WATER-ENERGY NEXUS in JAPAN

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Water Resources Department, Ministry of Land, Infrastructure, Transport and Tourism (MLIT), JAPAN

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Water Resources Management in Japan

森林の保全

水田の保全

地下水規制

ビル用水規制

工業用水利用

農業用水利用

水道事業

雑用水利用

水面の確保緑地整備

下水道事業

環境保全

蒸発

降水

貯水

浸透

河川流出

水源地保全水道原水規制

水道水源規制 水資源開発水源地域対策

河川管理

電源開発

水質保全

水利用

水処理

水循環系の健全化

水質保全

工業用水規制

Environmental conservation

Water Usage

Water Treatment

Discharge to River

Penetration

Evaporation

Sound water cycle

Precipitation

Forest Conservation

Irrigation Water UseRiver Management

Tap Water Supply

Industrial Water

SewageSystem

Reuse of Water

Environmental Flow

Regulation of Tap Water

Regulation of Tap Water in catchment area

Development of catchment Area

HydraulicPower

Conservation of Water Quality

Regulation for Water of Buildings

Regulation for Industrial Water

Conservation of Water Quality

Conservation of Upstream

Paddy Field Conservation

Impoundment

Regulation of Ground Water

Afforestation

Water Resources Development in Japan

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50,000

60,000

70,000

80,000

90,000

100,000

110,000

120,000

130,000

1940 1947 1950 1955 1960 1965 1970 1975 1980 1985 1990

人口（

千人）

■Since 1950 ○Industrial development○Rapid increase / concentration of urban population○Improved living standards

■Metropolitan area ○Sharp increase in water demand ○ Serious water shortage

○Securing stable water supply○Comprehensive/efficient development of river systems○Rapid funding

水需要の激増

0

2

4

6

8

10

12

14

16

18

1940 1950 1960 1970 1980 1990 2000

使用量（１０億m3/年）

○ Population changes

○Changes in water consumption

Rapid increase / concentration of urban population

Sharp increase in water demand

Water Resources Development Promotion Law• Established in 1961• Basis for rational development & utilization of

water resources• Designation of strategic river basins （ cross

prefectures ）• National government makes a water use plan for

strategic river basins in order to facilitate the consensus among stakeholders

Population (thousands of

people)(billion ㎥ /year)

Basic Plan for Water Resources Development

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Formulation of draft plan

Cabinet approval

Deliberation by National Land Development Council

subcommittee meetings on water resources development

Decision by Minister of Land, Infrastructure, Transportation

and Tourism

Discu

ssion

amon

g related

min

istries

Inq

uiry

session

amon

g related

p

refectures

Formulation of original plan[Investigation Item]

Purification Plant

Drinking water

Dam

Ocean

River

Farmland

Buildings

Purification Plant

Industrial water

Plants

Barrage

Irrigation Water

Houses

Dam(Planning)

　 Supply area in the target year

Estimation of demand in the target year

Supply target in the year

Supply Area

Basic su

rveys

Water Resources Department of MLIT ：　 Secretariat of National Land Development Council subcommittee meetings on water resources development, Formulation of original plan, Conducting basic surveys

Basic Plan for Water Resources Development

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1) Prospect for water demand & Supply target for different uses

2) Basic matters for the construction of necessary facilities to achieve supply target

3) Other important matters for rational and comprehensive development & utilization of water resources

Description of basic plan

Ocean

Promote low head hydropower generation

Use of sand control dam Power generation for dam

management

Hydro power station

Hydro power generation facility

Promote Low Head Hydro Power Generation and Utilize Sewage Resources

○Due to the tight condition of energy supply and progress of global warming, there is a growing demand for energy saving and utilization of renewable energies

○Low head hydro power generation and use of sewage resources are promoted toward low-carbon society

Use of agricultural water supply facilities

Small hydro power plant

Small hydro power facility

Electric power generation facility

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Utilization of sewage resource energy

Innovative sewage technology demonstration project

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Improve management of the sewage businessReturn the benefit to the local communityContribution to the global warming preventive measuresSecure phosphorus resources

Improve self energy supply rate utilizing the energy the sewage has Formulate energy supply bases by intensive treatment of biomass

generated in the region Utilize sewage heat by utilizing sewage conduit network in the city Promote collection of phosphorus from sewage and sewage sludge

Methane fermentation facility

Sewage treatment plant

Solid fuel facility

Phosphorus collection facility

Applying resin material (non-woven fabric) that maintains high density fungus inside the digestion tank

Latest bio technolog

y

Latest bio technolog

y

<Copper digestion tank>

Promote Low Head Hydro Power Generation and Utilize Sewage Resources

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Photos from Japan Water Week Photo Awards 2013

We are looking forward to seeing you at UNU Headquarter in Tokyo, Japan in March 2014