WUBo,YEChang-ming,WANGXiao-lin,et al.Application of Upflow DDBF in Upgrading and Reconstruction of a WWTP[J].China Water & Wastewater,2022,38(4):103-108.
Application of Upflow DDBF in Upgrading and Reconstruction of a WWTP
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第4期
Page:
103-108
Column:
Date of publication:
2022-02-17
- Keywords:
- wastewater treatment plant; upgrading and reconstruction; modular water treatment equipment; denitrification deep bed filter(DDBF)
- Abstract:
- The first phase of a wastewater treatment plant (WWTP) originally adopted SBR and fiber rotary disc filter as the main process. The actual effluent TP occasionally exceeded the standard and TN seriously exceeded the standard. After upgrading reconstruction, it was required that the main effluent quality indexes could reach level V of Environmental Quality Standards for Surface Water (GB 3838-2002) (TN≤15 mg/L). In the upgrading reconstruction project, the modular water treatment equipment of upflow denitrification deep bed filter (DDBF) is added at the back end of the existing SBR process. The effluent COD, BOD5, TN, TP and SS are no more than 30 mg/L, 6 mg/L, 12 mg/L, 0.3 mg/L, and 5 mg/L, respectively, which reached level quasi-Ⅳ of Environmental Quality Standards for Surface Water. The results showed that the upflow DDBF had good nitrogen and phosphorus removal effect, especially for nitrogen that the maximum TN removal amount was as high as 29.4 mg/L, and the corresponding denitrification load reached 2.08 kgNO3--N/(m3·d).
Last Update:
2022-02-17