Expressway service area sewage comprehensive treatment device

The invention belongs to the technical field of sewage treatment. An expressway service area sewage comprehensive treatment device is characterized by comprising a fermentation pool, a regulating pool, an aeration vertical flow wetland, a horizontal baffled flow wetland and a comprehensive biological pond; excrement of an excrement pool and catering sewage in an expressway service area are introduced into the fermentation pool through a Z-shaped first concealed pipe, and flushing sewage of a urine pool in the expressway service area is introduced into the regulating pool through a second concealed pipe; biogas residue at the bottom of the fermentation pool is discharged outside through a submersible sewage pump, and fermenting liquid in the fermentation pool overflows to the regulating pool through a Z-shaped concealed pipe; a submerged pump is arranged in the regulating pump and is connected with the aeration vertical flow wetland through a fourth concealed pipe, the aeration vertical flow wetland is connected with the horizontal baffled flow wetland through a fifth concealed pipe, the horizontal baffled flow wetland is connected with the comprehensive biological pond through an open channel, and the effluent of the comprehensive biological pond is discharged up to the standard or recycled. The expressway service area sewage comprehensive treatment device is simple in structure, low in energy consumption and suitable for high ammonia-nitrogen sewage characteristics and water quality and unstable water quantity in the expressway service area.