The filtering device comprises a box body, a filtering groove, a driving motor, a cleaning
brush and an electric push rod, the filtering groove is formed in the left side of the interior of the box body, a
precipitation groove is formed in the right side of the filtering groove, a collecting groove is formed in the right side of the
precipitation groove, and a first partition plate is fixedly mounted on the inner side wall of the box body between the filtering groove and the
precipitation groove; a second partition plate is fixedly mounted on the inner side wall of the box body between the precipitation tank and the collection tank, a first filter screen is vertically and movably mounted on the inner side of the collection tank, a second filter screen is arranged in the center of the side wall of the first partition plate, two limiting plates are fixedly mounted above the side wall of the precipitation tank, and a lead screw is fixedly mounted between the limiting plates; the surface of the lead screw is in threaded connection with a threaded block; according to the
sewage treatment device,
sewage is stirred and precipitated by arranging a cleaning
brush and a flocculating agent, so that the
sewage is filtered more thoroughly.