Pollution caused by wastewater at seafood processing facilities includes production wastewater and domestic wastewater:
Production wastewater: generated during processing and cleaning water of factories, machinery and equipment, etc. Wastewater composition contains organic substances, suspended solids, residues, microorganisms. materials and grease. The flow and composition of seafood processing wastewater varies greatly between factories depending on the source of raw materials used, and the composition of substances used in processing (detergents, additives, …).
Domestic wastewater: generated in toilets and canteens. Wastewater composition contains residues, suspended solids, organic substances, nutrients and microorganisms.
Table of results of analysis of seafood processing wastewater quality