Taiwan - Taichung Municipal Hui-Wen High School

1. Water Crisis Under Climate Change
Ting Jui Tang & Szu Yu Lin & Yu Tung Chang
Taichung Municipal Hui-Wen High School
Countermeasures in Taiwan

2. Climate Change in Taiwan
• Extreme Weather :
• Temperature → the average temperature rose by 1.6°C every ten years
• Uneven rainfall intensity → Drought and Flood
(Taiwan Adaptation Platform, TAP)
image source: Green Peace
image source : TVBS
Water Situation
Normal
Reducing
Volume of
Water Supply
Reducing
Water Pressure
Preparedness
Rolling Water
Supply
2021.05.21
source : Water Resources Agency
Taichung
New Taipei
Kaohsiung

3. average annual rainfall: 3016mm
Rainfall Comparison
Source : Water Resources Agency
average annual rainfall: 2073 mm
average annual rainfall: 1837mm
Taichung
New Taipei
Kaohsiung
Feb Apr Aug
Jun Oct Dec
33550.5 million m³
Feb Apr Aug
Jun Oct Dec
18866.34 million m³
▇ 2013 ▇ 2021
Feb Apr Jun Oct Dec
Aug
1519.81 million m³
Reservoir
Techi
Feitsui
Agongdian
Groundwater

4. ● Land subsidence
● Soil liquefaction
● Well water conservation
● Stable water volume
● Clean
● Have to decentralize
access
● Simple scale
● Short duration
● Less funds
● Low turbidity
Ground Water &
Hyporheic Flow

5. Cloud Seeding
● catalytic reaction
● sufficient steam
● all seasons
● drainage basin
● warm & cold clouds
Ground Seeding
1. Burning rain enhancer
2. Lower cost
3. Effect from weather easily
Airborne Seeding
1. Sprinkle water in cloud
2. Higher cost
Source of image : Water Resources Agency
Source of image Military News Agency
increase 10% of rainfall
per year

6. The Interconnecting Pipeline
Project
Advantages:
● Stabilize water supply
● Pipelines interoperate
and regulate supply
● Adapt to high turbidity or
pipeline repair
● Remove reservoir
deposition
Lyiutan Reservoir
Shihkang
Dam
Water
Purification
Plants
Houli
1st.Pipeline
2nd.Pipeline
▇ during excess water supply
▇ during high turbidity period
Da-Jia River
Da-An River
provide 225 more thousand
CMD water supply.

7. Shuinan Water Recycling System
waste water
Anoxic pool
membrane bioreactor
Effluent
Aerobic pool
Architecture’s Action
Source of image : Chien Yueh Technology web
Central Park's irrigation water is
directly supply by the system of
Shuinan Trade and Economic Park
Supply about 900 CMD
recycled water
Provide to Central Park
and NSTC
First Community Middle
Water System

8. Enterprise‘s Action
Taiwan Semiconductor
Manufacturing CO., Ltd. (TSMC)
Iron and Steel Industry
Source of image : Central News Agency
Semiconductor reclaimed
water system
Dragon Steel Co.(DSC) Circulating
water system in the factory
The total recovery rate up to 98.58%
one drop can be used 3.5 times

9. 15 liters/person 5 liters/times 9 liters/times
30 liters/times 5 liters/times 3 liters/times 55 liters/times
What can we do？

10. Conclusion
Facing problems Solution
Uneven rainfall density Cloud seeding
Water purification cost increases due to
extreme weather
The Interconnecting pipeline
project of Da-An and Da-Jia River
Wasted water recycle and reuse low efficient 1. TSMC reclaimed water system
2. Shuinan Water Recycling System
3. DSC circulating water system
Hyporheic Water
Reservoirs Ground Water
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

11. Tenacity of
adapting to
extreme weather
Enterprise Individual
● Discover various water resources ↑ 1.83 million CMD
● Conserve water ↑ 3.06 million CMD
● Regulate and support supply ↑ 1.24 million CMD
● Enhance flexibility ↑ 0.3 million CMD
Recycle and reuse the water resources Taking action to save the water
Thrift & Reuse
Government

12. Thank you for listening
● Taichung city government, https://www.taichung.gov.tw/1253337/post
● Sun Moon Lake Drought, https://www.youtube.com/watch?v=u_q3zpya6_c
● Hyporheic flow,
https://www.wrasb.gov.tw/News_Content.aspx?n=31430&s=150675
● Ground water,
https://landsubsidence.wra.gov.tw/water_new/GwAnalysis/HydrographIndex
● Taiwan reservoir historical statistics, https://reservoir.cqd.tw/
● Chinese public television - Our island,
https://www.youtube.com/watch?v=iJ6kPwH_cMg
● Research Portal, https://portal.stpi.narl.org.tw/index/article/10611
Reference