ZHENG Wei-bo,SHAN Yi-na,HU Ru-yi,et al.Application of High Efficiency Sedimentation Tank and DDBF in Upgrading and Reconstruction of a WWTP[J].China Water & Wastewater,2021,37(16 16):124-129.
Application of High Efficiency Sedimentation Tank and DDBF in Upgrading and Reconstruction of a WWTP
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
16 16
Page:
124-129
Column:
Date of publication:
2021-08-17
- Keywords:
- WWTP; upgrading and reconstruction; high efficiency sedimentation tank; denitrifying deep bed filter
- Abstract:
- The main process of the original first phase of Wenzhou Lucheng Light Industry Park wastewater treatment plant was Bardenpho and BAF, of which, the effluent COD, NH3-N, TN and TP could not stably meet the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). By adding external carbon sources, adding new equipment and optimizing operation parameters of the first phase project, the advanced treatment process of high efficiency sedimentation tank and denitrifying deep bed filter is newly built in the upgrading and reconstruction project to strengthen nitrogen, phosphorus and SS removal. The water quality of 9 consecutive months indicated that the average values of effluent COD, NH3-N, TN and TP are 21.2 mg/L, 0.85 mg/L, 9.21 mg/L, 0.23 mg/L respectively and the average removal rates are 81.4%, 94.2%, 60.6%, 88.2% respectively. All the indexes of effluent can meet and even surpass the first level A criteria.
Last Update:
2021-08-17