INORGANIC ANION ADSORBENT, ITS MANUFACTURE, AND ADSORPTION TREATMENT

摘要

PURPOSE:To produce a low-cost adsorbent having high adsorptivity of harmful inorganic anions and long life, by using a specified chelating resin carrying metallic ions. CONSTITUTION:Harmful inorganic anions, such as phosphoric, fluorine, arsenite anions, are selectively adsorbed from service water, sewage, industrial water and waste water, boiler water, etc. with an adsorbent produced by this invention. A phosphorus-containing phenolic chelating resin having a chelating group formed by introducing a primary or secondary alkylamino group with its hydrogen atoms partially or totally substituted by methylenesulfonic acid groups into the phenol ring are reacted with an aq. soln. of 2-5%, 3-5pH sulfate or nitrate containing metallic ions, such as Fe, Sn, Ti, or Al at 5-40 deg.C, thus permitting an inorganic anion adsorbent of a phosphorus-containing phenolic chelating resin carrying metallic ions having superior performance to be obtained.