Rainwater Storage and Water Quality Treatment System using Multi-Stage Rainwater Storage Tank

摘要

The present invention relates to a system for rainwater storage and water quality treatment using a multi-stage rainwater storage tank which effectively removes pollutants included in rainwater in a process of collecting rainwater and easily cleans removed pollutants separately. According to the present invention, the system for rainwater storage and water quality treatment using a multi-stage rainwater storage tank comprises: an initial rainwater collection tank of a prescribed size buried in the ground in a prescribed depth to be installed to allow initial rainwater flowing along the ground surface to flow thereinto; a rainwater collection tank of a prescribed size installed on the ground to allow falling rainwater to enter the same; a settling tank of a prescribed size buried in the ground in a prescribed depth to be installed, wherein a prescribed amount water is supplied thereinto from the initial rainwater collection tank and the rainwater collection tank to be stored for a prescribed period of time; a detention tank which is buried in the ground in a prescribed depth to be installed, and receives water from the settling tank to detain the water for a prescribed period of time; and a storage tank which is installed on the ground, and receives a prescribed amount of water stored in the rainwater collection tank and the detention tank by a pump to store the water.