WANGYu-lan.Application of A2/O+MBBR Process in WWTP Upgrading and Reconstruction with Limited Construction Land[J].China Water & Wastewater,2025,41(12):103-108.
A2/O+MBBR工艺用于占地受限污水厂提标改造
- Title:
- Application of A2/O+MBBR Process in WWTP Upgrading and Reconstruction with Limited Construction Land
- 摘要:
- 福州某污水处理厂提标改造工程设计规模为5 000 m3/d，出水水质由《城镇污水处理厂污染物排放标准》（GB 18918—2002）的一级B标准提高至一级A标准。由于该污水处理厂用地紧张，将原CASS生化池改造为“A2/O池+矩形周进周出二沉池”，同时在好氧区添加悬浮填料，形成“A2/O+MBBR”复合工艺。在生化处理工艺后端增加“高效沉淀池+深床反硝化滤池”深度处理工艺进一步去除SS、TN和TP，经接触消毒后出水水质稳定达到并优于设计出水标准。
- Abstract:
- The upgrading and reconstruction capacity of a wastewater treatment plant (WWTP) is 5 000 m3/d in Fuzhou, the effluent standard is required to raise from first level B to first level A criteria of Discharge Standards of Pollutant for Municipal Wastewater Treatment Plant (GB 18918-2002). With limited construction land, the original CASS biochemical tank was transformed into an A2/O tank + secondary sedimentation tank with rectangular perimeter inflow and outflow, and suspended packing was added to the aerobic tank to form a “A2/O+MBBR” composite process. The advanced treatment process of high-efficiency sedimentation tank + deep bed denitrification filter was added after the biochemical treatment process to further remove SS, TN, and TP. The effluent quality after contact disinfection is superior to the first level A limit specified in the discharge standard.
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