20/06/2026
Domestic wastewater is one of the most significant environmental pressures in urban areas of Vietnam, particularly in densely populated neighborhoods with limited infrastructure. A recent study by Le Hoang Viet and Nguyen Vo Chau Ngan (Faculty of Environment and Natural Resources, Can Tho University) evaluated a three-stage aerobic biological rotating cage (an improved form of the rotating biological contactor - RBC) using K3 media, demonstrating high treatment efficiency and promising applicability due to its low investment cost and simple operation.