With a low inflow load and aged sludge, could excessive sludge discharge easily lead to the proliferation of filamental bacteria?
Thread Content
The COD load in the inlet water is low, and the levels of nitrogen and phosphorus are also very low; the nitrogen and phosphorus levels in the inlet water meet the **Class A discharge standards**. Currently, the sludge is showing signs of aging, and we plan to gradually reduce its concentration. However, we are concerned that if this reduction is not managed properly, it could lead to an overgrowth of filamental bacteria. What issues need to be taken into account during this process to prevent such overgrowth? We seek guidance!
1. Maintain a certain concentration of activated sludge, control the amount of sludge removed daily, and manage the recirculation ratio properly. 2. Control the sludge load by adjusting the influent and return sludge. 3. Maintain the sludge age constant.
This post was last edited by CoCo070563 on 2015-12-12 at 13:06. No, it’s possible to remove sludge, but N and P need to be replenished; if there is a shortage of carbon source, it also needs to be added, and the dissolved oxygen level should not be too low. I hope this is helpful to you.