Wastewater desalting device

The utility model discloses a wastewater desalting device and relates to the technical field of wastewater treatment equipment. Comprising a desalting tank, treatment mechanisms are installed at the top of the desalting tank at equal intervals, each treatment mechanism comprises a U-shaped treatment box, water passing openings are formed in the bottoms of the two sides of each treatment box, and the two water passing openings form a U-shaped water channel in the treatment box; sponge implantation sheets are fixedly connected to the side wall of the box body at equal intervals from top to bottom and are arranged in the water channel. According to the utility model, the treatment mechanism is arranged in the desalting tank, so that high-salinity wastewater in the desalting tank can be subjected to biological treatment, the high-salinity wastewater can be decomposed by microorganisms attached to the sponge implantation layer when passing through the sponge implantation layer of the box body, salt in the wastewat