Developing the use of Developing the use of digestate in the UK - - PowerPoint PPT Presentation

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Developing the use of Developing the use of digestate in the UK - - PowerPoint PPT Presentation

Oct 03, 2022 132 likes •349 views

Developing the use of Developing the use of digestate in the UK digestate in the UK Clare T. Lukehurst Clare T. Lukehurst Task 3 7 ( UK) PROBI OGAS Task 3 7 ( UK) PROBI OGAS I EA Bioenergy Task 3 7 Sem inar I EA Bioenergy Task 3 7 Sem

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SLIDE 1

Developing the use of Developing the use of digestate in the UK digestate in the UK

Clare T. Lukehurst Clare T. Lukehurst Task 3 7 ( UK) PROBI OGAS Task 3 7 ( UK) PROBI OGAS I EA Bioenergy Task 3 7 Sem inar I EA Bioenergy Task 3 7 Sem inar 2 8 2 8 th

th April 2 0 0 9 Jyvaskyla Finland

April 2 0 0 9 Jyvaskyla Finland

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SLIDE 2

Government’s shared goals for Government’s shared goals for anaerobic digestion anaerobic digestion

  • I n UK anaerobic digestion w ill be:

I n UK anaerobic digestion w ill be:

  • Established technology

Established technology

  • Produce renew able energy ( for heat,

Produce renew able energy ( for heat, pow er & transport pow er & transport

  • Mitigate m ethane em ission from

Mitigate m ethane em ission from agriculture agriculture

  • Divert m ethane organic w aste from

Divert m ethane organic w aste from landfill landfill

Source: DEFRA

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SLIDE 3

Huge resource or problem Huge resource or problem

DEFRA calculations: DEFRA calculations:

1 0 0 m illion 1 0 0 m illion tonnes of organic material tonnes of organic material

  • f w hich
  • f w hich

1 2 1 2 -

  • 2 0 m illion

2 0 m illion tonnes of food waste inc.50% tonnes of food waste inc.50% source separated MSW source separated MSW 9 0 m illion 9 0 m illion tonnes of animal manure tonnes of animal manure 1 .7 3 1 .7 3 million tonnes of sewage sludge million tonnes of sewage sludge Digestate output approxim ately 8 0 m t/ year Digestate output approxim ately 8 0 m t/ year

Source: DEFRA Source: DEFRA

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SLIDE 4

Digestate a source of nutrients Digestate a source of nutrients

Quantity difficult to Quantity difficult to assess assess – – depends depends

  • n TS content of
  • n TS content of

the feedstock the feedstock

Sources: Sources:

1 1 Biocycle Biocycle 2 I ndicative average 2 I ndicative average 3 .MAFF RB 2 0 9 3 .MAFF RB 2 0 9

Source Source Total Total N N Kg/ t Kg/ t P P

2 2 O

O Kg/ t Kg/ t K K

2 2 O

O Kg/ t Kg/ t Food w aste Food w aste 1

1

8 .0 8 .0 2 .5 2 .5 3 .8 4 3 .8 4 Anim al Anim al m anure m anure 2

2

6 .0 6 .0 2 .2 9 2 .2 9 6 .9 6 .9 Sew age Sew age sludge sludge 3

3

7 .5 7 .5 9 .0 9 .0 Trace Trace

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SLIDE 5

Using the biofertiliser produced Using the biofertiliser produced in a farm digester in a farm digester

NH NH

4 4 -

  • N

N P P

2 2 O

O

5 5

K K

2 2 O

O Crop dem and / t Crop dem and / t 1 5 2 1 5 2 8 1 8 1 9 8 9 8 From ow n biofertiliser/ t From ow n biofertiliser/ t ( Digestate from m aize & ( Digestate from m aize & grass silage, m anure, & grass silage, m anure, & citrus pulp) citrus pulp) 1 1 8 1 1 8 1 0 4 1 0 4 1 8 0 1 8 0 Deficit to be m ade up from Deficit to be m ade up from m ineral fertiliser m ineral fertiliser 3 4 3 4 tonnes tonnes None None None None

Gross saving on purchase of m ineral fertiliser £ 3 7 ,0 0 0 Euros Source: M.A.Piper & Son Farm s

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Producing digestate Producing digestate

  • Farm ers ow n biogas plants co

Farm ers ow n biogas plants co-

  • digesting anim al m anure w ith energy

digesting anim al m anure w ith energy crops crops

  • Farm energy enterprises with food

Farm energy enterprises with food waste and other industrial residues waste and other industrial residues ( Major governm ent initiative ( Major governm ent initiative)

)

  • Local authority/ environmental

Local authority/ environmental resource management company resource management company

  • wned plants (
  • wned plants ( Rapid uptake of AD)

Rapid uptake of AD)

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Producing digestate: farm plants Producing digestate: farm plants

Farm scale plants 5 ,0 0 0 -3 0 ,0 0 0 tonnes per year. Process ow n slurry

  • r co-digest w ith

energy crops

Photo: Courtesy of Greenfinch Ltd (now Biogengreenfinch Ltd)

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SLIDE 8

Producing digestate: farm energy Producing digestate: farm energy enterprise enterprise

Farm scale 4 0 ,0 0 0 t/ year co- digestion of pig m anure w ith source separated m unicipal w aste ( food) collected from households, food processing plants including anim al by- products, etc

Photo: Courtesy of Biogen (UK) now Biogengreenfinch Ltd

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Producing digestate Producing digestate -

  • A centralised

A centralised biogas plant biogas plant

1 4 6 ,0 0 0 t/ year Constructed in 2 0 0 2 to co-digest anim al m anure and industrial w astes from the food processing industries including anim al by-products but since 2 0 0 7 co-digests m ainly residues from the food processing industries

Photo: Courtesy Charles Clarke, Holsworthy Biogas

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Quality protocol for production and use Quality protocol for production and use

  • f quality outputs from AD of source
  • f quality outputs from AD of source

separated biodegradable waste separated biodegradable waste

  • Required by the Environment Agency

Required by the Environment Agency to define when the digestate can be to define when the digestate can be used as a product rather than a used as a product rather than a waste waste

  • Describes how the digestate is to be

Describes how the digestate is to be used used

  • Would not be applicable in Scotland

Would not be applicable in Scotland

  • Source: WRAP

Source: WRAP

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SLIDE 11

Main purpose of the protocol Main purpose of the protocol

  • Clarifies when waste controls are no

Clarifies when waste controls are no longer required longer required

  • Ensures environmental protection

Ensures environmental protection

  • Provides users with certainty that the

Provides users with certainty that the product conforms with a standard product conforms with a standard

Source: WRAP Source: WRAP

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Need for a quality protocol Need for a quality protocol

  • Confidence in the product

Confidence in the product

  • Clarity for regulators and regulated

Clarity for regulators and regulated

  • W aste status a barrier

W aste status a barrier

  • Developm ent of a quality protocol

Developm ent of a quality protocol depends on the existence of a quality depends on the existence of a quality specification specification

  • Builds on experience from PAS 1 0 0

Builds on experience from PAS 1 0 0 for com post for com post

Source :W RAP

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Key elements of standard (PAS 110) Key elements of standard (PAS 110)

  • Defined input list

Defined input list Source segregated biowastes Source segregated biowastes Biodegradable non Biodegradable non – –waste material waste material Allows for packaged waste Allows for packaged waste

  • Supply agreem ent w ith w aste supplier

Supply agreem ent w ith w aste supplier AD operator knows what inputs are AD operator knows what inputs are AD operator undertakes analysis as appropriate AD operator undertakes analysis as appropriate

  • Process control

Process control A badly run plant will produce a bad product A badly run plant will produce a bad product Minimum quality set for whole digestate & separated fibre Minimum quality set for whole digestate & separated fibre

Source: W RAP Source: W RAP

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SLIDE 14

Pasteurisation Pasteurisation

  • ABPR treatment or equivalent for all waste

ABPR treatment or equivalent for all waste

  • Pasteurisation required if material moved

Pasteurisation required if material moved between farms between farms

  • Not required if the input m aterial is

Not required if the input m aterial is produced and used on the sam e farm produced and used on the sam e farm Regular sam pling and analysis covers Regular sam pling and analysis covers pathogens, PTEs, stability, physical contaminants pathogens, PTEs, stability, physical contaminants & provides nutrient declaration & provides nutrient declaration

Source: W RAP Source: W RAP

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SLIDE 15

The current position The current position

  • Quality protocol awaiting signing off

Quality protocol awaiting signing off by the EC Technical Standards by the EC Technical Standards Committee Committee – – Formal issue 2009 Formal issue 2009

  • PAS 110 ( the Standard) awaiting

PAS 110 ( the Standard) awaiting the final work on the stability and the final work on the stability and the PTE limits the PTE limits

  • Aim to finalise Spring 2009

Aim to finalise Spring 2009

  • Will be available as pdf

Will be available as pdf

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Government capital grant Government capital grant support support

W RAP organics capital grant program m es W RAP organics capital grant program m es

  • Proven technologies

Proven technologies

  • 1 6 .1 5 M Euros ( England, Scotland NI )

1 6 .1 5 M Euros ( England, Scotland NI )

  • W elsh Assem bly 4 2 .4 M Euros capital grants

W elsh Assem bly 4 2 .4 M Euros capital grants

  • New Environm ental Transform ation Fund

New Environm ental Transform ation Fund

  • Cutting edge technology 1 0 .0 6 M Euro

Cutting edge technology 1 0 .0 6 M Euro ( England only) ( England only)

  • 1 0 6 M Euros announced in the April 2 0 0 9

1 0 6 M Euros announced in the April 2 0 0 9 budget for the anaerobic digestion of food budget for the anaerobic digestion of food w aste w aste

  • Exchange rate 1 .0 6 Euros = £ 1

Exchange rate 1 .0 6 Euros = £ 1

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Contracts to CB

REA Secretariat Technical Advisory Committee Contracted Approved Certification Body PAS 110

Chooses Standard & CB

Digestate Producer UKAS

Complies with QP and PAS 110 ? Quality Digestate

YES NO Digestate remains a waste

Independent Committee

Info

The route to certification

Source: Renew able Energy Association

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SLIDE 18

The UK moves forward The UK moves forward

  • Support measures at an

Support measures at an unprecedented level with AD on the unprecedented level with AD on the brink of a massive expansion brink of a massive expansion

  • Digestate as a biofertiliser about to

Digestate as a biofertiliser about to become a major supplier of plant become a major supplier of plant nutrients. nutrients.

  • What PAS 100 did for compost PAS

What PAS 100 did for compost PAS 110 will do for digestate as a 110 will do for digestate as a biofertiliser biofertiliser

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SLIDE 19

Sponsors supporting UK Sponsors supporting UK attendance at the IEA attendance at the IEA

  • The UK industry w ould like to thank DEFRA for their

subscription to the I EA Bioenergy Task 3 7 BERR & DfT Task 3 7 ( UK) w ould like to thank its sponsors of support: Agri-food & Biosciences Research I nstitute, Biogen ( UK) , Bioplex Technologies, Biffa W aste Services, Biogas Nord, Country Land and Business Association, Renew ables East, Greenfinch, Hardstaff Group, Organic Pow er, Royal I nstitution of Chartered Surveyors, Sum m erleaze, Sustraco , Univ. So’ton, Veolia, Xergi A/ S, W EDA-GB & the m any others w ho m ake up the new netw ork for dissem ination

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SLIDE 20

UK on the move UK on the move

  • Support measures at an

Support measures at an unprecedented level with AD on the unprecedented level with AD on the brink of a massive expansion brink of a massive expansion

  • Digestate as a biofertiliser about to

Digestate as a biofertiliser about to become a major supplier of plant become a major supplier of plant nutrients. nutrients.

  • What PAS 100 did for compost PAS

What PAS 100 did for compost PAS 110 will do for digestate as a 110 will do for digestate as a biofertiliser biofertiliser