Constructed wetland sewage treatment system

A constructed wetland sewage treatment system with ground and root filter, comprising:

• a rotting sedimentation tank with a particulate solids filter,
• a distribution well,
• an exposed reservoir with drainage of PVC pipes forming a dispersal drain and a collecting drain and insulation of PVC foil, filled with layers of gravel and sand, planted with hydrophilic vegetation whose root system penetration area is bigger than ⅓ of the filter bed height, and
• an inspection well at the reservoir outlet,
• wherein the filter bed is composed of three layers,
• the bottom layer (9) filled with coarse-grained oval gravel, in which the dispersal drain (5) is laid along the reservoir walls at ⅔ of the height connected with a single supply pipe (3) to the distribution well (2) and terminated with the ventilation chimney (11),
• the intermediate layer (8) filled with fine-grained oval gravel, and
• the top layer (7) filled with sand, in which the collecting drain (6), having an outlet to the inspection well (12), is laid horizontally in the shape of a coil at half of the height,
• where the level of the sewage in the rotting sedimentation tank (1), directed gravitationally to the reservoir (4) through the supply pipe (3), is located below the level of the collecting drain (6), and moreover, the dispersal drain (5) has transverse slots (13) executed on the side part of the drain pipe circumference.