Waste-to-energy isn’t just a trash disposal method. It’s a way to recover valuable resources. Waste-to-energy is a vital part of a sustainable waste management chain and is fully complementary to recycling. Today, it is possible to reuse 90% of the metals contained in the bottom ash. And the remaining clinker can be reused as road material.

2. TABLE OF CONTENTS
• MSW
• Waste management in Bangladesh.
• Our Focus
• Electricity from Waste
• System overview.
• Future opportunity

3. MSW
•Municipal solid waste (MSW), commonly known as trash or garbage.

4. MSW
•If it continues we will find dumping yards every where other than houses.

5. Here’s the Good news.
•There is a remedy through which we can prevent that situation and at the same
time we can save our money too.
•The remedy for that situation is reusing the wastes through
•which we can make use of those wastes and thus we can be a part of making this
world clean.

6. Waste Management In Bangladesh
• According to an UNFPA report, Dhaka is one of the most polluted cities in the world and
one of the issues concerned is the management of municipal waste.[2]
•Current (2012) waste generation in Bangladesh is around 22.4 million tonnes per
year or 150 kg/cap/year.[8] There is an increasing rate of waste generation in
Bangladesh and it is projected to reach 47, 064 tonnes per day by 2025.[8] The
rate of waste generation is expected to increase to 220 kg/cap/year in 2025. A
significant percentage of the population has zero access to proper waste disposal
services, which will in effect lead to the problem of waste mismanagement.[2]

7. Waste Management In Bangladesh
•The total waste collection rate in major cities of Bangladesh such as Dhaka is
only 37%. When waste is not properly collected, it will be illegally disposed of
and this will pose serious environmental and health hazards to
the Bangladeshis.[4]
•There have been recent developments in Bangladesh to improve waste
management, especially in urban cities. In Dhaka, Dhaka City Corporation with
support from the Japan International Corporation Agency (JICA) has a master
plan underway to better handle the solid waste management in Dhaka.

8. OUR FOCUS
•Especially in our country we find a lot of power cuts during summer season ,
because of insufficient power production.
•We will also observe always there is a rise in the cost of electricity.
•By using the modern technique of reusing of wastes, we can even produce
electricity.
•By these methods we can produce fuel ,which is eco friendly I,e, there would be
no harm to environment.

9. OUR GOAL
• Turn this waste into useful electric
power.

10. ELECTRICITY FROM WASTE
• Waste to energy power plant.

11. POWER PLANT WORKING PRINCIPLE
•Essentially, these plants burn MSW to power steam
turbines.
•These turbines send electricity to the power grid.
•The products of this burning process are water vapor
and harmless ash that is used for aggregate and
metals.
•The rest of this ash is disposed in landfills but takes
up 90% less space than MSW

12. POWER PLANT WORKING PRINCIPLE
•Electricity can be produced from waste through direct combustion, and the
released heat is utilized to produce steam to drive a turbine. This indirect
generation has an efficiency level of about 15% to 27%, with modern plants
reaching the higher end of the range. The electrical efficiency rate from
incineration is usually higher than from gasification due to lower operating
temperatures, steam pressure and overall energy required to run the plant.

13. POWER PLANT WORKING PRINCIPLE
•Energy recovery from waste is the
conversion of non-recyclable waste
materials into usable heat, electricity, or
fuel through a variety of processes,
including combustion, gasification,
polarization, anaerobic digestion and
landfill gas recovery. This process is
often called waste to energy.

14. MATERIAL PROCESS
•Waste material is received in an enclosed
receiving area, where it is more thoroughly
mixed in preparation for combustion.
Negative airflow will carry dust and odor
into the combustion chamber from the
receiving area, along with the waste to
eliminate its spread outside the facility.

15. MONITOR AND CONTROL
•The air stream rising to the stack is continuously
monitored to ensure compliance with air quality
standards. The entire process can be controlled to
optimize efficiency in the combustion, heat and
steam generation, electrical energy, and
environmental control processes.

16. EFFICIENT COMBUSTION
•Mixed waste enters the combustion chamber on
a timed moving grate, which turns it over
repeatedly to keep it exposed and burning—the
way turning over or poking a fireplace log
brightens the fire. A measured injection of
oxygen and fumes drawn from the receiving
area makes for a more complete burn.

17. STEAM POWER GENERATION
•Highly efficient superheated steam powers the steam turbine generator. The
cooling steam is cycled back into water through the condenser or diverted as a
heat source for buildings or desalinization plants. Cooled stream is reheated in
the economizer and superheater to complete the steam cycle.

18. ELECTRIC POWER AND HEAT
•A 1,000 ton-per-day WTE plant produces enough electricity for 15,000
households. Each ton of waste can power a household for a month. If combined
with a cogeneration plant design, WTE plants can, while producing electricity,
also supply heat for nearby businesses, desalination plants and other purposes.

19. COST
•The typical plant with capacity of 400GWh energy production annually costs
about 440 million dollars to build.
•Cost also depending on land of plant, Transportation etc.

20. HAPPY TALKING !!!
• Waste-to-energy isn’t just a trash disposal method. It’s a way to recover valuable resources.
Waste-to-energy is a vital part of a sustainable waste management chain and is fully
complementary to recycling. Today, it is possible to reuse 90% of the metals contained in the
bottom ash. And the remaining clinker can be reused as road material.

21. FUTURE OPPORTUNITY
• Proper use of waste
• Clean Environment
• Economical issue
• Material

22. REFERENCE
1. ENERGYRECOVERYCOUNCIL.ORG. WEB. NOVEMBER 1, 2016.
2. HODGE, B. K. ALTERNATIVE ENERGY SYSTEMS AND APPLICATIONS. HOBOKEN: JOHN WILEY & SONS, INC., 2010. PRINT.
3. MEMPHISTN.GOV. WEB. NOVEMBER 1, 2016.
4. POWERGEN.GEPOWER.COM. WEB. NOVEMBER 1, 2016.
5. WTE.ORG. WEB. NOVEMBER 1, 2016.
6. "MEMPHIS LIGHT, GAS AND WATER - COMMERCIAL", MLGW.COM, 2016. [ONLINE]. AVAILABLE:
HTTP://WWW.MLGW.COM/COMMERCIAL/COMMERCIALRATES. [ACCESSED: 29- NOV- 2016].
7. "WASTE-TO-ENERGY (MUNICIPAL SOLID WASTE) - ENERGY EXPLAINED, YOUR GUIDE TOUNDERSTANDING ENERGY -
ENERGY INFORMATION ADMINISTRATION", EIA.GOV, 2016. [ONLINE]. AVAILABLE:
HTTP://WWW.EIA.GOV/ENERGYEXPLAINED/INDEX.CFM/DATA/INDEX.CFM?PAGE=BIOMAS S_WASTE_TO_ENERGY.
[ACCESSED: 29- NOV- 2016].
8. "WASTE CONCERN, DEPARTMENT OF ENVIRONMENT. (2004). COUNTRY PAPER BANGLADESH"

23. PRESENTED BY
• Md. Aseer Awsaf
https://www.linkedin.com/in/aseerawsaf/