Water Reuse Policy

Walailak University promotes the development of the university as a green and sustainable happiness university in line with the 20-year Strategic Plan (2018–2037) of the university, specifically Strategic Issue 5, focuses on enhancing the university’s image as a green, happy university town. To establish a lasting image of a green and happy university city, the university has undertaken various supportive activities. These activities include campus infrastructure and utilities management, energy and climate change management, waste management, water management, transportation systems management, and environmental sustainability practices.

Since water is the most vital resource for all living beings and a key factor for human survival, the university promotes and emphasizes the sustainable use of water resources. Walailak University has implemented a wastewater treatment system, which transforms wastewater into reusable water for other purposes. The reuse of treated wastewater is part of the university’s sustainable water management, ensuring that water remains an alternative resource for human activities.

Walailak University is currently implementing the water reuse policy that was established in 2022. The university has this policy to maximize water reuse across university, focusing on the continuous reuse of treated water. For detailed information about the policy, please refer to the guidelines available at

The university has established a wastewater treatment system under the Waste Management Project, designed to handle 4,000 cubic meters of wastewater per day with a BOD (Biochemical Oxygen Demand) of 150 milligrams per liter. The treated water discharged from the system has a BOD of 20 milligrams per liter. The wastewater treatment system is a biological treatment system, consisting of one aerated lagoon, followed by two facultative ponds, an ultraviolet disinfection system (UV Disinfection), and a wetland pond. The wetland pond serves as a reservoir for the treated water before it is reused. After the treated water undergoes standard testing and quality assessment, it can be reused for various purposes, benefiting agricultural activities and other uses.

1. The treated water is reused for watering plants within the Walailak University.

2. The reuse of treated water for the purpose of tilapia farming.

3. The reuse of treated water for washing various vehicles, such as bicycles, motorcycles, and cars.

4. The reuse of treated water for cleaning roads or animal enclosures within the university.

5. The reuse of treated water as cooling water for the incinerator system used in the university’s waste disposal operations.

https://green.wu.ac.th/wp–content/uploads/2019/11/Wastewater treatment manual.pdf

https://www.youtube.com/watch?v=2AfjgISLd3g

https://board.postjung.com/1459713

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