▎ 摘　　要

NOVELTY - Method for treating wastewater containing heterogeneous biomass using photocatalytically coupled microorganism involves (a) preparing complex photocatalyst, (b) preparing bacterial solution and (c) performing photocatalytic coupling and microbiological treatment of wastewater containing heterogeneous biomass by in wastewater containing heterogeneous organisms, based on the mass ratio of chemical oxygen demand (COD), nitrogen and phosphorus of 200:5:1, adding ammonium sulfate, potassium dihydrogen sulfate and 0.8-1 g/l complex photocatalyst and 15-30 ml/l bacterial solution (pH 6-7), turning on the light source (full wavelength range of visible light), using the coupling system to react for 8-12 hours under the stirring of a magnetic stirrer and after the reaction is completed, recovering and reusing product by a magnetic recovery device. USE - The method is useful for treating wastewater containing heterogeneous biomass using photocatalytically coupled microorganism. ADVANTAGE - The method reduces occupied area and investment operation cost and treats wastewater with synergistic effect and higher effect than the sum of photocatalysis and microbiological system alone. DETAILED DESCRIPTION - Method for treating wastewater containing heterogeneous biomass using photocatalytically coupled microorganism involves (a) preparing complex photocatalyst by weighing 0.1 g graphene oxide (GO), determining amount of n-iron(II,III) oxide (Fe3O4) and n-zinc oxide (ZnO), where the GO/nFe3O4/nZnO ratio of 1:20:30, adding into a 250 ml beaker, adding 100 ml deionized water, placing the beaker on a magnetic stirrer, stirring vigorously for 2 hours, performing ultrasonic dispersion for 40 minutes, rapidly heating and compounding at 200 degrees C, (b) preparing bacterial solution by taking an aerobic activated sludge supernatant domesticated by middle-stage wastewater of pulping, inoculating into beef extract peptone solid medium under sterile environment, placing in a biochemical incubator at 25-30 degrees C for 24-48 hours to grow colonies, picking 4 loops of colonies on the culture medium, inoculating in 10 ml sterile water and shaking well to prepare a bacterial solution of 106 colony forming unit (cfu)/ml, and (c) performing photocatalytic coupling and microbiological treatment of wastewater containing heterogeneous biomass by in wastewater containing heterogeneous organisms, based on the mass ratio of chemical oxygen demand (COD), nitrogen and phosphorus of 200:5:1, adding ammonium sulfate, potassium dihydrogen sulfate and 0.8-1 g/l complex photocatalyst and 15-30 ml/l bacterial solution (pH 6-7), turning on the light source (full wavelength range of visible light), using the coupling system to react for 8-12 hours under the stirring of a magnetic stirrer and after the reaction is completed, recovering and reusing product by a magnetic recovery device.