[Digestion] Just starting.

[Paul Harris]

G'day All,

We got fairly good results by putting piggery effluent onto a gravel pad 
and letting it drain (once we got the digester going well). See 
http://www.youtube.com/watch?v=JCJyyA8LlnY for a South African view.

Happy digesting,

HOOROO
Mr Paul Harris
Visitor to The University of Adelaide

On 2/12/2013 11:05 PM, Frans Somebody wrote:
>
> Thank you Kyle & David
> Your quick responses are appreciated & give me more hope that it will 
> work.
> Kyle.
> 1. On temperature. We in Southern Africa are into the hot season, so 
> that will give us time to run our trials, but my reading indicates 
> that a 10 C drop in temp from 38 has a significant effect on the time 
> the manure has to stay in the bag.
> As it is, I guesstimate that I would need about 150 bags! As I don't 
> need the gas, (except to dry the effluent), I will try to heat the bag.
> 2. I  don't think delivering liquid will be an option. There are 
> machines that are available (at a cost!),  to extract water to about 
> 40%. Water removed would be re-used.
> 3. Larger digester. I  am worried that the larger the digeater the 
> more likely there will be 'dead zones' & its not so easy to agitate a 
> bag. I would welcome any more infprmation on this.
> 4. Pebbles in the droppings. This is a very valid point for me. 
> Although are birds are in cages, are floors are earth so I will have 
> to use a system of mix, settle & then pour.
> David.
> 1. That the effluent does not attrack flies is music to my ears!
> 2. I accept that a bag is short to med term, but I need to start 
> trials & anyway hopefully others in the world will be re-inventing 
> digesters, within reason the longer I wait the better chance I have of 
> getting the most up to date system. Interesting about Kenya having 
> made so much progress, when I left in '69 nothing had started. I may 
> well have to pay a visit to see a med size one working.
> 3. Due to very limited space we can not 'lagoon' the liquid, nor can 
> we get the dry grass etc to make compost. I will have to find a way to 
> dry it sufficiently to sell.
> Thank you both for your ideas & time, & ask if anyone else has 
> experience on drying the effluent.
>
>
>
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