High-Rate dissolved air flotation with arch lateralHi-DAF

摘要

The present invention relates to an arc-shaped flotation separation device having a temporary settling structure, the object of which is an arc-shaped flotation separation device having a temporary settling structure that enables a high surface load rate to be more easily realized through the improvement of collection efficiency made in the flotation separation tank. In providing. The present invention for this purpose is a mixing tank that induces agglomeration of suspended substances or suspended substances in raw water, a floc formation tank that induces the formation of flocks while retaining raw water, a temporary settling basin for primary treatment of flocs through precipitation, and microbubble generation Dissolved air levitation separation consisting of a contact tank that induces the binding of microbubbles and flocks including a device, a flotation tank configured to remove the flocs floating to the surface and discharge the treated water from which the flocks have been removed, and a treated water tank that stores the treated water. In the apparatus, wherein the floating separation tank comprises a water collecting device, wherein the water collecting device comprises: two partition walls protruding from a bottom of the floating separation tank in a vertical direction and formed at predetermined intervals apart from each other to form a flow path through which treated water flows; And an arched cover including an inclined surface having a sloped structure and a plurality of inlet holes formed at the upper ends of the two partition walls, and the plurality of collections are parallel to the bottom of the floating separation tank. It provides an arcuate floating separation device having a temporary settling structure, characterized in that it is formed to be spaced apart from each other so that the lower space of the separation tank is divided into a collection area and a flux storage area.