Trivalent iron flocculating agents - by catalytic oxidation of divalent iron cpds. in sulphuric acid soln. with continuous regeneration of catalyst

• Main Authors: IVAN,.FUCIK,THOMAS, MAYER,UDO
• Format: Patent
• Language: English; German
• Published: 29.08.1974
• Edition: 2
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Trivalent iron-contg. flocculating agents for treating liquids. e.g. effluent waters, and for water treatment, are made by partial oxidation of aq. solns. of divalent iron with atmospheric O in the presence of H2SO4 and catalytic active charcoal, at is not >130 degrees C (preferably 40-80 degrees C), in the reaction zone of a fluidized bed, and during the oxidation, removing part of the active charcoal from the immediate reaction zone and reblending for the process of regeneration. The continuous catalyst regeneration gives high rates of reaction compared with known processes.