Plant Optimizing Present
Transcript of Plant Optimizing Present
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Content :• Plant Operating Overview
1. Chlorination Plant2. Desalination Plant
a. Clarificationb. Filtrationc. RO Desalination
3. Demineralization Plant4. Waste Water Treatment Plant
• Plant OptimizingTanjung Jati B Unit 1&2
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1. Chlorination Schematic Flow Diagram
SEAWATER INLET
PUMP
PUMP
SELF CLEANING STRAINER
MANUAL STRAINER
GENERATORTRAIN A
TR/RE
+ -
GENERATORTRAIN B
TR/REGAS RELEASE CYLINDER
+ -
GAS RELEASE CYLINDER
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Desalination Plant Overview
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a. Clarification
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b. Filtration Section
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c. Reverse Osmosis
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RO Desalination Product as Feed Demineralization Plant
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Cation Exchanger Anion Exchanger Mixed Bed
3. Demineralization Overview
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4. Waste Water Treatment Overview
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Waste Water Treatment
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Chlorination Plant
Desalination Plant
Demineralization Plant
Waste Water Plant
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PLANT OPTIMIZING1. Piping Connection From
Demineralization Plant To Waste Water Treatment (Implemented)
2. Sediment Pond For FGD Blow Down (Planned)
3. RO Membrane Replacement Plan (Planned)
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PIPING CONNECTION FROM DEMINERALIZATION PLANT TO WASTE WATER TREATMENT
Regeneration Waste in Neutralizing Tank (DM Area)
- High pH ( 11-12 )- Direct Neutralizing by HCl until
pH 6-9- Discharge to The Sea Directly- Neutralize By Decrease pH- Environment Concern Only pH,
Because Chemical Used Only NaOH and HCl
Retention Basin Water (WWTP Area)
- Relatively Low pH at WWTP (pH 5-7)
- There is pH Neutralizing Equipment
- Accepted pH Range before discharging to The Sea 6-9
- Neutralize By Increase pH
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SEA
Original Design Installing Pipeline Connection to WWTP Retention Basin
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Action :
- About 1000 m Piping Connection was Implemented From Neutralizing Tank (DM Plant Area) to Retention Basin (WWTP Area)
- Pumps and Control Instrument are used existing at DM Plant
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Pipeline Connection to WWTP Retention Basin Overview
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Additional PipelineStarting Point
End PointPipeline Overview
BOLER TURBINE AREA
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Progress
• IMPLEMENTED Agustus 2008
• Done Well !!!!
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After Connection
Neutralizing Tank
(DM area)
HCl
The Sea
RETENTION BASIN (WWTP AREA)
NaOH
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Current Condition
Regeneration Waste in Neutralizing Tank (DM Area)
- No pH Neutralizing Required Before discharging to WWTP
- Neutralized by Retention Basin Water
Waste Wa ter Treatment Plant Condition Retention Basin (WWTP Area)
- pH Increasing Assisted by New Waste Supply from DM Plant
- There is pH Neutralizing Equipment, but Decreasing of Operating Time
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2. Sediment Pond for FGD Blow downat WWTP Area
Background• High TSS ( +10 % solid) Flue Gas Desulphurization
Blowdown to Retention Basin• Performance of WWTP is not for High Solid
Treatment• No Dredging Access for Retention Basin so, Heavy
Equipment Needed for Retention Basin Dredging Activity
• Operational of WWTP Cannot be Stopped for Long Time
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DM Plant
Boiler Blow down
FGD Blow down
WWTP SYSTEM
RETENTION BASIN
Sludge FGD FGD SLUDGE
Current Condition
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Planned Action
FGD Sediment Pond Required> Required Condition
– Sediment Pond consist of two Side ( A and B ) to Accommodate continuity of FGD Blowdown
– Must Be Easy Accessed By Wheel Loader, Wheel Loader In charged By Material Handling Operation
– Completed by Control System and Integrated with WWTP Operating Panel, and Operational In charged by WWTP Operator
– Will Reduce Issue for Environment, Because FGD Blow down Sludge is not Part Of Hazardous Waste
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RETENTION BASIN WWTP SYSTEM
DM Plant
Boiler Blow down
FGD SEDIMENT POND
FGD Blow downPlanned Illustration
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FGD Sediment Pond Technical Overview
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PROGRESS
Will be Implemented ASAP!!!!
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3. RO Membrane Replacement Plan
HISTORY• The existing RO Membrane is TOYOBO Product with series HB10255SI• Current condition has been in operation in average of more than 2 years without
Spare membrane replacement. (for RO B is almost 3 years / tactical time)• Manual book by Toyobo, it is advisable to replace 10-15% per year• Current RO membrane conditions, it is found defective product in the form of an
imperfect molding off "cap“ RO membrane cover.• The trend of increasing product conductivity, current average conditions is
above 300 us / cm. Estimated normal membrane operation life time that still "cover" reasonable make-Up Plant Feed is less than one year (estimation) if no RO membrane replacement.
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Background of the RO membrane replacement
• Special order for existing RO Membrane [to have more competitive price]
• The warranty existing product is not valid
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Technical ReviewComparison between Spiral Wound and Hollow Fiber
Spiral Wound Hollow Fiber
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Technical Review
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Some Problem Found : Demineralization Plant units 1 and feeds to make up: “conductivity <300us/cm” (TDS + 205 ppm)”
• RO Product as Feed Of Demineralization Plant Requirements
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ITEM
TOYOBO TORAY METITO
Replacement of existing elements New trains New trains
PROCESS DESCRIPTION One Stage with Hollow FibreOne Stage with Spiral Wound
Two Stages with Spiral Wound
(existing membrane type) type type
Product Quality (Condutivity)
inlet 51 500 … 54600 uS/cm 51 500 … 54600 uS/cm 51 500 … 54600 uS/cm
outlet 1st stage < 250 uS/cm 350 max value at one stage 1st stage <750 uS/cm
outlet 2nd stage second Stage <30 uS/cm
Membrane manufacturer Toyobo Toray several manufacturers
AVAILABLE OPTION
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Spiral Wound
Turbidity, NTU < 1.0 < 1.0
Silt Density Index, SDI < 3.0 < 3.0
Iron, Fe+3, ppm < 0.3 < 0.05
Strontium, ppm NS < 0.1
Barium, ppm NS < 0.1
Silica, reject, ppm 50-160 50-160
Organics, ppm NS NS
Chlorine, residual, ppm 0.1-0.5 max 0
pH Range 4-6 4-11
Feed Temperature Max, o C 35 ° 45°
Parameter Control - manufactureHollow Fibre
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Base on Parameter Control
• Spiral Wound Type of Membrane can be applied by existing Condition pre-treatment before entering Membrane
• More concern only about chlorine residual because currently Residual Chlorine still 0.2 ppm feed the Membrane
• Can be solve by Anti-Chlorine Chemical Injection
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PROGRESS
Will be Implemented ASAP Paper Work is Done