NOVELTY - Microalgae culture device comprises an anaerobic digester (110) for anaerobic digestion of animal manure; a membrane bioreactor (MBR) tank (120) for separating an effluent and sludge from biologically treated anaerobic digestive fluid of the anaerobic digester; a microalgae culture tank (130) for culturing microalgae using nutrients and residual nitrogen contained within the effluent of the MBR tank; and a microalgae separation membrane (140) for separating the treated water and microalgae waste water of the microalgae culture tank.    USE - Used as a microalgae culture device.    ADVANTAGE - The microalgae culture device reduces the operating cost, allows continuous and high density culture of microalgae, and enables to increase the removal efficiency of nitrogen and phosphorus.    DETAILED DESCRIPTION - Microalgae culture device comprises an anaerobic digester (110) for anaerobic digestion of animal manure; a membrane bioreactor (MBR) tank (120) for separating an effluent and sludge from biologically treated anaerobic digestive fluid of the anaerobic digester; a microalgae culture tank (130) for culturing microalgae using nutrients and residual nitrogen contained within the effluent of the MBR tank; and a microalgae separation membrane for separating the treated water and microalgae waste water of the microalgae culture tank, where nitrogen and phosphorus contained in the anaerobic digestive fluid is separated in the form of sludge by the MBR tank, and part of nitrogen and phosphorus contained in the anaerobic digestive fluid is supplied to the microalgae culture tank. An INDEPENDENT CLAIM is also included for culturing microalgae, comprising (i) generating an anaerobic digestive Fluid by anaerobic digestion of animal manure, (ii) separating the effluent and sludge from biologically treated anaerobic digestive fluid of the anaerobic digester using MBR tank, (iii) culturing microalgae using nutrients and residual nitrogen contained within the effluent of the MBR tank, and (iv) separating the treated water and microalgae waste water of the microalgae culture tank, where the biologically treated sludge and effluent are separated using MBR bank from the anaerobic digestive fluid, in which nitrogen and phosphorus in the anaerobic digestive fluid are separated in the form of sludge, and part of nitrogen and phosphorus contained in the anaerobic digestive fluid is supplied to the microalgae culture tank.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the microalgae culture device (Drawing includes non-English language text).    Anaerobic digester (110)    MBR Tank (120)    Separation membrane (121)    Microalgae culture tank (130)    Microalgae separation membrane (140)