Wastewater Reclamation at Industrial Parks

Transcription

1 Confederation of Indian Industry Conference on Water Management Hilton Chennai, 17 June 2016 June 2016 Mohamad Nor Ahmad Ranhill Holdings Berhad 1

2 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 Water Reuse 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. 2

3 Project Background 3

4 Ranhill Experience in Wastewater Reclamation Water Reclamation Plant Wastewater Treatment Plant 4

5 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. 5

6 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. 6

7 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 7

8 Treatment Systems 8

9 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 For irrigation, etc. To water reclamation plant 9

10 Treatment Systems Wastewater Process Flow Effluent from Factories Pump Sump Filtrate Sludge cake for disposal Caustic Soda ph Adjustment Tank Filter Press & Decanter Sludge Holding Tank O2 Nitrogen Phosphate SBR 1 SBR 2 SBR 3 Clear water Sludge Slurry Chlorine Discharge Sump Final Discharge Sludge Thickener To RWTP 10

11 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 25 o C Temperature < 40 o C < 40 o C Total Dissolved Solids (mg/l) BOD 5 (mg/l) [20] COD (mg/l) [120] Total Suspended Solids (mg/l) [50] Zinc (mg/l) 5 < 0.5 Oil & Grease (mg/l) 10 < 1 11

12 Treatment Systems Reclamation Plant Treated effluent from Wastewater Treatment Plant Water Reclamation System Revoplus TM + UF + RO System Reclaimed Water for supply 12

13 Treatment Systems Reclamation Plant Process Flow Caustic(aq) & PAC Polyelectrolyte 16,000 m3/day effluent from WWTP Inline mixer RevoPlus TM Flocculation chamber Air Saturation Tube (AST) Recycle 15-30% Dual Media Filter Ultra filtration Disinfection Balancing Tank RO Product Tank Reverse Osmosis Mix with Water Network To Power Plant Reject Water 13

14 Treatment Systems Reclaim Water Data Design capacity: 10,000m3/day Operation hour: 24 hours Parameters Influent Product Water ph at 25 o C Temperature < 40 o C < 35 o C Total Dissolved Solids (mg/l) Total Suspended Solids (mg/l) < 50 < 0.5 Zinc (mg/l) < Iron (mg/l) <

15 Treatment Systems Equipment Clarification/Filtration Combined DAF clarification & filtration High rate process Continuous operation Fully automatic operation Membrane Plant Overall recovery rate: 63% Automatic control including PLC, Starter & Breaker Spiral wound membrane, low energy element. Clean in Place (CIP) system 15

16 Conclusion 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 16

17 Ranhill Holdings Brhad 13th Floor, Menara Perkeso, No 155, Jalan Tun Razak, Kuala Lumpur, Malaysia Tel : Fax : Mohamad Nor Ahmad Vice President mna@ranhill.com.my Thank You 17