DESIGN MANUAL

Preparation of Datasheet

for Water TreatmentSEM 9522E

REV. : 0

DATE : 2006. 8. 23PAGE 2 OF 68

ContentsPage1PURPOSE AND MAKING METHOD

1.1 Purpose

1.2Supplementary Article

1.3Making Method

2.RAW WATER TREATMENT

2.1General Description

2.2Scope Definition

2.3Design Considerations

2.4Performance Guarantee Vendor Shall Guarantee the Following Performance.

2.5.Utility Conditions

2.6Battery Limit Conditions

2.7Remarks

2.8 Attachment

2.9Raw water treatment package making guide

3DIMINERALIZED WATER

3.1General Description

3.2Scope Definition

3.3Design Consideration

3.4Performance Guarantee

3.5Battery Limit Condition

3.6Attachment

3.7Demineralized Water System Making Guide

4POTABLE WATER PACKAGE

4.1General Description

4.2Scope Definition

4.3Design Considerations

4.4Flow Scheme

4.5Remarks

4.6Attachment

4.7Potable Water Making Guide

5REVISION HISTORY

1PURPOSE AND MAKING METHOD1.1 PurposeThis guide has sample data sheet about skill option that is required to make raw water treatment, potable water treatment, demineralized water treatment data sheet. it provide design base about each skill option.1.2Supplementary ArticleMajor equipment and capacity should be entered on a base of data accumulated in job. data about chemicals and basic equipment is followed up by contact with vendor or gathering data.1.3Making MethodSerial numbers is given about changeable articles by water condition and job characteristic, design base and application range is indicated in making guide.2.RAW WATER TREATMENT* Raw Water Treatment PackageThis data sheet defines the minimum technical requirements for the raw water pretreatment facilities. Vendor shall carefully study and verify those requirements in this data sheet and shall execute related works.2.1General DescriptionRaw water treatment facilities shall treat raw water to produce filtered water and to supply it to users in the plant as plant water and to water treatment facilities as raw feed water and to cooling water system as make-up.These Facilities Consists Of The Following Units.- Clarifier unit- Sand filter unit- Sludge dewatering unit- Chemical injection unit2.1.1Clarifier UnitRaw water will be transferred from Sam-Bong lake and Dae-Ho lake via 23 km pipeline and be received in the raw water pond located in the east side of utility center, which will have the capacity of 150,000 m3. raw water will be pumped up from the raw water pond to the clarifier unit to reduce the turbidity with injection of coagulants and coagulant aids. Ph is adjusted by injecting NaOH solution in order to reduce organic matter, chlorine shall be also injected. The clarified water shall be feed to the sand filter unit.2.1.2 Sand Filter UnitThe overflow from the clarifier shall be transferred to the sand filters by gravity flow for removal of small amount of remaining suspended materials. The sand filter unit shall be equipped with water backwash and air backwash systems. The filtered water shall be collected in the intermediate water basin and pumped to the filtered water tank. Backwash waste water shall be collected in the recovered water pit to be recycled to the raw water feed line. Filtered water will be used as plant water, cooling water make-up and RO feed water.2.1.3Sludge Dewatering UnitThe sludge removed from the bottom of the clarifier shall be thickened and stored in the sludge chamber. The thickened sludge is pumped up to the sludge dewatering equipment and mixed with polyelectrolyte. Dewatered sludge cake shall be loaded to truck and the separated water shall be returned to the raw water feed line through the recovered water pit.2.2Scope DefinitionThe plant shall include the following equipments, but those shall be regard as typical. Vendor shall check raw and treated water quality, and supply further equipments if necessary to meet design conditions.2.2.1Clarifier Unit 2.2.2Sludge Dewatering Unit for details, refer to equipment2.2.3Sand Filter Unit

list as attached #2

2.2.4Chemical Injection Unit2.3Design Considerations2.3.1Design Codes and Standards Specification for This Project.(1) Design of the facilities shall be done according to engineering specification for this project.(2) If there are no applicable standards or code, suitable additional standards shall be adopted upon owner's approval.2.3.2Design Basis1)Design Capacity

2)Inlet ConditionsRefer to attached # 1 for the specifications of raw water.3)Outlet ConditionsThe required specifications of clarified water after clarifier and filtered water after sand filter are as follows.- Clarified Water: SS ...less than 10 mg/l- Filtered Water: SS ...less than 2 mg/lPh ...6 - 8.2Cod ...less than 10 mg/l4)Effluent SpecificationsSolid content in the sludge cake: min 15 %2.3.3Specifications for the Units1)Clarifier Unit(1) This unit is considered to have four trains with each train havingThe capacity of 520 m3/hrTreated water shall have SS less than 10 mg/l..(2) Clarification shall be accomplished in the slurry recirculation type clarifier with a slow moving de sludge scraper.(3) To reduce the water turbidity, poly aluminum chloride (PAC) is used as a coagulants.(4) If polyelectrolyte as flocaid is required in flocculation, edible polymer aid permitted by Korean authorities shall be used.(5) Sodium hypo-chloride (NaOCl) shall be used for chlorination.(6) All equipments except for chemical storage tanks, injection system including pumps shall be suitable for outdoor installations.(7) Sludge removal shall be automatically controlled for intermittent operation.(8) Inlet water to the clarifier unit shall be controlled by an automatic control valve.(9) An integrating flow meter shall be provided on the inlet water line to the clarifier unit with controls to proportion chemical feeds to inlet flow.

(10) Clarifier is constructed as a concrete, the internal of clarifier is composed of sludge agitator and mixing chamber, sludge scraper to remove solid state sludge.2)Sludge Dewatering Unit(1) Sludge discharged from the clarifiers shall be dewatered to minimum 15% in solids with injection of cationic polyelectrolyte (PETR). Coagulation tank with mixer shall be provided, if necessary.(2) One train of belt press type sludge dewatering equipment shall be provided and shall have a sufficient capacity based on 8 hrs per day intermittent operation.(3) All facilities for removal and truck loading of dewatered sludge cake shall also provide.(4) Sludge chamber shall have the capacity of one day operation.(5) A dissolving tank shall be provided for PETR with a mixer and an auto feeder. The dissolved PETR shall be introduced to the PETR day tank by gravity flow.(6) All equipment except for chemical storage tanks, injection pumps and sludge dewatering equipment shall be suitable for outdoor installation.3)Sand Filter Unit(1) Multiple filters shall be provided to allow continuous operation at full system design capacity with one unit out of service.(2) Gravity type sand filter shall be provided. The filter shall be capable of being operated manually and automatically. Back wash shall be initiated either by push button, timer or high differential pressure signal.(3) The minimum run length shall be 24 hours per filter.(4) The volume of the recovered water pit shall be more than the amount of water from one filter backwash. The capacity of the recovery water recycling pumps shall be decided to pump up the backwash waste water during normal backing interval.(5) Interlocking system shall be applied in order to prevent simultaneous backwashing.(6) All equipments shall be suitable for outdoor installation.(7) An integrating-indicating flow meter shall be installed on each outlet line of plant water and cooling water make-up.(8) Turbidity meter shall be installed on the outlet of the intermediate water pump.4)Chemical Injection Unit(1) Separate chemical feeding systems shall be provided for coagulants, coagulant aids, naoc1, and NaOH solution.(2) The chemical feeding systems shall be sized to the 7 days capacity at design flow rate.(3) Agitators shall be motor driven with shaft and impeller materials suitable for chemical mixed.(4) Chemical storage tank and pump materials shall be suitable for the chemicals.2.3.4Instrumentation and Control System.Automatic control system shall be applied where process values are kept constant, or where frequent manipulation would otherwise be required, local control panel with plc shall be installed in the local control room. Control of the facilities shall be done with this local control panel. In addition to the local control panel, the following monitoring function shall be supplied from plc through communication line to DCS which will be installed in the central control room.- Operation and Regeneration Status of the Sand Filters- Turbidity Indicator- Tank and Vessel Indicators- Alarms2.4Performance Guarantee Vendor Shall Guarantee the Following Performance.

2.4.1Product Capacity and Quality(1) Clarifier- Capacity : 520 m3/hr/train - SS : Less than 10 mg/l (2) Sand filter- Capacity : 300 m3/hr/train (exclude backwash loss)- SS : Less than 2mg/l- COD : Less than 10mg/l2.4.2Utility and Chemical Consumption(1) Chemicals- PAC ------------------------ * kg/day- NaOCl ------------------------ * kg/day- Polyelacrolyte --------------- * kg/day- Others (if req'd) ------------- * kg/day

(2) Power ------------------------ * kwh/day

2.4.3 Effluent

Dewatered Sludge Cake

Quantity ---------------------- Max. * kg/d

Solid Content -------------- Min. 15 %

2.4.4Operation Cycle

Filter - Operation Time: Min 24 hr/cycle - Backwash Time : Max. 1 hr/cycle2.5.Utility ConditionsRefer to Attached # 4.2.6Battery Limit Conditions PRESS TEMP

(kg/cm2) ( )

INCOMING

RAW WATER 2.0 AMBIENT

LP STEAM 3.5 195

INST. AIR 7.0 AMBIENT

OUTGOING

PLANT WATER 5.0 AMBIENT

CW MAKEUP 3.0 AMBIENT

2.7Remarks(1) Vendor to State Blanks Marked with * (2) Vendor is encouraged to bid an alternative proposal which is economical and reliable under the conditions that his system is able to meet the design requirements.2.8 AttachmentProcess flow diagram and equipment list attached herewith are for reference.(1) Specification of Raw Water.(2) Equipment List(3) Utility Conditions(4) Process Flow DiagramAttachment #1 specifications of raw water - a pollution level measurement -1.NORTH KOREA RIVER

2. SOUTH KOREA LIVER

3. HAN LIVER DOWNSTREAM

4. NACKDONG RIVER

5. KEUM RIVER

6. YEONGSAN LIVER

7. SUMZIN RIVER

8. MANKYEONG RIVER

EACH PROJECT WATER SPECIFICATION

1. SPC NO.2 WATER SPECIFICATION (ULSAN)

* : AVERAGE

2. EA CORPORATION. BACO3 WATER SPECIFICATION (ONSAN)KORCHARACTERISTICSUNIT/ppm ASRAW

WATERFILTERED

WATERPROCESS

WATER

CONDUCTIVITY

PH ( 25 )

TOTAL HARDNESS

Ca++

Mg++

(Na+), (K+)

NH4+

M-ALKALINITY

Cl-

NO3-

(SO4)-

SiO2

FREE CO2

TURBIDITY

COD(Mn)

TOTAL CATION

TOTAL ANION

COLORs/cm

-

CaCO3

CaCO3

CaCO3

CaCO3

CaCO3

CaCO3

Cl-

NO3-

(SO4)-

SiO2

CO2

DEGREE

O2

CaCO3

CaCO3

DEGREE380

6.0~7.0

70.0

41.2

28.8

97.3

3.3

45.0

12.4

2.6

45.5

7.0

7.0

10 MAX

4.2

170.6

170.7

7.0420

6.5~8.5

70.0

41.2

28.8

105.5

3.3

45.0

14.1

2.6

45.5

7.0

7.0

< 1

3.5

178.9

180.0

-6.5~8.5

5.0

170.5

3.3

45.0

14.1

2.6

45.5

7.0

7.0

< 1

3.5

178.9

180.0

-

3. SAMSUNG ELECTRONICS SEMI-CONDUCTOR WATER SPECIFICATION (KIHEUNG)CHARACTERISTICSUNIT16 K64 K256 K1 M

RESISTIVITY

PARTICULES

TOC

BACTERIA

SiO2

DO.cm AT 25no/ppm

no/ppb

ppm-15

0.2

200 ~ 300

1

1

15 ~ 16

0.2 ~ 0.1

50 ~ 150

0.5 ~ 1

0.5 ~ 1

20 ~ 30

0.1 ~ 0.517 ~ 18

0.1

20 ~ 50

0.05 ~ 0.2

0.02 ~ 0.2

10

0.117 ~ 18

0.1 ~ 0.05

0.05

0.01

10

3. DAEGU ARSENIC ACID WATER SPECIFICATION (DAEGU)CHARACTERISTICSUNIT/ppm ASRAW

WATERFILTERED

WATER

CONDUCTIVITY

PH ( 25 )

TOTAL HARDNESS

Ca++

Mg++

(Na+), (K+)

M-ALKALINITY

Cl-

HCO3-

(SO4)-

SiO2

FeMn

TURBIDITY

evaporation residue

TOTAL CATION

TOTAL ANION/cm

-

CaCO3

CaCO3

CaCO3

CaCO3

CaCO3

Cl-

HCO3

SO4-

SiO2

Fe

Mn

DEGREE

CaCO3

CaCO3200

6 ~ 8

55

45

32

4.8

10.7

67.2

7.0

100 ~ 120

7

50

10

0.05

0.05

1

50

5. EAST AREA S.M WATER SPECIFICATION (YEOCHUN)CHARACTERISTICSUNIT/ppm ASRAW

WATERFILTERED

WATER

CONDUCTIVITY

PH ( 25 )

TOTAL HARDNESS

Ca++

Mg++

(Na+), (K+)

Fe

M-ALKALINITY

Cl-

HCO3-

(SO4)-

SiO2

Mn

TURBIDITY

ACIDITY

TOTAL CATION

TOTAL ANION/cm

-

CaCO3

CaCO3

CaCO3

CaCO3

Fe

CaCO3Cl-HCO3-

(SO4)-CaCO3Mn

-

CaCO3CaCO3

CaCO37 ~ 7.5

30 ~ 40

30 ~ 43

1.4 ~ 2.0

6 ~ 11

2 MAX

6 ~ 8

6. S.G.C COMBINAT WATER SPECIFICATION (SEOSAN)CHARACTERISTICSUNIT/ppm ASRAW

WATERFILTERED

WATERCOOLING

WATERDEMI

WATERPOLISHED

WATERBOILER

FEED WATER

CONDUCTIVITY

PH ( 25 )

Ca++

Mg+

(Na+), (K+)

NH4+

M-ALKALINITY

P-ALKALINITY

Cl-

HCO3-

CO3-

(SO4)-

Fe

SILICA

TOTAL DISOLVED SOL.

*ORGANIC MATTER

(PO4)3-

HYDRAZINE

TURBIDITY

HEAVY METALS

TOTAL CATION

TOTAL ANION

O2s/cm

-

CaCO3

CaCO3

CaCO3

CaCO3

Cl-

HCO3-

CO3-

(SO4)-

Fe

SiO2

PO4

DEGREE

7.7~8.2

104.5

174.9

696.1

1.2

119.5

128.3

36.4

130.5

1

5.5

1203.3

13

50

975.5

7.0~8.2

5

12

7.0~8.0

177

194

1118

50

213

36.7

162.2

16.5

2100

20

10

10

10

0.2

0.2

0.02

0.2

8.5~9.0

0.02

0.02

0.01 MIN

** 0.005

0.007MAX

NOTE * AS KMnO4 CONSUMED ** AS COPPER7. HANJU WATER SPECIFICATION (ULSAN)CHARACTERISTICSUNIT/ppm ASRAW

WATERFILTERED

WATERDEMI

WATER

CONDUCTIVITY

PH ( 25 )

(Na+), (K+)

NH4+

Mn++

CATION HARDNESS

TOTAL HARDNESS

M-ALKALINITY

Cl-

(SO4)-

NO3-

NO2-

Fe

SiO2

TURBIDITY

TOTAL CATION

TOTAL ANION

FMA

TDS

ABS

COD/cm

-

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm

ppm190 ~ 210

6.5 ~ 8.5

10 ~ 36.8

1

44

68 ~ 70

40 ~45

17 ~17.6

22.6 ~ 29.8

6.1 ~ 6.5

0.2 ~ 1.0

7.2

MAX 10.0

82.8 ~ 98

104.2 ~ 112

35 ~ 45

62 ~ 93

0.1 ~ 0.11

4.5 ~ 8.3190 ~ 210

6.5 ~ 8.5

10 ~ 36.8

1

44

68 ~ 70

40 ~45

17 ~17.6

22.6 ~ 29.8

6.1 ~ 6.5

0.2 ~ 1.0

7.2

< 2

82.8 ~ 98

104.2 ~ 112

35 ~ 45

62 ~ 93

0.1 ~ 0.11

4.5 ~ 8.3< 10

0

< 0.1

8. KEUMHO Y.D.R WATER SPECIFICATION (YEOCHUN)CHARACTERISTICSUNIT/ppm ASRAW

WATERGROUND

WATERPROCESS

WATERCOOLING

WATERPOTABLE

WATER

CONDUCTIVITY

PH ( 25 )

Ca++

Mg++

(Na+), (K+)M-ALKALINITY

P-ALKALINITY

Cl-

HCO3-

CO3-

(SO4)-

Fe

SILICA

FREE CO2

TOTAL DISOLVED SOL.

TOTAL CATION

TOTAL ANION

*ORGANIC MATTER(COD)

(PO4)-

TURBIDITY (S.S)

BACTERIA (COLIFORM ORGANISM)s/cm

-

CaCO3

CaCO3

CaCO3

Cl-

HCO3-

CO3-

(SO4)-

Fe

SiO2

CO2

PO4

MPN/100ml MAX6.5~8.0

50

20

60

30

3.7

10.1

19.8

41.3

0.3

30

3

260

130

2

-

30

100

6.6~6.6

10~11

29~30

16.6~15.9

9~10

0.066~0.08

6.8~6.0

1.1~1.2

0.4~0.48

74

540 **

6.5~8.0

50

20

60

30

3.7

10.1

19.8

49.4

0.3

30

3

268.5

130

2

-

2

100

1500~1800

6.5~8.0

15-~175

60~70

11.2~13.1

148~173

90~105

780~910

15~20

6~7

5.8~8.6

200

0.3

10

100

9. YUGONG P.X SEPERATION WATER SPECIFICATIONCHARACTERISTICSUNIT/ppm ASCIRCULATING

COOLING WATERMAKE-UP

COOLING WATER

CONDUCTIVITY

PH ( 25 )

TOTAL HARDNESS

Ca++

Mg++TOTAL-ALKALINITY

P-ALKALINITY

Cl-SILICA

TURBIDITY

DISSOLVED SOLIDS/cm

-

CaCO3

CaCO3

CaCO3

CaCO3

Cl-

SiO2DEGREE

7 ~ 8

3007 ~ 7.5

30 ~ 40

20 ~ 27

10 ~ 13

30 ~ 43

1.4 ~ 1.9

6 ~ 11

1 ~ 2

10. MAIN PLANT WATER SPECIFICATION (NAJU)CHARACTERISTICSUNIT/ppm ASPROCESS

WATERCOOLING

WATER

CONDUCTIVITY

HARDNESS

PH ( 25 )

(Na+), (K+)

M-ALKALINITY

Cl-SO4-

NO3-

SIO2

CO2

Fe

NH3

EZ

P2O5

TOTAL CATION

TOTAL ANION

TURBIDITY (S.S)/cm

dH

-

meq/l AS Na

meq/l

ppm

meq/l

ppm

ppm

ppm

ppm

ppm

ppm

meq/l

meq/l

ppm70 ~ 210

2.3 ~ 3.7

6.0 ~ 7.1

0.76

0.68 ~ 1.06

14.2 ~ 52.1

0.73

3

5 ~ 7.2

10

0.36 ~ 0.89

0 ~4.1

1.65

2.0

9.6 ~ 76.6143 ~ 320

4.1 ~ 7.8

0.49 ~ 1.02

30.7 ~ 101.6

0.17 ~ 0.37

TRACE

1.3 ~ 2.2

4.6 ~ 7.1

7.7 ~ 11.5

11. KEUMHO SBR WATER SPECIFICATION (YEOCHUN)CHARATERISTICSUNIT/ppm ASRAW WATER

CONDUCTIVITY

PH

Ca++

Mg++

(Na+)+(K+)

Cl-

(SO4)=

HCO3-

NO3-

M-ALKALINITY

TOTAL CATION

TOTAL ANION

TOTAL HARDNESS

TURBIDITY

COD Mn

SiO2S/cm

-

CaCO3

CaCO3

CaCO3

CaCO3

CaCO3

CaCO3

CaCO3

CaCO3

CaCO3

CaCO3

CaCO3

DEGREE

CaCO3

CaCO3MAX 120

6.5 - 7.5

MAX 10

MAX 10

MAX 70

100

100

MAX 10

2

5

10

Attachment #2 Equipment list for raw water treatment packageITEM NO.SERVICEREQ'D NO.SPECIFICATIONREMARKS

FD-0100A-D

AD-0100

GD-0100A-C

FB-0100

FB-0103

GA-0100A,B

GA-0101A,B

FB-0104

GA-0104A,B

AD-0102

FD-0102

GA-0102A,B

GA-0103A,BCLARIFIER

FLOCCULATION CHAMBER

FLOCCULATOR

PAC TANK

NaOCl TANK

PAC PUMP

NaOCl PUMP

NaOH TANK

NaOH PUMP

SLUDGE CHAMBER

SLUDGE WATERING

EQUIPMENT

SLUDGE FEED PUMP

POLYELECTROLYTE PUMP4

1

3

1

1

1+1

1+1

1

1+1

1

1

1+1

1+1SLURRY RECIRCULATION

TYPE 520 m3/hr per TRAIN

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDORONLY INCLINED

TYPE CLARIFIER

ONLY INCLINED

TYPE CLARIFIER

ITEM NO.SERVICEREQ'D NO.SPECIFICATIONREMARKS

FA-0101

GD-0102

FD-0103A-H

AD-0103

AD-0104

GA-0104A,B

GA-0105A,B

GA-0106A,B

GB-0101A,BPOLYELECTROLYTE

DISSOLVING TANK

POLYELECTROLYTE

TANK MIXER

SAND FILTER

INTERMEDIATE WATER

BASIN

RECOVERED WATER

PIT

INTERMEDIATE

WATER PUMP

BACKWASH PUMP

RECOVERED WATER

RECYCLE PUMP

BACKWASH BLOWER1

1

7+1

1

1

1+1

1+1

1+1

1+1BY VENDOR

BY VENDOR

GRAVITY TYPE

300 m3/hr per TRAIN

BACKWASH CYCLE :

ONCE A DAY/TRAIN

520 m3

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDOR

BY VENDOR

2.9Raw water treatment package making guide2.9.1General description2.9.1.1Clarifier unit1) Raw Water Source: It indicates namely river, sea, pond etc.2) Raw water pond capacity : Generally it is designed on a basis of 2 day (48 hrs) capacity. If fire fighting water is stored together, the fire fighting water capacity should be added and designed.3) Coagulants: The natural water has suspended matters charging negative, they exist safely, but if positive charged coagulants is added, they are neutralized electrically, particles collide each other, and precipitation is created easily.4) Coagulant aid: It is used to promote floc. reaction and to reduce coagulant amount used at the early start up, the rainy season, drought. 5) NaOH: Generally a coagulant injection increased acidity, so NaOH should be added to neutralize. 6) Chlorine: Chlorination is executed, because organic material disturb clarification.2.9.1.2Sand filter unit1) Gravity flow: Gravity flow is applied in gravity type, but if we use press. Type sand, we must set up clarified water pit and pumping.2) Use of filtered water should be filled up.2.9.1.3Sludge Dewatering UnitIt could be dealt with independent vendor package. 2.9.2Design Considerations2.9.2.1Design Basis1)Capacity - Intermediate water basin: 10 -20 min. holding. Of nor. Pump capacity- Filtered water tank: 1 hr - 1 day above by user.(sgc: 2 hr, ss bp : 18 hr)2)Outlet Conditions- De-muddy ability of clarifier Water muddy degree Treated water muddy degree 20 - 100 5 below 100 above 10 below* The muddy degree of water should be 10 ppm ~ 1000 ppm, the change of muddy degree should be below 100 ppm/hr, the change of water temp. should be 0.5 - 1 per hour. The rising flow rate could get to 60 mm/min., but suitable range is 32 - 42 mm/min. in the light of density. - Sand filter filtering ability Muddy degree of water Muddy degree of water disposed 20 - 30 2 below- pH : The acidity is increased by each coagulant injected, if amount injected is bulk, caustic soda should be injected to neutralize for adequate cohesion ph condition. (Table 2)TABLE 1. The coagulant and PH of proper cohesion

coagulantpH rangestrengthweakness

Al2 (SO4) 18H2O5.5 - 8.0cohesion is speedy and general.Proper alkali degree is needed.

Fe2 (SO4)35.5 - 11The cohesion pH range is wide and creation of FLOC, cohesion precipitating time is short.-

FeSO4 7H2O8.5 - 11FLOC is heavy and has fast precipitating time. Although PH is high, FLOC is not dissolved.More alkali is needed and discoloration is impossible.

Ca(OH)2-It is used to PH control agent and precipitation of FLOC is better than Na2CO3.-

Na2CO3-It is used to PH control agent.-

FeCl3 6H2O8.5 - 11It has same property with Fe2 (SO4)3.Corrosive property is strong.

Al(OH)mCln

(PAC)wideIt is not affected by pH, and cohesion effect is good.-

TABLE 2. Effect of water quality that receive by coagulant and amount of alkali that is needed to neutralize a coagulant 1 ppm.

coagulantThe change of water quality when coagulant 1 ppm is added.amount of alkali that is needed to neutralize a coagulant 1 ppm.

alkali degree decrease

(ppm AS

CaCO3)SO4 increase

(ppm AS

CaCO3)CO2 increase from heavy carbonate

(ppm AS

CaCO3)CO2 increase from carbonate

(ppm AS

CaCO3)Na2CO3

(99%)Na2CO3(93%)Na2CO3(45%)

Al2 (SO4)3

18H2O

FeSO47H2O

Fe2(SO4)30.45

0.36

0.680.45

0.36

0.670.40

0.32

0.600.20

0.16

0.300.48

0.16

0.300.36

0.29

0.540.80

0.64

1.21

2.9.2.3Specifications for the Units1)Clarifier Unit(1) Clarifier type : there are slurry recirculation type, slurry blanket type, inclined plate type in clarifier, slurry recirculation type is mainly used. The cohesion effect of rotating slurry and sully blanket is similar, inclined blanket is more efficient than others, but early investment cost is expensive. if quality of water is good, DYNA-sand filter can be used because it has double function of clarifier and sand filter. When muddy degree is below 30 and clarifier setting space is narrow, the coagulant is injected by line.(refer to flow scheme as attached #3).(2) Coagulants: the coagulants that is used in cohesion precipitation are Alh2So4 , feso3, PAC (poly aluminum chloride), feso3(i), aluminum soda, PAC. PAC is not affected with ph and it has good cohesion effect. (fig.1, fig.2).(3) Coagulant aids: it is used to promote floc. Creation and to enhance precipitating property by strengthening mechanical strength and specific gravity. it is divided by organic and inorganic matters. The organic matter is used to cohesion agent because cohesion effect of those is good by minimum injection and those are not affected by ph. (4) NaOCl : The aim of NaOCl is to oxidize NH3, COD, BOD, nitrous acid and to remove taste, smell. So precipitation is created easily.* The effect of chlorine residue to ion exchange resin : if chlorine disposal is exceed in proper amount, smell of chlorine is excessive, equipment is corroded , so ion exchange resin is oxidized.Fig. 1 Coagulant dosing effectsOn Water of Low Turbidity

On Water of Low Turbidity

FIG. 2 Coagulant Dosing Effects

Dosage of Coagulant (ppm as Alum)2)Sand Filter Unit(1) Filter type: ther are gravity type and pressure type, pressure type is used for small space. (Table 4).(2) Backwash: the aim of backwashing is to remove impurities in bed. TABLE 3. Backwashing Type and Method

TYPEDESCRIPTION

1. WASHING

WITH WATER- BACKWASHING FLOW RATE : 25 - 90 m/hr

(15 - 25 % EXPANSION OF THE FILTER BED)

- 3 - 10 MIN. REQUIRED FOR COMPLETE WASHING.

* AFTER BACKWASHING, WATER SHOULD BE FILTERED TO WASTE

UNTIL THE TURBIDITY DROPS TO AN ACCEPTABLE VALUE.

THIS MAY REQUIRE FROM 2 - 20 MIN. DEPENDING ON

PRETREAMENT AND TYPE OF FILTER.

2. WASHING WITH AIR

AND WATER IN

SUCCESSION- THIS APPLIES TO FILTER BEDS COMPOSED OF FINE SAND OR

LOW DENSITY MATERIALS.

- AIR IS USUALLY APPLIED FOR 3 OR 4 MIN. BEFORE THE BACK

WASHING BEGIN. AIR FLOW RATE : 600 - 960 m/hr

- A BACKWASH OF WATER WITH A SUFFICIENTLY HIGH FLOW RATE

TO BRING ABOUT THE EXPANSION OF THE FILTERING MATERIALS

ENABLES THE IMPURITIES DETACHED DURING THE FIRST STAGE

TO BE REMOVED FROM THE BED AND CARRIED AWAY.

3. SIMULTANEOUS

AIR AND WATER

WASHING WITHOUT

EXPANSION- USED IN THE SINGLE MEDIUM UNSTRATIFIED FILTER BED.

- AIR AND WASH WATER ARE APPLIED SIMULTANEOUSLY FOR

SEVERAL MINUTES.

- AIR FLOW RATE : 50 m/hr

- WASH WATER RATE : MIN. 5 m/hr

- CONTINUE THE BACKWASH AT A CONSTANT RATE OF FLOW

UNTIL THE DISCHARGED WATER RUNS CLEAR.

- FLOW RATE : 12 - 20 m/hr

2.9.3Performance Guaranty2.9.3.1Utility and Chemical Consumption(1) Chemical Consumption For Clarification- Alum or Iron SulfateMuddy degreea coagulant managementa coagulant + (POLY-ELCTROLYTE)management

50PPM below50PPM25PPM

50~200PP75PPM50PPM

200PPM above100PPM75PPM

- PAC: See the table 5

- PolyelectrolytesPolymer 0.1 % solution on a Dry Basis is used and 0.1 ~ 0.5 ppm is injected.

- NaOCl: A mount of injection should have 0.1~0.2 ppm concentration in outlet.

TABLE 5. CHEMICAL DOSING RATE OF CLARIFIER OPERATION

CHEMICALCHEMICAL

CONC.(wt%)SPECIFIC

GRAVITYDOSING RATE

(max ppm)INJECTION POINT

NaOH251.2710INLET LINE

NaOCl102.495INLET LINE

PAC1.01.1910MIXING CHAMBER

FLOC AID0.11.02MIXING CHAMBER

2.9.3.2Operation CycleBack Wash Time of Filter: Usually 10 ~ 15 min3DIMINERALIZED WATER

Dimineralized water systemThis data sheet defines the minimum technical requirement for the water treatment facility. Vendor shall carefully study and verify those requirements in this sheet and shall execute all necessary design3.1General DescriptionDimineralized water treatment facilities shall treat filtered water fed from raw water treatment facilities to produce demineralized water. This demineralized system shall be composed of two trains, each having a production capacity of 500 m3/day3.1.1Raw UnitRaw unit shall be adopted as pretreatment for make-up cooling water to increase concentration number of cooling water system and pre demineralization to reduce the load of following demineralized unit.Filtered water shall be fed to the safety filter through the raw feed water heater and then to the raw unit chemical shall be injected to control ph and to protect RO membrane from scaling, slim formation and hydrolysis RO treated water shall be decarbonated by the decarbonator and then stored in the raw permeated water tank and fed to the demineralizer unit.3.1.2Demineralizer UnitRaw treated water shall be fed to the demineralizer unit which will be 2-bed, 3-tower type consisting oxidation tower, de gasfier, anion tower demineralized water shall be sent to demineralized water tank3.1.3Regeneration and Neutralization UnitSulfuric acid and caustic soda shall be used to regenerate the ion exchanger of demineralized unit regeneration waste water shall be neutralized and shall be discharged to the waste water treatment facilities by pumps together with the raw brine3.2Scope DefinitionThe unit shall be include following equipment(1) Raw unit

: 2 train(2) Demineralizer unit

: 2 train(3) Regeneration and neutralization unit: 1 eaFurther detail equipment are shown in the equipment list attached as #13.3Design ConsiderationDesign codes and standards(1) Design of the facilities shall be done according to engineering specification for this project(2) If there is no applicable standard or code, suitable additional standard shall be adopted upon owner's approval3.3.1Design Basis(1)Design CapacityRaw unit :2 210m3/hr/trainDemineralizer :2 220m3/hr/trainRO permeate tank :1 1500 m3Demineralizer water tank :1 1500 m3(2)Inlet conditionThe specification of the raw water and the filtered water refer to attachment table 1 and 2(3)Outlet ConditionThe required specification of RO permeated water and demineralized water are as follows- Raw permeated waterCl : less then 35 mg/l as cl- Demineralized waterConductivity: less then 10 micro s/cmSiO2 : less then 0.2 mg/l(4)Chemicals and Utility ConditionsRefer to attachment #2(5)Effluent Specification- neutralized waste waterpH : 5~93.3.2WinterizingThe minimum design temperature (dry bulb temp) shall be -14.3c resin towerRaw unit and chemical injection system shall be installed indoors for outdoor installation of equipments, piping, and instrument material, winterization shall be considered.3.3.3Instrumentation and Control SystemAutomatic control system shall be applied where process variables are to kept constant or where frequent manipulation otherwise be required local control panel with plc shall be installed in the local control panel control of facilities shall be done with this local control panel in addition to local control panel, following monitoring function shall be supplied to DCS which will be installed in the central control room- Operation and regeneration status of the demineralizer

- Analyzer such as conductivity meters and silica meter

- Tank level indicator

- Flow indicators

- Alarms3.3.4Raw Unit(1) Two train of raw module set shall be provided shall have capacity of 210m3/hr(2) Raw module shall have the following performance after three years operation

- Recovery ratio: more then 85 %

- Chloride ion : less then 35mg/l in permeated water(3) RO feed water heater-1 shall be provided to keep the water temperature from 20c to 30c using the hot cooling water as heating water as heating medium RO feed water heater-ll shall be provided for back of raw feed water heater-l by using low pressure steam a temperature control valve shall be provided on each by-pass of the RO feed water heater(4) Multiple safety filter shall be provided to allow continuous operation at full system design capacity with one unit out of service which shall be 10 micron meter polyethylene cartridge type filter replacement cycle of cartridge shall be more then 2 weeks(5) Necessity of polishing filter shall be considered to meet the fouling index (FI) or silt density index (SDI) requirement of membrane supplier(6) Chemical cleaning system for RO membrane shall be provided(7) RO brine shall be discharged to the waste water treatment facilities together with neutralized regeneration waste water from demineralized unit(8) Automatic start/stop sequence shall be provided for RO unit(9) Chemical tank shall have 7 day operation(10) RO unit except the RO permeated tank shall be installed indoors(11) De carbonate shall be provided for stripping CO2 gas in RO permeated water a pH meter shall be provided for de carbonate water

3.3.5Demineralizer Unit(1) Two train of demineralizer unit shall be provided and each train shall have a full capacity of normal required quantity when one train will be in generation another train will be started in operation if pollutable condensate will be divert to train, two train shall be operated(2) The demineralizer shall be regenerated using counter regeneration system to save chemical consumption(3) Demineralizer except for the demineralized water tank shall be installed indoors(4) Regeneration shall be conducted automatically once a day per train(5) Automatic sequence control system by PLC shall be applied for the demineralizer(6) In order to detect the endpoint of service run following indicate recorder with alarm and conductivity recorder with alarm shall be installed on the outlet line of the demineralizer(7) Conductivity recorder shall be installed on the inlet line of the demineralizer(8) Demineralized water to demineralized water tank shall be controlled by a flow control valve and level indicating alarm shall be installed in the demineralized water tank(9) Resin trap shall be provided on the outlet of the demineralizer to prevent resin from entering into downstream equipment(10) An integrating/indicating flow meter shall be installed on the outlet of the demineralizer to downstream(11) Vendor shall verify the necessity of the degasfier considering co2 removal in the RO permeate water by the decarbonator of RO unit(12) When the pressure of the demineralized water pump becomes low, the stand-by pump shall start automatically

3.3.6Regeneration and Neutralization Unit(1) The volume of the neutralization pit shall be such that the amount of water from one regeneration of the demineralizer(2) Interlocking system shall be applied in order to prevent simultaneous regeneration(3) PH value of the waste water shall be adjusted from 5 to 9(4) 10 % caustic soda will be fed by piping from outside but an unloading connection for tank lorry shall also be provided for caustic soda tank3.4Performance GuaranteeVendor shall guarantee the following performance articles marked "*" shall be specified by vendor3.4.1Product Capacity and Quality(1)ROCapacity : 210 m3/hr/trainQuality : cl less then 35 mg/l as cl(2)DemineralizerCapacity : 220 m3/trainExcluding regeneration loss for demineralizer and mixed bed polisher

Quality : conductivity less then 10 micro s/cm less then 0.2 mg/l3.4.2Utility and Chemical Consumption(1)ChemicalsNaCl *kg/dayH2SO4 *kg/dayNaOH *kg/dayNaHSO3 *kg/dayShmp (sodium hexametaphospate) *kg/dayNaCl (if required) *kg/day(2)Power *kw/day3.4.3Effluent(1)Neutralized Regeneration Waste Water demineralizerQuantity Max *m3/cycle pH 5 - 9 SS Max *mg/l

(2) RO brineQuantity Max *m3/hr pH *3.4.4Operation Cycle(1)Demineralizer Operation cycle Max 24 hour/cycle

Regeneration time Max * hour/cycle(2)PolisherOperation cycle Max 336hour/cycle

Regeneration time Max * hour/cycle

3.4.5Attrition Loss for Resins(1)DemineralizerCation resin *% resin

Anion resin *% resin3.4.6Life of RO Membrane * years3.5Battery Limit ConditionPressure and temperature at the battery limit of the facility are summarized as below INCOMINGPRESSURE

Kg/cm2 GTEMPERATURE

MEDIUM PRESSURE STEAM17.0280

LOW PRESSURE STEAM3.5195

INSTRUMENT AIR7.0AMBIENT

PLANT AIR7.0AMBIENT

PLANT WATER5.0AMBIENT

COOLING WATER(SUPPLY)4.032

COOLING WATER(HOT)

( TO RO FEED WATER HEATER)2.042

10 % CAUSTIC SODA14.643

Note 1) Temperature of processing condensate and steam condensate shall be finalized at the detailed engineering stageOUTGOING

PORABLE WATER3.0AMBIENT

MAKE-UP COOLING WATERATMAMBIENT

DEMINERALIZED WATER6.0AMBIENT

COOLING WATER RETURN2.042

COOLING WATER

(FROM RO FEED WATER HEATER)1.032

LOW PRESSURE STEAM3.5195

WASTE WATER

(NEUTRALIZED REGENERATION WASTE RO BRINE)3.0AMBIENT

Note 2) Temperature of polished water shall be finalized at the detail engineering stage3.6AttachmentProcess flow diagram (d-u2b-1) and equipment list are attached here with for reference TABLE 1 SPECIFICATION OF RAW WATER

CALCIUMmg/l AS CaCO3104.5

MAGNESIUMmg/l AS CaCO3174.9

SODIUMmg/l AS CaCO3654.8

POTASSIUMmg/l AS CaCO341.3

AMMONIUMmg/l AS CaCO31.2

M-ALKALINITYmg/l AS CaCO3119.5

CHLORIDEmg/l AS CaCO3723.1

SULPHATEmg/l AS CaCO3135.9

NITRATEmg/l AS CaCO32.4

TOTAL IRONmg/l AS Fe1.0

SILICAmg/l AS SiO25.5

COD Mnmg/l13

TURBIDITYDEGREE1203.3

TDSmg/l7.7 - 8.2

pH

TABLE 2 SPECIFICATION OF FILTERED WATER

SSmg/l2 MAX

COD Mnmg/l10 MAX

TABLE 3 SPECIFICATION OF STEAM CONDENSATEQUANTITY

NORMAL124.5 T/H2 max

MAXIMUN168.5 T/H10 max

TEMPERATURE

NORMAL90

MAXIMUN100

QUALITY

PH VALUE8 - 9

CONDUCTIVITYmicro S/cm20 max

SILICAmg/l as SiO20.5 max

IRONmg/ l as Fe0.05 max

COPPERmg/ l as Cu0.005 max

SUSPENDED SOLIDmg/ l as1 max

TURBIDITYNTU1 max

OIL AND GREASEnil

COD Mnmg/ l1 max

Note 3) Quantity and temperature shall be finalized at the detailed engineering stage TABLE 4 SPECIFICATION OF VACCUM STEAM CONDENSATE

QUANTITY

NORMAL

- WINTER 86.5 T/HNOTE 4)

- SUMMER108.7 T/H

MAXIMUN150 T/H

TEMPERATURE 49

QUALITYSAME AS ABOVE

NOTE 4) QUANTITY SHALL BE FINALIZED AT THE DETAIL ENGINEERING STAGE

TABLE 5 SPECIFICATION OF SM PLANT CONDENSATE

QUALITY

NORMAL49 T/H

MAXIMUN74 T/H

TEMPERATURE40 - 90

Femg/l0.02 MAX

CONDUCTIVITYmicro S/cm10 MAX

QUALITY

PH8.3 - 8.6

HARDNESSmg/l AS CaCO30.1 MAX

OILNIL

ATTACHMENT #1 EQUIPMENT LIST FOR DEMINERALIZED WATER TREATMENT PACKAGE

WATER TREATMENT FACILITY (PACKAGE DEALING UNIT)ITEM NOSERVICEREQ'D NOSPECIFICATIONREMARK

RO UNIT

CP-2201RO UNIT55000m3/day PER TRAIN

DA-2201DECARBONATOR1BY VENDOR

EA-2201RO FEED WATER HEATER l5BY VENDOR

EA-2202RO FEED WATER HEATER ll5BY VENDOR

FB-2201RO PERMEATED WATER TANK1BY VENDORCS+EPOXY LINING

FD-2201SAFETY FILTER5+1BY VENDOR

GA-2201RO TRANSFER PUMP5+1BY VENDOR

GA-2202RO HIGH PRESSURE PUMP5+1BY VENDOR

GA-2203DECARBONATE WATER PUMP1+1BY VENDOR

GA-2204CHEMICAL CLEANING PUMP1BY VENDOR

GA-2205H2SO4 PUMP5+1BY VENDOR

GA-2206NaHSO3 PUMP5+1BY VENDOR

GA-2207SHMP PUMP5+1BY VENDOR

GB-2201DECARBONATION BLOWER1+1BY VENDOR

FA-2201DECARBONATED WATER TANK1BY VENDOR

FA-2202NaHSO3 TANK1BY VENDOR

FA-2203SHMO TANK1BY VENDOR

FA-2204CHEMICAL CLEANING TANK1BY VENDOR

GD-2201CHEMICAL CLEANING TANK MIXER1BY VENDOR

GD-2202SHMP TANK MIXER1BY VENDOR

WATER TREATMENT FACILITY (PACKAGE DEALING UNIT)

ITEM NOSERVICEREQ'D NOSPECIFICATIONREMARK

DEMINERALIZER UNIT

DA-2301CATION TOWER1+1BY VENDOR

DA-2302DEGASFIER 1+1BY VENDOR

DA-2303ANION TOWER 1+1BY VENDOR

FB-2301DEMINERALIZED WATER TANK1BY VENDORCS+EPOXY LINING

FA-2301DEGASFIER WATER TANK 1+1BY VENDOR

GA-2301CATION TOWER FEED PUMP1+2BY VENDOR

GA-2302DEGASFIER WATER PUMP1+2BY VENDOR

GA-2303DEMINERALIZED WATER PUMP1+1BY VENDOR

GB-2301DEGASSING BLOWER 1+1BY VENDOR

REGENERATION AND NEUTRALIZATION UNIT

FB-2304H2SO4 STORAGE TANK1BY VENDOR

FB-2305NaOH STORAGE PUMP1 BY VENDOR

FA-2302H2SO4 MEASURING TANK1 BY VENDOR

FA-2303NaOH MEASURING TANK 1BY VENDOR

FA-2304RESIN MIXING AIR TANK 1BY VENDOR

AD-2301NEUTRALIZATION PIT1BY VENDOR

GB-2302MIXING BLWER1+1BY VENDOR

FA-2204CHEMICAL CLEANING TANK1BY VENDOR

GA-2307WASTE WATER PUMP 1+1BY VENDOR

GD-2202REGENERATION PUMP1+1BY VENDOR

3.7Demineralized Water System Making Guide3.7.1General Description3.7.1.1R/O UnitIt is composed of high pressure pump, module, a measuring instrument. main activity is to remove Nacl ,colloidal matter, organism, other organic matter in water. 90% of nacl is removed, life of ion exchanger resin is increased 10 times and regeneration of ion exchanger resin is reduced. so time and cost is reduced and discharging equipment disposal cost is reduced one-tenth.3.7.1.2Demineralizer Unit (2 B 3 T)This unit is used when many hco3- ion exist in water. this unit consume lower anion exchanger resin and NaOH than 2 bed 3 tower, because co2 is removed in de gasifier.3.7.1.3Regeneration and Neutralization UnitIt is the process that activates ion exchange resin by injecting regeneration agent. Sulfuric acid and caustic soda is diluted to fixed concentration (2~5%) by ejector or pump, they are injected at ion exchanger resin tower tail.3.7.2Design Considerations3.7.2.1R/O UnitSiO2 max. Content is 30 ppm, fe is 0.3 ppm, min is 0.1 ppm, cl2 is 1ppm in water. Membrane has ph permission range. If ph in water exceed permission range, ph should be controlled by chemical injection. If residue chlorine in r/o discharge water is in flowed to ion exchanger, purity of pure water is decreased. So, reductant (na2so3) should be injected.(1) Though same materials would be used, its capacity or effect is different by design method. There are large tube, plate & flame, spiral wound, hollow fine fiber type in module design. Packing density and water output per unit volume of hollow fine fiber are excellent but not applicable in Korea water condition, so spiral wound is mainly used in Korea.(2) Generally if temp. rise 1, pass rate by osmosis is increased 2%. Although high temp. Solution is very economical, but membrane has application range. If temp is different with application temp. (25) of membrane, it should be controlled by cooling tower or heater.(3) Generally, if numerical value should be controlled below 4.(4) If r/o equipment is operated for long time, scale and bacteria is created on the surface of membrane, so flow rate and reject rate is decreased. So, inorganic contamination should be cleaned by Na3PO4, NaOH, citric acid, organic contamination should be cleaned by triton x-100, 2na-edta, HCHO. (5) Vacuum degas method is used to remove oxygen in water. Material of tower is stainless, vacuum degree is 70cmhg - 76cmhg.3.7.2.2Demineralizer Unit(1)Counter-currentRegeneration method: -It consume lower regeneration agent than co-current and amount of waste water regenerated is low.(2) De gasifier Set Up- When HCO3- is high concentration in water(i) m-alkalinity + co 20 ppm as caco3

100 ppm as caco3 (by flour)(ii) HCO3- concentration 30% of total anion (flour) De gasifier should be set up.- The amount used of anion exchange resin is low and so,Naoh consumption is reduced. - 9095 % of CO2 is deleted.- In boiler water over 60 kg/cm2g boiler, vacuum decarbonator is used.- De gasfier can be used commonly in multi-train.3.7.2.3Regeneration and Neutralization Unit(1)Regeneration Water- Cation exchange resin: natural water use- Anion exchange resin: de-cationized water or pure water use.(2)Regeneration Chemicals- H2SO4 is best economical in cation exchange resin.H2SO4 : 15% solutionHCl : 10% solutionNa2SO4 : 5% solution- Anion exchanger resin caustic soda : 4% solution3.7.2.4Chemical Consumption(1)Chemical Consumption- Chemical concentration : 3.7 article- Countercurrent, parallel regeneration methodregeneration method counter-currentco-current

regeneration

Levelcation resin4060100

anion resin4060100

regeneration timeabout 2 hoursabout 4 hours

passing rate time

(m/hr)cation resin LV =20

LVmax =40 LV =20

LVmax =50

anion resin LV =10

LVmax =40 LV =10

LVmax =50

4POTABLE WATER PACKAGE4.1General DescriptionClarified and filtered water from the raw water treatment facilities (filtered water) is stored in the filtered water tank. Pump is installed for transferring feed water to the potable water unit. NaOCl solution is injected by metering pumps for chlorination and the concentration is controlled to maintain more than 0.2 ppm as free residual chlorine. Before chlorination, activated carbon filter is to be installed to remove mainly color and BOD.4.2Scope DefinitionThis specification should be regarded as typical. The potable water package will consist of the following major equipments.4.2.1Equipments(1) NaOCl storage tank : 1 ea(2) NaOCl injection pump : 2 ea(3) Line mixer : 1 ea(4) Activated carbon filter : 1 ea(5) Micro filter : 1 ea(6) Vent scrubber : 1 ea4.2.2Instrument, Electrical and Piping(1) All interconnecting piping, valves, instrumentation & control, electrical & instrument wiring within the package to be installed.(2) Local control panel & MCC panel.4.3Design Considerations4.3.1Design Conditions1) Capacity - flow rate, max : 6.3 m3/hr

, nor : 2.1 m3/hr2) Feed water conditionSource : filtered waterTemperature : 5-20Pressure - Inlet : 5.0 kg/cm2-g

- Outlet : 3.5 kg/cm2-g minWater quality : Refer to attached sheet #13) Chemical InjectionChemical : NaOCl solution (10% as Cl2)NaOCl : 0.5 - 1.0 mg/1 (Cycle water)Injection method : by metering pumpInjection mode : continuous4.3.2Equipment specifications1) Carbon FilterQuantity : 1 eaCOD removal- inlet : 2-5 ppm

- outlet : less than 1 ppmCarbon- volume : 0.08 kg-cod/kg-carbon(ref. figure)

- lifetime : *Service flow: 10 -25 m3/m2hr (ref. figure)Backwash- flow rate: lv =20 m/hr (ref. figure)

- Bed expansion: 50% (ref. figure)

- time

: 30 min(ref. figure)Const. mat'l: carbon steel (c.a. = 3mm)2) NaOCl storage tankQuantity: 1 eaHolding time: 14 days for normal consumptionVolume

: * m3Chemical: NaOCl solution (10 % as cl2)Const. mat'l: C.S + PVC or PE lining3) NaOCl injection pumpType

: diaphragmQuantity

: 2 eaCapacity

: *Material

- Diaphragm: teflon

- Head

: pvc

- Cylinder: sus 304Capacity control

- Manual stroke adjustment

- Range : 0 - 100%4) Micro-filterType

: cartridgeQuantity

: 2 ea (1 stand-by)Element fineness: 10 mMaterial

- Casing

: sus 304

- Element: sus 3045) Line mixer(1) Type

: static inline mixer(2) Quantity

: 1 ea(3) Material- Casing: sus 304

- Internal: sus 3046) Vent scrubber(1) Type

: water spray/packing(2) Gas to be treated: cl2 gas evolved above 30(3) Evolved gas- flow rate: *

- concentr'n: *(4) Treated gas- concentr'n: *(4) Material

- tower: pvc

- Packing: pvc

- Internal: pvc(5) Dimension

- tower dia

: *

- Tower height: *

- Bed height: *4.3.3Instrumentation, Piping, and Electrical(1) All interconnecting piping, valves, instrumentation and control, electrical and instrument wiring within the package to be included in contractor's scope.(2) Local control panel and MCC panel to be included.4.4Flow SchemeRefer to attached schematic flow diagram4.5Remarks(1) Vendor to state marked as *(2) Piping material: CS + PE or PVC lining with bronze valves(3) Cl2 evolution from the NaOCl storage tank shall be reduced enough to meet environmental regulations.(4) Vendor shall submit calculation basis for vent scrubber design if purchaser request to get governmental approval.(5) Residual cl2 analyzer with low alarm and recorder to be supplied.(6) Vendor shall submit deviation list for those items that do not follow the specifications described here.4.6Attachment#1. Raw water specification#2. Raw water specification (well water)#3. Flow schemeAttached #1. raw water specification====================================pH( 25 )

-

6.5-8.5Conductivity

s/cm

420Total hardness

ppm as caco370.0Ca++

ppm as caco341.2Mg++

ppm as caco328.8(Na+) + (K+)

ppm as caco3105.5NH4+

ppm as caco33.3m-alkalinity

ppm as caco345.0Cl-

ppm as caco379.3NO3-

ppm as caco38.3SO4-

ppm as caco347.4SiO2

ppm as sio27.0Free CO2

ppm as co27.0Turbidity

degree

less than 2COD(mn)

-

3.5Total cation

ppm as caco3178.9Total anion

ppm as caco3180.0Color

degree

-Attached #2. raw water specification (well water)=================================================pH ( 25 )

-

7.3Conductivity

s/cm

230Fe2+,3+

mg/