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SUEZLANDFILLMCEFINAL.pptxHARECRAG - SUSTAINABLE LANDFILL GAS MANAGEMENT
THE TEAM
SHYAMJITH HARIDAS – Technical Lead
Trainee - Oil and Natural Gas Corporation India Ltd
M.Sc, Engineering Management with Advanced Practice (Underway)
AKHIL PADINJARETHIL VARGHESE – Project Manager
Quality Control and Assurance Engineer - Federal Cables, Abu Dhabi (2 years)
M.Sc, Renewable & Sustainable Energy Technologies (Underway)
SESANTH KUMAR CHITTALURI – Communications Lead
Management Trainee - Tata projects
M.Sc, Construction Project Management + B.I.M (Underway)
INTRODUCTION
Sustainable gas management system at Harecrag
Aging Site
5 Proposals
120 KW Generator
DELIVERABLES
Sustainable landfill gas management at site
Permit Compliance
Removal of Generator
A toolbox of solutions
4
CASE
STUDIES ON ALL 5 SOLUTIONS
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SOLUTIONS
Methane Oxidation
Internal Combustion engines
External Combustion engines
Conversion of L.F.G. to R.N.G.
Energy for Revenue
Low BTU High BTU
Solar Panels
Renewable Energy Option
BIOFILTERS – CONTAINED / CLOSED TYPE
Change of medium in 5 - 7 years
Upto 90% methane destruction rate
6 biofilters with dimensions of 90m x 18m
Incubation period - 14 days
Highest oxidation rate – 90 days
Methane oxidation layer
Gas distribution layer (32-64mm)
0.8m
0.3m
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Passive biofilter system
Methanotrophic bacteria
Temperature
14˚C - 18˚C
ph of water
7.5
Soil mosture
40-60%
BIO WINDOWS
Low OPEX and CAPEX make it financially viable
Closed bed is a modular system
Can be installed by any established supplier
BIOCOVERS
Capping of the whole area must be removed
Passive gas management
High surface area yields low local gas loads
SOLAR PANELS
Renewable energy source to replace the generator
Sunpal Quote recieved 120KW off-grid system
709 KWh/day
Encouraged by the agency
Competitors ------------------->
10
Let’s look at some numbers
Last 5 years
Diesel + Generator hire + Flare =
£ 98,275
Diesel for 1 hr
Full load : 32 litres
3/4th load : 24 litres
½ load : 16 litres
Cost of fuel
CAPEX
(Off-grid system)
¾ Load 4.25 years
½ Load 6.38 years
¼ Load 12.77 years
Fuel Cost
(3.19 years)
Generator = 1216 hrs in 2021
Full load = 38,912 litres
Avg. cost of red diesel 58.43 p per L = £ 22,736.28
Cost of off-grid system : £ 72,599.84
Newburn power rental
+
Trans cube(Midas UK) for
Fuel tank
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EXTERNAL COMBUSTION ENGINES
ORGANIC RANKINE CYCLE ENGINE
Tolerant to low quality gas
Long engine life
LCOE – $0.3 /KWh
Cost of engine $155,167 in 2017 from Thailand case study
Potential supplier
ORMAT®
E-Rational ORC
Turboden
STIRLING ENGINE
More robust than internal combustion engines
Generates electricity and heat from lean gas
Modular installation allows expansion
Cleanergy C9G stirling engine, distributed in UK
C9G Model
Even at 12m3 / hr gas – 7.2KW continuously
ROC 2.0 rating
CAPEX - £ 214,000 (ACUMEN 2015)
OPEX - £ 15000/annum
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INTERNAL COMBUSTION ENGINES
(with portable battery banks)
Portable and customizable
Capable of combusting lower methane content LFG - the gas is losing quality - Phase Ⅴ maturation
Capstone (Supplier – NewEnCo) from C30,C65-C1000
CAPEX £100,000 - depends on the number of turbines
OPEX varies between £5,000 and £10,000 per year.
Detailed case studies
Jenbacher
Capstone
13
LFG to RNG Conversion
Pressure swing adsorption
Highest methane generator (90-98%)
Low BTU gas high BTU gas
Cost £ 158,000 - £ 793,000
Investment is quite high, but earnings will help to overcome in future
Lean gas
engines
Recovered methane ---------> Electricity
LFG to RNG Conversion
Altamont landfill, USA
Displaced 2.5 million gallons of diesel
13,000 gallons of LNG per day
Fuels 300 garbage trucks
5 SIMILAR CASE STUDIES
Budget as of 2016,
$7 per million Btu (large scale)
$25 per million Btu (small scale)
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SUSTAINABILITY
CONSIDERATIONS
| SOLUTIONS | ENVIRONMENTAL | ECONOMICAL |
| Methane Oxidation | × Chemicals | Simple systems Less cost |
| Internal Combustion Engines | ↓ Pollution ↓ Space | Less cost Portable |
| External Combustion Engines | × Exhaust gas ↓ C footprints | Runs on low methane level |
| Solar Panels | ↓ Greenhouse gas Replace generator | ↓ operating & maintenance cost |
| LFG to RNG Conversion | Traces hazardous pollutants ↓ C footprints | High Investment ǃǃǃ |
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PERMIT COMPLIANCE
All clauses are examined individually in the toolbox
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PERMIT : EPR/TP3031LV
Management
Operations
Emissions & Monitoring
Information
Energy Efficiency
Disposal of waste
Minimize pollution
Clause 2.7.1
Water, Air, Land
(generator & flare)
Liaising with agency
CONCLUSION
Intense, in-depth research
Project management tools utilized
5 sets of solutions
Case studies analyzed
Permit compliance
Sustainability analysis of 5 proposals
Thank You
