Spray Pipe Installation Project for Floating Sludge Removal in the Wastewater Treatment Pond – Building B

The wastewater treatment system in Building B operates using the Activated Sludge (AS) process. During the sedimentation stage, some sludge may float to the surface. To prevent this sludge from mixing with the clarified water, water spraying is required to break up and reduce the floating sludge. Previously, the Company used a 1.5-inch hose to spray water twice daily for approximately five minutes per cycle, resulting in relatively high water consumption. To improve efficiency, the Company upgraded the system by installing spray pipes that disperse water evenly throughout the treatment pond. This method uses a smaller volume of water while providing better distribution compared with the previous large-hose spraying method, thereby effectively reducing water consumption in this process.

Performance Results (May 1 – December 31, 2025)

• Based on measurements of pipe size and daily water usage duration, the spray system reduced water consumption by 141 cubic meters.
• The estimated full-year performance is expected to achieve water savings of approximately 241 cubic meters per year.