[Digestion] dry digestion

[christian riu lohri]

Hello Wayne

In collaboration with our local partner, we are currently conducting
experiments on a pilot scale dry fermentation plant (made of a
shipping container, 33 m3) as treatment option of the organic fraction
of municipal solid waste in Kumasi, Ghana. Two Swiss students wrote
their MSc thesis about it. You can download it for free under:
http://www.eawag.ch/forschung/sandec/publikationen/swm/organic_waste_management
(Biowaste from Solid Waste - Conception and Construction of a Dry
Fermentation Plant for Developing Countries). Although located in a
different climatic context, you might still find some useful
information.

Feel free to contact me if you wish further information.

Cheers,
Christian

°°°
Christian Riu Lohri
Eawag (Swiss Federal Institute of Aquatic Science and Technology)
Sandec (Water and Sanitation in Developing Countries)
Überlandstrasse 133
P.O. Box 611
8600 Dübendorf
Switzerland

christian.lohri at eawag.ch
www.sandec.ch


2012/2/13 Michael Köttner <m.koettner at biogas-zentrum.de>:
> Hi Wayne,
>
> if you are interested in commercial dry fermentation we would be a good
> address as we have 12 years of experience with this technology, design and
> planning batch and continous operation technology. You could learn more about
> it on our study tour and training course taking place in Stuttgart at the end
> of March.
>
> More see under www.biogas-zentrum.de
>
> 20-25 m3 size digesters are however possible but only recommended as
> experimental operation as the gas production will be too low to earn good
> revenue to pay back the investment for the plant. With lower investment using
> used parts and existing vessels etc. the safety and emission issue is too
> great to overcome as such a plant is no easy to be approved by the
> authorities.
>
> Regards
>
> Michael Köttner
>
> ---
>
>
> IBBK Fachgruppe Biogas GmbH
> (International Biogas and Bioenergy Centre of Compentence IBBK)
> Am Feuersee 6, 74592 Kirchberg/Jagst, Germany
>
> Fon: +49 (0)7954 926203
> Fax: +49 (0)7954 926204
> www.biogas-zentrum.de
>
> Geschäftsführer/Managing Director: Dipl. Agr.biol. Michael Köttner
> Steuernummer/Tax-Nr.: 57073/21766
> UmSt.ID/VAT-ID: DE213140113
>
> Veranstaltungen/Events:
> BiogasWorld 2012 in Berlin: http://www.biogas-world.de
> GasHighWay-Abschlussworkshop in Brüssel:
> http://www.gashighway.net/default.asp?sivuID=28335
> EE & RES 2012 in Sofia, Bulgarien: http://www.eeandres.viaexpo.com/en
>
> *** Besuchen Sie auch unseren Buchshop: http://www.biogas-buchshop.de/ ***
> *** Please also visit our bookshop: http://www.biogas-bookshop.com/ ***
> ________________________________
>
> Fördergesellschaft nachhaltige Biogas und Bioenergienutzung (FnBB) e.V.
> (German Society for sustainable Biogas and Bioenergy Utilisation, GERBIO)
> Am Feuersee 8
> 74592 Kirchberg/Jagst
> Germany
>
> Fon: +49 (0)7954 921969
> Fax: +49 (0)7954 926132
>
> www.fnbb.org
> www.gerbio.org
>
> Vorstandsvorsitzender/Chairman: Dipl. Agr.biol. Michael Köttner
> Stellvertretender Vorsitzender/Vice-Chairman: Dipl.Ing. Heinz-Peter Mang
> Registergericht: Amtsgericht Langenburg
> Registernummer: VR224
> Steuernummer: 57075/04800
>
>
>
>
> Am Sonntag, 12. Februar 2012, 21:15:13 schrieb Wayne Zschech:
>> G'day all!
>>
>> Greetings from very frozen Ukraine!
>>
>> Does anyone have any experience in using dry digestion?  I am planning on
>> using food waste and grass, leaves etc. I am hoping to avoid adding water
>> which creates a very diluted fertilizer and I presume that there would be
>> an increases in energy consumption of trying to keep (or reheat) all that
>> liquid in a low solid system.
>> I really like the OWS Dranco type of configuration. I have been told that
>> the thermophilic reaction is more unstable in general but maybe someone
>> still has a working model that is simple enough to run on small scale or
>> around 20-25m3.  I am happy to do a multistage process if I can get a more
>> concentrated NPK product.
>>
>> Please share any info that may be beneficial.
>> Blessings,
>> Wayne
>
>
> _______________________________________________
> Digestion mailing list
>
> to Send a Message to the list, use the email address
> Digestion at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
>
> for more information about digestion, see
> Beginner's Guide to Biogas
> http://www.adelaide.edu.au/biogas/
> and the Biogas Wiki http://biogas.wikispaces.com/
>