Internship in Eniwa City Water Supply & Sewerage Companies

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Internship in Eniwa City Water Supply & Sewerage Companies Moustapha SENE, Meister Candidate Supervisor : Prof. TANAKA N. Center of Sustainability Science, Hokkaido University, Sapporo, Japan 石狩東部広域水道企業団および恵庭市水道局における インターンシップの最終報告 マイスター候補生 ムスタファ センヌ 指導教員 田中教幸教授 北海道大学サステイナビリティ学教育研究センター

Transcript of Internship in Eniwa City Water Supply & Sewerage Companies

Page 1: Internship in Eniwa City Water Supply & Sewerage Companies

Internship in Eniwa City Water Supply &

Sewerage Companies Moustapha SENE, Meister Candidate

Supervisor : Prof. TANAKA N.

Center of Sustainability Science, Hokkaido University, Sapporo, Japan

Ongoing and future collaboration

between Hokkaido University and

International Institute for Water and

Environmental Engineering (2iE)

Scope:

In order to strengthen the relationship between Hokkaido University, Japan and the International Institute for water and Environmental Engineering (2iE), Burkina-Faso, the Center for Sustainability Science (CENSUS) organizes on February 1st, 2011 a one-day symposium titled: "Ongoing and future collaboration between Hokkaido University and international institute of water and environmental engineeing". We welcome presentations and works related to ongoing and planned collaborative research works between the two institutions.

Sessions:

This symposium will have the following session;9:30~09:40: Opening remarks90:40~11:10: session 1: Research activities in HU and 2iE11:20~12:20: session 2: Structure of education in HU and 2iE14:00~15:00:session 3: Feddbacks and reports form students 15:00~15:05: Concluding remarks

Conference Language:

English will be the official language of this symposium and translation service will not be available.

Venue:

The symposium will be held at meeting room CENSUS, Hokkaido University, Japan (see map).

Address:

zip code: 060-0809

N9W8, Sapporo, Japan

Registration

If you are willing to participate in this symposium please contact Dr. Guizani Mokhtar at [email protected]: 011-706-4530The registration is free

01 February 2012, Hokkaido Universtiy, Japan

Sponsored by JST/MEXT strategic funds for the promotion of science and technology: Strategic program for fostering environmental leaders

石狩東部広域水道企業団および恵庭市水道局における

インターンシップの最終報告マイスター候補生 ムスタファ センヌ

指導教員 田中教幸教授

北海道大学サステイナビリティ学教育研究センター

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Ishikaritobu Water company石狩東部広域水道企業団

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Ishikaritobu water company

石狩東部広域水道企業団

Izarigawa River (Old)

漁川 (旧)-Implementation 稼働開始 1979年-Distribution給水量 72,000m3/day

-4 cities 4市

Chitosegawa River (New)

千歳川(新)-Operational 稼働予定 2015 年-Distribution 給水量 26,480m3/day

- 4 cities + 3 villages 4市3村

Networks General View 給水系統

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Population Trend deserves by Ishikaritobu water

company

石狩東部広域水道企業団管区内の人口推移

69084

345213

0

60,000

120,000

180,000

240,000

300,000

360,000

420,000

1980 1985 1990 1995 2000 2005 2010 2015

Po

pu

lati

on

Years

Eniwa Kitahiroshima Chitose Ebetsu Total population 恵庭 北広島 千歳 江別 総人口

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Japan population trends

日本の人口推移

Predicted change in total population in Japan 日本の総人口の推移予測

Source :Demographic statistics from the CIA World Factbook, October 2010

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Population Trend deserves by Ishikaritobu water company石狩東部広域水道企業団管区内の人口推移

0

60,000

120,000

180,000

240,000

300,000

360,000

420,000

1980 1985 1990 1995 2000 2005 2010 2015

Po

pu

lati

on

Years

Eniwa Kitahiroshima Chitose Ebetsu Total population

Change in population trends & increase investment in water infrastructure人口動態の変化&水道設備への投資増

恵庭 北広島 千歳 江別 総人口

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Ishikaritobu-Emergency situation

石狩東部広域水道企業団における危機管理対策

Eniwa 1

60.0 m3

Eniwa 2

56.7 m3 Kitahiro. 1

29.0 m3

Kitahiro.2

26.6 m3Ebetsu

86.67 m3

Reservoir capacity of each of the connected cities

接続各都市の貯水容量

Eniwa

恵庭Chitose

千歳Kita.hiro

北広島Ebetsu

江別Unit

単位

Izarigawa Riv.

漁川

24,000 4000 24,000 20,000 m3/day

Chitosegawa

Riv. 千歳川6,400 11,900 2,800 100 m3/day

Chitose

27.0 m3

If Izarigawa networks break down, in the following few hours after

all reservoirs will be completely empty.

漁川水系に問題が起きた場合、数時間ですべての貯水池が空になってしまう

Increase the reservoirs capacities in each city should be done

各地域の貯水容量を増加すべき

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Ishikaritobu-Emergency situation

石狩東部広域水道企業団における危機管理対策

Earthquake Events 地震の際

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Ishikaritobu-Emergency situation

石狩東部広域水道企業団における危機管理対策

Earthquake events 地震の際

Old pipes ≥ 30 years and

古い配管は30年以上non seismic resistant pipes

非耐震管

Fragile Pipe and a low intensity of

earthquake has a potential damages

them.

地震は尐ないが、配管の老朽化による破損が懸念される

Pipes replacement is required

配管の入れ替えが必要

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Ishikaritobu-Emergency situation

-Management plan of WTP-

石狩東部広域水道企業団における危機管理対策

Replacement of all pipes to

anti-seismic pipes.

全ての配管を耐震管に交換

Expensive 高価

Decentralize water systems

unit implementation

給水系統の分散

Cheap 安価

I II

(long term) 長期的 ( Short term) 短期的

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Emergency Response 緊急時の対応

I.W.P

TANK

URGENT

TANK

ENIWA 1

Tank

Pathway 1- Water purification plant company

対策1:緊急用貯水タンク

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Emergency Response 緊急時の対応

WC

TANK

URGENT

TANK緊急用タン

ENIWA 1

Tank

Valveバルブ

Underground reservoir should be

constructed in strategic points

allowing to provide water at least

for 2 days for the eventual victims.

災害時に備えて、地下の貯水槽は被災者に尐

なくとも2日間給水できるように配置される

べき

Pathway 1- WTP

対策1:緊急用貯水タンク

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Pathway 2 (May be included in the emergency kit of the city)

対策2 非常用持ち出し袋を市が提供

Emergency Response 緊急時の対応

Water bottles

水Food

食料

Mobil toilet

携帯用トイレ

Be prepared in Emergency

緊急時への備え

How many water bottles? Who should prepare them?

水の必要量は?誰が準備するか?

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Ishikaritobu – Sludge production & removal cost石狩東部広域水道企業団における汚泥の処理量と費用

¥0

¥5,000,000

¥10,000,000

¥15,000,000

¥20,000,000

¥25,000,000

¥30,000,000

0

400

800

1200

1600

2000

2003 2005 2007 2009 2011

Slu

dg

e p

rod

ucti

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(t)

Year

Slu

dg

e d

isp

osal

co

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Sludge (t) Disposal cost ($)

Sludge production and disposal cost increase during years.

汚泥の処理量と処理費用は年々増加している

Cheapest way of sludge disposal for Ishikaritobu-

continue making contracts with private companies最も安価な汚泥処理方法は、民間企業との提携を続けること

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SUMMARY I – Recommendations Ishikaritobu

water supply company

まとめ1:石狩東部広域水道企業団への提案

Change in population trends and high investment in water

infrastructure 人口の動態変化や水道設備にかかる費用の増大

Construction of underground reservoir in strategic points 適所に地下貯水槽を建設

- How many urgent tanks is required for Eniwa city? 恵庭市に幾つ緊急用貯水槽が必要か?

- Who will support financially this project ? 誰が資金提供をするか?

- When and where to construct the urgent tanks ? いつ、どこに緊急用貯水槽を建設するか?

Increase the reservoirs capacities of each city. 各都市の貯

水容量を増加させる

Proper planning for the replacement of the current

pipelines to anti-seismic one is required. 現在の配管の耐震化

を計画的に進める

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Eniwa Sewage Company 恵庭市水道局

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Eniwa city Sewage company: Introduction 恵庭市下水道の概要

97.3 % of the population are

connecting to the sewage network

人口の97.3%が下水道を利用

2.7 % of the population are using

Jaokasto, descentralized sanitation

system

人口の2.7%が浄化槽を利用

11.1 t/ day of organic waste

generated from household are

received in WWTP毎日家庭から発生する生ごみ11.1トンが処理場に送られる

Total population, 2010 : 69,0842010年度の人口 69,084人

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Eniwa WWTP - Sludge production & disposal cost

恵庭市終末し尿処理場:汚泥の処理量と廃棄コスト

¥0

¥10,000,000

¥20,000,000

¥30,000,000

¥40,000,000

¥50,000,000

¥60,000,000

¥70,000,000

0

1000

2000

3000

4000

5000

6000

7000

1981 1986 1991 1996 2001 2006 2011 2016

Slu

dg

e d

isp

osal

co

st

Slu

dg

e p

rod

ucti

on

(t)

Year

Sludge (t) Disposal cost ($)

Sludge production increases and disposal cost fluctuates:50-70 millions Yen 汚泥の処理量は増加、廃棄コストは5000万~7000万円で

変動

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恵庭市終末し尿処理場における現在の汚泥利用

Eniwa city sewage water company: Current

utilization of the sludge in the WWTP

Sludge intermediate products

汚泥中間生成物

Biogasバイオガス

Compost コンポスト(96%)

Cement セメント(4%)

Sludge final products汚泥最終生成物

Japan Sewage Works Association: Tokyo, ca. 2002), p. 31.Compost from Tomawave company - Photo taken by Sene.

Dried sludge乾燥汚泥

43% of the total electricity電力の43%

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Visit to private companies using dried sludge as raw material 乾燥汚泥を利用する民間企業訪問

Eniwa city sewage company 恵庭市終末し尿処理場

Farmer農家

Gardening 園芸

S&K Env. Vac. Center Tomawave

Customers : 200-300 persons

消費者 200-300人

Max compost sell out: 1200t / year

最大販売量:毎年1200トン

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Dried sludge compost: Farmers point of view?堆肥化乾燥汚泥に関する農家の意見

Eniwa WWTP - Interview with some farmers

恵庭市終末し尿処理場:農家へのインタビュー

Averse to the use of compost

乾燥汚泥堆肥の利用を嫌う

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Eniwa city sewage water company

恵庭市終末し尿処理場Compost from dried sludge in Market

市場に流通している乾燥汚泥由来堆肥

Source: S&K, Environmental Vaccine Center, 2012

Keeping working with private

companies is required since there

is still demand in compost; and

our compost quality is high

comparing to EU & US EPA

Standard 民間企業との連携維持は、

堆肥の需要が続く限り必要。生産される堆肥の品質はEU及び米国EPA規格に比較しても高い。

Private companies issues

民間企業連携における課題

High price of compost derived

from sludge. 堆肥販売額が高い

Heavy metal concerning

重金属の懸念

Stability of compost demand in future 将来の堆肥需要減

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SUMMARY - Problems analysis まとめ:問題点の分

Eniwa city sewage water company

恵庭市終末し尿処理場

Odor Issues: local people complains about the bad

odors derived from the WWTP – Deodorization Issues

臭気問題:周辺住民は処理場からの悪臭に苦情を訴えている

High sludge removal cost ( ~ 50 – 70 Millions tones /year)

高額な汚泥廃棄コスト(5000万~7000万円)

1

2

Lack of clear and Sustainable Management

plan of the sludge in the city.

市内における持続可能な汚泥処理計画が必要

Reduction in number of the private companies that are in charge of

transforming the dried sludge into compost or cements (originally

8, but currently 5)

乾燥汚泥を堆肥やセメントに加工する民間企業の減尐(8→5社)

3

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Problems analysis (Continued) 問題点の分析(続き)

Sewerage pipes system (1980-2013) age ≥ 33 years

下水の配管系統は古いもので33年前のもの

Rehabilitation plan of the network pipeline is required and

should be studied in detail

配管系統の詳細な調査と入れ替えが必要になってきている

Old and fragile pipelines; subsequently present a high

potential to be damaged, even in a low intensity of

Earthquake event. 地震は尐なくても、配管の老朽化による破損が懸念される

Suggestion ! 提案

Eniwa city sewage water company

恵庭市終末し尿処理場

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Final products inside WWTP

終末処理場内における最終生成物

Biogas + Dried sludgeバイオガスと乾燥汚泥

Compost 堆肥

Biogas + Dried sludgeバイオガスと乾燥汚泥

Cement セメント

Biogas + Ashバイオガスと灰

Cement / Backfill for making pipelines セメントやパイプラインの裏込材

Biogas + Charcoalバイオガスと炭

Ash 灰

Charcoal 炭

Final products outside WWTP終末処理場外の最終生成物

Which sludge management technology options is suitable for Eniwa

city? 恵庭市にとって最適な汚泥処理の選択肢とは?

Sludge Management Plan – Proposal 汚泥処理法についての提案

Eniwa city sewage water company

恵庭市終末し尿処理場

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Technology Selection : New deodorization facilities - Incinerator -

Carbonization plant? 技術の選択:脱臭設備、焼却炉、炭化装置?

Eniwa Sewage Company - Sludge Management

恵庭市における汚泥処理

New Deodorization Facility

新しい脱臭設備

Incinerator plant implementation

焼却炉の導入

Carbonization plant implementation

炭化装置の導入

Option 0 :

Option 2 :

Option 1 : ✔

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Technology Selection : Incinerator or Carbonization

plant? 技術の選択:焼却炉か炭化装置か?

Eniwa Sewage Company - Sludge Management

恵庭市における汚泥処理

Cost effectiveness

(Implementation –Operation –Maintenance)

導入ー運用ーメンテナンスの費用対効果

Odors pollution control 臭気排出対策

End product Handlings & Management

最終生成物の取り扱いと管理

End product Marketability 最終生成物の市場性

GHGs Emissions 温室効果ガスの排出

1

2

3

4

5

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Carbonization plant - Drastically reduced in GHGs emissions

炭化装置により温室効果ガスの排出を大幅に削減可能

37, 000t of CO2 equivalents will be removed, which is equal to 103 Km2 forest

absorption (Oda, 2006)

3万7千トンの二酸化炭素換算量が炭化によって除去される(103km2 の森林吸収量と同等)

CO2

CO2

15 % reduction in N2O, which is 310 times the CO2 emissions

二酸化炭素の310倍の温室効果がある一酸化二窒素が15%減尐

Technology Selection : Incinerator or Carbonization plant ?技術の選択:焼却炉か炭化装置か?

二酸化炭素

通常の焼却 炭化

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Technology Selection : Incinerator /Carbonization plant?技術の選択:焼却炉か炭化装置か?

1/10 in weight of Dewatered Sludge or less 重量で脱水汚泥の1/10以下1/8 in volume of Dewatered sludge or less 容量で脱水汚泥の1/8以下

Sludge contents

changes with

Carbonization

汚泥の組成が炭化によって変化

水分

可燃物

脱水汚泥 乾燥汚泥

蒸発

炭化物

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Criteria

条件Option 1 (carbonization)

選択肢1 炭化技術Option 2 (Incinerator)

選択肢2 焼却炉

Implementation cost

投資額High cost (?) 高額? Low cost (3 Billions / 52t)

低額 (52トンで30億)

Operation & Maintenance cost

運用コストLow cost (less energy consumption)

低(低エネルギー消費)High cost (high energy consumption)

高(高エネルギー消費)

Odors control

臭気の管理Effective in odor removal

脱臭に効果的Effective in odor removal

脱臭に効果的

GHGs Emissions

温暖化ガス排出More effective in GHGs control

温暖化ガスの排出削減に効果大Less effective in GHGs control

温暖化ガスの排出削減に効果尐

Ash control

灰の処理Production of Small amount of ash

灰の生成量は尐ないProduction of big amount of ash

灰の生成量は多い

Market

市場性Charcoal as fuel based

(8.4 MJ/Kg > coal calorific value)

炭化物の燃料としての利用(8.4MJ/Kg、石炭よりも熱量が大き

い)

Ash for cement / backfill

for making pipelines

灰はセメントまたはパイプラインを建設する際の裏込材として活用

End product handlings

最終生成物の取り扱いEasy to manage carbonized materials

炭化生成物の取り扱いは容易Difficult to manage ash

灰の取り扱いは困難

Returned Option 2 : Incinerator plant

(Incineration of sludge and municipal solid waste)

結論: 焼却炉(汚泥と市内の固形廃棄物を焼却)

Technology Selection : Incinerator or carbonization plant ?

技術の選択:焼却炉か炭化装置か?

Eniwa Sewage Company – Sludge Management

恵庭市における汚泥処理

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Incinerator must be able to meet local and national air pollution

regulations. In addition to the emission of odor, incinerator without air

pollution controls emit large quantities of flyash but only small amount

of sulfur and nitrogen oxides. (Vesiling P. A., 1994)

および地方自治体の大気汚染基準を満たしていること。大気汚染に関する制御のな

い焼却炉は臭気を発し、飛散灰を大量に放出するものの、硫黄、窒素酸化物の排出

量は尐ない。

Successful incineration is possible if the following are provided in adequate supply: 理想的な焼却炉のための条件

- Time 焼却時間- Temperature 温度- Turbulence 撹拌- Oxygen 酸素- Constant and adequate feed 焼却物の適量かつ継続的供給

(Vesiling P. A., 1994)

Selection of an appropriate Incinerator?焼却炉の比較検討

Eniwa Sewage Company – Sludge Management

恵庭市における汚泥処理

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Environmental quality Standards in Japan – Air quality

日本の大気汚染環境基準

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Substances Environmental conditions

Sulfur dioxide (SO2)

二酸化いおう

Daily average for hourly values < 0.04 ppm & hourly values < 0.1 ppm (May 16, 1973)

1時間値の1日平均値が0.04ppm以下であり、かつ、1時間値が0.1ppm以下であること

Carbon monoxide (CO)

一酸化炭素

Daily average for hourly values <10 ppm & hourly values of 8 hr consecutives <20 ppm (May 8,

1973)

1時間値の1日平均値が10ppm 以下であり、かつ、1時間値の8時間平均値が20ppm以下であること

Suspended particulate

matter

浮遊粒子状物質(SPM)

Daily average for hourly value < 0.1 mg/m3 & hourly values <0.2 mg/m3 (May 8, 1973)

1時間値の1日平均値が0.10mg/m3以下であり、かつ、1時間値が0.20mg/m3以下であること

Nitrogen dioxide (NO2)

二酸化窒素

Daily average values for hourly values 0.04-0.06 ppm (July 11, 1978)

1時間値の1日平均値が0.04ppmから0.06ppmまでのゾーン内又はそれ以下であること

Dioxins (PCDDs, PCDFs

& coplanar PCBs)

ダイオキシン類

Annual average < 0.6 pg-TEQ/m3

1年平均値が0.6pg-TEQ/m3以下であること

Photochemical oxidants

光化学オキシダント

Hourly values <0.06 ppm (May 8,1978)

1時間値が0.06ppm以下であること

Fine particulate matter

(PM2.5) 微小粒子状物質

Annual standards ≤ 15.0 υg/m3 ( September 9, 2009)

1年平均値が15μg/m3以下であり、かつ、1日平均値が35μg/m3以下であること

Benzene ベンゼン Annual average <0.003 mg/m3 (February 4, 1997) 1年平均値が0.003mg/m3以下であること

Tri(Tetra) chloroethylene

トリ/テトラクロロエチAnnual average <0.2 mg/m3 (February 4, 1997) 1年平均値が0.2mg/m3以下であること

http://www.env.go.jp/en/air/aq.html

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Selection of an appropriate Incinerator?焼却炉の比較検討

Eniwa Sewage Company – Sludge Management

恵庭市における汚泥処理

Fluidized bed incinerator

流動床式焼却炉

Multiple hearth incinerator

多段焼却炉

Stock fired furnace

ストーカー式焼却炉

Rotary Kiln incinerator

ロータリキルン焼却炉

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Selection of an appropriate Incinerator?焼却炉の比較検討

Eniwa Sewage Company – Sludge Management

恵庭市における汚泥処理

Fluidized bed incinerator流動床式焼却炉

Multiple hearth incinerator多段焼却炉

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Selection of an appropriate Incinerator? 焼却炉の比較

Eniwa Sewage Company – Sludge Management

恵庭市における汚泥処理

Incinerators Advantages 長所 Disadvantages 短所

Fluidized Bed

流動床式焼却炉

-Ash quality : fine particles 灰質:微細粒子-No additional odor control equipment required

臭気対策のため追加機器必要なし-Excess air : only 20-30 % 過剰空気:20〜30%

のみ-Easy heat recovery 熱回収が容易-Small residence time (≈ 6s) 滞留時間が短い

(≈6S)-no mixing device 攪拌装置不要-Decrease sludge volume 汚泥の体積減尐-Decrease S. transport. Cost 汚泥の輸送コスト

-High implementation cost

初期投資が高い

Multiple Hearth

多段焼却炉

-Low implementation cost 初期投資が尐ない-Decrease sludge volume 汚泥の体積減尐-Decrease sludge transporter.

cost to private companies 民間企業への汚泥の輸送コスト尐

-Ash quality : big particles 灰質:大粒子-Odor control equipment is required 臭気対策

装置必須-Excess air : > 50% 過剰空気:>50%

-High initial cost 初期投資が高い-Long residence time 滞留時間が長い-Drying pretreatment required 乾燥前処理が必

要-Sometimes insufficient mixing with heated air

加熱空気との混合が不十分な場合がある

Returned Option : Fluidized bed Incinerator

流動床式焼却炉

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Eniwa Sludge

Management-

Returned option

恵庭市における汚泥処理法の提案

Sludge

汚泥

Thickening

濃縮

Digestion

消化

Dewatering

脱水

Incinerator

焼却炉

Ash

Cement

セメント

Construction

material

建築材料

Compost

コンポスト

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Incinerator location?

焼却炉の設置場所

Incinerator near the WWTP will cause less transportation cost for the sludge

処理場の近くに焼却炉を設置することで、輸送コストを軽減できる

Ash transportation cost

灰の輸送コスト

WWTP 終末処理場

Private company

民間企業

Incinerator

Incinerator

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Incinerator location (continued)?焼却炉の設置場所 (続き)

Eniwa Sewage Company – Sludge Management

恵庭市における汚泥処理

Optimize sludge transportation cost 汚泥の輸送コストを最適化

Optimize land use 土地の有効活用

Mitigate eventual land purchasing cost for the incinerator

焼却炉用地取得のためのコストを軽減

The incinerator should be located near/inside the WWTP area

焼却炉は、処理場敷地内か、近くに設置するべき

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Management of the produced Ash? 灰の処理

WWTP

Authorities

終末処理場

Private

companies

民間企業

Sludge final product : Ash for construction material (cements) or backfill

for making pipelines 汚泥最終生成物:灰は建設資材用(セメント)またはパイプラインを建設する際の裏込材として活用できる

Strong relationship between public (WWTP) and private sector should be

promoted in order to achieve a sustainable utilization of sludge final product

汚泥最終生成物の持続可能な利用のために終末処理場と民間企業との間の強い連携を推進すべき

How much money

WWTP willing to pay?

いくら金額を支払うか

The best management for ash is recycling and reusing!

最善の方法は、リサイクルと再利用!

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Incinerators: Environmental Impact Assessment

焼却炉の環境影響評価

Eniwa WWTP

1) Effects of the incinerator on environment?

焼却炉が周辺の環境に与える影響は?

2) Effects of the incinerator on people living in the vicinity?

焼却炉が周辺の住民に与える影響は?

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Eniwa Sewage Company – Sludge Management

恵庭市における汚泥処理

Effects of the incinerator on environment

Increase global warming

Figure adapted from Hong Kong Special Administrative Region , 2009 in Sustainability 2010 ,2, 1943-1968

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Environmental Impact Assessment?

環境影響評価

Eniwa Sewage Company – Sludge Management

恵庭市における汚泥処理

Effects of the incinerator on environment

焼却炉が周辺環境に与える影響

The most critical impact of the fluidized incinerators on the

environment is Global warming potential (CO2 emissions)

流動床焼却炉が環境に与える最も重要な影響は、地球温暖化係

数(CO2排出量)である

Hung M-C et al 2011

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No additional odor equipment is required for our selected incinerator type

(Fluidized bed incinerator). Therefore, no eventual odor will be derived from the

incinerator. 流動床焼却炉を選択する場合、追加の臭気対策装置は不要。焼却炉からは臭気は派生しない。

No health effect on people living around

the Incinerator 焼却炉周辺に住む人々住民の健康被害はないと思われる

Human can be adversely affected by exposure to air pollutants in the ambient air.

In response, Japanese government (or EU or EPA) as developed an extensive

body of legislation, which established health based standards and objectives for

a number of pollutant in Air 大気中の大気汚染物質への暴露により人体は悪影響を受ける可能性がある。そのため、日本政府(EUまたはEPAも同様)は空気中の汚染物質の量に基準値を設けている。

Environmental Impact Assessment? 環境影響評価

Eniwa Sewage Company – Sludge Management

恵庭市における汚泥処理

Effects of the incinerator on people living in the vicinity: Advantages

焼却炉が周辺の住民に与える影響: 利点

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Environmental Impact Assessment ?

Eniwa Sewage Company – Sludge Management

Effects of the incinerator on people living in the

vicinity : Avantages (Continued)

Utilization of the excess heat from incinerator 焼却炉の余剰熱の利用

Provide free compost to farmers living around the WWTP, since compost derived

from our sludge is a high quality.

汚泥由来の高品質な堆肥を処理場周辺農家に無料提供する事で地元に還元

Snowmelting for road 道路の融雪

Supplying hot water 給湯

Heating greenhouse 施設園芸

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Environmental Impact Assessment?

環境影響評価

Eniwa Sewage Company – Sludge Management

恵庭市における汚泥処理

Effects of the incinerator on people living in the vicinity

焼却炉が周辺の住民に与える影響

The presence of the incinerator will affect traffic in this area:

焼却炉による周辺地域における交通量への影響- Garbage truck ごみ収集トラック- Chemical distributions 化学薬品の移送- Ash transportation 灰の輸送

Therefore, this traffic may cause some disturbance (nuisances) to the

local residence: noise, exhaust gas, eventual odors from the Garbage truck,

交通量の増加に伴い、騒音や排気ガス、ごみ収集車からの悪臭など、周辺住民に悪影響(迷惑)を与える可能性がある。

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Eniwa city municipality, water supply and

sewerage authorities

Ongoing and future collaboration

between Hokkaido University and

International Institute for Water and

Environmental Engineering (2iE)

Scope:

In order to strengthen the relationship between Hokkaido University, Japan and the International Institute for water and Environmental Engineering (2iE), Burkina-Faso, the Center for Sustainability Science (CENSUS) organizes on February 1st, 2011 a one-day symposium titled: "Ongoing and future collaboration between Hokkaido University and international institute of water and environmental engineeing". We welcome presentations and works related to ongoing and planned collaborative research works between the two institutions.

Sessions:

This symposium will have the following session;9:30~09:40: Opening remarks90:40~11:10: session 1: Research activities in HU and 2iE11:20~12:20: session 2: Structure of education in HU and 2iE14:00~15:00:session 3: Feddbacks and reports form students 15:00~15:05: Concluding remarks

Conference Language:

English will be the official language of this symposium and translation service will not be available.

Venue:

The symposium will be held at meeting room CENSUS, Hokkaido University, Japan (see map).

Address:

zip code: 060-0809

N9W8, Sapporo, Japan

Registration

If you are willing to participate in this symposium please contact Dr. Guizani Mokhtar at [email protected]: 011-706-4530The registration is free

01 February 2012, Hokkaido Universtiy, Japan

Sponsored by JST/MEXT strategic funds for the promotion of science and technology: Strategic program for fostering environmental leaders

Merci

Gracias

Diokodial

Thank you

Diareudieuff

Domo Arigato Gosaimasu