Effluents from land based marine farms: nature, treatment, valorisation, modelisation. Applications to fish and shrimp rearing

• Main Authors: Hussenot, Jerome, Lefebvre, Sebastien, Martin, Jean-louis
• Format: Conference Object
• Language: English
• Published: Man and Coastal Areas – Towards a sustainable Aquaculture, May 2000 2000
• Subjects: fish; shrimp; pond management; effluents; treatment; Turbot
• Online Access: https://archimer.ifremer.fr/doc/00016/12728/9650.pdf; https://archimer.ifremer.fr/doc/00016/12728/

Fish culture (seabass, turbot.) on the French metropolitan coast, and shrimp culture in the overseas territories (essentially New Caledonia and Tahiti) are subject to a regular development through land based farms. Three thematic of research on aquaculture ponds are carried out in CREMA-L’Houmeau, in collaboration with producers. The aim of the first one is to determine the optimal rearing conditions (stocking density, water renewal rate, input of oxygen, rate of feeding.) which allow to minimise the quantity of wastes for a similar final biomass. The second part aims to reduce the nutrient loading in the effluent, through open-air treatments: sedimentation ponds, foam fractionation, mass production of phytoplankton, and rearing of molluscs on the produced phytoplankton. The third part concerns research aiming to model the “ production - treatment - valorisation ” relationships.