GreenYes Archives

[GreenYes Archives] - [Thread Index] - [Date Index]
[Date Prev] - [Date Next] - [Thread Prev] - [Thread Next]

[GreenYes] Re: Indoor composting economics

Title: [GreenYes] Re: Indoor composting economics

I used to run a compost business that handled about 14,000 tons of 
plant debris per year.  The climate in our part of California is 
milder than Boston's, but there are lots of deciduous trees and lots 
of leaves in the fall.  We were blessed with a pretty constant supply 
of clean plant debris to shred and windrow.  We didn't take 
putrescibles back then; urban composting on such a large scale was 
quite new.

But I'm wondering whether the supply if plant debris is as subject to 
wild swings as people on this thread seem to assume.  At our Compost 
Farm there was some seasonality, but it was reflected more in the 
content of the plant debris than its volume.  That's because people 
don't restrict gardening to leaf cleanup, and every season has it's 
major tasks:  in the winter people prune and cut and weed; in the 
spring they clear land, cultivate and weed, in the summer they 
deadhead blooms, harvest fruit and vegetables, and weed.

Composting plant debris is like haircutting; either the hair keeps 
growing and keeps getting cut, or after awhile you're going to look 
pretty disheveled.

By the way, human and animal hair composts well, too.

Dan Knapp
Urban Ore, Inc.
On Mar 31, 2008, at 4:45 AM, Mike wrote:

> The lead on the indoor composting project is Bryan Glascock, Director
> of the Environment Department, his number is 617-635-3850, email is
> "Glascock, Bryan" <Bryan.Glascock@no.address>
> On Mar 28, 3:29 pm, "Doug Koplow" <Kop...@no.address> wrote:
>> Anybody on the list familiar with the Boston proposal?  I'm 
>> wondering how the economics of this will work out, given that the 
>> peak input is leaves, which are highly seasonal.  If the plant is 
>> sized for peak loadings in the fall, it would seem to be 
>> uneconomic the rest of the year.  If a levelized capacity is 
>> targeted instead, there would seem to be storage and emissions 
>> challenges.
>> Certainly, integration of food waste might help reduce the surge 
>> associated with yard waste, but I'm guessing not that much.  If 
>> the food waste is less seasonal, including it would boost the peak 
>> supply of organics.
>> Anybody know how these design challenges have been met?
>> -Doug Koplow
>> _______________________________
>> Doug Koplow
>> Earth Track, Inc.
>> 2067 Massachusetts Avenue - 4th Floor
>> Cambridge, MA
>> Tel:  617/661-4700
>> Fax: 617/354-0463
>>            CONFIDENTIAL
>> This message, and all attachments thereto, is for the designated 
>> recipient
>> only and may contain privileged, proprietary, or otherwise private
>> information.  If you have received it in error, please notify the 
>> sender
>> immediately and delete the original.  Any other use of the email 
>> by you
>> is prohibited.
> >

[GreenYes Archives] - [Date Index] - [Thread Index]
[Date Prev] - [Date Next] - [Thread Prev] - [Thread Next]