irrelevant. A lot
of the research into landfill practices is directed towards the reduction
of longterm volume. You see, most materials in landfill do not break down
much, as they end up in a very dense anerobic environment. The main
reduction agents (bacteria, fungi, insects, etc) are strongly aerobic,
so the aim is how to compact the waste in such a way that is packs small,
but will still permit aerobic activity over the 10 years after backfilling.

This is being researched now, and is is also the source of the landfill
by-product use projects (eg landfill gas power generators, etc).

-Rob.


-- 
Rob Masters, Metapro Systems P/L.  rdm@metapro.DIALix.oz.au <std/disclaimer.h>
"When I was young, I promised myself that I would die doing something noble,
 brave, and futile...Maybe it was not such a hopeless dream after all!"
- Lando (Babylon 5 "A Voice in the Wilderness")