Regulation of DO and pH value of the aeration tank,using a homogeneous adjusting tank and controlling its level,properly adding a nutrient salt are the main measures for controlling the floating upward of the activated sludge.

• 控制活性污泥上浮的主要措施有 :调节曝气池的DO、pH值 ,采用均质调节池并控制进水水质及液位 ,合理投加营养盐等