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The Cupang Water Reclamation Facility in Muntinlupa City has been upgraded with an advanced biological wastewater treatment system utilizing Hitachi's Pegasus (IFAS) technology. This upgrade, completed in November, enables the facility to treat up to 46 million liters of wastewater.

The Integrated Fixed-film Activated Sludge system combines suspended biomass with fixed media to enhance nitrogen removal, addressing challenges posed by nitrogen compounds in domestic sewage. This system allows for efficient nitrification and denitrification, converting ammonia into inert nitrogen gas.

The approach is particularly beneficial in urban areas where land constraints limit expansion. The new system includes automated controls for aeration and flow rates, optimizing energy efficiency while maintaining treatment effectiveness.