Coalescing, filtering and purifying treatment device for sulfur-containing and iron-containing produced sewage of oil field

The utility model relates to the technical field of oil field ground gathering and transportation sewage treatment, in particular to an oil field sulfur-containing and iron-containing produced sewage coalescence, filtration and purification treatment device which comprises a pretreatment tank, a coalescence reaction tank, a coalescence filter and a fan, an aerator is arranged at the lower part in the pretreatment tank, an air inlet at the bottom of the aerator is fixedly communicated with an aeration pipe, and an air inlet pipeline is fixedly communicated between the air inlet end of the aeration pipe and the air outlet end of the fan; a coalescence reaction water inlet pipeline is fixedly communicated between the water outlet of the water distribution water outlet pipe and the water inlet of the coalescence reaction tank, and an interface coalescence agent pipeline is fixedly communicated on the coalescence reaction water inlet pipeline. The device is reasonable and compact in structure, convenient to use an