An alternative for the treatment of the fish processing
effluents is the use of membrane separation
processes, in particular ultrafiltration (UF) and
nanofiltration (NF). The outstanding advantages of
both processes over the coagulation/flocculation
and DAF processes are the good quality of the
permeate which can be recycled into the plant,
besides the possibility of simultaneously recover
and concentrate the proteins. Another important
advantage of pressure-driven membrane processes
is that they are particularly suitable for the concentration
and purification of sensitive biological
substances of high added value (e.g. proteins,
enzymes, and hormones) under mild conditions
without using heat or chemicals. Moreover