HANXiao-bo,ZOUTing,WANGWei-kang,et al.Pilot Test of AOA Coupled MBBR Process Based on In-situ Capacity Expansion and Transformation[J].China Water & Wastewater,2025,41(5):1-7.
基于原位扩容改造的AOA耦合MBBR工艺中试研究
- Title:
- Pilot Test of AOA Coupled MBBR Process Based on In-situ Capacity Expansion and Transformation
- Keywords:
- AOA process; MBBR process; in-situ capacity expansion and transformation; biofilm formation
- 摘要:
- 以深圳某水质净化厂为研究对象，考察AOA耦合MBBR工艺对实际生活污水的处理效果，验证投加MBBR填料对AOA工艺的促进作用。结果表明，AOA耦合MBBR工艺取得了较好的处理效果，在不投加外碳源的条件下COD、NH4+-N、TN、TP平均出水浓度分别为17.65、0.28、3.58、0.21 mg/L，平均去除率分别为93.15%、98.89%、91.07%、93.24%。耦合工艺在冬季较冷的不利时段有一定的正向作用，且对好氧段的促进作用明显。好氧段MBBR填料富集的专性微生物可强化AOA工艺的硝化作用，提升氨氮和总氮去除率。这为高密度城区水质净化厂的原位扩容改造提供了新的技术思路。
- Abstract:
- The anaerobic-aerobic-anoxic (AOA) process was coupled with the moving bed biofilm reactor (MBBR) process,and was used to treat actual domestic wastewater in a treatment plant in Shenzhen. The objective is to verify the enhancement effect of adding MBBR media on the AOA process. The results indicated that the AOA-MBBR coupled process achieved significant treatment efficiency, with average effluent concentrations of COD, NH4+-N, TN, and TP at 17.65 mg/L, 0.28 mg/L, 3.58 mg/L, and 0.21 mg/L, respectively, without the addition of an external carbon source. The average removal rates for these parameters were 93.15%, 98.89%, 91.07%, and 93.24%. Notably, the coupled process showed enhanced performance during winter, particularly in the aerobic zone, where biofilm-attached microorganisms improved the nitrification capacity of the AOA process, leading to higher ammonia and total nitrogen removal rates. These findings offer a promising technical approach for the in-situ expansion and upgrading of wastewater treatment plants in densely populated urban areas.
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