IN PHOTO: The elevated flood-proof Olandes STP control room located in Marikina City The enhancements at Manila Water’s Olandes STP, which include upgrading the Biological Nutrient Removal system, demonstrates the company’s commitment to environmental sustainability and adherence to government standards on effluents, ensuring cleaner and safer waterways
Manila Water has completed major upgrades at the Olandes Sewage Treatment Plant (STP) in Marikina City, converting its previously unused capacity to support Biological Nutrient Removal (BNR) treatment. This development reflects the company’s dedication to environmental stewardship and adherence to more stringent effluent quality standards.
The P129.31-million BNR enhancement project, finalized in November 2024, aimed to boost the STP’s efficiency in eliminating harmful nutrients such as ammonia, nitrates, and phosphates—pollutants that can severely impact ecosystems if not properly treated. Through this improved BNR process, Manila Water is actively reducing the environmental footprint of wastewater discharge into surrounding waterways.
Key enhancements implemented as part of the operational modification include replacing the existing Conventional Activated Sludge (CAS) process with a more advanced Modified Ludzack-Ettinger (MLE) configuration. This upgrade involved several critical components such as structural modification and repair of tanks, construction of a chemical house for the chemical dosing system, installation of submersible pumps and mixers for improved distribution of treatment chemicals, and installation of a control panel and instrumentation for better monitoring and management of treatment processes.
With a current capacity of 10,360 MLD and a daily average inflow of 5,000 MLD, the Olandes STP serves over 40,000 residents across Barangays Cinco Hermanos, Industrial Valley, Sitio Olandes, Blue Ridge, and Libis in Marikina and Quezon City.
“The completion of the Olandes STP enhancements marks a significant milestone in our ongoing efforts to protect the environment and ensure compliance with stringent effluent standards. By adopting advanced nutrient removal technology, we are not only improving the quality of wastewater treatment but also safeguarding the health of our waterways and communities,” Manila Water Communication Affairs Group Director Jeric Sevilla said.
Moreover, upgrading the Olandes STP to improve its current BNR processes helps meet the stringent regulations of the Department of Environment and Natural Resources (DENR) for Class C wastewater, which supports marine life. This initiative is intended to ensure that wastewater treatment facilities follow BNR process standards, ultimately leading to cleaner and safer bodies of water.
No Comments