2010 Water: Crisis and Choices: Paul David Reiter
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Transcript of 2010 Water: Crisis and Choices: Paul David Reiter
8/3/2019 2010 Water: Crisis and Choices: Paul David Reiter
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Water and Wastewater in Asia --The Imperative for New Approaches to Urban
Water and Wastewater Management
ADB & Partners Conference
Manila12 October, 2010
Paul Reiter Executive Director
UNICEF Urban WASH workshop,October, 2009
The views expressed in this presentation are the views of the speaker and do not necessarily reflect the views or policies of the Asian DevelopmentBank (ADB), or its Board of Governors, or the governments they represent. ADB does not guarantee the accuracy of the data included in this paper
and accepts no responsibility for any consequence of their use. Terminology used may not necessarily be consistent with ADB official terms.
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a global network for water professionals
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Growt h in More, Less Developed Countr ies
世界
10000
12000
(m illion)
I t ’s Not Just Populat ion Grow th
Billions
8
9
10
4000
6000
8000
Population
Income ~ Resources
12
3
4
5
6
7
Less Developed Regions
More Developed Regions
0
2000
B C
4 0 0
B C
2 0 0
A D
1 2 0
0 4 0
0 6 0
0 8 0
0
1 0 0 0
1 2 0 0
1 4 0 0
1 6 0 0
1 8 0 0
2 0 0 0
2 2 0 0
1950 1970 1990 2010 2030 2050
Source: United Nations, World Population Prospects: The 2004 Revision (medium scenario), 2005.
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WAS MALTHUS RIGHT?
tThomas Malthus, 1766-1834
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DANGER + OPPORTUNITY
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o ng ore w ess
40% Shortfall b 2030
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Urbanization Differences 2004
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IncreasingUrbanization
HigherIncomes
Capita ResourceRequirement
Rates andPo ulation Growth
Fallin Growth or
Force A
Dominates Water Needs
Water for Food,Cities Industr
Net Decline) inOverall Water
in Next 20 Years
UNICEF Urban WASH workshop, October, 2009Energy Requirements
Force A Force B
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Urban Sanitation is Our Bi est
Challenge in the Next Decade
Challenges
growth in needs
Lack of a common understandin of conce ts
options and language for moving forward Need to invent new physical and institutional
so u ons o o pro ems
Financial and capacity shortfalls that will need to
long term
UNICEF Urban WASH workshop, October, 2009
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Historical Urban Sanitation O tions
Highly
Centralized
+ os ,+Water,
+Energy
Network
Costs
& Operability
On-Site
Density
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s a ew ame -- o en a y
Game changing shifts in technology & thinking Scale modularity, network, land
Reuse potential
Energy recovery potential Resource limitations
Scarcity of conventional water
Scarcit of nutrients
Wastewater transformed from an unmitigatedliability to an asset
UNICEF Urban WASH workshop, October, 2009
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In the Future Urban Water
Systems Will Be Able To…
Facilitate the safe reuse of water Produce energy
Use much less water (50-70% less)
Cost much less
UNICEF Urban WASH workshop, October, 2009
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From Linear to Closed Loop
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Ev lvin r n ni i n i n
Highly
Centralized
+ os ,+Water,
+Energy
Network
Costs
Semi-
On-Site
-Cost,
-Water,-Energy-Land
Density
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Creating a Portfolio of Viable
Sanitation OptionsConventionalHigh-Water Use
Systems
Nodal Systems Low-WaterLow-Cost
Viable and Appropriate
Systems
Wastewater
Ponds
In-Situ
Treatment,
Options
utr entRecovery andReuse Dry Systems in
Both Urban
and Rural
W t S l d S it ti f AllW t S l d S it ti f All
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Water Supply and Sanitation for All Water Supply and Sanitation for All Set. 27 Set. 27- -28, 2007, Berching, Germany 28, 2007, Berching, Germany
Case stu y 3: a new y eve opeCase stu y 3: a new y eve opedistrict as an independent water districtdistrict as an independent water district
Configuration of an independent waterConfiguration of an independent water
North lakeDistrict wastewater
Gardenin
District
(Regulation
lakes)
Forestation
Car washing
South lake
Associated
wetland
wastewater
treatment
plant (Tertiary treatment)
sce aneoususes
District storm water
(Secondary treatment)
drainage
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Ochiai Sewage Treatment Plant
The Gap HouseThe Gap House
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Concept Applicable atConcept Applicable at
Household LevelHousehold Level
Kitchen (8%)
Bathroom (15%)
Laundry (10%)
Toilets (12%)
Hot water (15%)On-site
STP
• e uce wa er use romReticulation by 60%
•
20kL Roof
water Tank
Tank
Overflow External use
Landscaping & lawn
Fire
Hydrants
(40%)
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Recent Schemes With Significant
Closed Loop Configurations
Scheme % Reduction in potable % Reduction in
Pimpama – Coomera 80% >70%
Rouse Hill 50% >90%
Homebush Bay-
Olympic Village
67% 100%
Mawson lakes 50% >80%
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Simplified System Costs - D. Mara
Next Set of Choices
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Next Set of Choices
Return Hope Get
What You What You’
What You
or asy
Options Now
.. ..
Know..
32
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Thank You
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