Abstract:According to the requirements in Wuxi City Drainage（Sewage）Special Plan（2010—2020）and Wuxi City Town Sewage Treatment Quality and Efficiency Improvement Action Implementation Scheme （2019—2021）, the treatment scale of a wastewater treatment plant （WWTP） in Wuxi needs to reach 250 000 m3/d in 2025, that is, an expansion of 30 000 m3/d. Due to the complex boundary conditions of the Phase V project and the extremely limited land use, it is necessary to calculate and analyze the existing treatment structures in the plant and make full use of these structures. The potential reconstruction is carried out under the limited conditions according to local conditions. Since the completion and operation of this project, the quality of the effluent has reached the standard steadily. By introducing the sewage treatment process AAO+MBR and the design ideas and parameters of the main structures, the engineering characteristics are summarized to provide the reference for the other similar projects.
