Refractory organic pollutants with photo- excited holes as electron acceptors

A method for enhanced bio-treatment of refractory organic pollutants with photo-excited holes as electron acceptors, comprising the following steps:

• 1-1) placing a composite semiconductor-coated carrier material into a reactor, introducing wastewater into the reactor inoculated with anaerobic sludge, and allowing the composite semiconductor-coated carrier material to be immersed in the wastewater, wherein the composite semiconductor-coated carrier material comprises a conductive carrier and composite semiconductor materials loaded on the conductive carrier, wherein the composite semiconductor materials comprise BiVO4/FeOOH;
• 1-2) carrying out habituated culture on the anaerobic sludge for a period of time, and loading a biological membrane on a surface of the composite semiconductor-coated carrier material, to construct a photo-excited hole-enhanced bioreactor;
• and
• 1-3) treating the refractory pollutants in the wastewater by utilizing the reactor under irradiation,
• wherein the conductive carrier comprises carbon paper, and the reactor comprises a quartz reactor or a glass reactor,
• wherein the composite semiconductor-coated carrier material comprises BiVO4/FeOOH@CP, and
• wherein the BiVO4/FeOOH@CP is prepared through a method comprising:
• preparing BiOI@CP by electrodeposition, converting the BiOI@CP into BiVO4@CP, immersing the BiVO4@CP in a solution of FeCl3·6H2O for a period of time, and rinsing with deionized water, to obtain the BiVO4/FeOOH@CP.