Orantanaporn, T.; Tangsiripaiboon, N.; Singkaew, C.; Kavilkrue, M.; Toathom, T.; Jinosawatt, S.; Wongyai, S. Development of a Wastewater Treatment System Using Local Materials to Improve Effluent Quality from Food Service Establishments along the Wang River, Lampang Province Wastewater Solutions. gts 2026, 12, 30-47.