CATALYST AND HETEROGENEOUS PHOTOCATALYSTIC FENTON PROCESS FOR SEWAGE WATER TREATMENT Russian patent published in 2009 - IPC B01J23/78 B01J23/83 C02F1/32 C02F1/72 

FIELD: chemistry.

SUBSTANCE: present invention is an efficient heterogeneous photocatalytic Fenton system for neutralisation of organic impurities in sewage water using heterogeneous catalysts, based on powdered or textured perovskite at room temperature and atmospheric pressure. The system is used for decomposing acetic acid, methyl-tert-butyl-ether (MTBE), methanol, ethanol, their mixtures and wine production wastes. Organic substances are removed through oxidation to gaseous CO₂. The effect of H₂O₂ concentration and pH is established. Further increase in efficiency of treatment is achieved through dosed supply of H₂O₂. The heterogeneous photocatalytic Fenton system allows for widening the operating pH range (2-8) compared to a homogeneous system (pH 2-4) without precipitation.

EFFECT: increased efficiency of treatment and widening of the operating range.

15 cl, 10 ex, 4 tbl, 5 dwg