OILLCONTAINING WASTE WATERRTREATING MATERIAL COMPRISING MODIFIED ACTIVE CARBON

摘要

PURPOSE:An oil-containing waste water-treating material having a high treating capacity and being suitable for treatment of oil-containing mixtures or industrial waste water, comprising an active carbon with its surface modified with an amine or a pyridine. CONSTITUTION:A modified active carbon with its surface chemically combined with sec. or tert. amine is prepared by adding bromine to the surface of an active carbon (a particulate or fine powder form having a high specific area is preferred), heating the brominated active carbon in an aqueous solution of a sec. or tert, amine to effect replacement of bromine (if the above brominated active carbon is heated in an aqueous solution of a tert. amine compound, a modified active carbon with its surface chemically combined with an amine in the form of quat. ammonium is obtained). The resulting active carbon is employed as a treating material. The modified active carbon can also be prepared by graft-polymerizing, onto the surface of an active carbon, a vinyl monomer having a tert. amine structure, a quat. amine structure or a pyridine structure.