Automatic dosing device for sewage treatment

The invention relates to the technical field of sewage treatment, and discloses an automatic dosing device for sewage treatment. Comprising a main body and a pretreatment unit arranged on the main body, through the arrangement of the pretreatment unit, when a medicament is prepared, the pretreatment unit prepares medicinal powder into high-concentration medicament slurry in a mixing tank in advance, so that when the medicament needs to be prepared, the medicament slurry in the mixing tank is directly conveyed into the medicament tank through a medicament feeding pump; according to requirements of sewage to be treated in the chemical tank, chemical slurry is rapidly diluted into a chemical with a proper concentration in proportion, so that the chemical preparation time is saved, then the prepared chemical is conveyed into the sewage pool by the chemical feeding pump, the liquid chemical is rapidly diffused in the sewage, and when the chemical powder is prepared into the chemical slurry, the chemical slurry is