Green building roof wastewater primary treatment equipment

The invention discloses green building roof wastewater primary treatment equipment which comprises a recycling tank for recycling rainwater, the recycling tank comprises a tank body, a filter layer is assembled on the inner surface of the tank body, a water filter layer is laid on the upper surface of the filter layer, an eighth connecting pipe is assembled at the left end of the recycling tank, and a wastewater separator is assembled at the left end of the eighth connecting pipe, and a cleaning device is assembled at the bottom end of the wastewater separator. A roof after-rain wastewater primary treatment device utilizing automatic settling separation is provided by the invention, when the roof after-rain wastewater primary treatment device utilizing automatic settling separation is used, wastewater is conveyed through multiple sections of pipelines and stays in a fifth connecting pipe, and then the effect of multiple settling is achieved by utilizing gravity, sediment is isolated in the sewage pipe, purifi