BAIChun-yin,ZHANGQing-xi,ZHAOShuai,et al.Application of BAF, High-efficiency Sedimentation Tank and DDBF in Upgrading of WWTP for Quasi-Ⅳ Standard[J].China Water & Wastewater,2023,39(12):119-124.
Application of BAF, High-efficiency Sedimentation Tank and DDBF in Upgrading of WWTP for Quasi-Ⅳ Standard
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第12期
Page:
119-124
Column:
Date of publication:
2023-06-17
- Keywords:
- biological aerated filter; high-efficiency sedimentation tank; denitrification deep-bed filter; upgrading and reconstruction
- Abstract:
- A wastewater treatment plant (WWTP) in Guangxi, with a total treatment capacity of 5.5×104 m3/d, adopts the process of DE oxidation ditch, fiber rotary disk filter, A2/O, and filter cloth filter, according to the first level A standard. In order to improve the effluent quality to quasi-Ⅳ criteria of Environmental Quality Standards for Surface Water (GB 3838-2002), the advanced treatment processes such as biological aerated filter (BAF), high?efficiency sedimentation tank, denitrification deep-bed filter (DDBF), and ozonation contact reactor are built. Even if affected by the continuous excess of the influent quality, the nitrogen and phosphorus removal remained stable, the effluent quality met the quasi-Ⅳ standard, and the average reduction efficiency of NH3-N, TN, TP, SS reached 85.48%, 51.31%, 76.86%, 70.21%, respectively. After the project was put into operation, it not only solved the problem of tail water discharge from the WWTP, but also effectively improved the water environment quality of the basin, which lays an important foundation for ecological restoration and protection of mangroves.
Last Update:
2023-06-17