Study on Phosphorus Removal Pathway in Constructed Wetlands with Thermally Modified Sepiolite

Constructed wetlands, as natural sewage treatment ecosystems, have been widely used in the fields of rural domestic and plant tailwater treatment. However, synchronous removal phosphorus most constructed wetlands is not ideal. This study aimed to prepare thermally modified sepiolites with high adsorption capacities design a wetland based on them. Thermal modification was adopted enhance capacity sepiolite its specific surface area ion exchange capacity. The physicochemical properties performance were studied. results showed that higher than those sepiolite, reaching 19.494 mg·g−1. concentration effluent 0.07 mg·g−1 91.05%. An analysis forms proved main pathway substrate, form mainly Ca/Mg-P Fe/Al-P.