Apparatus for treatment of domestic wastewater

The invention discloses an apparatus for treating domestic sewage, which solves the problems of high implementation costs, large occupied area and non-ideal treatment effect of the current apparatus for treating domestic sewage. The apparatus includes a mixed reaction pond, a sedimentation pond and five suction filtration ponds respectively filled with different filter materials, and supernatant in the sedimentation pond is adsorbed and filtered continuously through the five suction filtration ponds by treatment methods of flocculation, sedimentation and adsorption filtration. The apparatus is matched with a compound coagulant composed of polyaluminium chloride sulfate and polyacrylamide as well as a domestic sewage treatment method, so phenolic hydroxyl contained in organics in sewage can better have the complex reaction with certain metal ions to form flocculate coagulation, and the apparatus has advantages of short process flow, low implementation costs of sewage treatment apparatus, small occupied area an