This book is a collection of selected, peer-reviewed papers presented at the 2023 8th Asia Conference on Environment and Sustainable Development (ACESD), held in Sapporo, Japan, November 3–5, 2023. The ACESD is held annually to provide a forum for researchers, practitioners, and professionals from industries, academia, and governments to discuss research, development, and professional practice in environmental and sustainable development. The book covers diverse topics, including environmental dynamics, global environmental change and ecosystems management, environmental restoration and ecological engineering, water treatment and reclamation, solid waste management, environmental sustainability, and air pollution and control. The book highlights numerous innovative ideas that will spur novel research directions and is a valuable resource for researchers and professionals working in these fields.