YANG Qing,GUO Shu-qin,CHEN Wei-nan.Design of Relocation of Tianjin Xianyanglu Sewage Treatment Plant Upgraded to Quasi-Ⅳ Standard[J].China Water & Wastewater,2021,37(12 12):88-92.
Design of Relocation of Tianjin Xianyanglu Sewage Treatment Plant Upgraded to Quasi-Ⅳ Standard
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
12 12
Page:
88-92
Column:
Date of publication:
2021-06-17
- Abstract:
- Treatment capacity of Tianjin Xianyanglu sewage treatment plant in the first phase relocation and upgrading project is 45×104 m3/d, and treatment capacity of the recycled water plant of the first phase is 5×104 m3/d, in which the effluent is required to meet class A limitations of Tianjin local Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (DB 12/599-2015). The main process of sewage treatment consists of rapid sedimentation tank, multi-stage AO reaction tank, secondary sedimentation tank, denitrification filter, high-efficiency sedimentation tank, V-shaped filter, ozone catalytic oxidation and UV disinfection. After the recent commissioning, effluent indices of the sewage treatment plant were better than those in the design standard. In the process of operation, when the amount of sewage increased greatly, good treatment performance was achieved, reflecting a good impact resistance load capacity of the process. The multi-stage AO process showed high organic matter removal and nitrogen removal efficiency in the operation. The high-efficiency sedimentation tank and V-shaped filter process could ensure that TP and SS in the effluent meet the discharge standard. The operation mode could be adjusted flexibly according to the actual situation of the water quality and quantity of the influent in the subsequent operation, so as to reduce the operation cost on the premise of the effluent water quality meeting the discharge standard.
Last Update:
2021-06-17