NOVELTY - A sewage/wastewater treatment apparatus has a settling tank for removing foreign substance with suspended solids and organic material included in processing water of a bioreactor. The bioreactor performs preprocessing of inflow water and stabilizes anaerobic and aerobic condition of the inflow water. A physicochemical treatment part receives the processing water that is made to flow from the settling tank and makes the processing water to react with an elution material for changing phosphorus in the inflow treated water, to solid material and elutes the material solidified with a coagulant.    USE - Sewage/wastewater treatment apparatus.    ADVANTAGE - The apparatus minimizes environmental contamination through reduction of generated chemical sludge, and ensures economic effect through reuse of the eluted coagulant.    DETAILED DESCRIPTION - A sewage/wastewater treatment apparatus has a settling tank for removing foreign substance with suspended solids and organic material included in processing water of a bioreactor. The bioreactor performs preprocessing of inflow water and stabilizes anaerobic and aerobic condition of the inflow water. A physicochemical treatment part receives the processing water that is made to flow from the settling tank and makes the processing water to react with an elution material for changing phosphorus included in the inflow treated water to a solid material and elutes the material solidified with a coagulant. The coagulant and phosphorus are collected from the solid material and separated. A cohesion reaction flask is utilized for condensing the phosphorus by using the coagulant. A solid-liquid separation tank discharges high quality water separated from the solid material and ejects the solid material from reaction water, where the reaction water includes the solid material cohered in the cohesion reaction flask with the coagulant. A tub receives the solid material ejected from the solid-liquid separation tank. A phosphorus crystallization bath precipitates the phosphorus injecting crystalline substance, where the phosphorus crystallization bath is connected to the tub. The solid material from the solid-liquid separation tank is ejected through a micro-bubble creating device. The micro-bubble creating device generates micro bubbles. A collecting tube is installed on a lower-side of the solid-liquid separation tank. An air intake tube is equipped on an inner side of the solid-liquid separation tank. An impeller is linked with a drive motor and protruded to an outer side of the collecting tube. An INDEPENDENT CLAIM is also included for a sewage/wastewater treatment method.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a sewage/wastewater treatment apparatus. `(Drawing includes non-English language text)`