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.
Application of Denitrifying Biofilter and High-efficiency Air Floatation in Upgrading of a WWTP for Quasi-Ⅳ Standard
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第12期
Page:
125-129
Column:
Date of publication:
2023-06-17
- Keywords:
- wastewater treatment plant; denitrifying biofilter; high-efficiency air flotation tank; upgrading and reconstruction
- 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.
Last Update:
2023-06-17