Guide to Floating Treatment Wetlands—A Sri Lankan Perspective

Constructed floating wetlands (CFWs) are gaining popularity as a low-cost, sustainable solution for water quality management. CFWs are artificial marshland systems that utilise natural processes to treat wastewater, stormwater, and degraded water bodies. The technology promises to be a game-changer in the field of environmental protection as it effectively removes pollutants, minimises water wasting, and promotes biodiversity. This chapter examines CFWs implementation, including literature studies, design, social acceptance, operation, research and development, and maintenance of CFWs. The implementation process involves site selection, studies, design, permissions, CFWs installation, and management. The site selection process considers factors such as water quality, depth, and flow rate. The site selection process considers water quality, depth, and flow, whilst the design involves choosing vegetation and substrate. During installation, modules are positioned, and vegetation is planted. Once installed, the system is monitored to ensure efficient treatment of the target water quality parameters. Maintenance includes pruning, plant replacement, and substrate cleaning. The implementation of CFWs in an area offers numerous benefits, such as the removal of pollutants, reduction in water wastage, and promotion of biodiversity. Scalable, flexible solution for wastewater, stormwater, and urban/agricultural runoff. CFWs provide long-lasting water quality solutions through design, installation, and maintenance.