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RE: [greenyes] Biosolids Injection Wells


The problem with most sewage sludge is the presence in it of undesirable contaminants
such as heavy metals. Composting sludge (actually this normally means co-composting it
with green material) dilutes the problem but doesn't make it go away. Given this,
landfilling is probably still the preferred alternative for most if not all sludge. The
real solution is to get the contaminants out of the sludge, but this would mean radical
changes (mainly to stop the contaminants from getting into the sludge to begin with) that
sewage treatment plant operators have little interest in.
-- Steve Bloom

> -----Original Message-----
> From: Eric Lombardi [mailto:eric@no.address]
> Sent: Tuesday, February 17, 2004 11:27 AM
> To: 'Art Krenzel'; greenyes@no.address
> Subject: RE: [greenyes] Biosolids Injection Wells
>
>
> Art,
>
> You say that " Land application of biosolids works well when done using
> appropriate agronomic rates for ALL the components in the Biosolids."
>
> My local sludge utility is thinking of switching from land application
> to some sort of composting system. It is going to be a lot more
> expensive ... should they do this switch for environmental reasons, or
> is land application considered an acceptable "green" activity?
>
> Anyone else have an opinion?
>
> Eric
>
> Eric Lombardi
> Executive Director
> Eco-Cycle, Inc
> Boulder, CO
> 303-444-6634
> www.ecocycle.org
> "Recycling may not save the world, but the recycling spirit might."
>
>
>
> -----Original Message-----
> From: Art Krenzel [mailto:phoenix98604@no.address]
> Sent: Tuesday, February 17, 2004 10:09 AM
> To: greenyes@no.address
> Subject: Re: [greenyes] Biosolids Injection Wells
>
> Keith,
>
> Have you considered the effects of disposing of human pathogen laden
> materials into pristine, pathogen free soil formations? Not to mention
> the
> physical difficulty of pumping bioSOLIDS into tight oil formations.
> Let's
> not unknowingly create a longer term problem by myopically seeking a
> solution for a near term problem ala MTBE.
>
> Land application of biosolids works well when done using appropriate
> agronomic rates for ALL the components in the Biosolids.
>
> Art Krenzel, P.E.
> PHOENIX TECHNOLOGIES
> 10505 NE 285TH Street
> Battle Ground, WA 98604
> 360-666-1883 voice
> phoenix98604@no.address
>
> ----- Original Message -----
> From: "keith mcdonald" <weedeat@no.address>
> To: <greenyes@no.address>
> Sent: Tuesday, February 17, 2004 5:23 AM
> Subject: [greenyes] Biosolids Injection Wells
>
>
> > I have read a lot on using old oil wells for injection of biosolids
> deep
> > underground is the really a good method of disposing of biosolids or
> is
> land
> > applying biosoilds a better way of recycling the material. Thanks
> Keith
> > McDonald
> >
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