Abstract:
The present invention relates to a nonpoint pollution reducing facility having a separate grassed waterway, a separate grassed waterway structure for the nonpoint pollution reducing facility, and a nonpoint pollution reducing method using the nonpoint pollution reducing facility. More specifically, the said invention relates to a nonpoint pollution reducing facility having a separate grassed waterway including: a collecting well where leaked rainwater flowing on a road surface is collected; a guiding waterway guiding the leaked rainwater to the collecting well; the grassed waterway connected to the first end of one side of the collecting well, and receiving the initial leaked rainwater of the collected leaked rainwater; and an existing waterway connected to the second end of one side of the collecting well, and receiving the leaked rainwater of the leaked rainwater collected in the collecting well not received in the grassed waterway. The initially leaked rainwater is filtered by the grassed waterway and received in one side of the existing waterway.
Abstract:
The present invention relates to a bridge drainage facility capable of treating initial rainwater, an initial rainwater inducing method using the drainage facility, and a non-point pollution reducing facility and a method thereof comprising the drainage facility. More specifically, the present invention relates to a bridge drainage facility for inducing initial rainwater generated from a bridge on a river to a non-point pollution reducing facility, which comprises a vertical pipe in connection with a catch pit installed on one side of a road on the bridge; a longitudinal drainage pipe which is connected to both end parts of the vertical pipe respectively, is installed to a reducing facility installed on a ground part of an abutment, and induces the collected initial rainwater to the reducing facility; an overflowing pipe which is installed on one side of each of the vertical pipes, receives excessive water whose amount exceeds the capacity of the longitudinal drainage pipe except for the initial rainwater of the rainwater collected in the vertical pipe, and drains the excessive water to the river, wherein the overflowing pipe is shaped into a curved ��shape, and the length of the vertical pipe is 200 to 450 mm.
Abstract:
A noise absorbing apparatus of a bridge according to the present invention comprises: a case; a sound absorbing material; and a buffering unit provided on the upper side of the case. The case is made of a metal thin sheet material and has a hexahedral shape and a porous structure including multiple sound absorbing holes. The buffering unit is made of an elastic pad attached to the upper side of the case. The sound absorbing material is made of a foam resin material. The noise absorbing apparatus of a bridge according to the present invention is provided to promote a pleasant environment on the periphery of a bridge by using a flexible connection structure for significantly absorbing and reducing friction noise generated from the bridge and to reduce production costs due to the excellent cost effectiveness according to the high noise reduction effectiveness compared with relatively low production costs.
Abstract:
PURPOSE: A nonpoint pollutant reducing facility with a sand filtration tank and a nonpoint pollutant reducing method thereof are provided to reduce maintenance costs by reducing unnecessary filtration treatment, since the facility filters only first rainfall, and flows out the rest of the rainfall. CONSTITUTION: A nonpoint pollutant reducing facility (10) with a sand filtration tank comprises a flow rate distribution structure (100), a pre-treatment tank (200), and a sand filter tank (300). The flow rate distribution structure guides first outflow to a distribution water channel by being equipped with a guide projection (110). The sand filter tank is packed with a sand layer, filters the first out flow, and discharges the first outflow to an existing channel. Height adjustment concrete (350) on which a slope is formed is installed on the lower surface of the sand filter tank.
Abstract:
The present invention relates to a flow rate distributing construction using a water collection tank and an orifice, a flow rate distributing method, and a nonpoint pollutant reducing facility including the same and, more specifically, to a flow rate distributing construction using a water collection tank and an orifice which comprises: the water collection tank which is formed on one side of an inlet of an existing water channel and collects initial rainwater flowing into the existing water channel from discharged rainwater; a water distribution channel which is supplied with the initial rainwater collected in the water collection tank and discharges the collected initial rainwater to a nonpoint pollutant reducing facility; and the orifice which is provided between the water collection tank and the water distribution channel and controls the flow rate of the initial water supplied to the water distribution channel.
Abstract:
PURPOSE: A nonpoint pollutant reducing facility with a vegetation waterway and a nonpoint pollutant reducing method using the same are provided to improve filtration efficiency of initial rainfall and to reduce maintenance costs. CONSTITUTION: A nonpoint pollutant reducing facility (10) with a vegetation waterway comprises a pre-treatment tank (100), vegetation waterways (200-1,200-2), and an outlet structure (400). The vegetation water way forms an inclined surface from the front side and to the rear side, has vegetation which is plated on the lower side, and stores rainfall effluent inside. The outlet structure takes in the rainfall effluence which flows out of the vegetation waterway, and discharges the rainfall effluent into an existing waterway. A check dam (300) is prepared in between the vegetation waterway and the outlet structure, and provided with an inlet groove (310) on one side of the upper.
Abstract:
PURPOSE: A nonpoint pollutant reducing facility with a penetration ditch and a nonpoint pollutant reducing method thereof are provided to improve the filtration efficiency of first rainwater and to reduce maintenance costs by extending a replacement cycle of various consumable parts, since unnecessary filtration is not implemented. CONSTITUTION: A nonpoint pollutant reducing facility (10) with a penetration ditch comprises a flow rate distribution structure (100), a pre-treatment tank (200), and a penetration ditch (300). The flow rate distribution structure takes in the first outflow of rainfall effluent, which flows in an existing channel (20), as separate distribution water. The pre-treatment tank settles down pollutants which are contained in the first outflow. The penetration ditch is filled with aggregate inside, and makes the initial outflow to be contained in the aggregate and to pass through the aggregate.