[Digestion] Digestion of Grape Pomace and Winery Wastewater Sludge

[Paul Harris]

G'day All,

 

We are considering a similar project here, so far it appears doable!

 

Happy digesting,

HOOROO

 

Mr. Paul Harris, Room S116b, Waite Main Building Faculty of Sciences, The
University of Adelaide, Waite Campus, PMB 1, Glen Osmond SA 5064 Ph    : +61
8 8303 7880      Fax   : +61 8 8303 4386
<mailto:paul.harris at adelaide.edu.au> mailto:paul.harris at adelaide.edu.au
<http://www.adelaide.edu.au/directory/paul.harris>
http://www.adelaide.edu.au/directory/paul.harris

 

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From: digestion-bounces at lists.bioenergylists.org
[mailto:digestion-bounces at lists.bioenergylists.org] On Behalf Of Tom Miles
Sent: Monday, 14 February 2011 6:36 AM
To: 'For Discussion of Anaerobic Digestion'
Subject: [Digestion] Digestion of Grape Pomace and Winery Wastewater Sludge

 

A winery produces grape pomace and sludge from their wastewater treatment.
They have been considering thermal conversion but it seems to me that AD
would be a better choice for recovering nutrients (N P K S) that are
otherwise problems in gasification or combustion.

 

Can grape pomace be digested or are there components such as residual
alcohol than interfere with digestion?

 

How much biogas can be produced from 1 ton of grape pomace at 55% MC (or
0.45 dry tons)?

 

It seems to me that the capital cost will be higher but the operating costs
and life cycle costs and benefits (present value of the costs an revenues)
from pollution control, volume reduction, nutrient recovery in liquid and
solid digestate and energy recovery would be higher with AD than with
thermal conversion. Bad assumption or worth investigating? Has anyone done
this comparison?

 

Thanks

 

Tom Miles    

 

 

 

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