Zoogloea bulking is also known as viscous or slime bulking and can cause the activated sludge to have a slimy or jelly-like consistency and texture. There can be several reasons for this:
- High food to microorganism ratio with a high amount of soluble organic compounds that are easy to degrade.
- Low pH
- Nutrient deficiency (Nitrogen or Phosphorus).
Fixing slime bulking depends on the cause(s); remedies can include adjusting the pH, adding missing macronutrients, wasting slowly or adding in good mixed liquor from another plant. Depending on the situation we recommend Vitastim Grease or Qwik-Zyme L.