The utility model discloses a modularized artificial
wetland structure which comprises a
wetland frame, a bottom surface impermeable layer is fixedly arranged on the inner wall of the
wetland frame, a gravel layer is arranged above the bottom surface impermeable layer, a
plant root system layer is arranged above the gravel layer, a filler layer is arranged between the
plant root system layer and the gravel layer, and the filler layer is arranged on the bottom surface impermeable layer. A microbial layer is embedded in the filler layer, the top end of the left side of the wetland frame is communicated with a water inlet
pipe, an
aeration system is arranged in the wetland frame, the bottom end of the right side of the wetland frame is communicated with a water outlet
pipe, and a water outlet valve is arranged on the water outlet
pipe. Compared with the prior art, the
sewage treatment device has the advantages that pollutants such as organic matters, nutritive salts, suspended matters and pathogens in
sewage can be effectively removed through the combined action of physical, chemical and biological processes; the
system mainly depends on the self-adjusting capacity of a natural ecological
system, the operation
energy consumption is low, and the construction and maintenance cost is relatively low.