PHOSPHORUS-COMPONENT ADSORBENT AND METHOD FOR WASTEWATER TREATMENT BY USING THE ADSORBENT

摘要

PROBLEM TO BE SOLVED: To provide a phosphorus-component adsorbent having a high adsorption capacity for phosphorus component in wastewater to treat various wastewater efficiently and at low cost with which the adsorption treatment can be attained comparatively in a short time and adsorption of nitrogen component can be attained also simultaneously, even though concentration of the phosphorus component is high or suspended matters are contained, and provide further a simple wastewater-treatment method in which the adsorbent is employed.;SOLUTION: The phosphorus-component adsorbent contains magnesium oxide of which at least 90% by volume measured by the laser diffraction scattering method is of at most 150 μm of particle size. In the method for wastewater treatment, the phosphorus-component adsorbent is dispersed in the wastewater, while the pH of the liquid to be treated is adjusted at 8-11. The phosphorus component is enriched and adsorbed, and then subjected to solid-liquid separation.;COPYRIGHT: (C)2005,JPO&NCIPI