The adsorption of suspended cadmium in irrigation water by paddy field system is the main process of purifying heavy metals in farmland irrigation water. The Hydrodictyon reticulatum was collected from paddy feld crust to study the process of removal of cadmium-loaded cadmium suspensions with different particle sizes. Combined with the analysis of the distribution of heavy metals, the removal mechanism of crusts with different sizes of suspended cadmium was investigated. The results showed that the accumulation of ionic cadmium was stronger than that of colloidal cadmium in Hydrodictyon reticu...
