The invention discloses a modular vertical flow
constructed wetland sewage plant tail water treatment device which comprises a
wetland pool body, a
plant matrix module, matrix modules, an
aeration device, a water inlet groove, a water inlet
pipe, a water distribution
pipe, a
water storage pool and a water outlet
backflow device, a
pool body matrix filler is arranged in the
wetland pool body, and the water inlet
pipe is arranged at the lower end of one side of the
wetland pool body; the water inlet pipe is connected with the water inlet groove, the bottom of the wetland pool body is connected with the water distribution pipe, the water distribution pipe is connected with the water inlet pipe, the
water storage pool is arranged at the upper part of the other side of the wetland pool body, the water outlet
backflow device is arranged at the bottom of the
water storage pool, and a water outlet pipe is arranged on the water
storage pool; the
aeration device is arranged at the middle upper parts of the plurality of
layers of matrix module groups; the invention further relates to a
tail water treatment method utilizing the device, on one hand, the upward vertical flow constructed wetlandis adopted to properly relieve blockage, and the influence of blockage on a wetland
system is reduced by the method; on the other hand, the wetland substrate is modularized so that when the wetland isblocked, a new module or
matrix unit is convenient to use through replacement and the subsequent maintenance is convenient.