Faculty of Technology, Khon Kaen University, led by Assistant Professor Dr. Araya Chaowaruangrit, Dean of the Faculty of Technology, and Professor Dr. Alisara Ruangsaeng, Deputy Dean for Research and International Affairs, along with students from the Faculty of Technology, attended the academic seminar on “Sustainable Solid Waste Management” organized by the Office of Science, Royal Society of Thailand under the Royal Society’s Mobile Lecture Project and the Earth Science and Environmental Science Thought Center Project for Fiscal Year 2024 on March 18, 2025 at Room M3, Science Park, Khon Kaen University. This seminar was honored by Emeritus Professor Dr. Surapol Issarakraisil, President of the Royal Society of Thailand, as the opening chairman, with Emeritus Professor Dr. Sawitree Limthong as the reporter. The purpose of this seminar was to inform participants of the policies and development plans for sustainable solid waste management, from government policy levels, local management, cooperation and support from the private sector, and practices of the general public. It was also a forum for exchanging knowledge and ideas on effective solid waste management for application in daily life. In addition, to create awareness of the global crisis in solid waste, the morning session of the seminar began with a special lecture on “Plastic Waste Problems and Solutions” by Professor Dr. Jongrak Phonprasert, Royal Academician, School of Science. This was followed by a discussion on “Guidelines for Developing a Sustainable Solid Waste Management System in Thailand” by four distinguished speakers: Emeritus Professor Dr. Thares Srisathit, Advisor to the Environmental Engineering Association of Thailand and the National Environment Committee; and Ms. Tasanai Prachuapmon, Director of the Public Health Promotion Division, Office of Public Health and Environment, Khon Kaen Municipality.