Analysis and suggestions on the key and difficult points of upgrading and expansing of typical urban sewage treatment plant in Jiangsu Province
The local standard"Pollutant Discharge Standard for Urban Sewage Treatment Plants"(DB32/4 440-2022)of Jiangsu Province has been officially implemented since March 28,2023,and existing urban sewage treatment plants will formally comply with this standard three years later.The urban sewage treatment plant in a certain city in Jiangsu Province is currently operating close to full capacity,and some effluent indicators are difficult to meet the requirements of the new standard.It is urgently in need of upgrading and expansion.Based on the analysis of the influent and effluent quality of the sewage treatment plant,total nitrogen(TN)has been identified as the key control indicator for this upgrade.Based on the current operational status and the reserved land for the sewage treatment plant,it was suggested to design the renovation at the existing site.Additionally,drawing from relevant engineering experiences,the principle of"expansion before renovation,and south before north"was recommended to ensure uninterrupted production during construction,providing technical references for the successful completion of the plant's renovation work.
upgrading and expansingCASS processimproved Bardenpho processTN
万方数据
维普
