Following up on Colin: I ...
Published by Gerd Teunissen, technical director at INTERAGUA, Lda.
Following up on Colin: I think it's much simpler than the Mohlmann SVI stuff. They probably have 180, 220 and 350 ml settled MLSS per liter after 30 minutes of settling; Vaibhav please confirm or explain. If oxygen levels in A1 and A2 allow, here the sludge concentration should be increased through recirculation, which would result in a better performance and lower excess sludge production.