| Special concern has been paid to the pollution of drinking water sources in recent years. Especially some refractory organics in drinking water could directly cause the deterioration of water quality. Accordingly, it is urgently needed to develop new advanced water treatment technology that is applicable in large-scale water treatment to remove refractory organics in water effectively.Ceramic honeycombs with porous gross structure have the characteristic of large specific surface area, high intensity, low expansion, short diffusion length, high abrasive resistance and low pressure drop. Based on above concern, a new type of ceramic honeycombs catalyst loaded with Mn-Cu-K has been prepared to catalyze the ozonation process in drinking water treatment. Ozone/Mn-Cu-K loaded ceramic honeycombs system is thus developed for removing the refractory organics with high stability in water. At the same time the new catalytic ozonation technology with the combination of ceramic honeycombs and ozone has been first directly applied to remove the refractory organics in drinking water. The catalysts showed long lifetime, being readily available, and less cost, easy to be prepared and handled, which have goodapplication potential in drinking water treatment process.Semi-continuous flow process is adopted in the experiments to study the effectiveness and mechanism of ozone/ceramic honeycombs and ozone/Mn-Cu-K loaded ceramic honeycombs toward nitrobenzene removing in drinking water.In ozone/ ceramic honeycombs system the removal of nitrobenzene is enhanced by the presence of ceramic honeycombs. The removal ratio of nitrobenzene increased by 15% compared with the system of ozone alone. However, it is found that ceramic honeycombs have quite low absorbability toward nitrobenzene. The application rate of ozone is increased to 26% in the presence of ceramic honeycombs. At the same time, the decomposition of ozone is also enhanced effectively. The effect of reaction conditions toward ozone/...
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