LID NON-POINT POLLUTION TREATMENT LID FACILITY USING GARDEN NEAR RIVER STREAM

摘要

The present invention provides a means to environmentally friendly treat a lot of non-point pollution included in road surface water of an upper structure of a bridge during the early stages of rainfall. The present invention provides a low impacted development (LID) non-point pollution treatment facility capable of using a garden such as wood chips, a plant cultivation pot, etc., to reduce the non-point pollution; and also prevents the garden such as wood chips, the plant cultivation pot, etc., from being damaged even if a river overflows during a flood. According to the present invention, the facility comprises: a sump to receive water to be treated flowing out from a drain; and a non-point pollution treatment tank receiving water to be treated from the sump, and having a non-point pollution filtration layer inside. The sump and the non-point pollution treatment tank surrounds a pier; both ends of the non-point pollution treatment tank reach both sidewalls of the sump; and a treatment tank inlet is formed on one or both sidewalls of the sump, thereby supplying water to be treated flowing to the sump to the non-point pollution treatment tank through the treatment tank inlet.