Practical Aspects of Landfill Gas Management at Greenstar .... John... · Practical Aspects of...
Transcript of Practical Aspects of Landfill Gas Management at Greenstar .... John... · Practical Aspects of...
John Jones – General ManagerEPA Landfill Workshop - 21st October 2009
Practical Aspects of Landfill Gas Management at Greenstar Landfills
Greenstar – who are we?
Established 1999.Irish owned and managed.Part of NTR Plc group of companies – Recycling, Solar, Wind, Biofuel.Ireland’s largest waste management company.Waste collection, Recycling, Composting, Residual Landfill with Energy Recovery.Manages household, commercial and industrial wastes.Award winning recycling and landfill operations.Operates Ireland’s most environmentally compliant landfills.
Greenstar – Integrated Waste Services
Landfills in Ireland
Ballynagran Residual Landfill – WM165-01
Facility opened during October 2006.Accepts 150,000 tpa of residual waste per annum.Currently have approximately 400,000 tonnes of residual waste
in place.Burning approximately +2,600m3/hr of landfill gas.Planning obtained for gas utilisation plant. Awaiting ESB approval. Awarded CIWM PEELs Cup for Operational Excellence during 2008.Awarded International Green Apple Award for Environmental
Best Practice 2009.Awarded ISO 14001 Certification during January 2009.Currently working towards ISO 18001.All Greenstar Landfill are ISO 14001 certified.
Aerial view of Ballynagran Landfill
Why Collect Landfill Gas?
Kyoto Protocol – legally biding agreement for reducing emissions of greenhouse gases.
EU Landfill Directive – “Landfill gas shall be collected from all landfills receiving biodegradable waste and the landfill gas must be treated and used. If the gas collected cannot be used to produce energy, it must be flared.”
Waste Management Licence Conditions – Gas migration / treatment / odour control
EPA Landfill Manuals and BAT for Landfill Operations
EU Renewable Energy Target % national electricity consumptionn
EU Directive 2001/77/EC – national indicative target - 13.2% by 2010
Irish Government Target (2007) – 15% RE by 2010
Irish Government Target (2007) – 33% RE by 2020
Landfill Gas Management
Landfill Gas Collection InfrastructureDrilled WellsBuilt up WellsHorizontal TrenchesPin WellsFlaresGas Engines / Utilisation
Day to day managementBalancing the fieldFID surveysDaily checksRemote access
Waste Acceptance
Waste Acceptance
Some potential sources of gas contamination include:
Commercial lubricants – SiloxanesWastewater treatment sludges – Siloxanes Cleaning agents - Siloxanes Gypsum – Hydrogen Sulphide Crushed demolition waste containing plaster – Hydrogen Sulphide
Ballynagran Landfill Summer 2008
Drilling Gas Wells
Built up Well
Raising a Built up Well
Built up gas well
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Lid
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Lifting eyes
600mm dia. x 3m long steel tube
Drainage stone
125mm slotted pipe
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Waste Surface
0.6 m
Waste
Installing temporary horizontal trench
Installing temporary horizontal trench
Permanent Horizontal Trench at KTK Landfill
Pin Well Installation at Connaught Landfill
Pin Wells on flank at Connaught Landfill
Approximate Costs
Drilled Wells +100 euro/m
Temporary Horizontal Trenches +5 euro/m
Pin Wells +80 euro each
Built Wells +20 euro/m
Cross Section Through Landfill
Landfill Liner
Pin Wells
Built up well
Inter Cell Bund
Temporary Clay Cap3m lift of wasteHighly permeable
woodchip cover
Leachate drainage Blanket
Reinforced Polyethylene Temporary Capping at Connaught Landfill
Temporary Capping at Connaught Landfill
Temporary Capping at Knockharley Landfill
Efficiency in Gas Collection
Galway Landfill Gas Generation and Collection
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2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033
LFG
Col
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(m3/
hr)
Actual gas Collected @ 50% CH4 Golders 2008 Model 50%ile Golders 2008 Model 95%ile
Woodchip Odour Abatement Layer in Daily Cover
Source: Dr. P Solan PhD, University College Dublin 2008
Dr. P Solan, UCD carried out laboratory testing on bio-filtration properties of woodchip when used as bio filtration layer on landfills.
Odour reduction due to application of daily cover on the working face is in excess of50% and virtually 100% when background odours are taken into consideration.
Woodchip cover at Knockharley Landfill
500m3/hr Mobile Flaring Unit
Generator Bunded Fuel Feeder Tank
KO Pot Manifold
Compressor
Flare
Connaught Landfill
Knockharley Landfill
Power Generation
Site Go Live
KTK Currently 3.6 MWKnockharley Late 2009 5.6 MWBallynagran Early 2010 4.2 MWConnaught Early 2010 4.2 MW
Total 17.6MW
Bioverda Power Systems : Power Generation Locations
Current Operating Sites
Site LF Operator Installed Generation
Balleally Fingal CC 5.0MW
Ballyogan Dun Laoghaire Rathdown CC
2.0MW
Friarstown South Dublin CC 0.6MW
Dunsink Fingal CC 1.2MW
Arthurstown South Dublin CC 14.2MW
KTK Greenstar 3.8MW
Kinsale RD Cork City Council 1.0MW
Sites Under Development
Knockharley Greenstar 5.6MW
Ballynagran Greenstar 4.2MW
Kilconnell Greenstar 4.2MW
• In 2008 Greenstar/BPS generated 160GWh – enough to power approx. 30,000 households ~ 5.4% of ROI renewable energy usage.
Arthurstown Landfill, Kill
Power generation from landfill gas started 2005
Site has a total export capacity of 14MW :
Site equipment : 11 engines and 3 booster stations
BPS were responsible for the design, installation and commissioning of the facility.
BPS are responsible for electricity generation and gas flaring infrastructure
BPS are responsible for negotiating power off-take agreements with electricity suppliers.
Annual availability >93% of uptime
Arthurstown MWH Trend
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Mar‐0
8Ma
y‐08
Jul‐08
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8No
v‐08
Jan‐09
High Density of Gas Abstraction Infrastructure at KTK Landfill
High Density of Gas Abstraction Infrastructure at Ballynagran Landfill
Balancing the Gas Field
FID Survey
FID Survey
EPA Landfill Gas ComplianceEPA/OMI Diffuse Source LFG Leakage Comparison on 2009 results to date on regional public file
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Ballynag
ran Landfill
East Galw
ay La
ndfill
Gortadrom
a Landfill
Kinsale
Road Landfill
North K
erry L
andfill
Ballydon
agh Landfi
ll
Ballagh
adereen L
andfill
Derrinum
era Landfill
Ballynac
arrick L
andfill
Powerstown L
andfillRath
oreen Landfi
llArth
urstown Land
fillFacility Name
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ber o
f Diff
use
leak
are
as
Comparison of MSW Landfills EPA Annual Licence Audits 2008
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East G
alway
Land
fill
Knock
harle
y Lan
dfill
KTK Land
fill
Ballyn
agran
Land
fill
Ballea
lly La
ndfill
Derrinu
mera La
ndfill
Inagh
Land
fill
Donoh
ill Lan
dfill
Ballyn
acarr
ick La
ndfill
Gortad
roma L
andfi
ll
Ballyd
onag
h Lan
dfill
Killurin
Land
fill
Kyletal
esha
Land
fill
Dunmore
Land
fill
Whiteri
ver L
andfi
ll
Arthurs
town L
andfi
ll
Corran
ure La
ndfill
Kinsale
Roa
d Lan
dfill
Yough
al La
ndfill
Scotch
Corn
er La
ndfill
Derryc
lure L
andfi
ll
Powers
town L
andfi
ll
Facility Name
No.
of N
on C
ompl
ianc
es
Copies of presentation and visits to any Greenstar facilitiesavailable on request.