Lü Wen-lin,SUN De-shou,WANG Wei-wei,et al.Application of Rotating Biological Contactors in Reconstruction and Expansion Project of a Municipal Wastewater Treatment Plant[J].China Water & Wastewater,2021,37(4 4):82-86.
Application of Rotating Biological Contactors in Reconstruction and Expansion Project of a Municipal Wastewater Treatment Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
4 4
Page:
82-86
Column:
Date of publication:
2021-02-17
- Abstract:
- The original design capacity of a wastewater treatment plant in Pingliang City is 5.0×104 m3/d， using the traditional A2O+advanced treatment process, the capacity of this expansion reaches 8.5×104 m3/d. In view of the shortage of land and high concentration of influent total nitrogen, the anoxic zone adopts rotating biological contactors to enhance the denitrification performance, the aerobic zone is transformed into limited aeration zone, and a new primary sedimentation tank is built to ensure the design effluent target. Actual operation results showed that effluent quality stably met the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002) under low temperature and low C/N ratio. The total investment of the project was 107.931 7 million yuan, and the direct operation cost was 0.72 yuan/m3.
Last Update:
2021-02-17