Pretreatment device for oily sludge on horizontal screw filter pressing type offshore platform

The invention discloses a pretreatment device for oily sludge on a horizontal screw filter pressing type offshore platform. The device comprises a medicament A storage box, a medicament B storage box,a dosing pump A, a dosing pump B, a pipeline mixer A, a pipeline mixer B, a feed pump and a medicament mixing reactor, wherein the medicament A storage box is connected with the dosing pump A; the medicament B storage box is connected with the dosing pump B; the dosing pump A and the dosing pump B are both connected with the pipeline mixer A, one end of the pipeline mixer B is connected with thepipeline mixer A, and the other end is connected with the medicament mixing reactor; an oily sludge feed inlet is formed in the inlet end of the feed pump, and the outlet end is connected with the medicament mixing reactor; a pressure filter storage tank, a filter cake storage tank and a pressure filter are arranged on the medicament mixing reactor, an outlet pump is arranged on the pressure filter storage tank, the outlet