Strengths - cost effectiveness, - Good removal efficiency and better plant accommodation facilities. - Planted floating bed systems effectively remove nutrients and increase dissolved oxygen (DO) and transparency in urban river water [54] . - Show ability to remove organics, nutrients, heavy metals, and emerging trace pollutants such as antibiotics, pesticides, and hormones without land requirement [55] . - Contribute to carbon sequestration. - Systems movable can be deployed anywhere in the river. - Provides refuge for birds, macroinvertebrates, and fish. - Adaptability to a variety of environmental conditions [51] . | Weaknesses - Chemical properties of water bodies can be affected by the floating rafts. Low dissolved oxygen (DO) conditions may occur in the water column under the floating wetland. - Vulnerability of raft and buoyancy to strong waves which may seriously damage the structure. - Risk that biomass accumulation may exceed the buoyancy provided by floating rafts. - Water purification efficiency may be limited by the performance of plants and microorganisms. - Oil contaminants if present in river water can damage the plant roots system. |
Threats - Risk to ecosystem integrity: for example, if invasive species were introduced by FTWs and other practices, these plants could form monotypes and significantly affect biodiversity, ecosystem function, and human uses of the affected environments [51] . | Opportunities - Improve the raft stability and resistance to high water flow, - Increase FTW processing capacity to accommodate large rivers. |