Link to the full tech notes
Transcript of Link to the full tech notes
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ECO-FRIENDLY WATER TREATMENT PLANT
BIG RIVER STEEL
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INTRODUCTION
CHALLENGES
LAYOUT
PROCESS TECHNOLOGY
EFFICIENCY
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INTRODUCTION
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INTRODUCTION| BIG RIVER STEEL
OSCEOLA
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EAF + LF + RH
CCM
COLD MILL +
GALVANIZED LINE
1st Phase : 1,5 Mtpy 2nd Phase: 3 Mtpy
1st PHASE :
• 150 Tn EAF • 150 Tn LF • 150 Tn RH • CSP ( 6 Stands) • PLS/SPM/CGL/BAF
INTRODUCTION | BIG RIVER STEEL
TUNNEL FURNACE+CSP
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CHALLENGES
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CHALLENGES | BIG RIVER STEEL
DO NOT MIX CIRCUITS
REDUCE INVESTMENT & OPERATION
COST
DESIGN PREMISES_____
INDEPENDENT AND
EFFICIENT OPERATION
REDUCE WORKS ONSITE COMPLETE IN
14 MONTHS
EASY OPERATION
AND MAINTENANCE
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CHALLENGES | BIG RIVER STEEL
CIVIL DESIGN & EXECUTION_____
• Proximity of New Madrid, Missouri.
• New Madrid area contains the highest level of seismicity in the central and eastern parts of the United States.
• Very high water level.
• Drain pumps needed and sheet piling must be used.
• Reduce excavations as much as possible.
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CHALLENGES | BIG RIVER STEEL
PIPING DESIGN_____
• Avoid Corrosion
• Pipes towards buildings ALL buried.
• HDPE pipes
• Tight Project schedule.
• Reduce erection time, waste material and cost.
• PREFABRICATED pipe.
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CHALLENGES | BIG RIVER STEEL
OPERATION & SOFTWARE_____
• Efficiency
• Reduce Operational Cost
• Automation and signals gathering improve operation.
• Fully Automated system
• Easy operation and maintenance.
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LAYOUT
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MELTSHOP AREA
HSM AREA
COLD MILL AREA
LAYOUT | BIG RIVER STEEL
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• NCW EAF+LF+RH • NCW EAF SPRAYS
• NCW GAS DUCT
• CW DEGASSER
• ELECTRICAL ROOM
LAYOUT | BIG RIVER STEEL
MELTSHOP AREA
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• PRETREATMENT
• NCW HSM +CCM
• CW CCM • CW HSM
• CW LAMINAR
• ELECTRICAL ROOM
LAYOUT | BIG RIVER STEEL
HSM ( CSP) AREA
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• NCW COLD MILL
• WASTE WATER • ELECTRICAL ROOM
LAYOUT | BIG RIVER STEEL
COLD MILL AREA
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PROCESS TECHNOLOGY
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PRETREATMENT
PROCESS WATER
EFFLUENTS TREATMENT
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PRETREATMENT
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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IRON REMOVAL____
DEEP WELLS Iron Content 5 ppm
REQUIREMENTS Iron Content 0.1 ppm
Reliable technology with low operations costs and low investment …. NEEDED
OXIDATION + FILTRATION
GREEN SAND
High retention time needed, civil works increasing, important power consumption, iron removal limited
High chemical consumption, high cost, iron removal limited
DMI 65 MEDIA Not previous aerations needs. Low chemical
consumption. High performance.
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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Catalytic Filtration media
• Tailor made for the removal of Manganese & Iron. • Silica sand based granular material, its active ingredients are
permanently fused into the grain • DMI-65 performs role of catalyst to promote oxidation of iron
and manganese in solution into precipitate • Also performs highest quality mechanical filtration
Potassium Permanganate not required Wide pH range
Up to 10 years operation
WATER QUALITY…
INDUSTRIAL WATER (IRON REMOVED)
SOFTENED WATER
DEMI WATER
EDI WATER
PROCESS & TECHNOLOGY | BIG RIVER STEEL
IRON REMOVAL____
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PRETREATMENT
WATER: River
IRON REMOVAL
FLOW: 800 m3/h F
RO / SOFTENER
READY FOR FUTURE
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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PROCESS & TECHNOLOGY | BIG RIVER STEEL
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PROCESS WATER
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PROCESS & TECHNOLOGY | BIG RIVER STEEL
COMMON TECHNOLOGY
ALL FILTER SYSTEMS INCLUDE
RING FILTERS ONLY
Side filtration 10% NCW
Total Filtration CW
CONTACT SYSTEMS WITH
DECANTING BASINS
( 2 UNIT MINIMUM)
SUBMERSIBLE PUMPS IN
SCALE PITS AND SLUDGE
MANAGEMENT
( STAINLESS & VORTEX)
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NCW EAF+LF
WATER: Clean
FLOW: 1892 m3/h
PRESSURE: 7 bar
T DROP: 15ºC
FUTURE EXPANSION
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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NCW Sprays
WATER: Clean
FLOW: 3100 m3/h
PRESSURE: 7 bar
T DROP: 15ºC
FUTURE EXPANSION
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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NCW Gas Duct
WATER: Clean
FLOW: 3350 m3/h
PRESSURE: 5,5 bar
CLOSE CIRCUIT
NCW Gas Duct
T DROP: 25 ºC
FUTURE EXPANSION
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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NCW Gas Duct
WATER: Dirty
FLOW: 1040 m3/h
PRESSURE: 4 bar
TSS outlet : 80 ppm
CW Degasser PROCESS & TECHNOLOGY | BIG RIVER STEEL
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NCW Gas Duct
WATER: Clean
FLOW: 4180 m3/h
PRESSURE: 7 bar
NCW HSM & CCM
FUTURE EXPANSION
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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NCW Gas Duct
WATER: Dirty
FLOW: 1165 m3/h
PRESSURE: 16/8 bar
2x7 mts decanters
CW CCM
FUTURE EXPANSION
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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NCW Gas Duct
WATER: Dirty
FLOW: 8000 m3/h
PRESSURE: 13/6 bar
4X 11 mts. decanter
CW HSM
FUTURE EXPANSION
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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NCW Gas Duct
WATER: Dirty
FLOW: 7100 m3/h
PRESSURE: 2/12 bar
25% FILTERED
CW LAMINAR PROCESS & TECHNOLOGY | BIG RIVER STEEL
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NCW Gas Duct
WATER: Clean
FLOW: 3055 m3/h
PRESSURE: 6,5 bar
FUTURE EXPANSION
NCW Cold Mill PROCESS & TECHNOLOGY | BIG RIVER STEEL
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EFFLUENT DISCHARGE
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Accomplish Discharge Limits Water Reuse
Zero Liquid Discharge
Remove from the waste water and cooling towers blowdown:
• Oils
• Solids
• Heavy metals
• Adjust pH
Accomplish Discharge Permits
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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NCW Gas Duct
WATER: Waste
FLOW:100/180 m3/h
PRESSURE: 2 bar
OIL REMOVAL (DAF)
Waste Water
PH CONTROL
PROCESS & TECHNOLOGY | BIG RIVER STEEL
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EFFICIENCY
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EFFICIENCY | BIG RIVER STEEL
OPERATIONAL COSTS_____
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EFFICIENCY | BIG RIVER STEEL
• 12000 m3/h ( 53000 GPM) filtered. • Ring Filters reduce drastically backwash water. • Only 4 m3 per battery.
WATER__
Low Water Consuming Equipment Selected:
Sludge Dewatering :
• Installed a Press Plate per Contact Circuit. • Humidity values up to 20% • Water recovered.
Water Reuse
• Water used more than one time • Blowdown distribution system
MORE THAN 30000 M3/H (130,000 GPM)PUMPED !!
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EFFICIENCY | BIG RIVER STEEL
NCW Meltshop
CW HSM CW CCM
NCW Gas Duct NCW EAF Spray NCW HSM & CCM NCW Cold Mill
Purges Manifold
WASTE WATER TREATMENT
WASTE WATER COLD MILL
WATER_____
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EFFICIENCY | BIG RIVER STEEL
Pump Selection
ENERGY_____
: “More is better” ( NCW)
“NCW Pumps feed different areas with different simultaneity. Better to split in more pumps and keep soft starter than big pump”.
23 MW Installed !!
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EFFICIENCY | BIG RIVER STEEL
Variable Speed
ENERGY_____
• In contact circuits ( CW) with flow difference depending on product mix.
• All Cooling Towers fans, due to temperature variations.
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EFFICIENCY | BIG RIVER STEEL
CHEMICALS
Close collaboration between BRS / Cheamtreat/ Russula
Chemical signals link to main system
Fast Response to system changes ( Oil spillages, etc)
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EFFICIENCY | BIG RIVER STEEL
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• NEW TECHNOLOGLY IMPLEMENTED PUSHING TOWARDS MOBILE DEVICES.
• WIFI COVERAGE IN WHOLE WATER FACILITY.
• MONITORIZE WHENEVER, WHEREVER
EFFICIENCY | BIG RIVER STEEL