State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
Bioresour Technol. 2015;189:426-429. doi: 10.1016/j.biortech.2015.04.062. Epub 2015 Apr 22.
Laboratorial scale experiments were conducted to investigate a novel system integrating catalytic ultrasound oxidation (CUO) with membrane bioreactor (CUO-MBR) on advanced treatment of biologically pretreated coal gasification wastewater. Results indicated that CUO with catalyst of FeOx/SBAC (sewage sludge based activated carbon (SBAC) which loaded Fe oxides) represented high efficiencies in eliminating TOC as well as improving the biodegradability. The integrated CUO-MBR system with low energy intensity and high frequency was more effective in eliminating COD, BOD5, TOC and reducing transmembrane pressure than either conventional MBR or ultrasound oxidation integrated MBR. The enhanced hydroxyl radical oxidation, facilitation of substrate diffusion and improvement of cell enzyme secretion were the mechanisms for CUO-MBR performance. Therefore, the integrated CUO-MBR was the promising technology for advanced treatment in engineering applications.
进行了实验室规模的实验，以研究一种新型系统，该系统将催化超声氧化 (CUO) 与膜生物反应器 (CUO-MBR) 集成，用于对生物预处理煤气化废水进行深度处理。结果表明，以负载 Fe 氧化物的污水污泥基活性炭 (SBAC) 为催化剂的 FeOx/SBAC 负载型 CUO 在去除 TOC 并提高可生化性方面具有很高的效率。与传统的 MBR 或超声氧化集成的 MBR 相比，低能耗和高频 CUO-MBR 系统在去除 COD、BOD5、TOC 和降低跨膜压力方面更有效。增强的羟基自由基氧化、促进基质扩散和改善细胞酶分泌是 CUO-MBR 性能的机制。因此，集成的 CUO-MBR 是工程应用中深度处理的有前途的技术。
