NO TIME TO WASTE NEIL CORRIGALL, MANAGING DIRECTOR, SEVERN TRENT - - PowerPoint PPT Presentation

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

• 8. Derby – 2019
• 1. Oxford Cassington - 2010
• 2. Wallingford - 2013
• 3. West London - 2014
• 4. East Birmingham - 2015
• 6. North London - 2016
• 7. West Birmingham - 2017
• 5. South Wales - 2016

HOW WE FIT INTO THE MARKET

Over a quarter of all English household collected food waste recycled in our AD plants

265GWh

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
• 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

years

Emergence Maturity

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’

• bligations

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 CO2 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

POLLUTION OF WATERCOURSE ODOUR AND NOISE NUISANCE GRIT AND PLASTICS CARRY OVER LEADING TO

• Inappropriate location
• Inadequate design
• Poor maintenance
• Poor process control
• Unforeseen downtime and long queues for deliveries
• Contamination of digestate
• Excessive tank cleaning, limiting new deliveries
• Poor tank design and construction
• Inadequate bunding
• Inadequate O&M checks

HEALTH AND SAFETY

• Fire
• Explosion
• Un-breathable

atmospheres

WHAT WOULD WE CONSIDER WHEN LOOKING TO MAXIMISE THE BENEFIT?

✓Is the business truly financially sustainable? ✓What is their power performance? Power production = £’s ✓Can they sustain the gate fees being

• ffered?

✓What and where is their digestate market?

WASTE ACCEPTANCE & VEHICLE TURNAROUND

✓Can they consistently handle your type

• f material?

✓Is it an efficient operation? ✓Are staff flexible and willing to work through issues? ✓How many times do they reject loads?

RELIABILITY & BIOLOGICAL STABILITY

✓If digester health is not stable they will need to turn away vehicles? ✓Does the facility setup allow for contingency/rapid repair or replacement? ✓Do they have other plants in their fleet that they could divert your waste to if they can’t process it?

DEPACKAGING ABILITY & FLEXIBILITY FINANCIAL STABILITY

✓Can vehicles get in and out swiftly? ✓What vehicle types, waste types & levels of contamination are accepted? ✓Are the tipping areas safe, clean and compliant?

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