High-concentration sulfate radical sewage treatment system and process

The invention discloses a high-concentration sulfate radical sewage treatment system and process, the high-concentration sulfate radical sewage treatment system comprises an acidification tank, an anaerobic UP reactor, a degassing tank, an inclined plate sedimentation tank, an anaerobic water outlet tank and an aeration tank which are connected in sequence, a sludge bulking bed is arranged at the bottom of an inner cavity of the anaerobic UP reactor, and the sludge bulking bed is provided with a plurality of floc sludge; a through type water distribution pipe group is arranged at the lower part of the inner cavity of the anaerobic UP reactor and is arranged above the sludge bulking bed; a water outlet module is arranged at the top of an inner cavity of the anaerobic UP reactor, a water outlet pipe corresponding to the water outlet module is arranged on the outer side of the upper end of the anaerobic UP reactor, and the tail end of the water outlet pipe is connected to the degassing tank; an air blower assemb