Modular constructed wetland system and combination

The utility model relates to a modular constructed wetland system and a combination thereof, the modular constructed wetland system comprises a water inlet unit, a wetland unit and a control end, thewetland unit comprises a shell, a filter material room, a water outlet room, a filter material, a water distribution module and a water collection module, the control end, the filter material room andthe water outlet room are all arranged in the shell, and an aerator pipe is arranged at the bottom of the filter material; the water distribution module is communicated with the water inlet chamber,and the water collection module is communicated with the water outlet chamber; a water outlet of the water inlet chamber is connected with a water inlet manual valve, a water inlet flow meter and an electric valve, a water outlet of the water outlet chamber is sequentially connected with a water outlet manual valve, a water outlet flow meter and a water outlet electric valve, and the control end is connected with a water in