SWRO ensures continuous Water Supply for Refinery while minimizing Dependency on Freshwater Resources.

WABAG executed the contract for the turnkey construction of a 40 MLD seawater reverse osmosis (SWRO) plant in Mangaluru, Karnataka, expandable up to 70 MLD, for Mangalore Refinery and Petrochemicals Limited (MRPL). The project aims to reduce dependency on freshwater sources. The state-of-the-art plant features advanced pretreatment followed by a 2-stage RO system with three 10 MLD trains. The scope also included 11 km of cross-country piping to supply treated water to MRPL’s refinery. WABAG took over operations and maintenance in April 2022 for a 10-year period, ensuring industrial water security and operational continuity for the refinery.

Project Features:

• Scope:
  • DBO: EPC turnkey execution, including design and engineering, construction, equipment supply, installation, testing and commissioning as well as
  • 10 years O&M.
• Technologies:
  • Seawater intake system,
  • Electrochlorinator,
  • Comprehensive pretreatment by Lamella clarifiers & Ultrafiltration,
  • 2 pass RO system, 
  • Energy recovery by pressure exchanger (achieving overall energy recovery of 47%),
  • Remineralisation, 
  • Outfall system.
• Impact: This state-of-the-art SWRO plant ensures industrial water security by providing a sustainable, reliable & affordable alternative source of water for MRPL Refinery. A salient feature of the plant is that the infrastructure including buildings, foundation, intake & outfall are designed to accommodate a future expansion up to 70,000 m3/d. This design makes it future-proof in the face of erratic climatic conditions.