Spirostomum teres

Free-floating ciliates

  • 150 – 400 µm
  • worm-shaped, very flexible ciliate
  • entire body ciliated, lateral, trough-shaped mouth area to the middle of the body
  • a large vacuole at end of body

 

In activated sludge:

  • with higher sludge load and oxygen concentration < 1 mg/l