Multilayer structure for sewage treatment

The utility model provides a multilayer structure (10) for sewage treatment. The device comprises a processing part (20) and a fixing part (30), wherein the treatment part (20) comprises a loose layer(21) containing aerobic microorganisms inside, a compact layer (23) containing anaerobic microorganisms inside and an intermediate layer (22) containing facultative microorganisms inside, the intermediate layer (22) is arranged between the loose layer (21) and the compact layer (23), and the treatment part (20) is connected with the fixed part (30). The utility model aims to provide a multi-layerstructure capable of efficiently degrading pollutants and improving the water body treatment effect. 本实用新型提供了一种用于污水处理的多层结构(10)，包括处理部分(20)和固定部分(30)，其中，处理部分(20)包括内部容纳有好氧微生物的疏松层(21)、内部容纳有厌氧微生物的紧密层(23)、以及内部容纳有兼性微生物的中间层(22)，中间层(22)设置在疏松层(21)和紧密层(23)之间，其中，处理部分(20)与固定部分(30)相连。本实用新型的目的在于提供一种能够高效降解污染物并提高水体治理效果的多层结构。