other plants (Pijuan et al., 2011). Also, when the effluent criterium is
less critical during start-up, the time to reach the design sludge
mass can be significantly reduced by increasing the COD load. It
should be noted that a treatment plant is designed for the highest
load at the coldest temperature. For this reason the required
treatment capacity can be achieved during most of the year, even if
full granulation is not yet reached.