Tandem type multi-stage hydraulic drop integrated vertical flow constructed wetland equipment

Tandem type multi-stage hydraulic drop integrated vertical flow constructed wetland equipment is structured as a rectangular plate box, composed of a wetland equipment structure, wetland substrates and wetland plants, and formed by connecting two group of identical flow lines (normal temperature applicable flow line I and low temperature applicable flow line II) in parallel, and each group of the flow line is formed by 6 small cells and a water collecting tank; and the wetland substrates are divided into four layers, wherein the first layer, namely the upper most layer, is a clay layer, the second layer is a fine sand layer, the third layer is a coal slay and limestone mixed layer, and the fourth layer is a cobble layer. The equipment has an efficient sewage purification function.