[Digestion] Anaerobic digestion turn key contractors in India, preferably Delhi area

[Aiden Short]

Dear Dr. Karve,

Thank you for your response. The main objective of the installation is to
valorise the organic fraction of the incoming solid waste thereby diverting
it from landfill. The reason I was thinking of digestion was more as a
space saver compared to composting. Indeed the site we have been supplied
with may be slightly on the small side for composting such large amounts.
The methane is really just a bonus in the system and a lesser amount may
not be such a problem.

What would be the space requirements and retention times of a purely
oxidative system as you described in your previous note? Do you have
examples of somewhere such a system is installed and running? Would the
output really be only water and CO2, surely there will be a substantial
solid fraction? If so, can it be used as fertiliser?

Thanks again

Aiden

On Wed, May 16, 2012 at 12:48 AM, Anand Karve <adkarve at gmail.com> wrote:

> Dear Mr. Short,
> do you wish to convert the organic fraction into methane or carbon
> dioxide? Nisargaruna is a biphasic system, in which the material is first
> subjected to aerobic digestion, using water preheated by a solar water
> heating system. The aerobically digested material is then introduced into
> an anaerobic chamber to get methane out of it. In this process, the more
> easily digested fraction, which would have normally produced methane under
> anaerobic conditions, gets oxidised to carbon dioxide in the aerobic phase
> itself, so that only the difficult-to-digest part goes into the anaerobic
> phase to yield a bit of methane. The figures that I got from a lecture by
> Dr. Kale (which I attended about 7 years ago) was that Nisargaruna yielded
> only about 1% methane on the basis of the dry weight of the organic matter
> introduced into it. After hearing Dr. Kale, I felt that it was too much of
> a bother and too much of an expense to get such a low yield of methane. It
> might be more economical to have only the aerobic phase, just oxidise the
> organic matter into carbon dioxide and water, and to use the water along
> with the dissolved mineral components for irrigating plants to save
> on fertilizer.
> Yours
> A.D.Karve
> On Tue, May 15, 2012 at 10:44 AM, davidf at kingdombio.co.uk Fulford <
> davidf at kingdombio.co.uk> wrote:
>
>> Dear Aiden Short and listers,
>>
>> Look at the Nisargruna system developed by BARC in Mumbai (see www.barc.ernet.in
>> ). There are several groups seeking to commercialise this system in
>> India. Dr Kale of BARC can advise you.
>>
>> Best wishes,
>> David F
>>
>> ********************************************************************
>> Dr David Fulford CEnv MEI, 15, Brandon Ave, Woodley, Reading RG5 4PU
>> d.j.fulford at btinternet.com, Tel: +44(0)118 326 9779 Mob: +44(0)7746
>> 806401
>> Kingdom Bioenergy Ltd, www.kingdombio.com, davidf at kindombio.com
>> Skype Identity: djfulford
>>
>>
>> ------------------------------
>> *From*: "Aiden Short" <aidenshort at gmail.com>
>> *Sent*: 15 May 2012 02:09
>> *To*: Digestion at bioenergylists.org
>>
>> *Subject*: [Digestion] Anaerobic digestion turn key contractors in
>> India, preferably Delhi area
>>
>>
>> Hello,
>>
>> The connection to this list was provided to me by Christian Lohri of
>> EAWAG.
>>
>> I am in the process of designing a 12 TPD Materials Recovery Facility for
>> the municipality of Gurgaon, an outskirt of Delhi. I am hoping of treating
>> the organic fraction of this waste (an estimated 6 TPD) through anaerobic
>> digestion. I am therefore looking for any contractor who may be able to
>> work on a design and implementation scheme for an anaerobic digestion plant
>> in Gurgaon. It would be preferable if the contractor had experience of
>> plants of similar size.
>>
>> I would be grateful for any assistance you may be able to provide and
>> look forward to hearing back from you soon
>>
>> --
>> Aiden Short
>> Technical Adviser
>> Chintan Environmental Research and Action Group
>> C14 Second Floor
>> Lajpat Nagar
>> Delhi
>> India
>> +918445738592
>>
>>
>>
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>> http://www.adelaide.edu.au/biogas/
>> and the Biogas Wiki http://biogas.wikispaces.com/
>>
>>
>>
>
>
> --
> ***
> Dr. A.D. Karve
> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
>
>
>
> _______________________________________________
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> 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/
>
>
>


-- 
Aiden Short
Technical Adviser
Chintan Environmental Research and Action Group
C14 Second Floor
Lajpat Nagar
Delhi
India
+918445738592
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