Integrated production of long chain polyunsaturated fatty acids (PUFA)-rich Schizochytrium biomass using a nutrient supplemented marine aquaculture wastewater

S. limacinum in continuous culture mode (D = 0.013 h−1) enabled significant reductions (<90%) in phosphorous, nitrogen and ammonia concentrations of marine aquaculture wastewater and efficiency of wastewater treatment was further improved in retention culture operating at D = 0.062 h−1. This system would be well suited to treating nutrient concentrated effluent from sludge sedimentation/dewatering tanks in recirculating aquaculture systems (RAS). The treatment capacity of the reactor was considerable and in this current study, 420 g N, 190 g P and 10 g total NH3 day−1 m−3 reactor could be removed using the retention culture system.