纯氧曝气系统污泥膨胀原因及控制

Cause and Control of Sludge Bulking in Pure Oxygen Aeration System

通过对天津石化供排水厂纯氧曝气系统污泥膨胀前后的运行状况进行分析 ,认为长时间低负荷运行后受到冲击、污泥老化、二沉池局部缺氧是导致污泥膨胀的原因 ,并给出了相应的预防和控制措施。

The cause of sludge bulking was investigated by analyzing the operating status of pure oxygen aeration system from beginning to the end of the sludge bulking in Tianjin Petrochemical Water Supply and Drainage Works.The results show that the shocked sludge system under long time low load running,sludge aging and the lack of oxygen in part of secondary settling tank result in sludge bulking.The corresponding prevention and control approaches were proposed in detail.