Integrated device for treating black and odorous water

The invention belongs to the field of environmental engineering, and particularly relates to an integrated device for treating black and odorous raw water, according to the device, a Co/Mn doped g-C3N4 photocatalyst functionalized by biogas residue charcoal is utilized, electrolytic flotation is combined, particulate pollutants and soluble pollutants in the black and odorous raw water can be efficiently treated at the same time, and recovery of the catalyst is achieved. A black and odorous raw water sample is actually treated, and related indexes of treated water quality are as follows: dissolved oxygen (DO) is greater than or equal to 4mg/L, ammonia nitrogen content (NH3-N) is less than or equal to 1.2 mg/L, effluent COD content is less than or equal to 25mg/L, and sulfide content is less than or equal to 0.3 mg/L. The water quality treated by the device meets the national IV-class water standard and is far beyond the first-class A standard of sewage discharge of a municipal sewage treatment plant. The devic