PROCESS FOR CHEMICAL REGENERATION AND REFRESHING OF ADSORBENT SURFACE BY NORMAL TEMPERATURE OG MANGANIC OXID FORMED BY CHEMICAL TREATMENT ON THE SURFACE OF ZOOLOTIC ROCKS CONSISTING OF KILINOPTILOLIT SUITABLE TO REMOVE IRON AND MANGANE CONTENT OF WATERS

摘要

A process is claimed for regenerating/reactivating the MnO2 surface layer of adsorbents (I) used in the removal of Fe and Mn from water, (I) having been produced by chemical surface-treatment of clinoptilolite-contg. zeolitic minerals. - The process, effected at ambient temps., involves: (a) regenerating by treating with 5-10 vol.% of a 0.05-1M HCl soln.: (b) reactivating by treating with 5-10 vol.% of a 10-15 g/dm3 KMnO4 soln.; and (c) washing with Fe- and Mn-free water until neutral.