Your SlideShare is downloading. ×
Twinwoods Case Study
Upcoming SlideShare
Loading in...5

Thanks for flagging this SlideShare!

Oops! An error has occurred.

Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Twinwoods Case Study


Published on

Bioenergy West Midlands …

Bioenergy West Midlands
Anaerobic Digestion Event and Site Visit
17th March 2009

Published in: Business, Technology
  • Be the first to comment

  • Be the first to like this

No Downloads
Total Views
On Slideshare
From Embeds
Number of Embeds
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

No notes for slide


  • 1. BiogenGreenfinch Simon Christian Project Surveyor Tuesday 17th March 2009
  • 2. Presentation Format 1. Twinwoods AD Plant – operational parameters 2. Feedstock 3. Bio-fertiliser utilisation
  • 3. BiogenGreenfinch – Twinwoods plant Operational plant –  Processing capacity of circa 42k tonnes of feedstock  12,000 cu.m of pig slurry  30,000 tonnes of mixed food chain waste  4,400 cu.m of digester vessels and 15,500 cu.m of Bio-fertiliser storage  Producing 1.1Mwatts of Electricity Commercial plant in farm situation  Designed to be flexible (feed stocks, wrapped and unwrapped, liquids and solids, future process flow changes) Complete integrated solution  35,000 cu.m of Bio-fertiliser used on the farm Heavily licensed  EA & DEFRA
  • 4. Food Chain Waste Wide range of food waste  Organic liquids  Meats  Fruit and vegetables  Organic sludge  Ready meals  Sandwiches etc Cat 3 Animal By-Products (ABP) Both packaged and non- packaged products Unfrozen and frozen food Plus 6% DM pig slurry
  • 5. Bio-fertiliser § Integrate use in farm setting – high nutrient availability on growing crops – cereals, OSR and grass § Valuable fertiliser  Total Nitrogen 5 to 5.5kg/m3  Crop Available Nitrogen – 4kg/m3  Phosphate – 0.7kg/m3  Potash – 1.9kg/m3  Magnesium – 0.2kg/m3  DM – 4 to 5% § Typically spread at 45 to 50cu.m per hectare on to arable crops
  • 6. Bio-fertiliser Spreading 24m dribble bar spreading on Winter Wheat on 10th April 2007
  • 7. Bio-fertiliser Utilisation - Underground main and umbilical spreading system the only feasible way to spread the volume - Spreading with Para 7a license at present - NVZ regulations are a key factor in spreading volume/Ha - Applications to meet crop need (crop, variety, yield expectation, soil type, soil N) - Twinwoods Bio-fertiliser spread across 600ha with fertiliser saving of circa £120,000/annum to arable business
  • 8. Summary § Twinwoods plant operating at design capacity. § Major design changes to second generation plant as a result of operational experience § Feed stock availability determines the potential scale of the plant, subject to planning § Digestate spreading is a key element to feasibility and determines a major operational limitation to the scale of the plant.
  • 9. Thank you for listening Simon Christian