Anti-clogging ascending vertical subsurface flow constructed wetland system and water quality purification method

The invention discloses an anti-clogging ascending vertical subsurface flow constructed wetland system and a water quality purification method. The system comprises a water distribution channel, a sludge collection tank, a water outlet tank and at least one wetland purification unit, each wetland purification unit comprises a purification area and a baffling sedimentation area, the purification area is arranged above the baffling sedimentation area, and the purification area is communicated with the water outlet tank through a water outlet pipe; the baffling sedimentation area is communicatedwith the water distribution channel through a water inlet pipe and is communicated with the sludge collection tank through a sludge discharge pipe, and an inclined baffling plate is arranged in the baffling sedimentation area. According to the invention, suspended solids in sewage can be removed and precipitated in the baffling precipitation area, so that the wetland blockage risk is effectively reduced, the carbon-nitrog