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. 2014 Aug;166:592-5. doi: 10.1016/j.biortech.2014.05.061. Epub 2014 May 23.
Advanced treatment of biologically pretreated coal gasification wastewater (CGW) was investigated employing heterogeneous catalytic ozonation integrated with anoxic moving bed biofilm reactor (ANMBBR) and biological aerated filter (BAF) process. The results indicated that catalytic ozonation with the prepared catalyst (i.e. MnOx/SBAC, sewage sludge was converted into sludge based activated carbon (SBAC) which loaded manganese oxides) significantly enhanced performance of pollutants removal by generated hydroxyl radicals. The effluent of catalytic ozonation process was more biodegradable and less toxic than that in ozonation alone. Meanwhile, ANMBBR-BAF showed efficient capacity of pollutants removal in treatment of the effluent of catalytic ozonation at a shorter reaction time, allowing the discharge limits to be met. Therefore, the integrated process with efficient, economical and sustainable advantages was suitable for advanced treatment of real biologically pretreated CGW.
采用非均相催化臭氧化与缺氧移动床生物膜反应器（ANMBBR）和曝气生物滤池（BAF）工艺对生物预处理煤气化废水（CGW）进行了深度处理研究。结果表明，用制备的催化剂（即 MnOx/SBAC，污水污泥转化为负载锰氧化物的污泥基活性炭（SBAC））进行催化臭氧化可显著增强污染物去除的性能，通过生成羟基自由基。催化臭氧化工艺的出水比单独臭氧化更具生物降解性和更低的毒性。同时，ANMBBR-BAF 在较短的反应时间内对催化臭氧化出水具有高效的污染物去除能力，可满足排放标准。因此，具有高效、经济和可持续优势的集成工艺适合用于实际生物预处理 CGW 的深度处理。
