JIANGChun-jie.Application of Multi-mode A2O and V-type Denitrification Filter in Wastewater Treatment[J].China Water & Wastewater,2023,39(18):71-76.
Application of Multi-mode A2O and V-type Denitrification Filter in Wastewater Treatment
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第18期
Page:
71-76
Column:
Date of publication:
2023-09-17
- Abstract:
- The design scale of a wastewater treatment plant expansion project in Nanjing is 10×104 m3/d, and it is mainly for the treatment of domestic sewage. The design effluent quality shall comply with the first level A limit specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002), and the space for effluent quality improvement is reserved. Based on the analysis of the current influent quality, treatment process and operation of the wastewater treatment plant, the process of aerated grit chamber, multi?mode A2O, high-efficiency precipitation, V-type denitrification filter and sodium hypochlorite disinfection was adopted to realize the treatment target. The multi-mode A2O process realized the flexible switching of operation modes. In addition, the V-type denitrification filter removed the suspended solids through interception, and showed good TN removal performance. The results indicated that the nitrogen removal performance of the system had a large space for effluent quality improvement and was capable of meeting stricter TN discharge standards. The operational results showed that the combined process had good adaptability, and the effluent quality reached and was even superior to the design discharge standard. The total investment of the project was about 399 million yuan, the treatment cost was 1.06 yuan/m3, and the actual operating power consumption was between 0.28 and 0.30 kW·h/m3.
Last Update:
2023-09-17