MBBR工艺对低浓度飞机除冰废水的处理效果研究

Study on the Treatment Effect of MBBR Process on Low-Concentration Aircraft Deicing Wastewater

摘要: 为解决南方低浓度飞机除冰废水的治理难题，针对现有方法能耗或成本偏高的局限，本研究开展MBBR工艺小试与中试试验。小试采用Kaldnes K5填料，经三阶段驯化，控制溶解氧(DO)浓度2~4 mg/L、填料填充比40%，化学需氧量(COD)平均去除率达82.6%，总氮(TN)去除率多数时段超90%；中试采用薯片填料与“缺氧池 + 好氧池”工艺，处理实际废水时COD去除率稳定在78.88%~82.50%，验证了规模放大可行性。该工艺依托分层生物膜与三相流化优势实现高效处理，为工程化应用提供数据支撑。

Abstract: To solve the treatment problem of low-concentration aircraft deicing wastewater in southern China and address the limitations of high energy consumption or cost of existing methods, this study conducted lab-scale and pilot-scale experiments on the MBBR (Moving Bed Biofilm Reactor) process. For the lab-scale test, Kaldnes K5 carriers were used, and after three-stage acclimation, the dissolved oxygen (DO) concentration was controlled at 2~4 mg/L with a carrier filling ratio of 40%. The average chemical oxygen demand (COD) removal rate reached 82.6%, and the total nitrogen (TN) removal rate exceeded 90% in most periods. For the pilot-scale test, potato chip-shaped carriers and the “anoxic tank + aerobic tank” process were adopted. When treating actual wastewater, the COD removal rate remained stable at 78.88%~82.50%, verifying the feasibility of scale-up. Relying on the advantages of layered biofilm and three-phase fluidization, the process achieves efficient treatment, providing data support for engineering application.