NOVELTY - Collection method of phosphorus involves introducing phosphorus-containing wastewater in a sedimentation tank (11), carrying out sedimentation of the sludge component in the phosphorus-containing wastewater by solid-liquid separation, to obtain primary treated water containing phosphorus, introducing the primary treated water in a reaction tank (12), and synthesizing polyhydroxy alkanoate in a component using organic substance, discharging polyphosphoric acid in component on anaerobic conditions, and distributing the support which supported the phosphorus accumulation microbe.    USE - Collection method of phosphorus used as fertilizer source of agricultural product.    ADVANTAGE - The method enables efficient and economical collection of phosphorus.    DETAILED DESCRIPTION - Collection method of phosphorus involves introducing phosphorus-containing wastewater in a sedimentation tank, carrying out sedimentation of the sludge component in the phosphorus-containing wastewater by solid-liquid separation, to obtain primary treated water containing phosphorus from the phosphorus-containing wastewater, introducing the primary treated water in a reaction tank, and synthesizing polyhydroxy alkanoate in a component using organic substance, discharging polyphosphoric acid in component on anaerobic conditions, distributing the support which supported the phosphorus accumulation microbe which has a function of accumulating phosphorus into a component on aerobic conditions to the reaction tank, setting aerobic condition inside the reaction tank, and accumulating phosphorus in the phosphorus-containing wastewater with the phosphorus accumulation microbe, and transferring and recovering the phosphorus accumulation microbes used within the reaction tank in the collection tank (13) positioned by the downstream of the reaction tank, to obtain secondary treated water by which phosphorus is removed from the phosphorus-containing wastewater. An INDEPENDENT CLAIM is included for phosphorus collection apparatus (10).    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of phosphorus collection apparatus. (Drawing includes non-English language text)    Phosphorus collection apparatus (10)    Sedimentation tank (11)    Reaction tank (12)    Collection tank (13)    Storage tank (14)