Wastewater Reclamation at Industrial Parks

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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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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

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Project Background

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Ranhill Experience in Wastewater Reclamation

Water Reclamation Plant

Wastewater Treatment Plant

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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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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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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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Treatment Systems

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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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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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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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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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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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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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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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• 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

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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

[email protected]

Wastewater Reclamation at Industrial Parks

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