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.
Pilot Test of AOA Coupled MBBR Process Based on In-situ Capacity Expansion and Transformation
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第5期
Page:
1-7
Column:
Date of publication:
2025-03-01
- Keywords:
- AOA process; MBBR process; in-situ capacity expansion and transformation; biofilm formation
- 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.
Last Update:
2025-03-01