The invention discloses an energy-saving purification device for
sewage treatment, wherein the energy-saving purification device comprises a purification shell; a rectangular groove is formed in the outer wall of the top of the purification shell, a storage shell is mounted on one side of the outer wall of the top of the purification shell, a feeding
pipe is inserted into one side of the outer wall of the top of the storage shell, and a liquid adding
pipe is inserted into one side of the outer wall of the top of the purification shell; one sides of the inner walls of the two ends of the purification shell are rotationally connected with a same rotating shaft. According to the energy-saving purification device for
sewage treatment, through the arrangement of a connecting spring and a rubberpad on a connecting block, scraping of a scraping plate can be smoother; through the arrangement of a sliding ring, the scraping plate can move back and forth on the purification shell,
sewage is prevented from entering the storage shell, and the waterproof effect is achieved; through arrangement of a motor, a lead rod and a sliding block, the sliding plate can be driven to move back and forth inthe purification shell, the arc-shaped scraping plate on the sliding plate can be driven to move, sewage at the bottom of the purification shell can be scraped, and deposition is avoided.