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首页> 外文期刊>Water Science and Technology >Advanced treatment of biologically pretreated coal chemical industry wastewater using the catalytic ozonation process combined with a gas-liquid-solid internal circulating fluidized bed reactor
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Advanced treatment of biologically pretreated coal chemical industry wastewater using the catalytic ozonation process combined with a gas-liquid-solid internal circulating fluidized bed reactor

机译：使用催化臭氧处理的生物预处理煤化工生产的先进治疗与气液固体内循环流化床反应器联合

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摘要

This paper investigated the performance of the combined system of catalytic ozonation and the gas-liquid-solid internal circulating fluidized bed reactor for the advanced treatment of biologically pretreated coal chemical industry wastewater (CCIW). The results indicated that with ozonation alone for 60 min, the removal efficiency of chemical oxygen demand (COD) could reach 34%. The introduction of activated carbon, pumice, gamma-Al2O3 carriers improved the removal performance of COD, and the removal efficiency was increased by 8.6%, 4.2%, 2%, respectively. Supported with Mn, the catalytic performance of activated carbon and gamma-Al2O3 were improved significantly with COD removal efficiencies of 46.5% and 41.3%, respectively; however, the promotion effect of pumice supported with Mn was insignificant. Activated carbon supported with Mn had the best catalytic performance. The catalytic ozonation combined system of MnOx/activated carbon could keep ozone concentration at a lower level in the liquid phase, and promote the transfer of ozone from the gas phase to the liquid phase to improve ozonation efficiency.
机译：本文研究了催化臭氧化合物和气液固体内循环流化床反应器的组合系统，用于生物预处理煤化工生产的先进治疗废水（CCIW）。结果表明，通过单独臭氧化60分钟，化学需氧量（COD）的去除效率可达34％。引入活性炭，耐γ-AL2O3载体的鳕鱼的去除性能，分别提高了8.6％，4.2％，2％。用Mn支持，活性炭和γ-Al2O3的催化性能显着提高，COD去除效率分别为46.5％和41.3％;然而，用Mn支持的浮石的促进效果是微不足道的。用Mn负载的活性炭具有最佳的催化性能。催化臭氧和活性炭的组合系统可以将臭氧浓度保持在液相的较低水平，并促进臭氧从气相转移到液相以提高臭氧化效率。

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