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SENES Consultants Limited Waste to Energy Opportunities and Challenges Ganga River Basin Management Plan Stakeholders Meeting IIT Delhi 23 September 2011.

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Presentation on theme: "SENES Consultants Limited Waste to Energy Opportunities and Challenges Ganga River Basin Management Plan Stakeholders Meeting IIT Delhi 23 September 2011."— Presentation transcript:

1 SENES Consultants Limited Waste to Energy Opportunities and Challenges Ganga River Basin Management Plan Stakeholders Meeting IIT Delhi 23 September 2011 Murali Ganapathy Waste Management and Climate Change Group

2 SENES Consultants Limited Agenda  Waste to Energy: Basics  Advantages  Technologies  PPP Opportunities  Challenges

3 SENES Consultants Limited Agenda  Waste to Energy: Basics  Advantages  Technologies  Opportunities  Challenges

4 SENES Consultants Limited Waste to Energy: Basics  WTE is one type of waste management technique  Most suitable for organic waste – solid and liquid containing high organics capable of decomposition  Solid waste can be:  MSW / garbage  Industrial waste  Processing waste  Waste is converted to energy: electricity, steam, gaseous fuels

5 SENES Consultants Limited Agenda  Waste to Energy: Basics  Advantages  Technologies  Opportunities  Challenges

6 SENES Consultants Limited Waste to Energy: Advantages  Volume and mass reduction: 60% to 90%  Land demand for land filling is reduced  Savings in overall waste transportation costs  Potential for pollution mitigation  Resource utilization: power, compost, organic fertilizer, gaseous fuels (syngas, H 2, biogas)  Carbon emission reduction

7 SENES Consultants Limited Agenda  Waste to Energy: Basics  Advantages  Technologies  Opportunities  Challenges

8 SENES Consultants Limited Waste to Energy: Technologies  Combustion  Incineration/Mass Burn  RDF combustion  Gasification/Pyrolysis  Fluidized bed gasification  Plasma gasification  Anaerobic digestion  Controlled biomethanation for organics  Landfill gas capture

9 SENES Consultants Limited Incineration

10 Incineration  Common commercial technology for waste management in developed countries.  Over 4 lakh TPD of waste is being incinerated in about 600 plants in 35 countries.  Estimated to be generating 10,000 MW power.  Tried in Timarpur, Delhi – didn’t work due to high moisture/low calorific value of MSW

11 SENES Consultants Limited RDF

12 RDF  Recovery of combustible particles from MSW through segregation, drying and shredding.  Refuse Derived Fuel (RDF): fuel for Cement Kilns or can be combusted for generation of Power.  Need for pollution control equipment required to control emissions.

13 SENES Consultants Limited Gasification

14 Gasification  Partial combustion in absence or restricted supply of air/O 2 to form combustible gases  Combustible gases used for heat directly or for motive power/electricity through gas engines  Promising and environmentally clean thermo-chemical process

15 SENES Consultants Limited Plasma Gasification

16 SENES Consultants Limited Plasma Gasification  Less polluting than combustion/incineration  No SOX/NOX issues (no O 2 )  Toxic materials encapsulated: much safer to handle  Highest efficiency of conversion  High Costs and still in commercial demo stage

17 SENES Consultants Limited Anaerobic Digestion

18 SENES Consultants Limited Anaerobic Digestion  Biogas from biodegradable fraction of waste for fuel/power and organic manure  Environmentally benign for segregated uniform solid or liquid wastes  Many successful Indian applications (mostly small scale)  Capital cost – financially competitive

19 SENES Consultants Limited Landfill Gas Capture

20 SENES Consultants Limited Landfill Gas Capture u Anaerobic decomposition of waste in landfills produces landfill gas ( % CH4) u Landfill Gas can be captured, purified and utilized for power generation

21 SENES Consultants Limited Project Experience  Plasco Energy – Waste to energy using plasma gasification;  Anaerobic digestion of wastewater sludge and MSW organic components at Cancun, Mexico;  Wastewater sludge and organic MSW at Campeche, Mexico;  LFG at Puebla, Mexico and for GAIL at Delhi Ghazipur landfill.  Waste gasification PPP proposed at Maldives;  DBO at Belize for MSW; DBO at Guyana for Industrial waste  Advantages  Technologies  Opportunities  Challenges

22 SENES Consultants Limited Agenda  Waste to Energy: Basics  Advantages  Technologies  Opportunities  Challenges

23 SENES Consultants Limited Waste to Energy: Opportunities in GRBMP  Anaerobic digestion of wastewater, organics (municipal waste, processing plants);  RDF of waste is also an option;

24 SENES Consultants Limited Agenda  Waste to Energy: Basics  Advantages  Technologies  Opportunities  Challenges

25 SENES Consultants Limited Waste to Energy: Challenges  Management of waste streams is difficult.  Industrial discharge need to be controlled.  Garbage disposal by public is an issue.  Educating public and private sector is key.  Need to assess capacity of ULB’s to manage and pay for the infrastructure or operations.

26 SENES Consultants Limited Thank You


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