Study Of Catalysts M_xO_y-SnO₂ Used In Degradation Of Molasses Wastewater By Catalytic Ozonation

Molasses wastewater was a type of high concentration and acidic organic effluent, which was not disposable easily for its dark color, high COD and BOD. Presently, physi-chemical technology and utilization of resources were mainly applied to Molasses wastewater treatment, however, either of them had disadvantages. Catalytic ozonation was used to disposal of molasses wastewater in this work, tentatively. As a branch of advanced oxidation process(AOP), catalytic ozonation for Molasses wastewater treatment was an emerging green technology, for ozone was a high efficiency, eco-friendly oxidant without second pollution.The key problem of enhancing efficiency of catalytic ozonation was how to produce sustainable and large amounts of active groups such as OH· radical. But essentially, it was related to the matter of choosing catalyst. Thus, all the work aimed at catalyst screening and preparation. It was found that SnO₂ prepared by the method of NH₃·H₂O precipitation exhibits high catalytic activity through the...