Before the fish meal is dried, the raw materials are pressed to recover oil and to reduce the amount of water, which facilitates the drying process. This water loaded with protein is discharged directly into the WWTP and therefore requires its decluttering.
Installing nano filtration unit will reduce the amount of BOD and, as a result, the purified water discharged into the pipeline will improve the performance of the WWTP. In addition, the company estimates the addition of at least 30% concentrated protein which will allow the production of high quality fish meal.