LIAOJing-meng,LIUBo,ZENGSi-yu,et al.Design of a Large Wastewater Treatment Plant Upgrading and Reconstruction Project without Stopping Production[J].China Water & Wastewater,2023,39(20):72-76.
Design of a Large Wastewater Treatment Plant Upgrading and Reconstruction Project without Stopping Production
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第20期
Page:
72-76
Column:
Date of publication:
2023-10-17
- Abstract:
- The original treatment process of Chengdu No.9 reclaimed water plant with treatment scale of 100×104 m3/d consists of multi-mode A2O and fiber filter. The upgrading and reconstruction project needs to upgrade the discharge standard from first level A limit to the limit specified in Discharge Standard of Water Pollutants in Minjiang River and Tuojiang River Basin in Sichuan Province (DB 51/2311-2016) without stopping production. The design selected the scheme of setting high-density sedimentation tank and denitrification deep bed filter after the secondary sedimentation tank through the comprehensive analysis of the current structures of the wastewater treatment plant and the measured influent and effluent quality, in which the denitrification deep bed filter was constructed by a combination of new construction and reconstruction, thus solved the land shortage problem. In the construction process, the project adopted the methods of phased implementation and non-stop production pipe-touching construction techniques, and successfully realized the upgrading without stopping production. The effluent quality is stable and better than the discharge standard after the project is put into operation.
Last Update:
2023-10-17