Climate Change Seminar - EECC-AIT · 1. More than 100 WTE plants under operation 2. Target to treat...
Transcript of Climate Change Seminar - EECC-AIT · 1. More than 100 WTE plants under operation 2. Target to treat...
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Climate Change Seminar
BINDU N. LOHANI
A I T
JANUARY 2 019
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Mitigation from Waste ManagementThree topics:
1. Contribution of Waste Sector to GHGs
2. Waste to Energy Projects: What and Why?
3. 3R and Circular Economy
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Waste and Climate Change….some facts1. Post consumer waste: a small contribution to global GHGs emission (<5%)
2. 1,300 million tones of CO2 equivalent in 2005 (small in percent, significant in absolute number)
3. Waste related GHGs:
-Landfill Methane
-Nitrous Oxide
-Carbon dioxide from incineration of waste containing fossil carbon
Importance of waste sector in reducing global GHG emission has been underestimated
-Waste management decision often made locally without quantification of GHG mitigation
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Global GHG emission
Waste and wastewater
2.8%
Energy supply 25.9%
Transport 13.1%
Residential and commercial
buildings 7.9%
Industry 19.4%
Agriculture 13.5%
Forestry 17.4%
Source: Bogner et al, Working Group III, 4th Assessment Report, IPCC
• Contribution of WasteSector looks small incomparison to othersectors but still hassignificance from climatechange perspective aswell as wastemanagement (wastedisposal, 3R, CircularEconomy )
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Global GHG emission
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MSW Technologies and GHG
SOLID WASTE(post consumer)
Waste prevention and minimization
Waste collection
LandfillingIncineration and
other thermal processes
Anaerobic digestion
Mechanical Biological Treatment
Residual Landfilling
Composting of waste fraction
Waste diversion through recycle
and reuse
LOW/ INTERMIDIATE TECHNOLOGY COST OPTION HIGH COST TEDDCHNOLOGY
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Regional GHGs Trends (Incineration)Incineration and other thermal process emit GHGs
Developed Countries Developing Countries
Japan (70% of waste incinerated) Incineration rare – high capital and operating cost
Germany , Scandinavian countries far ahead Uncontrolled burning of waste for volume reduction is common
????
NoteIncineration trades and emission higher in Developed Countries
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FOOD WASTE1. Energy from Food
2. Food contains energy in the form of “Carbohydrate” – Carbon, Hydrogen and Oxygen
3. Food Wastes (Impacts on CO2)
-Carbon dioxide (CO2)
-Methane (CH4)
1. Recycling and Reuse
-Composting (organic waste)
-Recycling paper, plastics, metals
-Helps reduce GHGs and methane
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Municipal Waste Management 1. Waste to Energy (W2E)
2. Any waste treatment that produces energy or heat from Waste
3. Waste Pathways
4. Incineration and Landfill to Gas
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Disposal Options: Why W2E is attractive?1. Renewable energy source
2. Environmental regulations
3. Investment subsidies
4. Waste disposal and landfill gate fees
5. Diminishing landfill capacity
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W2E ExamplesEurope
1. W2E has become a preferred method of waste disposal
2. Germany, Scandinavian Countries, (Norway is a leader) are in the forefront
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WTE ExamplesChina
1. More than 100 WTE plants under operation
2. Target to treat 100% of Municipal Solid Waste (MSW) in large municipalities (larger than provincial capitals cities)
3. 90% in smaller cities (in Five year plan)
4. China 4th largest in the world in W2E after the EU, Japan and the US
5. China is the 2nd largest in terms of generation of solid waste, 220 million tones annually
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One W2E Project in China (name withheld)
Some silent features;
1. Total capacity up to 6,300 tones MSW/day
2. Plant generates 610 gigawatts of electricity annually by 2018
3. Financing $454m equivalent in Yuan
4. Exclusive right to operate WTE and agreement that guarantees a minimum of MSW supply
5. EIRR is higher than the weighted cost of capital and economically visible
6. EIRR is higher than the social discount rate of 12%
7. FIRR acceptable
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Another W2E ProjectLocated in PR China
Treats a daily average of 1,200tons of MSW in 2008
Incineration (CDM) Project burning 1,200 tones of waste per day (CDM registration in 2010)
Estimated GHGs emission reduction is about 9,500 tCO2
Project Type
-Thermal treatment of MSW
-Technology (transferred from Japan) each unit of 400 tones of MSW/day
-Steam turbine installed for producing electricity and generate about 117,000 Mwh using 400,000 tones of MSW
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WTE Projects (Thailand/selected)MSW Incineration – Samaui Island, Surat Thani
MSW Incineration – Phuket Island
Kamphaeng Saen Landfill (LFG)
Rechethewe Landfill (LFG)
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Landfill Closure Project (India)Close the dumping site
Install a methane capture as Clean Development Mechanism (CDM) Project to reduce GHGs
Project successfully registered, estimated Co2 savings up to 2012 was about 604,000 tCO2e
Power generation and gas flaring for generating electricity (3 engines of 1Mw each )
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Circular Economy
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3R……. Reduce ….choosing to use things to reduce the amount of waste generated
Reuse ….repeated use of things so as to prevent them from being called waste
Recycle ….systematic use of the waste itself as a raw material
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Thank You !!!