This is the finding report that our team created for the Kadena USAF Air Base, Okinawa, Japan; Waste To Energy Feasibility Study. It looked at three different technologies: Incineration, Plasma Gasification, and Anaerobic Digestion. Lots of good information, and more backup can be found in the report.
Provided technical input, peer review, environmental, and project oversight for a feasibility study to evaluate incineration, plasma gasification, and anaerobic digestion as waste to energy technologies on the island of Okinawa, Japan. Each technology was evaluated for technical feasibility with the current waste stream at KAB, potential energy generation and uses, cost and payback, and potential environmental issues.
Based on this evaluation, a Waste-to-Energy Feasibility Assessment Report was prepared for KAB. This report discusses the feasibility of each of these waste-to-energy technologies, evaluates environmental permitting issues for each technology, recommends uses for generated energy (electricity, steam, etc.), and discusses life cycle costs and payback. Recommendations were made regarding the preferred waste-to-energy technology for implementation at KAB.
Kadena USAF Air Base, Okinawa, Japan; Waste To Energy Feasibility Study
1. Summary Presentation for
Waste to Energy Feasibility at Kadena
Air Base, Okinawa, Japan
Contract No. FA8903-08-D-8766-0048
www.amec.com
2. 2
Discussion Topics
Requirements of the Statement of Work
AMEC’s Recommendations
Technologies Investigated
Advantages and Disadvantages
Cost Impacts
Steps moving forward
Q&A
3. 3
Requirements from the Statement of Work
Site Visit
Determine what could be found
Talk to shareholders
Find sites to be used for future development
Draft and Final Reports
Compare technologies to constraints provided by the site visit
First Glance into the economics of the process and the system
Recommendations for moving forward
This Presentation
Summarize the findings of the report
Engage in conversation about what the results mean
Determine if recommendations should be pursued.
4. 4
AMEC’s Recommendations
Technology: Plasma Gasification
Timeline : Within three years (2013)
Location: To be determined by design (current recommendation is the
Chibana Area)
Fluctuating Cost Factors:
Cost to dispose
Need for freshwater
Volume to dispose
Need for Hazardous Waste Disposal
Need for additional cooling
Approximate Capital Cost : ~ $50M USD (4.62B yen)
Approximate Cost to Break-Even (@15,000 MT MSWA) : ~$450/MT
5. 5
AMEC Recommendations (cont.)
Cost to dispose
Current Price: $300/MT
Current Local Civilian Price: $850/MT
Renegotiation of MSW contract in 2013
Need for freshwater
Desalinization not pursued at this time
Typhoon Event – Water Loss – Bottled Water alternative - $25k per day.
Disposal Volume
Including Local Civilian Population
Including Sister Services
Can waste be “recycled” into energy?
Need for Hazardous Waste Disposal
Current method includes shipping to Kansas
Need for additional cooling
Depending on services and new construction due to USMC movement
6. 6
Technologies Investigated
Incineration
Burning material
High Energy Output, Medium Byproduct Output
Medium feedstock availability
Currently underway in two locations on island (not waste to energy)
Bio-digestion
Wastewater treatment option
Medium Net Energy Output, Highest Byproduct Output
Limited feedstock availability
Plasma Gasification
Heating waste to plasma temperatures, creating synthetic gases
High Energy Output, Lowest Byproduct Output
Highest Feedstock Availability
11. 11
Advantages and Disadvantages
Incineration
Pros:
– Greatly reduces MSW volume
– Requires recycling
– High Energy Output
– Cheap and easy technology
– Can produce desalinized water and steam for chillers
– Lower Capital Cost
Cons:
– It is currently being done by others on the island (competition)
– Adverse impacts to the environment (but can be mitigated for a cost)
– Cannot reduce all waste streams
12. 12
Advantages and Disadvantages
Plasma Gasification
Pros:
– Greatly reduces MSW volume
– Compliments recycling
– High Energy Output
– Environmentally friendlier (still needs some controls)
– Can reduce all waste streams
Cons:
– Higher Capital Cost
– Higher Annual Costs
– Complicated technology
17. 17
Steps moving forward
AMEC recommends
Development of 35-100% Design
Evaluation of MSW price increase likelihood
Re-evaluation of desalinization and increased cooling load needs
Evaluation of Civilian and Sister Services cooperation to increase economies of
scale
AMEC also noted that the 18th
CEG could benefit from:
Base wide Energy and Water Conservation
Net-Zero Energy Study
– Solar PV, Solar Water Heating, Wind Power, Ocean Power
LEED applicability
Relocation design of USMC assets with vision towards energy efficiency
Technology reviews for applicability, especially with operations and maintenance
Third Party Financing Assistance
Consolidated Back-Up Power and Diesel Pumps
18. 18
Shitsumon to kaitō (Questions and Answers)
Has AMEC fulfilled your needs?
Was AMEC enjoyable/effective to work with?
Are their other items you would like to discuss within this scope?
Are their items you would like to discuss outside this scope?