Since the purpose of this study was to assess the overall treatment performance of the system over a longperiod of operation, as well as its dependence on the seasonality, the treatment plant was monitored from July 2012 to May 2013 on a weekly basis. Grab
samples weretakenthesamedayoftheweek(atabout10pm)by
taking about1.5Lofsampleattheeffluentofthedifferenttreat-
ment units(Fig. 1).