CONFIGURATION SCREEN AS PART OF THE TUNNEL-TYPE PRIMARY STAGE RAINWATER MANAGEMENT SYSTEM AND CONSTRUCTION METHOD THEREOF

摘要

PURPOSE: An initial rainwater treatment device and a construction method thereof are provided to prevent contamination in the ground by filtering or decomposing contaminants and to enable convenient and rapid construction with simple and rapid construction. CONSTITUTION: An initial rainwater treatment device(100) comprising a screen unit of a tunnel shape comprises a contaminant filtration processing unit(110), a screen unit(120), a reservoir(130), and a collecting management unit(140). The contaminant filtration processing unit comprises a filtration block(111), a soil mineral(112), a fixing member, and a protection fabric(114) and is mounted on the bottom surface of the excavated ground. The screen unit comprises a screen block(121), a fixing member, and a nonwoven fabric(123). The screen unit connects the screen block to the upper surface of the contaminant filtration processing unit, and the upper surface of the contamination filtration processing unit is wrapped with the nonwoven fabric in order to filter trash included in the rainwater. The reservoir is connected to a rainwater discharge pipe, and the collecting management unit treats the trash filtered in the screen unit.