YANGQi-liang,SONGFeng-ming,GUWei,et al.Application of Denitrifying Biofilter and High-efficiency Air Floatation in Upgrading of a WWTP for Quasi-Ⅳ Standard[J].China Water & Wastewater,2023,39(12):125-129.
反硝化生物滤池+高效气浮工艺用于准Ⅳ类提标改造
- Title:
- Application of Denitrifying Biofilter and High-efficiency Air Floatation in Upgrading of a WWTP for Quasi-Ⅳ Standard
- Keywords:
- wastewater treatment plant; denitrifying biofilter; high-efficiency air flotation tank; upgrading and reconstruction
- 摘要:
- 采用反硝化生物滤池+高效气浮池作为新增深度处理工艺，对长沙市坪塘污水处理厂（一期）进行提标改造，将厂区出水水质由《城镇污水处理厂污染物排放标准》（GB 18918—2002）的一级B标准提高到《地表水环境质量标准》（GB 3838—2002）准Ⅳ类标准，工程设计规模为4×104 m3/d（Kz=1.3），深度处理占地仅约1 800 m2。调试及运行期间深度处理组合工艺出水水质均稳定优于准Ⅳ类标准，具有占地面积小、电耗和药耗可控等优点，可为环境敏感地区和需要高品质出水的污水厂提标改造工程，特别是用地比较紧张的同类工程提供借鉴。
- Abstract:
- Denitrifying biofilter and high-efficiency air floatation tank are used as new advanced treatment processes to upgrade and transform the phase Ⅰ project of Changsha Pingtang wastewater treatment plant (WWTP). The effluent quality of the WWTP is improved from first level B criteria in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002) to quass-Ⅳstandard in Environmental Quality Standards for Surface Water(GB 3838-2002). The design capacity of the project is 4×104 m3/d (Kz=1.3), and the footprint of advanced treatment is only about 1 800 m2. During commissioning and operation, the effluent of the combined advanced treatment process is stably superior to the quasi-Ⅳ standard. It has the advantages of small footprint, controllable power and chemical consumption, which can provide reference for the upgrading and reconstruction project of WWTPs in environmentally sensitive areas and requiring high-quality effluent, especially similar projects with tight land use.
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