Abstract:

The design, modification measures and operation of the upgrading and reconstruction project of the Shanghai Tianshan Water Purification Plant were introduced. The project was designed to use a modified two-stage activated sludge process. The running results showed that the removal rates of COD, BOD₅, NH₄⁺-N, TN, SS and TP in the modified process were stable at 87.8%-90.7%, 93.2%-94.7%, 91.3%-96.9%, 64.2%-78.8%, 91.7%-93.5% and 78.0%-86.4%, respectively. After the reconstruction, the effluent quality indicators were significantly lower, which were superior to the first-level A criteria, specified in the Pollutant Discharge Standard of Urban Sewage Treatment Plant (GB 18918-2002), except for TP. The modified process exhibits a stable and effective operation and has high resistance to shock loading.

Key words: wastewater treatment plant, upgrading and reconstruction, nitrogen and phosphorus removal, modified two-stage activated sludge process

摘要：

介绍了上海天山水质净化厂升级改造工程的设计、改造措施及运行情况。该污水处理厂改造工程设计采用改良型两段活性污泥工艺。实际运行结果表明，改良后的污水处理工艺对污水中COD、BOD₅、NH₄⁺-N、TN、SS和TP的去除率分别稳定维持在87.8%~90.7%、93.2%~94.7%、91.3%~96.9%、64.2%~78.8%、91.7%~93.5%和78.0%~86.4%，各项出水水质指标相较改造前都明显降低，除TP外，其余各项水质指标均优于《城镇污水处理厂污染物排放标准》（GB 18918-2002）的一级A标准。工艺运行稳定高效、抗冲击负荷能力强。

关键词: 污水处理厂, 升级改造, 脱氮除磷, 改良型两段活性污泥法

CLC Number: 

• X703