Water Recycling Project

The Luang Prabang Hydropower Project has implemented a water recycling system at its batching plant. This system reuses water for key activities, including aggregate cooling (reducing rock temperature), cleaning the concrete mixing plant, and washing concrete transport trucks, with a total water usage of 1,430 cubic meters per day. To minimize water waste, 1,200 cubic meters per day of used water is pumped back into the process, leaving 230 cubic meters per day for additional uses. The remaining water is used for cleaning the plant and trucks and spraying roads to reduce dust from traffic within the project site. In total, the project reuses 83,950 cubic meters per year (or 83,950,000 liters per year), significantly reducing reliance on natural water sources and minimizing wastewater discharge into the environment. The water recycling initiative officially began in January 2023.

In 2025, the Luang Prabang Hydropower Project implemented a water recycling initiative by repurposing residual water from the drinking water treatment process to support operational needs. the project identified the potential of water lost from the RO filtration system, which had passed quality checks according to standards, and reintegrated it into the internal water production system for appropriate reuse. This approach significantly reduced water loss within the project.

Through this effort, the project successfully reused a total of 17,154 cubic meters of water, which translates into cost savings of approximately 514,620 baht. This practice not only enhances resource efficiency but also reflects the project's commitment to sustainable water management. The initiative is planned to continue in subsequent years as part of ongoing environmental stewardship.