Treatment device for dust removal of boiler water film dust removal sewage

The utility model provides a treatment device for dust removal of boiler water film dust removal sewage, which is capable of recycling sewage. The treatment device comprises a sewage ditch, a primary sedimentation tank, a secondary sedimentation tank, a tertiary sedimentation tank and a clean water basin, wherein one end of the sewage ditch is connected with a water outlet of a boiler water film dust collector; the other end of the sewage ditch is connected with the primary sedimentation tank; the primary sedimentation tank is communicated with the secondary sedimentation tank; the secondary sedimentation tank is communicated with the tertiary sedimentation tank; the tertiary sedimentation tank is communicated with the clean water basin; the clean water basin is communicated with a water inlet of the boiler water film dust collector; an automatic alkali adding device is arranged in the sewage ditch, and comprises a pH value tester, an electric ball valve and a lye tank; and alkali wastewater is accommodated in the lye tank. The treatment device has the beneficial effects that the sewage can be recycled after being treated, and is not discharged outside; the automatic alkali adding device is capable of automatically adding an alkali liquor to neutralize the sewage, and preventing corrosion of water film dust removal equipment and circulating pipeline equipment; and the sewage is neutralized employing the alkali liquor in a sewage station, so that the sewage treatment cost is reduced.