The characterization of the fish meal effluent,
both before and after the pre-treatment by MF, is
presented in Table 3. It may be concluded that the
MF cartridges battery (80,20 and 5 pm) reduced
somewhat the oil and grease content. However, a
great part of the suspended matter still remained
in the effluent after MF (visual observation), thus
a tighter MF is advisable, e.g. a cartridge battery
of pore sizes 20,5 and 1 pm, in order to get rid of