Increased focus on water quality
As the aquaculture industry becomes ever more intensive, the focus on water quality in the rearing units will also increase. Higher production densities will also increase the requirements for optimal water quality, because of the degeneration in quality when the water flows through the production unit.
The importance of water quality is independent of the type of rearing unit and location of the production facilities. If using open production units in the sea such as sea cages, it will of course be more difficult to treat the water to improve quality, even though this is starting to happen. On land-based fish farms with control of both the inlet and outlet, water treatment to improve the water quality will be much easier to perform. The increase in aquaculture production based on water re-use systems will focus attention on water treatment to improve quality.
During the past few years, the focus on the environmental impacts of the aquaculture industry have increased. In future, more stringent requirements will be set to reduce these impacts. It is possible to reduce the discharge from the facility by optimal production management, and also by treating the outlet water from closed production facilities. It will also be important that production is adapted to site capacity, and of course that it is sustainable.