Is it too late for AD

Discussion in 'Renewable Energy' started by mawleymoos, Nov 28, 2016.

  1. Chippy

    Chippy Member

    Location:
    Cumbria
  2. RKE-Biogroup1

    RKE-Biogroup1 New Member

    Location:
    West Sussex
    Just wanted to give our opinion on the original question for this thread. We don't think it is too late for AD plants especially with the new revised tariffs expected to be release in the first 2 quarters of this year.
     
  3. Chippy

    Chippy Member

    Location:
    Cumbria
    What are you expecting RHI to do and when’s the next change?
     
  4. Coo man

    Coo man Member

    yes but planning takes time !
     
  5. RKE-Biogroup1

    RKE-Biogroup1 New Member

    Location:
    West Sussex
    Yes Coo man, planning is a big part of the process. But, after planning has been approved for the site we an begin the construction of the plant. We give ourselves 12 months from the start of construction to the completion of the plant but we use this as a guide as we expect to finish site a lot faster than this.
     
    Coo man likes this.
  6. mawleymoos

    mawleymoos Member

    Location:
    Shropshire
    Any latest on fits? It would be nice to see slurry based systems being viable! We got in just before the rocs finished! What are you proposing rke?
     
  7. Hard Graft

    Hard Graft Member

    Location:
    British Isles
    It would be nice fotr it to be viable with out subs
     
  8. Whynot

    Whynot Member

    Location:
    Rugby
    As would wind,solar,nuclear,GSHP,etc.

    And Farming..............
     
    Will Wilson and Rob_AD like this.
  9. Will Wilson

    Will Wilson Member

    Location:
    Essex
    'And Farming'
     
  10. RKE-Biogroup1

    RKE-Biogroup1 New Member

    Location:
    West Sussex
    We haven't yet seen the revised tariffs released as of yet!
     
  11. Mucktogold

    Mucktogold Member

    Location:
    Suffolk
    This more honest than some of the claims made at ABDA show.

    Does anyone know how many Ever Greengas and AD4Energy digestors were sold and how many are working to full capacity? Someone mentioned 30 or more sold?
     
    RKE-Biogroup1 likes this.
  12. sjt01

    sjt01 Member

    Location:
    North Norfolk
    Visted an AD4Energy site last week, seemed to be performing OK. Not the way I would have done it, but working fine
     
  13. mawleymoos

    mawleymoos Member

    Location:
    Shropshire
    hi all! I have been asked to share this! (i hope it works) basically, it is a flier from our installer OMNI, things have settled down, it is doing really well now, and they have created the following!
    https://goo.gl/QzrmiH
     
    Foregoneconclusion, bigw and Chippy like this.
  14. I have a question for you biogas chaps: what is the average residence time for these systems, and if they are being 'fed' daily with whatever cubic metres of 'food', does that mean you are removing a similar volume of digestate daily as well? I mean, if you say you expect a residence time of 30 days, how do you know the material inside did stay in there 30 days, and isn't just the stuff you loaded last week, if you see what I mean?
     
  15. mawleymoos

    mawleymoos Member

    Location:
    Shropshire
    I used to get hung up with the idea that we were pumping out digestate that still has gas in it! And that includes a small amount of slurry that has only just put in! They do mitigate it by where and when they pump from,The good thing is, is that cow slurry is Free, and you have to build a digester to a budget! However I think it applies to all Digester’s! We just have to accept that we catch the majority of the gas at a price that works, and seems to work well!
     
  16. sjt01

    sjt01 Member

    Location:
    North Norfolk
    Our residence time is 50 days, we are feeding about 14 tonnes a day of slurry, silage, beet and whey. We produce about 2.5 tonnes of gas a day, so there is about 11.5 tonnes of digestate a day. About 0.6 tonnes of the digestate is separated as solid (mostly lignin). When the digester dry matter is low (< 8%) we feed back the solids and after being exposed to the air and fungal action, it will be digested completely.
     
  17. Thank you. This is the kind of thing I needed to know.

    Is there a kind of AD monthly magazine or journal I can research in? I am about to write my literature review prior to embarking on my project, I have collected a good array of weed seeds and intend to bathe them in digestate held under laboratory conditions and then assay them to see if they remain viable.
     
  18. sjt01

    sjt01 Member

    Location:
    North Norfolk
  19. That is very kind, I will do that.
     
  20. renewablejohn

    renewablejohn Member

    Location:
    lancs
    Would suggest putting in tomato seeds as a control as you normally find tomato growing in sewage waste in warm climates.
     

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