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.
BAF+高效沉淀池+反硝化深床滤池用于准Ⅳ类提标
- Title:
- Application of BAF, High-efficiency Sedimentation Tank and DDBF in Upgrading of WWTP for Quasi-Ⅳ Standard
- Keywords:
- biological aerated filter; high-efficiency sedimentation tank; denitrification deep-bed filter; upgrading and reconstruction
- 摘要:
- 广西某污水处理厂总处理规模为5.5×104 m3/d，采用DE氧化沟+纤维转盘滤池及A2/O+滤布滤池工艺，按一级A标准建设。为使出水水质提升至地表水准Ⅳ类标准，新建曝气生物滤池（BAF）、高效沉淀池、反硝化深床滤池、臭氧接触池等深度处理工艺，即使受到进水水质连续超标影响，仍然具有较好的脱氮除磷稳定性，出水水质达到地表准Ⅳ类标准，其中NH3-N、TN、TP、SS平均削减效率分别达到85.48%、51.31%、76.86%、70.21%。该工程投运后既解决了污水处理厂尾水排放问题，又有效地改善了该流域的水环境质量，为生态修复和红树林保护奠定了重要基础。
- 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.
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