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(1)

Reuse, Reduction and Recycle of Construction and Demolition Waste Construction and Demolition Waste

(2)

My Presentation

• What is Construction and Demolition Waste

• Challenges

• Management Strategy

• Management Strategy

• Reduce

• Reuse

• Recycle

• Recommendation

(3)

My Presentation

What is Construction and Demolition Waste

• Challenges

• Management Strategy

• Management Strategy

• Reduce

• Reuse

• Recycle

• Recommendation

(4)

What is Construction Waste What is Construction Waste

Site Clearance Site Clearance

Tunneling Tunneling Demolition

Demolition Excavation Excavation

(5)

N

Nonon--inert (16%)inert (16%)

Soft

Soft Hard Hard

Inert (84%) Inert (84%)

Construction Waste Construction Waste

Soft Soft

(Sand, Clay (Sand, Clay) )

(59%) (59%)

Hard Hard

(rock, crushed concrete, brick, tiles (rock, crushed concrete, brick, tiles) )

(25%) (25%)

Recyclable Recyclable

((rock, crushed concreterock, crushed concrete) ) (20%)

(20%)

Non

Non--recyclable recyclable

(Brick, tiles (Brick, tiles))

(5%) (5%)

(6)

CHALLENGES

CHALLENGES

(7)

19.1 15.0

20.0 25.0

Quantity (million tonne)

Annual Generation of Construction Waste in Hong Kong

Public Fill C&D Waste

4.2

5.7 5.2

2.7 2.4 2.5 2.8 2.7 2.3 3.7

3.11 2.4 2.4

1.5 1.1 1.0 1.1 4.0

3.0 6.5

8.3 8.0 9.3

10.7 11.1 11.9 12.7

17.2 18.1 19.1

9.4 7.2

9.2

14.3

0.0 5.0 10.0

1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Quantity (million tonne)

Year

(8)

Inert Construction Waste Inert Construction Waste

6 to 7 Million Tonnes/Year + 6 to 7 Million Tonnes/Year +

Mega Infrastructural Projects to

2016

(9)

Tuen Mun Fill Bank

Tseung Kwan O Fill Bank

(10)
(11)

Reasons Leading to Current Situation

• Low cost in exploiting natural resources

• Low cost of aggregates from Mainland

• Site redevelopment after relocation of airport

airport

• Fast redevelopment of site for quick financial return

• Inherited bad “use and throw away” habit

• Poor waste management concept

• No reclamation project under planning

(12)

Total reclaimed area 6824ha 香港填海面積 – 6824 公頃

Approx. extent of previous

reclamation 過去填海過去填海過去填海 過去填海大概大概大概大概 範圍範圍範圍

範圍 Legend 說明說明說明說明

6824

27% of population 27%的人口

70% of office floor area

70%的總辦公室樓面面積

New towns, e.g. Shatin, TKO 新市鎮例如沙田、將軍澳

(13)
(14)

Urgency to Handle Surplus Public Fill:

處理建築填料的迫切性 處理建築填料的迫切性 處理建築填料的迫切性 處理建築填料的迫切性: : : :

Land development (from rezoning, resumption and redevelopment) also generates Public Fill

土地發展(從更改用途,收地及重建)也會產 生建築填料

Public Fill 建築填料 建築填料 建築填料 建築填料

Despite successful implementation of “Reduce, Reuse and Recycle” in the past few years,

construction activities still generate about 6 to 7 million tonnes surplus public fill each year

儘管在過去幾年成功實施「減少、重用和

回收」建築填料,每年建造業仍然產生剩

餘建築填料約600萬至700萬公噸

(15)

My Presentation

• What is Construction and Demolition Waste

• Challenges

Management Strategy

Management Strategy

• Reduce

• Reuse

• Recycle

• Recommendation

(16)

Management Strategy

(17)

Management Strategy

• Reduce the generation of construction waste

• Maximise reuse and

• Maximise reuse and recycling

• Reduce intake of mixed

waste at landfills

(18)

My Presentation

• What is Construction and Demolition Waste

• Challenges

Management Strategy

Management Strategy

Reduce

• Reuse

• Recycle

• Recommendation

(19)

Reduce

• C&D Management Plan and

Waste Management Plan

(20)

Reduce

• Low Waste Construction Designs and Technologies

Lean Construction

Balanced Cut and Fill

Modular Construction

Reuse of Construction Waste

(21)

Reduce

• Raw Materials Management

(22)

Reduce

• Waste Management Charging Scheme

Government Waste Disposal Facilities

Type of Construction Waste Accepted

Charge per tonne Public fill reception

facilities#

Consisting entirely of inert construction waste

$27

Sorting facilities# Containing more than 50%

by weight of inert construction waste

$100

Landfills@ Containing not more than 50% by weight of inert

construction waste

$125

Outlying Islands Transfer Facilities@

Containing any percentage of inert construction waste

$125

# operated by CEDD @ operated by EPD

(23)

19.1 15.0

20.0 25.0

Quantity (million tonne)

Annual Generation of Construction Waste in Hong Kong

Public Fill C&D Waste

4.2

5.7 5.2

2.7 2.4 2.5 2.8 2.7 2.3 3.7

3.11 2.4 2.4

1.5 1.1 1.0 1.1 4.0

3.0 6.5

8.3 8.0 9.3

10.7 11.1 11.9 12.7

17.2 18.1 19.1

9.4 7.2

9.2

14.3

0.0 5.0 10.0

1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Quantity (million tonne)

Year

(24)

My Presentation

• What is Construction and Demolition Waste

• Challenges

Management Strategy

Management Strategy

• Reduce

Reuse

• Recycle

• Recommendation

(25)

Reuse

(26)

Reuse

• Reclamation in Hong Kong

(27)

Reuse

• Reclamation in Mainland

Guang Hai Wan, Taishan

Fill Bank in Hong Kong

Guang Hai Wan, Taishan

(28)

Public Fill 建築填料 建築填料 建築填料 建築填料

Delivery to the Mainland for Reuse 運往內地重用 運往內地重用 運往內地重用 運往內地重用

170 km away from HK, 22 hours Round trip 離香港

離香港離香港170 公里離香港 公里公里公里,,,, 來回來回來回來回22 小時小時小時小時

65 nos. vessels per day 每日

每日每日每日65 艘遠洋船運送艘遠洋船運送艘遠洋船運送艘遠洋船運送

Consume19,000 litres more diesel per day 每日

每日每日每日消耗額外消耗額外消耗額外11119,000公升消耗額外 公升公升公升柴油柴油柴油柴油

Extra 50 tonnes carbon emission per day 每日

每日每日每日碳排放量碳排放量碳排放量增加碳排放量增加增加增加50公噸公噸公噸公噸

Cost $27 per tonnes more than local reclamation 比本地填海每公噸多

比本地填海每公噸多比本地填海每公噸多比本地填海每公噸多$27

Hong Kong Hong Kong

香港香港香港 香港

Taishan

台山台山 台山台山

(29)

My Presentation

• What is Construction and Demolition Waste

• Challenges

Management Strategy

Management Strategy

• Reduce

• Reuse

Recycle

• Recommendation

(30)

Recycle

• Selective Demolition

(31)

• Proper Sorting

(32)

Temporary C&D Materials Recycling Temporary C&D Materials Recycling Temporary C&D Materials Recycling Temporary C&D Materials Recycling Temporary C&D Materials Recycling Temporary C&D Materials Recycling Temporary C&D Materials Recycling Temporary C&D Materials Recycling

Facility in Facility in Facility in Facility in Facility in Facility in Facility in

Facility in TuenTuenTuenTuenTuen MunTuenTuenTuen MunMunMunMunMunMunMun Area 38Area 38Area 38Area 38Area 38Area 38Area 38Area 38

Preliminary Sorting

Primary Crushing Secondary Crushing Stockpiles Impurity Removal Facilities

(33)

Recycled Products Recycled Products

Private Construction Waste Recycling Facility Private Construction Waste Recycling Facility

in Hong Kong in Hong Kong

Primary Crushing

Primary Crushing SSecondaryecondary CrushingCrushing Sieving into different sizesSieving into different sizes

(34)
(35)

Problems in Promoting Use of Problems in Promoting Use of Problems in Promoting Use of Problems in Promoting Use of Problems in Promoting Use of Problems in Promoting Use of Problems in Promoting Use of Problems in Promoting Use of

Recycled Aggregates Recycled Aggregates Recycled Aggregates Recycled Aggregates Recycled Aggregates Recycled Aggregates Recycled Aggregates Recycled Aggregates

Lack of confidence - view as inferior materials

Lack of local experience

Uncertainty in quality

Appropriate specifications still under development

Imported natural aggregate is cheaper

Over-specifying

Not catered in planning and design stages

Unsteady in supply

Appropriate specifications still under development

(36)

My Presentation

• What is Construction and Demolition Waste

• Challenges

• Management Strategy

• Management Strategy

• Reduce

• Reuse

• Recycle

Recommendation

(37)

Recommendations Recommendations

 Promotion activities to the industry

 Incentive to the market to encourage the use of recycled aggregates

the use of recycled aggregates

 Arrange demonstration projects

 More supply points (recycled plants) of recycled aggregates

(38)

Thank You

Thank You !!

Thank You

Thank You !!

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