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The Fukuoka MethodSemi-aerobic Landfill Type

10/Feb/2010. Environment Bureau, Fukuoka Municipal Gov.

Landfill Type Anaerobic landfill

Semi-aerobic landfill

Aerobic landfill

t1

Leachate collection pipe

Gas ventingpipe

End of the Pipe is Always Open to the Air

Structure of Semi-aerobic Landfill Type (Fukuoka Method)

Leachate is collected in a leachatecollection pond through perforated pipeembedded in graded boulders.

As the outlet of main leachate collectionpipe is always open to air , fresh air isdown into the layers thereby introducingan aerobic condition around the pipes.

Leachate means the waste water

outlet

Perforated pipe and protection rocks / case example in Samoa

Landfill

Gas Venting Pipe

Aerobic Microbial Degradation

Generatedheat of 50 70

Rain

CO2 CO2 CO2 CO2 CO2 CO2CO2

Function of Semi-aerobic Landfill Type (Fukuoka Method)

Leachate adjustment pond

Treatment Facility

Air

O2 O2 O2O2

Le ac ha te Le ac ha te LeachateLeachate

Leachate

Perforated Leachate Collection Pipe

Through perforated pipes,

1. Leachate is quickly removed,

2. and fresh air is blown into the waste by using convection currentof fermentation heat.

End of the pipealways need to beopen to the air

Change of the water quality (BOD consistency)

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t tashirotakeo, 2010/02/09

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1. Low degree of technical demand and machines anddevices, and ease of operation and maintenance.

2. Decrease in the load of waste watercontamination by the quick drainage of waste water.

Advantages of the Fukuoka Method

3. Contribution to the prevention of Global Warmingby control of the discharge of methane gas

4. Early stabilization of landfill ground by promotingwaste bio-degradation.

5. Wider alternatives of material for construction andlower cost of the construction.

After land use

Since decomposition isfast, the landfill whichusing Fukuoka Methodcan be used for anotherpurpose after landfill inshort period.

Imazu athletic park

School for handicapped children Imazu farming park

Weifang City

/ China

Improvement of landfill in foreign countries

Islamic Republicof Iran

Samoa

Mala sia

Examples of using local materials

Bamboo and waste tire forLeachate collection pipe .

Waste drum for gas venting pipe

China Mexico

Leachate treatment in Samoa

Simplified leachate treatment systemcombined with biological and filteringtreatment has been set.

Improved water after one month operation Aerator Circulation column with trickling filter

Leachate treatment in Samoa

Filter bed using coral tip andcoconut husk activated carbon

Hydrophytes in the compact wetlandabsorb Nitrogen and Phosphorus

Locally available coral tip for filter andporous lava rocks for bacteria bed

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Thank you