NOVELTY - A Chlorella microorganism fuel battery reactor comprises anode chamber (1), cathode chamber (2), anode electrode, cathode electrode, lead wire (5), load (6), proton exchange membrane (7), and three-phase separator. The anode chamber and the cathode chamber are separated by proton exchange membrane. The cavity of anode chamber is equipped with an anode electrode. The cathode chamber of the inner chamber is provided with cathode electrode.    USE - Chlorella microorganism fuel battery reactor used for treating high concentration organic wastewater (claimed).    ADVANTAGE - The reactor can process high-concentration organic wastewater at a low cost and can obtain clean water, and at the same time can electrically driven drill for recycling energy and biological diesel oil, thus realizing real waste resource utilization.    DETAILED DESCRIPTION - A Chlorella microorganism fuel battery reactor comprises anode chamber (1), cathode chamber (2), anode electrode, cathode electrode, lead wire (5), load (6), proton exchange membrane (7), and three-phase separator. The anode chamber and the cathode chamber are separated by proton exchange membrane. The cavity of anode chamber is equipped with an anode electrode. The cathode chamber of the inner chamber is provided with cathode electrode. The anode electrode and the cathode electrode are connected by a lead to anode chamber and cathode chamber of external circuit that is connected with load two ends of cathode chamber side of the bottom opening that is provided with a water inlet. The top side is set with water outlet. The anode chamber is provided with water inlet (8). The bottom side opening is provided with reflux port (9), and the top part is provided with opening return nozzle (10), a water outlet (11) and an air outlet. The separator is set in the anode chamber. An INDEPENDENT CLAIM is included for use of Chlorella microbial fuel cell reactor for treating high concentration organic wastewater, comprising starting the reactor under room temperature, passing domestic sewage in anode of microbial fuel cell, water as bacteria source and anode liquid respectively through water inlet of anode chamber, adding Chlorella to the cathode chamber, and passing solution of phosphoric acid buffer salt and BGll culture medium formula between the anode electrode and cathode electrode connected with resistance voltage monitoring change condition of anode of different initial chemical oxygen demand (COD) concentration gradually domesticated anode, where concentration gradient respectively is 1000, 1500, 2000, 2500, 3000, 3500, and 4000 mg/L. The final initial COD concentration battery generating electricity is 4000 mg/L which is stable to finish the starting of Chlorella microbiological fuel cell. The wastewater is processed through water inlet of anode chamber. The electric energy of Chlorella in cathode chamber is introduced through photosynthesis to the cathode chamber to supply oxygen by reflux inlet of the anode chamber from upper to lower part. After the anode continuously absorb organic substance and removes nitrogen and phosphorus, the Chlorella passes through the water outlet of the anode chamber, at last obtaining the discharge standard of wastewater discharged from water outlet of cathode chamber.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic view of Chlorella microorganism fuel battery reactor.