THE MANUFACTURING METHOD OF OXIDATION CATALYST USING STEEL SLAG AND THE WASTEWATER TREATMENT APPARATUS USING IT

• Main Authors: KIM, LAE HYUN, PARK, DAE WON, CHANG, WON SEOK
• Format: Patent
• Language: English
• Published: 17.08.2007
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

An oxidation catalyst which can reduce the recalcitrant materials, colors and toxic materials by oxidizing recalcitrant materials, colors and toxic materials that are present in various types of wastewater event under a room temperature and an atmospheric pressure using steel slag disused, a method for preparing the same, and a wastewater treatment apparatus using the same are provided. An oxidation catalyst is characterized in that at least one element selected from transition metals, alkali metals and alkali earth metals onto a steel slag support manufactured in the form of powder, granule or pellet. A wastewater treatment apparatus comprises: a reactor(1) in which a slag catalyst(2) is filled; a catalyst supporting layer(3) for supporting the filled catalyst in a lower part of the reactor; a wastewater storage tank(9) for storing wastewater supplied to the reactor; an oxidizer storage tank(7) for storing an oxidizer supplied to the reactor; a treated water tank(12) for storing water treated in the reactor; and a recirculating pipe(4) for recirculating a catalyst layer of the reactor. The wastewater treatment apparatus further comprises an in-line mixer(6) for receiving and uniformly mixing the wastewater and the oxidizer to supply the mixture into a lower part of the reactor.