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2X300MW DEENBANDHU CHHOTU RAM THERMAL POWER PROJECT, YAMUNANAGARMANUAL OF DESCRIPTION & OPERATION FOR I & C FOR CONDENSATE POLISHING UNIT

CS09135-10-022X300MW DEENBANDHU CHHOTU RAM THERMAL POWER PROJECT YAMUNANAGAR INDIAMANUAL OF DESCRIPTION AND OPERATION

FOR I & C FOR CONDENSATE POLISHING UNITShanghai QUANHUA Automatic Control Engineering Technique Co., ltd1. I & C System description for Condensate Polishing UnitThe condensate polishing control system is based on the PLC program control. CPU of PLC and power supply are redundant. I/O module can be inserted and removed online.

1.1 Condensate Polishing Unit:The following are controlled in the condensate polishing unit:

4 sets of mixed bed system for unit 1 & 2

2 sets of chemical dosing system for unit 1 & 2

1 set of regeneration system

1 set of acidalkali & auxiliary system

Display 2 sets of steam & water analyzing system for unit 1 &2

1.2 Configuration of I & C

1.2.1 Panels installed in local control room

1.2.1.1 PLC system

There are six (6) sets of PLC panel, which are mainly Programmable Logic Controllers (PLCs). The PLC, type S7-414H is SIEMENS product. CPU, power supply and bus are configured redundantly. The I/O configuration is distributed by twelve ET-200 stations. Module numbers of each station is not more than 8. In each module there are no more than 32 points for digit module, 8 points for analog input module and 8 points for analog output module. The technical parameters for S7-414H PLC of SIEMENS as follow:

User Memory: 768KB

Register Memory: 768KB

Max. I/O: Digit I/O: 64000 points; analog I/O: 4096 points.

Coil of interior: 64000 points.

Working Temperature: 0-60 C

Storage Temperature: - 40-85 C

Humidity: 5-95%

Vibration: 3.5mm, 5-9Hz, 1.0g 8-150Hz.

Strike: 11Ms as 105g.

Standard: UL, CSA, FCC

The size of each PLC panel is 800 x 600 x 2200 (width x depth x height).

1.2.1.2 Power supply

1 set of power panel is set for control system. Power source used in other panel/control box as 240VAC and/or 24VDC /48VDC are supplied by power panel. Two-line power supply is supplied to power panel. Power supply is redundant. The size of power panel is 800 x 600 x 2200 (width x depth x height). More details at outline of control/board which Draw. No. is CS09135-00-07-00operator computer

Flow of CPP is showed on the MMI of operator computer. Various devices and pipes for condensate polishing plant showed on diagram are presented by variety of graphic symbols with pushbuttons and color lines. As device running or open, indicator lights to red. Device stop or closed, indicator lights to green. System alarm windows are display in the computer. Include mixed bed system of unit 1 & unit 2, regeneration system of unit 1 and 2. & sampling analyse system , feeding ammonia system .all control instrument is showed on the MMI of operator computer. Control, operation and supervision of parameters can be realized via the MMI of operator computer.1.2.2 Local solenoid box

A number of solenoid boxes are used to control all valves in condensate polishing plant. Control signals from PLC panel are sent to solenoid box in used for control solenoid. It is electric-pneumatic conversion box, all pneumatic valves in CPP are controlled by solenoid. Some pushbuttons are installed on box for manual control.

10 sets solenoid box are supplied as follows:

Solenoid box for No.1 mixed bed of unit 1

Solenoid box for No.2 mixed bed of unit 1

Solenoid box for pipeline valves of unit 1

Solenoid box for No.1 mixed bed of unit 2

Solenoid box for No.2 mixed bed of unit 2

Solenoid box for pipeline valves of unit 2

Solenoid box for resin separation vessel

Solenoid box for anion regeneration vessel

Solenoid box for cation regeneration & storage

Solenoid box for other valves of regeneration system1.2.3 Sample analyse panels & meters panels3 sets of Sample Analyse panels & meters panels are supplied as follows:

Sample analyse panels & meters panels of unit 1

Sample analyse panels & meters panels of unit 2

meters panels of regeneration system water sampling from No.1 mixed bed outlet and No.2 mixed bed outlet and coagulation outlet to Sample Analyse panel. Natrium analyzer/ conductivity analyzer/ SiO2 analyzer in it. The signal export to meters panels. Export date showing on the meters panels, and these measured results are sent to PLC panels with 4-20mA signal.1.2 Recycle water pump

The operation modes for pump include local control, remote control of manual and auto control with PLC. Manual control (local) is completed with pushbuttons and switches installed MCC. Manual control (remote) is completed with pushbuttons on MMI and the switches installed MCC must to remote. Auto control is completed by PLC. There is a local/remote changeover on MCC. As switched to local control, it is started and stopped when used pushbuttons. As switched to remote control of MCC and at manual state on MMI, recycle water pump is started or stopped with pushbuttons and switches on MMI. Control for CPP is switched to auto state, the recycle water pump is started and stopped automatically to depend on system control requirement. Auto control for recycle water pump is shown on list of control flow.

1.3 Regeneration water pump

The operation modes for regeneration water pump include local control, remote control with manual and auto control with PLC. Manual control (remote) is completed with pushbuttons on MMI and the switches installed MCC must to remote. Auto control is completed by PLC. There is a local/remote changeover on MCC As switched to local control, regeneration water pump is started and stopped used pushbuttons. As switched to remote control on MCC and switched to manual state on MMI, regeneration water pump is started or stopped with pushbuttons and switches on MMI. Control system is switched Auto State, the regeneration water pump is started and stopped automatically to depend on system control requirement. There are 2 sets regeneration water pumps, 1 set operate, 1 set spare and 2 sets pumps are interlocked. Auto control for regeneration water pump is shown on list of control follow.1.5 Roots blowers

The operation modes for roots blowers include local control, remote control with manual and auto control with PLC. Manual control (remote) is completed with pushbuttons on MMI and the switches installed MCC must to remote. Auto control is completed by PLC. There is a local/remote changeover on MCC. As switched to local control, roots blowers are started & stopped used pushbuttons and switch on the MCC. As switched to remote control on MCC and switched to manual state on MMI, it is started & stopped with pushbuttons on MMI. Control system is switched to auto state; it is started & stopped automatically to depend on system control requirement. There are tow sets roots blowers, blower A is operate blower & blower B is spare blower. Blowers A & B is interlocked. Auto control for roots blowers is shown on list of control flow.

2.4 Valves on mixed bed for CPP

There are 2 set mixed beds for each unit. Each mixed bed includes many valves as follow:

Inlet valve (10LDF71AA001/10LDF72AA001) (20LDF71AA001/20LDF72AA001)Outlet valve (10LDF71AA003/10LDF72AA003) (20LDF71AA003/20LDF72AA003)Boost valve (10LDF71AA002/10LDF72AA002) (20LDF71AA002/20LDF72AA002)Recycle valve (10LDF71AA004/10LDF72AA004) (20LDF71AA004/20LDF72AA004)Resin outlet valve (10LDF71AA005/10LDF72AA005) (20LDF71AA005/20LDF72AA005)Base intake valve (10LDF71AA006/10LDF72AA006) (20LDF71AA006/20LDF72AA006)Base influent valve (10LDF71AA007/10LDF72AA007) (20LDF71AA007/20LDF72AA007)Wash valve (10LDF71AA008/10LDF72AA008) (20LDF71AA008/20LDF72AA008)Resin Inlet valve (10LDF71AA009/10LDF72AA009) (20LDF71AA009/20LDF72AA009)Exhaust valve (10LDF71AA010/10LDF72AA010) (20LDF71AA010/20LDF72AA010)Outlet sample valve (10LDF71AA011/10LDF72AA011) (20LDF71AA011/20LDF72AA011)Outlet valve & Inlet valve are electric action valve and Outlet sample valve is solenoid. Other valves are pneumatic valves.

The operation modes for all valves include local control, remote control by manual and auto control with PLC.

Manual control (local/remote) is completed with pushbuttons and switches on MMI or/and local control box (solenoid box). This is a local/remote changeover on local control box for valves. As switched to local state, these valves are opened or closed with pushbuttons and switches on local control box. As switched to remote state and switched to manual state on MMI, it is opened or closed with pushbuttons and switches on MMI. Control for CPP is switched to auto state; it is controlled automatically to depend on system control requirement. Auto control for valves is shown on list of control flow.

2.5 Pipe valves for CPP

Pipe valves for each unit are included as following:

Recycle pump outlet valve (10LDF73AA001/20LDF73AA001)

Wash king valve (10LDF75AA001/20LDF75AA001)

Resin outlet king valve (10LDF77AA001/20LDF77AA001)

Resin inlet king valve (10LDF78AA001/20LDF78AA001)

Overflow valve A(10LDF79AA001/20LDF79AA001)Overflow valve B(10LDF80AA001/20LDF80AA001)Regeneration bypass valve (10LDF74AA001/20LDF74AA001)

Alarm bypass valve (10LDF74AA002/20LDF74AA002)

Outlet sample valve (10LDF74AA003/20LDF74AA003)

Regeneration bypass valve & Alarm bypass valve are electric action valve and Outlet sample valve is solenoid. Other valves are pneumatic valves.

The operation modes for all valves include local control, remote control by manual and auto control with PLC.

Manual control (local/remote) is completed with pushbuttons and switches on MMI or/and local control box (solenoid box). This is a local/remote changeover on local control box for valves. As switched to local state, these valves are opened or closed with pushbuttons and switches on local control box. As switched to remote state and switched to manual state on MMI, it is opened or closed with pushbuttons and switches on MMI. Control for CPP is switched to auto state; it is controlled automatically to depend on system control requirement. Auto control for valves is shown on list of control flow.

2.6 Valves for resin separation vessel

Valves for resin separation vessel are included as following:

Resin inlet valve (00LDP74AA001)Transport influent valve (00LDP74AA002)Wash influent valve (00LDP74AA003)Back wash drain valve (00LDP74AA004)Back wash influent valve A (00LDP74AA005)

Intake valve (00LDP74AA006)Back wash influent valve B (00LDP74AA007)

Overflow valve (00LDP74AA008)

Base influent valve (00LDP74AA009)

Drain valve (00LDP74AA010)

Exhaust valve (00LDP74AA011)

Anion export valve (00LDP75AA001)

Cation export valve (00LDP76AA001)

Cation pipe wash valve (00LDP77AA001)

All valves are pneumatic valves.

The operation modes for all valves include local control, remote control by manual and auto control with PLC.

Manual control (local/remote) is completed with pushbuttons and switches on MMI or/and local control box (solenoid box). This is a local/remote changeover on local control box for valves. As switched to local state, these valves are opened or closed with pushbuttons and switches on local control box. As switched to remote state and switched to manual state on MMI, it is opened or closed with pushbuttons and switches on MMI. Control for CPP is switched to auto state; it is controlled automatically to depend on system control requirement. Auto control for valves is shown on list of control flow.

2.7 Anion separation vessel

Valves for anion separation vessel are included as following:

Wash influent valve (00LDP78AA001)

Back wash drain valve (00LDP78AA002)Back wash influent valve (00LDP78AA003)

Intake valve (00LDP78AA004)

Back influent valve (00LDP78AA005)

Overflow valve (00LDP78AA006)

Exhaust valve (00LDP78AA007)

Sample valve (00LDP78AA008)

Alkali inlet valve (00LDP78AA009))

Resin export valve (00LDP79AA001)Cation vessel inlet valve (00LDP80AA001)All valves are pneumatic valves except for sample valve is solenoid.

The operation modes for all valves include local control, remote control by manual and auto control with PLC.

Manual control (local/remote) is completed with pushbuttons and switches on MMI or/and local control box (solenoid box). This is a local/remote changeover on local control box for valves. As switched to local state, these valves are opened or closed with pushbuttons and switches on local control box. As switched to remote state and switched to manual state on MMI, it is opened or closed with pushbuttons and switches on MMI. Control for CPP is switched to auto state; it is controlled automatically to depend on system control requirement. Auto control for valves is shown on list of control flow.

2.8 Valves for cation regeneration vessel

Valves are included as following:

Wash influent valve (00LDP81AA001)Back wash drain valve (00LDP81AA002)Back wash influent valve (00LDP81AA003)

Intake valve (00LDP81AA004)

Back influent valve (00LDP81AA005)Exhaust valve (00LDP81AA006)Overflow valve B (00LDP81AA007)

Overflow valve A (00LDP81AA008)

Acid inlet valve (00LDP81AA009)

Sample valve (00LDP81AA010)

Resin export valve (00LDP82AA001)

All valves are pneumatic valves except for sample valve is solenoid.

The operation modes for all valves include local control, remote control by manual and auto control with PLC.

Manual control (local/remote) is completed with pushbuttons and switches on MMI or/and local control box (solenoid box). This is a local/remote changeover on local control box for valves. As switched to local state, these valves are opened or closed with pushbuttons and switches on local control box. As switched to remote state and switched to manual state on MMI, it is opened or closed with pushbuttons and switches on MMI. Control for CPP is switched to auto state, it is controlled automatically to depend on system control requirement. Auto control for valves is shown on list of control flow.

2.9 Valves of acid/caustic and others for regeneration system

It is included as following:

Inlet valve of acid tank (00LDP94AA001)

Outlet valve of acid pump (00LDP70AA001)

Inlet valve of acid tank (00LDP70AA002)

Inlet valve of alkali tank (00LDP93AA001)

Outlet valve of alkali pump (00LDP93AA002)

Inlet valve of alkali tank (00LDP80AA001)

Inlet valve of hot water tank (00LDP20AA011)

Cycle valve of wash pump (00LDP86AA001)

Air king tank (00LDP83AA001))

Outlet valve of blower (00LDP91AA001)

Exhaust valve of blower (00LDP92AA001)

Cooling valve of blower (00LDP88AA001)

Connect valve of unit 1 (00LDP71AA001)

Connect valve of unit 2 (00LDP71AA002)

All valves are pneumatic valves.

The operation modes for all valves include local control, remote control by manual and auto control with PLC.

Manual control (local/remote) is completed with pushbuttons and switches on MMI or/and local control box (solenoid box). This is a local/remote changeover on local control box for valves. As switched to local state, these valves are opened or closed with pushbuttons and switches on local control box. As switched to remote state and switched to manual state on MMI, it is opened or closed with pushbuttons and switches on MMI. Control for CPP is switched to auto state, it is controlled automatically to depend on system control requirement. Auto control for valves is shown on list of control flow.

3 Settings for system parameters

Settings for system parameter according to list of operation parameters are completed on MMI with mouse and keyboard. System parameters include operation and alarm parameters.

4. Parameters display for system operation

All Parameters & control date can showing on MMI. The dates include setting Parameters/alarm dates/running dates. Operator can see abort all these date for 100 days.3.0 Program running

PLC control all valves and pumps as following sequence (e.g. with No.1 mixed bed of unit 1)

No.PROCESS DESCRIPTIONRUNNING EQUIPMENTTIMES(S)REMARK

Mixed bed running

1Pressure riseBoost valve (71AA002)60

2RecycleRecycle pump outlet valve73AA001Inlet valve71AA001Recycle valve71AA004Sample valve71AA011Recycle pump300Sample valve open 200 s late

3runningInlet valve71AA001Outlet valve71AA003

Mixed bed DISABLE/SPARE

0Open bypass valveRegeneration bypass valve74AA001[Alarm bypass valve74AA002--When all mixed bed no use]30

1Exit5

2DecompressExhaust valve71AA01060

3End

Resin transport to separate vessel

1Exit5

2DecompressExhaust valve71AA01060

3Resin transport to separate vessel with waterWash king valve75AA001Resin outlet king valve77AA001,Resin outlet valve71AA005Base influent valve71AA007,Resin inlet valve of separate vessel74AA001Drain valve of separate vessel74AA010Connect valve of unit 171AA001Wash pumpA/B)1020

4Water overflowOverflow valve B80AA001Exhaust valve71AA010Base influent valve71AA007Overflow valve of separate vessel74AA008Exhaust valve of separate vessel74AA011600First open (71AA010),(74AA011) 10sto (74 AA008)(80 AA001) stop drain

5Resin transport to separate vessel with airResin outlet king valve77AA001Resin outlet valve71AA005Base intake valve71AA006Overflow valve of separate vessel74AA008Resin inlet valve of separate vessel 74AA001Exhaust valve of separate vessel74AA011Connect valve of unit 171AA001300

6Mixed bed exhaust Exhaust valve71AA01060

7Mixed bed waterWash king valve75AA001Exhaust valve71AA010Base influent valve71AA007Wash pumpA/B900To (71AA010) stop drain

8Wash resin pipelineWash king valve75AA001Resin outlet king valve77AA001Resin outlet valve71AA005Base influent valve71AA007Resin inlet valve of separate vessel74AA001Drain valve of separate vessel74AA010Connect valve of unit 171AA001Wash pumpA/B)300

9End

Resin import from cation regeneration vessel

1Resin import from cation regeneration vessel with waterOverflow valve A79AA001Resin inlet king valve78AA001Resin inlet valve71AA009Base influent valve71AA007Connect valve of unit 171AA001Wash influent valve of cation regeneration vessel81AA001Base influent valve of cation regeneration vessel81AA005Resin outlet valve of cation regeneration vessel82AA001Wash pumpA/B)600

2Water overflowOverflow valve A79AA001Exhaust valve71AA010Base influent valve71AA007Exhaust valve of cation regeneration vessel81AA006Overflow valve B of cation regeneration vessel81AA0071500To(79AA001)&(81AA007) stop drain

3Resin import from cation regeneration vessel with airOverflow valve A79AA001Resin inlet king valve 78AA001Exhaust valve71AA010Resin inlet valve71AA009Base influent valve71AA007Connect valve of unit 171AA001Intake valve of cation regeneration vessel81AA004Resin outlet valve of cation regeneration vessel82AA001Air king valve83AA001300

4cation regeneration vessel exhaustExhaust valve of cation regeneration vessel81AA00660

5cation regeneration vessel waterWash influent valve of cation regeneration vessel81AA001Exhaust valve of cation regeneration vessel81AA006Wash pumpA/B)600

6Wash resin pipelineOverflow A79AA001Resin inlet king valve78AA001Exhaust valve71AA010Resin inlet valve71AA009Base influent valve71AA007Connect valve of unit 171AA001Wash influent valve of cation regeneration vessel81AA001Resin outlet valve of cation regeneration vessel82AA001Wash pumpA/B)300

7Mixed bed overflowOverflow valve A79AA001Exhaust valve71AA010Base influent valve71AA0071500

8Resin mixedExhaust valve71AA010Base intake valve71AA006180

9Quiescence180

10Water overflowWash king valve75AA001Exhaust valve71AA010wash valve71AA008Wash pumpA/B)900

11Pressure riseBoost valve71AA002)60

12RecycleRecycle pump outlet valve73AA001Inlet valve71AA001Recycle valve71AA004Sample valve71AA011Recycle pump88AA001300

13Spare

Resin separate

1Water overflow Exhaust valve of separate vessel74AA011Overflow valve of separate vessel74AA008exhaust valve of blower91AA001roots blowerA/B,cooling valve of blower600

2Scrub away with airExhaust valve of separate vessel74AA011Intake valve of separate vessel74AA006Outlet valve of blower92AA001roots blowerA/B,cooling valve of blower120

3WashDrain valve of separate vessel 74AA010Wash valve of separate vessel74AA003exhaust valve of blower91AA001Wash pumpA/Broots blowerA/B,cooling valve of blower180Form 1 to 3 repeat 20 times

4Water overflowExhaust valve of separate vessel 74AA011Wash valve of separate vessel74AA003Wash pumpA/B900

5Back wash step IBack wash drain valve of separate vessel74AA004Back wash influent valve of separate vessel A74AA005Wash pumpA/B300

6Back wash step IIBack wash drain valve of separate vessel74AA004Back wash influent valve of separate vessel A74AA005Back wash influent valve of separate vessel B74AA007Wash pumpA/B900

7Back wash step IIIBack wash drain valve of separate vessel74AA004Back wash influent valve of separate vessel A74AA005Wash pumpA/B300

8Sedimentation180

9Transport cation resinTransport influent valve of separate vessel74AA002Base influent valve of separate vessel74AA009Cation outlet valve of separate vessel76AA001Resin inlet valve of cation vessel80AA001Overflow valve B of cation vessel81AA007Wash pumpA/B600Stop when ultrasonic switch on

10Wash resin pipelineCation pipe wash valve of separate vessel77AA001Resin inlet valve of cation vessel80AA001Overflow valve B of cation vessel81AA007Wash pumpA/B180

11Back wash step Back wash drain valve of separate vessel74AA004Back wash influent valve of separate vessel A74AA005Wash pumpA/B300

12Sedimentation180

13Transport anion resinTransport influent valve of separate vessel74AA002Base influent valve of separate vessel74AA009Anion outlet valve of separate vessel75AA001Overflow valve of anion vessel78AA006Wash pumpA/B600

14End

Anion resin regeneration

1Back washBack wash drain valve of anion vessel78AA002Back wash influent valve of anion vessel78AA003Wash pumpA/B180

2Sedimentation180

3Feeding alkali to

Anion resin regeneration vesselOverflow valve of anion vessel78AA006Alkali inlet valve of anion vessel78AA009Wash pump cycle valve 86AA001Alkali pump outlet valve 93AA002Inlet valve of alkali jetboat80AA002Inlet valve of hot water tank20AA011control valve of hot water20AA103Wash pumpA/BAlkali pumpA/B2400

4Feeding alkali to

Anion resin regeneration vesselOverflow valve of anion vessel78AA006Alkali inlet valve of anion vessel78AA009Wash pump cycle valve 86AA001Alkali pump outlet valve 93AA002Inlet valve of alkali jetboat80AA002Inlet valve of hot water tank20AA011control valve of hot water20AA103Wash pumpA/BAlkali pumpA/B1500

5Anion replacementOverflow valve of anion vessel78AA006Alkali inlet valve of anion vessel78AA009Wash pump cycle valve 86AA001Inlet valve of alkali jetboat80AA002Inlet valve of hot water tank20AA011control valve of hot water20AA103Wash pumpA/B3000

6WashWash influent valve of anion vessel78AA001Overflow valve of anion vessel78AA006Sample valve of anion vessel78AA008Wash pumpA/B1800Open sample valve 20min late

7End

Cation resin regeneration

1Back washBack wash drain valve of cation vessel81AA002Back wash influent valve of cation vessel81AA003Wash pumpA/B180

2Sedimentation180

3Feeding acid to

cation resin regeneration vesselOverflow valve B of cation vessel81AA007Acid inlet valve of cation vessel81AA009Wash pump cycle valve 86AA001Inlet valve of acid jetboat70AA002Wash pumpA/B2400

4cation replacementOverflow valve B of cation vessel81AA007Acid inlet valve of cation vessel81AA009Wash pump cycle valve 86AA001Acid pump outlet valve 70AA001Inlet valve of acid jetboat70AA002Wash pumpA/BAcid pumpA/B2100

5cation replacementOverflow valve B of cation vessel81AA007Acid inlet valve of cation vessel81AA009Wash pumpcycle valve 86AA001Acid pumpoutlet valve 70AA001Inlet valve of acid jetboat70AA002Wash pumpA/BAcid pumpA/B1000

6WashWash influent valve of cation vessel81AA001Overflow valve B of cation vessel81AA007Sample valve of cation vessel81AA011Wash pumpA/B1800Open sample valve 20min late

7End

Mixed wash

1Transport resin from anion regeneration vessel to cation regeneration vessel with waterWash influent valve of anion vessel78AA001Base influent valve of anion vessel78AA005Resin outlet valve of anion vessel79AA001Cation vessel inlet valve of anion vessel80AA001Overflow valve A of cation vessel81AA008Wash pumpcycle valve 86AA001Wash pumpA/B360

2Anion regeneration vessel overflow / Cation regeneration vessel overflowOverflow valve of anion vessel78AA006Exhaust valve of anion vessel78AA007Exhaust valve of cation vessel81AA006Overflow valve A of cation vessel81AA008900

3Transport resin from anion regeneration vessel to cation regeneration vessel with airIntake valve of anion vessel78AA004Resin outlet valve of anion vessel79AA001Cation vessel inlet valve of anion vessel80AA001Exhaust valve of cation vessel81AA006Overflow valve A of cation vessel81AA008Air king valve83AA001300

4anion regeneration vessel exhaustExhaust valve of anion vessel78AA00760

5anion regeneration vessel waterWash influent valve of anion vessel78AA001Exhaust valve of anion vessel78AA007Wash pumpA/B600

6Wash anion resin pipelineCation pipe wash valve of separate vessel77AA001Cation vessel inlet valve of anion vessel80AA001Exhaust valve of cation vessel81AA006Overflow valve A of cation vessel81AA008Wash pumpcycle valve 86AA001Wash pumpA/B180

7Cation regeneration vessel overflowExhaust valve of cation vessel81AA006Overflow valve A of cation vessel81AA008Exhaust valve of blowerl92AA001Roots blowerA/B300

8Resin mixed in Cation regeneration vessel Exhaust valve of cation vessel81AA006Intake valve of cation vessel81AA004 Outlet valve of blower91AA001Roots blowerA/B300

9Cation regeneration vessel waterWash influent valve of cation vessel81AA001Exhaust valve of cation vessel81AA006Wash pumpA/B600

10Cation regeneration vessel washWash influent valve of cation vessel81AA001Overflow valve B of cation vessel81AA007Sample valve of cation vessel81AA011Wash pumpA/B600When Conductivity