SLURRY TREATMENT EQUIPMENTSLURRY TREATMENT EQUIPMENT

Name of Project And Location Value of Work Contract Commencementand Completion Dates

IN HANDMetropolitan expressway, Japan φ11.45ｍ Dec,02 - Aug,04

Tokyo Waterworks, Japan φ4.5ｍ Sep,03 - Mar,05

Shinmei utility tunnel, Japan φ5.62ｍ May,03 -Apr,05

Metropolitan expressway, Japan φ13.06m May,03 -Apr,05

Ishioka tunnel, Japan φ4.4m Oct,03 - Dec,06

COMPLETEDGaikaku Diversion Channel, Japan φ12.04ｍ Feb,01 - Jan,03

Metropolitan Intercity Railway, Japan φ10.6ｍ Apr,01 - Mar,02

Metropolitan Intercity Railway, Japan φ10.2ｍ Nov,01 - Jan,03

Tokyo Sewer, Japan φ4.5ｍ Aug,01 - Feb,02

Fukuoka Sewer, Japan φ6.15m Feb,02 - Jul,03

KANKYO ENGINEERING CO., LTD.

PAST AND PRESENT PERFORMANCE RECORD

SLURRY TREATMENT EQUIPMENTSLURRY TREATMENT EQUIPMENT

・・ PURPOSEPURPOSE To separate and recover excavated soil from To separate and recover excavated soil from the slurry discharged from the shield machine the slurry discharged from the shield machine and to return treated slurry to the excavation face and to return treated slurry to the excavation face for reuse.for reuse.

SLURRY TREATMENTSLURRY TREATMENT

・　・　 PRIMARY TREATMENT PRIMARY TREATMENT Separation of rock, gravel and sand from the Separation of rock, gravel and sand from the slurry.slurry.

・　・　 SECONDARY TREATMENTSECONDARY TREATMENT Separation of silt and clay from the slurry.Separation of silt and clay from the slurry.

・　・　 THIRD STAGE TREATMENTTHIRD STAGE TREATMENT Treatment of water collected from the Treatment of water collected from the secondary treatment and from the tunnel as to secondary treatment and from the tunnel as to meet the environmental protection requirement meet the environmental protection requirement and then to discharge outside the premises. and then to discharge outside the premises.

FLOW DIAGRAM OF SLURRY TREATMENT FLOW DIAGRAM OF SLURRY TREATMENT

PRIMARY TREATMENTPRIMARY TREATMENT

・　・　 GRAVEL SEPARATORGRAVEL SEPARATOR　　 A vibrating sieve machine with larger screen size A vibrating sieve machine with larger screen size to separate rock and gravelto separate rock and gravel ・　・　 CYCLONECYCLONE A centrifugal separator to separate clay and silt A centrifugal separator to separate clay and silt from the slurry free of rock and gravel. Separated from the slurry free of rock and gravel. Separated slurry containing clay and silt flows upward to the slurry containing clay and silt flows upward to the regulating tanks.regulating tanks.・　・　 SAND SEPARATORSAND SEPARATOR　　 A vibrating sieve machine to separate sand from A vibrating sieve machine to separate sand from the slurry coming downward from the cyclone.the slurry coming downward from the cyclone.

・　・　 The solids separated at the primary treatment The solids separated at the primary treatment is carried on belt conveyors to the gravel and sand pit is carried on belt conveyors to the gravel and sand pit for carrying out on dump trucksfor carrying out on dump trucks

SECONDARY TREATMENTSECONDARY TREATMENT

・　・　 PRETREATMENTPRETREATMENT Coagulant is added to the slurry to form flocks of Coagulant is added to the slurry to form flocks of clay and silt.clay and silt.

・　・　 FILTER PRESSFILTER PRESS Slurry is then compressed by high pressure pumps Slurry is then compressed by high pressure pumps into the filter press for dehydration to form cakes.into the filter press for dehydration to form cakes. The cake discharged from the filter press is carried The cake discharged from the filter press is carried on belt conveyors to the cake pit for carrying out on on belt conveyors to the cake pit for carrying out on dump trucks.dump trucks.

THIRD STAGE TREATMENTTHIRD STAGE TREATMENT

・　・　 SUSPENDED SOLID (SS) TREATMENTSUSPENDED SOLID (SS) TREATMENT Coagulant is added to the filtered water to form Coagulant is added to the filtered water to form flocks and SS is removed by precipitation.flocks and SS is removed by precipitation.

・　・　 pH ADJUSTMENTpH ADJUSTMENT Carbon dioxide gas is added to the filtered water for Carbon dioxide gas is added to the filtered water for pH adjustment.pH adjustment.

FLOW DIAGRAM OF SLURRY TREATMENT FLOW DIAGRAM OF SLURRY TREATMENT

図面図面

GRAVEL SEPARATORGRAVEL SEPARATOR (PRIMARY TREATMENT)(PRIMARY TREATMENT)

GRAVEL SEPARATORGRAVEL SEPARATOR (PRIMARY TREATMENT)(PRIMARY TREATMENT)

7300 3950

2 10 0

3350

5619

CYCLONE CYCLONE (PRIMARY TREATMENT)(PRIMARY TREATMENT)

SAND SEPARATOR SAND SEPARATOR (PRIMARY TREATMENT)(PRIMARY TREATMENT)

SAND SEPARATOR SAND SEPARATOR (PRIMARY TREATMENT)(PRIMARY TREATMENT)

6169

2490

2800 3950

7252

6250

7159

.5

2100

FILTER PRESS FILTER PRESS (SECONDARY TREATMENT)(SECONDARY TREATMENT)

FILTER PRESS FILTER PRESS (SECONDARY TREATMENT)(SECONDARY TREATMENT)

1650

2350

2350

14000 2830

4403

1650

Filtration Treatment

Filtered　water Filtered　water Feeding Slurry Filtration Finish Discharging Cake

(Generate　Cake)

FILTER PRESS FILTER PRESS (SECONDARY TREATMENT)(SECONDARY TREATMENT)

THIRD STAGE TREATMENT EQUIPMENTTHIRD STAGE TREATMENT EQUIPMENT

THIRD STAGE TREATMENT EQUIPMENTTHIRD STAGE TREATMENT EQUIPMENT

5000 2350

3056

2350

3365

Waste water treatment equipment pH control equipment

TANKSTANKS

Regulation tank, Surplus slurry tank, Slurry tank etc.Regulation tank, Surplus slurry tank, Slurry tank etc.

TANKSTANKS

Regulation tank, Surplus slurry tank, Slurry tank etc.Regulation tank, Surplus slurry tank, Slurry tank etc.

6475

4500

4500

5 8 20 4 5 00 H 1 1 k w 12 0m 3

gul at in g ta nk

6 8 00 4 5 00 H 1 5 k w 1 60 m 3

S lr pl u s　 S l ur ry t an k

S lu rr y ta nk

4500

φ 6800

φ 6800

6 8 00 4 5 00 H 1 60 m3

D il ut io n　 w at er ta n k

φ 4850φ 4850

4 8 50 3 0 50 H 　 　 　 5 5 m3

r es h wa te r ta nk

φ 6 800

φ 5820

6273

Φ 6800

3050

Φ 5820

DESCRIPTION OF THE SLURRY TREATM’T EQUIPM’T DESCRIPTION OF THE SLURRY TREATM’T EQUIPM’T (MRM→BSH)(MRM→BSH)

（１）（１）　　 Soil DataSoil Data　　 　　 Max. for Primary Tr. Max. for Secondary Max. for Primary Tr. Max. for Secondary Tr.Tr. 　 　 Borg.NoBorg.No 　 　　　　　　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　　　　　 M.W.G(Inner) M.W.G(Inner) C.W.G(Inner)C.W.G(Inner) 　 　 　　 　 　 　　　　　　 ・・ Specific gravity Specific gravity 　 　 2.6502.650 　　　　 　　　　 2.652.6500 of soil of soil 　　 ・・ Water content Water content 　　　　 　　　　 10% 25.50% 10% 25.50% of groundof ground ・・ Specific weight Specific weight 　 　 2.3042.304t/mt/m33 　 　 　　　　　　　　　　　　　　　　　　　　　　　 　 　　　　　　　　　　　　　　　　　　　　　　 2.3042.304t/mt/m33

・・ Gravel Gravel 　 　 　　 　 　 40.00% 6.00% 40.00% 6.00% 　　　　 ・・ Sand Sand 　　 　　　 　　 　　　 40.00% 40.00% 40.00% 40.00% 　　　　 ・・ Silt, clay Silt, clay 　 　 20.00% 54.00% 20.00% 54.00% ・・ TotalTotal 　　 　　　 　　 　　　 100.00%100.00% 　　　 　　　 100.100.00%00%

DESCRIPTION OF THE SLURRY TREATM’T EQUIPM’T DESCRIPTION OF THE SLURRY TREATM’T EQUIPM’T (MRM→BSH)(MRM→BSH)

（（ 22 ））　　 Input DataInput Data　　　　　　　　・　・　 Excavation DiameterExcavation Diameter ・・・・・・ ・・・・・・ 6720mm6720mm　　 ・　　　 ・　 Length of 1RLength of 1R ・・・・・・・・・・・・・・・・・・　　　　　　　　　　　　　　　　 1400mm1400mm　 　 　 　 　・　 　 　 　 　・ Excavation speedExcavation speed ・・・・・・・ ・・・・・・・ 33 ｃｃ

ｍｍ //minmin ・　・　 Excavation timeExcavation time ・・・・・・・ ・・・・・・・

46.6746.67min/Rmin/R　 　 ・　　 　 ・　 Quantity of slurry suppliedQuantity of slurry supplied ・・・・ ・・・・ 5.945.94 ｍｍ

３３ //minmin　　　　・　　　　　・　 Quantity of slurry dischargedQuantity of slurry discharged ・・ ・・ 7.007.00 ｍｍ

３３ //minmin

・ ・ Working hoursWorking hours　　　　 　　　　 Primary treatmentPrimary treatment ・・・・・・ ・・・・・・ 2020h/dayh/day Secondary treatmentSecondary treatment ・・・・　 ・・・・　 2020h/dayh/day　 ・ 　 ・ Progress per dayProgress per day ・・・・・・・・　 ・・・・・・・・　 99R/dayR/day　　　 ・ 　　　 ・ Excavation cycleExcavation cycle ・・・・・・・・ ・・・・・・・・ 133.33133.33min/Rmin/R　　　　

DESCRIPTION OF THE SLURRY TREATM’T EQUIPM’T DESCRIPTION OF THE SLURRY TREATM’T EQUIPM’T (MRM→BSH)(MRM→BSH)

（（ 33 ）） Output DataOutput Data　　　　　　　　　　　　　　　　　　　　 Inner OuterInner Outer　・ 　・ Amount of soilAmount of soil from Primary Tr. from Primary Tr. ・・・・・・・ ・・・・・・・ 4082140821mm3 3 42612m42612m33

　・ 　・ Amount of soilAmount of soil　 　 　 　　 　 　 　 from Secondary Tr.from Secondary Tr. ・・・・・ 　　・・・・・ 　　 1385613856mm3 3 15611m15611m33

　・ 　・ Amount of waterAmount of water　 　　　　 　　　 to be dischargedto be discharged ・・・・・・ 　・・・・・・ 　 1176511765mm3 3 　 　　 　 13966m13966m33

　・　・ Major devices requiredMajor devices required Gravel separatorGravel separator 　 　 　・・・・・・・　 　 　・・・・・・・ 1set x 2lines = 2sets1set x 2lines = 2sets Sand separatorSand separator 　　　 ・・・・・・ 　　　 ・・・・・・ 2sets x 2lines = 4sets2sets x 2lines = 4sets　 　 Filter pressFilter press 　 ・・・・・・　 　　　 　　 　 ・・・・・・　 　　　 　　 2sets2sets

LAYOUT OF SLURRY TREATMENT EQUIPMENTLAYOUT OF SLURRY TREATMENT EQUIPMENT

Engine

Generator

WashBay

MALE

ENTRANCE

MAIN

FEMALE

18K18K

9K

12K12K

12K

12K

9K

9K

9K9K

9K

9K

9K12K

9K12K

12K

DN

Toi l et MALE

F EMALE

UP

PAN TRY

U P

Toilet

SWSWSW SWSW

SW

SWSW SW SWSW SWSW SW

SW

Cont rolroom

Substation

Gat e

Surpl us　Soi l 　&　 Mat er i alSt ock　 Yard

Mat er ial　 St orage

Toi l et

Fuel　Tank

Ent r ance

Cant

een

Car　 Park　 (20)

Si l t　 Trap

Access 　Door

Si l t 　Tr ap

Si l t　 Trap

SH

SWSW

SWSW

SW

SW

SW

SW

SWSW

SW

SWSW

SWSW

SW

SW

LTA　Car　Park

(13)

GuardHouse

LTAOff i ce

Gate

Cont ractorOf fi ce

LTA

LTA

Ref use　 Bin

1 22 2

1013

253

7

Hoa r di ng

G r av er l 　 s ep ar a t or１ ２ Ｓ Ｌ Ｈ - 154 2( Ⅱ )

３ R egu l at i ng 　 t ank ２ φ 58 20× 45 00H× 11k W　 　 　 12 0m3４ S ur p l us 　 s l ur r y　 t an k １ φ 68 00× 45 00H× 15k W　 　 　 16 0m3

５ C oag ul a nt 　 s t or a ge　 t an k ３ φ 23 60× 26 60H　 　 　 10 m3

６ S l ur r y　 t an k １ φ 68 00× 45 00H× 15k W　 　 　 16 0m3

７ F i l t er e d　 wat er 　 t an k ２ 1 . 0m3

８ Hi g h　 dens i t y　 s l ur r y　 s t or age　 t ank １ φ 23 50× 30 50H× 2. 2 kW　 　 　 1 3m3９ C l ay 　 mi xi n g　 t an k １ φ 15 00× 21 60H× 3. 7 kW　 　 　 3 m3

10 CMC　 mi x i ng 　 t ank １ φ 15 00× 21 60H× 1. 5 kW　 　 　 3 m3

11 D i l u t i o n　 wat er 　 t an k １ φ 68 00× 45 00H　 　 　 16 0m3

12 F r es h　 wat e r 　 t an k １ φ 48 50× 30 50H　 　 　 55 m314 Was t e　 wat e r 　 t r e at i ng　 equ i pment １ 3 0　 m3/ h r

15 P H　 c ont r ol 　 e qui pme nt １ 3 0　 m3/ h r

16 F i l t er 　 pr e ss ２ S FPS - 65 150

17 C ent er 　 con t r ol 　 pan el １

（ Lo w　 h ead 　 s cr e en) 1 500 W× 420 0L× Ⅱ s t age × 2 2kW

２ S and 　 se par at or（ Vi br a t i o n　 scr een ) ４ Ｓ Ｇ Ｓ - 153 6( Ⅱ ) 　 Ｍ Ｄ - 6× 9

1 500 W× 360 0L× Ⅱ s t age × 2 2kW

14 15

12

11

４６

５

３

２ ２ ２ ２１１

17

1 6

16

7

1 4

910

8

３

Inn er Outer

2 1

35m× 7m× 4. 5mH=1102. 5m3

（ Ｂ 線 ）（ Ａ 線 ）

1 122 2

30

10

21 913 5

3

17

15

19

72524

3

2

LAYOUT OF SLURRY TREATMENT EQUIPMENTLAYOUT OF SLURRY TREATMENT EQUIPMENT

TRANSPORTATION AND ERECTION PLAN TRANSPORTATION AND ERECTION PLAN OF SLURRY TREATMENT EQUIPMENTOF SLURRY TREATMENT EQUIPMENT

2004 2005

No ITEM 7 8 9 10 11 12 1 2 3

1 TRANSPORTATION

2 ARRIVAL　AT　SITE

3 ERECTION

4 COMMISSIONING

5 　EXCAVATION

ENVIRONMENTAL MEASURESENVIRONMENTAL MEASURESAGAINST NOISE AND VIBRATIONAGAINST NOISE AND VIBRATION

・ ・ NOISENOISE

Noise generating equipment includes;Noise generating equipment includes;　　　　　　　　　　　　　　　　　　　　・ ・ Gravel separatorsGravel separators　　　　　　　　　　　　　　　　　　　　・ ・ Sand separatorsSand separators　　　　　　　　　　　　　　　　　　　　・ ・ High pressure slurry pumpsHigh pressure slurry pumps

Result of noise emission simulation indicatesResult of noise emission simulation indicates that the noise level at the neighboring facilities that the noise level at the neighboring facilities are below noise limits.are below noise limits.

　 　

・ ・ VIBRATION VIBRATION Vibration generating equipment includes;Vibration generating equipment includes;　　　　　　　　　　　　　　　　　　　　・ ・ Gravel separatorsGravel separators 　　 ・ 　　 ・ Sand separatorsSand separators 　　 As environmental measures;As environmental measures;　　　　　　　　　　　　　　　　　　　　・ ・ Foundations have such mass as to cope Foundations have such mass as to cope with the transmitted vibration.with the transmitted vibration. 　　　　　　　　　　　　　　　　　　　　・ ・ Vibration isolating Vibration isolating common beds are common beds are provided for theprovided for the gravel separators gravel separators and sand separators.and sand separators.