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1
Wastewater Reclamation at Industrial Parks
June 2016
Mohamad Nor Ahmad
Ranhill Holdings Berhad
Confederation of Indian Industry
Conference on Water Management Hilton Chennai, 17 June 2016
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Wastewater Reclamation at Industrial Parks
Why Reclaim Our Wastewater ?
• 71% of earth is covered by water
• 97% of the water is in the oceans
• 69% of the fresh water in in the ice caps
• 30% is in the ground
• 1% is the easily accessible surface water
• It’s a valuable source of water; lessen the demand on the natural water sources
• Improving technologies
• Fast Growing
• Growing acceptance
• It’s a high quality useable water to meet specific needs
• Reduces the discharge of effluents to the environment.
Water Reuse
4
Wastewater Reclamation at Industrial Parks
Ranhill Experience in Wastewater Reclamation
Water Reclamation Plant
Wastewater Treatment Plant
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Wastewater Reclamation at Industrial Parks
Project Background
The Project is a BOT Concession between Amata Water Co Ltd and AnuRak Water
Treatment Facilities (wholly owned by Ranhill) with the concession period of 25 years.
Location : Amata Nakorn Industrial Estate, Chonbury, Thailand.
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Wastewater Reclamation at Industrial Parks
Project Background
Amata Nakorn Industrial Estate
Area 2,400 hectares
450 factory lots, with 398 factories in operation.
Industries :
� Automotive
� Electronics & related products
� Chemicals
� Plastics
� Paper
� Steel and metal
� Food Products etc.
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Wastewater Reclamation at Industrial Parks
Project Background
The project is an integrated water & wastewater system for this privately
developed 2400 Ha industrial park.
Facilities : 1. Potable Water Treatment Plant, 2 x 10,000 m3/day
: 2. Wastewater Treatment Plant, 24,000 m3/day
: 3. Water Reclamation Plant, 10,000 m3/day
RWTP Building RO Units
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Wastewater Reclamation at Industrial Parks
Treatment Systems – Wastewater Treatment Plant
Wastewater
generated from the
factories are
collected and sent to
the centralised
wastewater
treatment plant
Discharge to drain,
complying to local
authority standard
To water reclamation plant
For irrigation, etc.
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Wastewater Reclamation at Industrial Parks
Treatment Systems – Wastewater Process Flow
Pump Sump
Effluent from Factories
pH Adjustment
Tank
Discharge Sump
Sludge Slurry
Caustic Soda
SBR
1
SBR
2
SBR
3
Sludge Holding
Tank
Filter Press &
Decanter
Sludge cake for disposal
Final Discharge
O2NitrogenPhosphate
Chlorine
Filtrate
Sludge Thickener
Clear water
To RWTP
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Wastewater Reclamation at Industrial Parks
Treatment Systems – Wastewater Data
Design capacity:
WWTP1 – 16,000 m3/day
WWTP2 – 8,000 m3/day
Operation hour: 24 hours
Parameters Influent Effluent
pH at 25oC 5.5 – 9.0 6.8-7.3
Temperature < 40oC < 40oC
Total Dissolved Solids (mg/L)
1200 - 1500 1200 - 1500
BOD5 (mg/L) 250 3-10 [20]
COD (mg/L) 375 40-100 [120]
Total Suspended Solids (mg/L)
200 6-12 [50]
Zinc (mg/L) 5 < 0.5
Oil & Grease (mg/L)
10 < 1
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Wastewater Reclamation at Industrial Parks
Treatment Systems – Reclamation Plant
Treated effluent from Wastewater
Treatment Plant
Water Reclamation System
RevoplusTM + UF + RO System
Reclaimed Water
for supply
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Wastewater Reclamation at Industrial Parks
Treatment Systems – Reclamation Plant Process Flow
16,000 m3/day effluent from WWTP Inline mixer
Flocculation chamber
Air Saturation Tube (AST)
Dual Media
Filter
Recycle 15-30%
RevoPlusTM
Reverse OsmosisRO Product TankBalancing Tank
Disinfection
Caustic(aq) & PAC Polyelectrolyte
Mix with Water Network To Power Plant Reject Water
Ultra filtration
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Wastewater Reclamation at Industrial Parks
Treatment Systems – Reclaim Water Data
Design capacity: 10,000m3/day
Operation hour: 24 hours
Parameters Influent Product Water
pH at 25oC 5.5-9.0 6.5
Temperature < 40oC < 35oC
Total Dissolved Solids (mg/L)
1500 45 - 50
Total Suspended Solids (mg/L)
< 50 < 0.5
Zinc (mg/L) < 5 0.02
Iron (mg/L) < 5 0.01
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Wastewater Reclamation at Industrial Parks
Treatment Systems – Equipment
• Overall recovery rate: 63%
• Automatic control including PLC, Starter & Breaker
• Spiral wound membrane, low energy element.
• Clean in Place (CIP) system
Membrane Plant
• Combined DAF clarification & filtration
• High rate process
• Continuous operation
• Fully automatic operation
Clarification/Filtration
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Wastewater Reclamation at Industrial Parks
• Water resource is in short supply
• Wastewater reclamation is a viable option in many situations
• The technologies is available, and is improving further
• In an industrial development, it make economic sense to reclaim the wastewater
• Water reclamation helps to protect the environment.
• Recycle – Reduce – Reuse
Conclusion
17
Thank You
Ranhill Holdings Brhad
13th Floor, Menara Perkeso,
No 155, Jalan Tun Razak,
50400 Kuala Lumpur, Malaysia
Tel : 603 2685 5000 Fax : 603 2685 5173
www.ranhill.com.my
Mohamad Nor Ahmad – Vice President