METHOD FOR DEEPLY PURIFYING MICRO-PHOSPHORUS IN WATER BY COMPOSITE RESIN

摘要

A method for deeply purifying micro-phosphorus in water by composite resin is provided. The pH value of water is firstly adjusted to between 5.0 and 9.0 for filtration, then the filtrate passes through an absorption tower filled with composite resin materials to make the micro-phosphorus in water be adsorbed on the composite resin. The adsorption is stopped when the adsorption reaches the leakage point, and a mixed solution of NaOH and NaCl serves as a desorption agent for desorption and regeneration, then CO2 saturated solution is used to leach the absorption tower filled with composite resin materials for regenerating resin. The method has good treatment effect and large treatment capacity, and the materials are renewable and recyclable.