SUSTAINABILITY WEST MIDLANDS AND SEVERN TRENT GREEN POWER NO TIME TO WASTE NEIL CORRIGALL, MANAGING DIRECTOR, SEVERN TRENT GREEN POWER 22 October 2019
WHAT WE’LL COVER • Who are Severn Trent Green Power? • View on food waste sector • Our food waste AD process • Maximising the benefits of food waste
WHO ARE SEVERN TRENT GREEN POWER?
CAPACITY FOR FOOD WASTE FROM 4M. HOUSEHOLDS 4. East Birmingham - 2015 5. South Wales - 2016 6. North London - 2016 3. West London - 2014 2. Wallingford - 2013 7. West Birmingham - 2017 1. Oxford Cassington - 2010 8. Derby – 2019
HOW WE FIT INTO THE MARKET 265GWh Over a quarter of all English household collected food waste recycled in our AD plants
VIEW ON THE FOOD WASTE SECTOR
THE AMOUNT OF FOOD WASTED IN THE UK Source: Defra Waste Strategy document
SWIFT SECTOR GROWTH SINCE 2010 • 2008 baseline is mainly sewage AD Maturity • Government support arrived between 2008 and 2011: • doubled support for emerging renewables • AD strategy and action plan • Rapid growth, initially in Agri and then food Waste AD plants • Four fold increase in UK AD plants in 6 Emergence years 176 local authorities currently collecting 491,000 tonnes segregated food waste.
THE FUTURE OUTLOOK • 2023 - EU Law will be changed to make separate food waste collections mandatory in Europe • Separate food waste collections already mandatory in Scotland, Wales and Northern Ireland CHANGE IS COMING FOR ENGLAND • DEFRA consulted on Resources & Waste Strategy • “government will legislate to ensure that every local authority provides householders with a separate food waste collection.” • Note the term used in food waste strategy: “HOUSEHOLD LIKE” Mandatory collections for England will require support for funding local authorities’ obligations
OUR FOOD WASTE AD PROCESS
OUR FOOD WASTE AD PROCESS
OUR PRODUCTS Green energy NUTRIENT RICH FERTILISER “DIGESTATE” GREEN ELECTRICITY AND GREEN GAS
WE BELIEVE ANAEROBIC DIGESTION IS THE BEST SOLUTION FOR FOOD WASTE • Top of the waste hierarchy • Recycling • Renewable energy • Organic fertiliser • Captures 500kg of CO 2 per tonne of food waste recycled • Cheaper than In-Vessel Composting for food waste and green waste • Established technology
VIDEO • https://www.youtube.com/watch?v=DfAOrxobh1Q&feature=youtu.be
MAXIMISING THE BENEFITS OF FOOD WASTE
OUR ADVICE FOR YOUR KEY CONSIDERATIONS 1. Are you simply looking for a service solution, or do you want to own and operate a plant? 2. How to avoid a solution to the things that can and have gone wrong for AD plants 3. A list of questions that we’d ask ourselves if we were looking for a strong AD partner to help us make the most of the opportunity
MANY PAINFUL LESSONS FOR THE SECTOR ODOUR AND NOISE NUISANCE GRIT AND PLASTICS CARRY OVER LEADING TO • Unforeseen downtime and long queues for deliveries • Inappropriate location • Contamination of digestate • Inadequate design • Excessive tank cleaning, limiting new deliveries • Poor maintenance • Poor process control HEALTH AND SAFETY POLLUTION OF WATERCOURSE • Fire • Poor tank design and construction • Explosion • Inadequate bunding • Un-breathable • Inadequate O&M checks atmospheres
WHAT WOULD WE CONSIDER WHEN LOOKING TO MAXIMISE THE BENEFIT? WASTE ACCEPTANCE & VEHICLE TURNAROUND DEPACKAGING ABILITY & FLEXIBILITY ✓ Can vehicles get in and out swiftly? ✓ Can they consistently handle your type ✓ What vehicle types, waste types & levels of of material? ✓ Is it an efficient operation? contamination are accepted? ✓ Are the tipping areas safe, clean and ✓ Are staff flexible and willing to work compliant? through issues? ✓ How many times do they reject loads? RELIABILITY & BIOLOGICAL STABILITY FINANCIAL STABILITY ✓ If digester health is not stable they will ✓ Is the business truly financially need to turn away vehicles? sustainable? ✓ Does the facility setup allow for ✓ What is their power performance? contingency/rapid repair or replacement? Power production = £’s ✓ Do they have other plants in their fleet ✓ Can they sustain the gate fees being that they could divert your waste to if they offered? can’t process it? ✓ What and where is their digestate market?
IN CONCLUSION • Encouraging central government direction on food waste • Anaerobic digestion provides the circular economy solution • Many considerations for local authorities on how best to maximise the benefits of moving to source segregated food waste
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