Green roof system for matrix in-situ remediation

The invention provides a matrix in-situ remediation green roof system which comprises a vegetation layer, a matrix layer, an ultrasonic device I, a perforated plate and permeable geotextile layer, a water storage and drainage layer, an ultrasonic device II, a cathode chamber, an anode chamber, an ultrasonic generator and a peristaltic pump. The substrate layer is located below the vegetation layer and provides nutrients for the vegetation layer; the ultrasonic device I and the ultrasonic device II are respectively positioned below the substrate layer and the water storage and drainage layer and are both connected to the ultrasonic generator; the perforated plate and the permeable geotextile layer are positioned below the ultrasonic device I; the water storage and drainage layer is located below the perforated plate and the permeable geotextile layer, and a drainage valve I and a drainage valve II which are distributed up and down are sequentially arranged on one side of the water storage and drainage layer; t