Construction Waste Treatment in JAPAN...Construction Waste Generation Construction 75.4 million 20%...
Transcript of Construction Waste Treatment in JAPAN...Construction Waste Generation Construction 75.4 million 20%...
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Construction and Demolition Waste Management in JAPAN
HIDEKO YONETANI
Japan Federation of Construction Contractors
(KAJIMA Corporation)
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Contents
1. 3R Activities in the Construction Industry of Japan
2. Demolition Waste Management
3. Eradication of Illegal Dumping
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1. 3R Activities in the Construction Industry of Japan
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Construction Waste Generation
Construction75.4 million 20%
Energy(electricity, gas, heating
supply, water supply)95.58 million 25%
Agriculture84.71 million
22%
Pulp and Paper 29.9 million 8%
Steel industry28.25 million 7%
Chemical industry
13.37 million …Others
54 million 14%
Waste Generation of All Industries in Japan380 million tons/year
Source: The Ministry of the Environment, 2011
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Recycling Rate
Source : Census of Construction waste, 2012
99%
99%
69%
57%
89%
84%
0%
0%
16%
1%
5%
7%
1%
1%
15%
42%
6%
9%
Waste concrete
(3,092t)
Waste asphalt
(2,577t)
Sludge
(657t)
Mixed waste
(80t)
Waste wood chips
(500t)
Others
(164t)
Recycling rate Reduction rate Final disposal rate
Item(Total generation)
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Precut autoclavedLightweight aerated Concrete (ALC)
Reduce
Non-packaged air-conditioning duct
Precast concrete
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Construction Waste TreatmentWaste Concrete
Waste Asphalt
Waste Wood
Metal
Waste Plastic
ALC
Electric Wire
Cardboard
Recycled Concrete Aggregate (RCA)
Crushing/Melting
Reclaimed Asphalt Pavement (RAP)
CrushingParticle Board/
Power Generation
Crushing/Melting Recovered Metal
Melting Cardboard
Melting/Compression RPF
Crushing/Separation Copper
Gypsum Board
Crushing
Recycled/Landfilled
Mixed Waste
ALC
Gypsum BoardCrushing/Separation
Crushing/Separation
Crushing
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Recycling by Treatment Operators
Recovered copper of electric wires
Particleboard made of waste wood
RPF derived from waste plastic containers
Recycled concrete aggregates
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Recycling by Manufacturers
Gypsum board ALC
Glass wool
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On-site Waste Sorting
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Mixed Waste Processing
・Mixed waste is separated manually and mechanically at the waste processing facility into recyclable/non-recyclable waste.・Non-recyclable waste is to be disposed in landfills.
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Reduction of Mixed Wastes
Mixed waste generation per total floor area(kg/m2)
Source: Japan Federation of Construction Contractors (JFCC), 2011
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Images of Sorting EffectSmall-Scale Site (10,000m2 or below) Large-Scale Site (50,000m2 and over)
Cost (\/m2) Cost (\/m2)
Mixed waste (kg/m2) Mixed waste (kg/m2)
100%
70%
100%
62%
100%
25%10%
100%10 categories 18 categories
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2.Demolition Waste Management
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Hazardous Materials from Demolition
・Asbestos-containing materials
・PCB containing equipment
・Freon containing appliances
・Mercury in fluorescent lamps etc.
Assessment is essential for
determination and proper treatment
of hazardous materials.
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Reference Materials for Hazardous Wastes
Published by the Ministry of Land, Infrastructure and Transport and Tourism (MLIT)
“Appropriate Handling of Hazardous Materials in Demolition”)
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Reference Materials for Asbestos
Published by the Ministry of Land, Infrastructure and Transport and Tourism (MLIT)
“Seeing Asbestos with Your Own Eyes”)
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Checklist for Assessment
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3.For Eradication of Illegal Dumping
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Around Illegal Dumping Site
・More than 800 thousand ㎥ of wastes were dumped on a mountain by a treatment operator over 10 years.
・10 billion yen was used for restoration and recovery of the site but only a part of waste has been removed.
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Waste Management in Kajima
Reinforced management on selection of the treatment operators (intermediate treatment and final disposal);
・The operators must be limited to the qualified operators that the management division has approved.
・The management division of each branch visits the facilities of the prospective operators and examines their capabilities of waste treatment.
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① Select trustworthy operator to commission waste management
② Pay appropriate waste processing costs
③ Take strong measures against hazardous demolition and renovation waste
④ Control and reduce waste generation
⑤ Sort the waste and maximize recycling
Responsibilities of Waste Generator
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Thank you very much foryour kind attention.