How to deal with a high settling ratio in the aerobic tank
Thread Content
Our plant has two systems. During the recent maintenance on one of the systems, the sludge from System 1 was transferred to System 2. After the maintenance was completed, it was found that the sludge sedimentation ratio in System 2’s aerobic tank was between 40 and 50, while the DO level dropped to around 1. Sludge was then transferred back from System 2 to System 1, but the effect was not significant; the sludge remained swollen. Do any of the experienced colleagues have any good suggestions? I would appreciate some guidance.
Doesn’t anyone know? Please give me some advice.
What is the sludge concentration? The settlement ratio alone cannot explain the issue. A possible reason is an increase in sludge concentration with unchanged aeration volume, resulting in insufficient oxygen supply.