Process and apparatus for purifying streams

摘要

PCT No. PCT/NL93/00119 Sec. 371 Date Nov. 17, 1994 Sec. 102(e) Date Nov. 17, 1994 PCT Filed Jun. 4, 1993 PCT Pub. No. WO93/25481 PCT Pub. Date Dec. 23, 1993A process for purifying streams which contain organic and/or inorganic impurities is disclosed. The stream to be treated is introduced into a water-containing reaction zone which includes a packed bed of activated carbon to which an electrochemical potential is applied and to which ozone or hydrogen is fed at the same time. The cell further uses a contact electrode placed in the packed bed for supplying or removing an electrical current, and a counterelectrode disposed in a reaction vessel. The counterelectrode is electrically insulated from the packed bed of activated carbon. The cell further includes an inlet for feeding in liquid to be treated, an inlet for feeding ozone or hydrogen gas, and an outlet for discharging treated liquid and a further outlet for discharging waste gas.