Method for waste water purification with the aid of a sorption agent

摘要

A method of purifying waste water with treated aluminum oxide. The method comprises contacting the waste water with Al2O3 which has been treated with ions which when incorporated in the crystal lattice of the Al2O3 are capable of delaying crystallization of the gamma phase of the Al2O3 or with the salts of said ions. In one embodiment, the Al2O3 is artificially synthesized and the treatment comprises incorporating the ions, which may be either anions or cations, in the course of the synthesis. Alternatively, the Al2O3 may be treated by subjecting the Al2O3 to a surface treatment with ions capable of delaying crystallization of the gamma phase or the salts thereof. In yet another embodiment, the Al2O3 may be doped with CO2.