Li Zhipeng, Liu Feng, You Hong, Ding Yi, Yao Jie, Jin Chao
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China E-mail:
Marine College, Shandong University at Weihai, Weihai 264209, China.
Water Sci Technol. 2018 Apr;77(7-8):1931-1941. doi: 10.2166/wst.2018.073.
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 60min, the removal efficiency of chemical oxygen demand (COD) could reach 34%. The introduction of activated carbon, pumice, γ-AlO 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 γ-AlO 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 MnO/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.
本文研究了催化臭氧化与气液固内循环流化床反应器组合系统对生物预处理后的煤化工废水（CCIW）进行深度处理的性能。结果表明，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、浮石、γ -AlO载体提高了COD的去除性能，去除效率分别提高了8.6%、4.2%、2%。负载锰后，活性炭和γ -AlO的催化性能显著提高，COD去除效率分别为46.5%和41.3%；然而，负载锰的浮石的促进作用不明显。负载锰的活性炭具有最佳的催化性能。MnO/活性炭催化臭氧化组合系统可使液相中臭氧浓度保持在较低水平，促进臭氧从气相向液相的转移，提高臭氧化效率。
