Plant parterre type water purifying device

The invention belongs to the technical field of water purifying, and relates to a plant parterre type water purifying device. A plant parterre is built in a water body system, and water is purified through the purifying function of aquatic plants in the plant parterre. The plant parterre is of a tank or a column shape. Inner filler is contained in an inner cavity, seam walls are arranged on the periphery of the cavity, and a steel wire mesh is inserted in the top of the cavity. The water body system is a flowing water system, a floater is arranged on the top face of the water body system, a water body bottom is laid at the bottom of the water body system, a water inlet pipe valve is arranged on one side of the water body system, an inflow water distribution tank is disposed on the inner side of the water inlet pipe valve, the tank-shaped plant parterre is arranged at the corner of the other side of the water body system, and a drainage well is arranged between the tank-shaped plant parterre and the walls of the water body system; an outflow water overflow port is formed in the upper portion of the outer side of the tank-shaped plant parterre, and a drainage pipe or ditch is arranged on the side wall corresponding to the overflow water overflow port. The water purifying device is simple in overall structure, the building process is mature, pollutant purifying efficiency is high, manual operation is not needed, the use cycle is long, effectiveness is good, plants can not spread disorderly, maintenance and management are easy, popularization is facilitated, and the application environment is friendly.