Coal-containing wastewater treatment device of power plant coal conveying purification station

The utility model relates to a coal-containing wastewater treatment device for a coal conveying purification station of a power plant, which comprises a primary sedimentation tank, the upper end of the primary sedimentation tank is connected with a coal-containing wastewater pipeline, the upper end of the side wall is connected with a first sewage conveying pump through a pipeline, and the first sewage conveying pump is connected to the lower part of a highway water collecting tank. The upper end of the primary sedimentation tank is connected with an inlet of a second sewage delivery pump through a pipeline, an outlet of the second sewage delivery pump is connected to the upper end of a first pre-sedimentation tank through a pipeline, a first water purification tank is arranged at the bottom of the first pre-sedimentation tank, and the lower portion of the side wall of the first pre-sedimentation tank is connected with a first sludge discharge pipe; the first sludge discharge pipe extends into the coal slime