promotion of rain cities for climate change adaptation in … 2010... · delft meeiting 29 november...
TRANSCRIPT
Promotion of Rain Cities for Climate Change Adaptation in a River Basin
Professor Mooyoung Han* & Dr. Chunghyun Park**Director*, Rainwater Research Center, Seoul National University
Chairman, IWA Rainwater Harvesting and Management SGMember **, The National Academy of Science, Korea
Dec 6, 2010
Conference of Global Catchment Initiatives, Bonn, Germany
Delft meeiting 29 November 2007
Delft meeiting 29 November 2007
Delft meeiting 29 November 2007
Delft meeiting 29 November 2007
2010 IWA Project Innovation AwardClimate Change Adaptation
through the promotion of Rain Cities
East Asia Region (June 4, 2010), Shanghai5
Delft meeiting 29 November 2007
Philosophy of Water Management
- From 1D to 4D -
Delft meeiting 29 November 2007
1 Dim
線
1 dimension
Delft meeiting 29 November 2007
Heavy Rain
flooding
Inundation
River Overflow Flooding
Heavy Rain
1 dimensional Water Management
Delft meeiting 29 November 2007
11 Dim2Dim
面
2 dimension
Delft meeiting 29 November 2007
Heavy Rain
Runoff Reduction
Storage Storage and Infiltration
Infiltration
Heavy Rain
For others and for me
2 dimensional Water Management
Delft meeiting 29 November 2007
1차원2차원
3Dim
3 dimension
Delft meeiting 29 November 2007
Rainwater Infiltration
Groundwater Use
For the environment
3 dimensional Water Management
Delft meeiting 29 November 2007
1차원2차원
3차원4 Dim
4 dimension
Delft meeiting 29 November 2007
“For next generation …”
4 dimensional Water Management
Delft meeiting 29 November 2007
2. Multipurpose Rainwater Management
Delft meeiting 29 November 2007
Multi-playerstrategy!
Multi Purpose and Proactive Rainwater Management
Delft meeiting 29 November 2007차 례
Flooding
Drought
Eco-friendly
Fire preventing
Water resources
Water cycle
Public involvement
Energy saving Water supply
law
River law
Countermeasures
against natural disaster
lawMultipurpose rainwater management
Multi purpose
The present of RWH in Korea _ law
Delft meeiting 29 November 2007
3. Example of Decentralized Rainwater Management
Delft meeiting 29 November 2007
Cover Story of Water 21(12. 2008. IWA)
Star City Rainwater managementStar city RWH system
Delft meeiting 29 November 2007
Star City Rainwater management system
Location Jayang-dong Gwangjin-gu Seoul
AreaTotal Area : 62,505.2M2
Building Area : 16,867.729M2
UsageApartment, Officetel,
Commercial & Cultural facilities
Construction
duration
October. 2003 ~ March. 2007
ForFlood
Control ForWaterSaving
ForEmergency
Delft meeiting 29 November 2007
Self Sufficiency in Water
Green Growth
Low Carbon
Climate Change Adaptation
Current
Rain City
Parameters for River Basin Management
Delft meeiting 29 November 2007
Rain city promotion ratio (%)
Self sufficiency ratio in Water (%)
Annual Runoff Reduction (%)
Energy Saving (kwh/year)
Groundwater Recharge (ton/year)
0 0 0 0 0
10 4.66 1.41 98,064 953,400
20 9.33 2.81% 196,128 1,906,800
30 13.99 4.22 294,192 2,860,200
40 18.66 5.63 392256 3,813,600
50 23.32 7.04 490,320 4,767,000
100 46.64 14.1 980,640 9,534,000
Effect of Water Management Parameterswith the promotion of Rain Cities at Woncheon River Basin
Delft meeiting 29 November 2007
IWA Water 21, Dec, 2010
Page 47-49
Delft meeiting 29 November 2007
From Drain CityTo Rain City
Brain CitizensBy Training
Conclusion: Rainwater Revolution
47 Cities in Korea announced Rain City, and more to come rapidly.
Delft meeiting 29 November 2007
Water Independency Ratio
External Supply 89%(Multi-regional water supply)
120 million ton/year
Total water usage :1.09millionXLPCD310LX365days=123millionm3/year // Rainwater : 21.07km2X1335mm=161miilion m3/year
Graywater (3%)Local water supply (3%)
Groundwater (4%)
Rainwater160 million ton/year
• Storage and infiltration • Groundwater recharge andUnderground Dam
• Water Independency Ratio50%
Delft meeiting 29 November 2007
People depending on same water
Korean Philosophy of Rain City
village= +
samewater
Watershed managementDevelopment should be such that the
water system is the same before and after the development