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[GreenYes] Re: Food debris belongs outside the pipe.

My impression is that there is impending a paradigm shift in sewage
treatment towards less water-intensive approaches. Anyone read Lester
Brown's Plan B 2.1? Rather than turn food into liquid waste, might we end
up turning liquid waste into solid waste?


At 03:01 PM 7/10/2006, Doug Koplow wrote:

>Given the large quantity of other organic solids that are regularly
>flushed into our sewers (and that are thankfully not going curbside any
>time soon), I'm puzzled by the logic that would underlie diverting ground
>up food waste.
>Certainly large volumes of organic matter can clog or degrade collection
>systems, but I've seen this mostly with regards to large industrial food
>processors, not residential disposals.
>Is there a reason to think that the wastewater treatment plants have
>trouble processing the food wastes, or that, for most collection systems,
>the food waste is a mere incremental addition to normal solids flow?
>Doug Koplow
>Earth Track, Inc.
>2067 Massachusetts Avenue - 4th Floor
>Cambridge, MA 02140
>Tel: 617/661-4700
>Fax: 617/354-0463
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> >>> arthur boone <arboone3@no.address> 07/10/06 05:53PM >>>
>About two years ago, I asked the staff director of the Castro Valley
>Sanitary District if, knowing what food debris diversion programs add to a
>green waste collection program, would his district ban in-sink food
>grinders. (He had earlier in his speech made a comment that in areas of
>his district where clogging was common, by targetting those households
>that were upsteam of the clog points, that they had been able to end the
>clogging by reducing the solids in the sewer pipe because they had
>increased the food debris in the "green waste" bin.)
>Facing my direct question, he was hesistent, but the weight of his remarks
>indicated to me that it is better to put food debris into a green debris
>diversion program than down the wastewater pipe.
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