Construction and Demolition Waste Management in JAPAN HIDEKO - - PowerPoint PPT Presentation

Construction and Demolition Waste Management in JAPAN

HIDEKO YONETANI Japan Federation of Construction Contractors (KAJIMA Corporation)

Contents

• 1. 3R Activities in the Construction

Industry of Japan

• 2. Demolition Waste Management
• 3. Eradication of Illegal Dumping

• 1. 3R Activities in the Construction

Industry of Japan

Construction Waste Generation

Construction 75.4 million 20% Energy (electricity, gas, heating supply, water supply) 95.58 million 25% Agriculture 84.71 million 22%

Pulp and Paper 29.9 million 8% Steel industry 28.25 million 7% Chemical industry 13.37 million …

Others 54 million 14%

Waste Generation of All Industries in Japan 380 million tons/year

Source: The Ministry of the Environment, 2011

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)

Precut autoclaved Lightweight aerated Concrete (ALC)

Reduce

Non-packaged air-conditioning duct Precast concrete

Construction Waste Treatment

Waste Concrete Waste Asphalt Waste Wood Metal Waste Plastic ALC Electric Wire Cardboard

Recycled Concrete Aggregate (RCA)

Crushing/ Melting

Reclaimed Asphalt Pavement (RAP)

Crushing

Particle Board/ Power Generation

Crushing/ Melting

Recovered Metal

Melting

Cardboard

Melting/ Compression

RPF

Crushing/ Separation

Copper Gypsum Board

Crushing

Recycled/ Landfilled

Mixed Waste

ALC

Gypsum Board Crushing/ Separation Crushing/ Separation Crushing

Recycling by Treatment Operators

Recovered copper of electric wires Particleboard made of waste wood RPF derived from waste plastic containers Recycled concrete aggregates

Recycling by Manufacturers

Gypsum board ALC Glass wool

On-site Waste Sorting

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.

Reduction of Mixed Wastes

Mixed waste generation per total floor area(kg/m2)

Source: Japan Federation of Construction Contractors (JFCC), 2011

Images of Sorting Effect

Small-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

２．Demolition Waste Management

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

• f hazardous materials.

Reference Materials for Hazardous Wastes

Published by the Ministry of Land, Infrastructure and Transport and Tourism (MLIT)

“Appropriate Handling of Hazardous Materials in Demolition”)

Reference Materials for Asbestos

Published by the Ministry of Land, Infrastructure and Transport and Tourism (MLIT)

“Seeing Asbestos with Your Own Eyes”)

Checklist for Assessment

３．For Eradication of Illegal Dumping

Around Illegal Dumping Site

・More than 800 thousand ㎥ of wastes were dumped

• n a mountain by a treatment operator over 10 years.

・10 billion yen was used for restoration and recovery

• f the site but only a part of waste has been removed.

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

• perators and examines their capabilities of

waste treatment.

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

Thank you very much for your kind attention.