Aquaculture management

Aquaculture is a booming business all over the world, impacting the water environment and being heavily dependent on ambient aquatic conditions. At DHI we have many years of experience in aquaculture and our consultancy can be of great use before initiating as well as in an already existing aquaculture production.

We assist with initiating a production such as preparation of applications, selection of production site, modelling and design of production resulting in an environmental efficient aquaculture production. Furthermore we assist with approval of production increase and relocation of production facilities.

Aquaculture is a highly environmental efficient method for food production, but nevertheless, some impacts can be seen in the locations around fish farms. We have developed cost efficient tools for assessing these impacts. The tools include modelling the area of impact, mapping of the benthic community and biomonitoring in the water phase. These methods involve actual and theoretical concentrations as well as the site specific production impact on the surrounding water environment.

The production depends on the ambient water which exposes the facilities to high risk. DHI’s operationally forecast includes highly relevant parameters for the daily operation of the facility such as, water levels, water flows, temperature, salinity, oxygen and turbidity. Furthermore the forecasts on conditions as extreme wave and current regimes, toxic algal blooms, toxic chemical spills, low oxygen, rapid fluctuations of salinity and temperature, ice conditions etc. are highly valuable information for the fish farmer.

We provide model tools for modelling of the fish farm processes, simulating advection dispersion processes in fish tanks/ponds and simulations of the approximate behaviour of fish individuals. Moreover 3D eutrophication modelling can be used as prediction of the future water quality of the aquaculture surroundings.

Furthermore we assist with feed regime optimisation and design of biological and ecological treatment methods for the waste from flow through fish farms, and furthermore supplies the knowledge for designing zero-discharge fish farms. This clean technology knowledge has been obtained through experience with own demonstration scale facilities, among other the first pilot scale experimental eel farm in Europe.