A PRIMARY STAGE RAINWATER MANAGEMENT DEVICE

摘要

The present invention relates to an early storm drainage device for storing relatively clean stormwater after excluding initial stormwater containing various floating matters and foreign matter, comprising: an stormwater inflow port through which stormwater is introduced; a sewage discharge port through which stormwater from the stormwater inflow port is discharged into sewage; A storage outlet through which the stormwater from the stormwater inlet is selectively introduced into the stormwater storeroom; A downstream portion of a relatively low weight and a relatively heavy weight portion are formed around the hinge axis and a downstream portion of the upstream portion and the downstream portion of the upstream portion are formed around the hinge axis, A squeeze type fine movement determining part having an outflow passage which is smaller than the stor- age inlet and is provided between the downstream parts; And a second compartment belonging to a downstream portion of the superior movement determining portion and a first compartment belonging to an upstream portion of the superior movement determining portion and a second compartment belonging to a downstream portion of the superior moving determining portion with respect to the partition, And the storage outlet is configured to be fluidly connected to the first compartment.