Vacuum–Suction Technology integrated with water, gas and solid waste treatment: A comprehensive solution for urban and industrial environments in VietnamNguyen Duc Luong, Huynh Kim Ho, Huynh Thuan Hieu and Nguyen Nhu YE3S Web Conf., 690 (2026) 01004DOI: https://doi.org/10.1051/e3sconf/202669001004