The integration of microalgae photobioreactors in a recirculation system for low water discharge mariculture
In this thesis a potential conceptual design of a recirculation system not only with water processing but also with an enhanced nutrient recycling is presented. The underlying principle of the recirculation system was based on that of an artificial ecosystem and combined several trophic levels (fish, macroalgae, microalgae, worms) (MARE = Marine Artificial Recirculated Ecosystem). The main goal of this thesis was the development of a continuous photobioreactor system for cultivation of Nannochloropsis spec. based on dissolved nutrients of the recirculation system. Furthermore, the efficacy of ozone and foam fractionation was investigated regarding removal of bacteria and particles from effluents of a marine recirculation system.