OIL-WATER SEPARATION BATH

PROBLEM TO BE SOLVED: To enable an easy installation by a free change selection of an arrangement form in accordance with an installation condition of an installation place with a heavy machine such as a small crane upon construction, and to enable a necessary reservoir capacity sufficiently to be secured even when an embedding position of oily water mixture water introduction structure is located to be deep from a ground surface.SOLUTION: A separation tank body 1 installed in a state of embedding underground to be oil-water separated is configured by extendedly coupling for a free arrangement of a plurality of separation units 1A, 1B, 1C, 1D consisting of measure-boxlike concrete blocks, and by installing the separation units 1A, 1B, 1C, 1D with a lid 4 on each top exposed to a road surface to be detachable and attachable or single-opened. The separation units 1A, 1B, 1C, 1D enable oily water to flow out one after another in a direction of direct advance along an introduction direction or a direction orthogonal to the introduction direction by being coupled in a series state, an L-shaped state, and a parallel state on planes so that effluence holes 2 provided on top of opposite side walls or on top of two side walls orthogonal to each other may communicate with one another.SELECTED DRAWING: Figure 3 【課題】施工時において小型クレーン等の重機でもって設置場所の設置条件に合わせて配列形態を自在に変更選択して容易に設置することができ、また油水混合水の導入構造の埋設位置が地面から深い位置にあっても、必要な貯水容量を十分に確保できるものとする。【解決手段】油水分離すべく地中に埋設状態で設置する分離槽本体１を、桝状のコンクリートブロックからなる複数の分離槽ユニット１Ａ，１Ｂ，１Ｃ，１Ｄを配列自在に増設可能に連結し、分離槽ユニット１Ａ，１Ｂ，１Ｃ，１Ｄの各上部には蓋４を路面に露出した状態で脱着自在もしくは片開き自在に設置してなる。分離槽ユニット１Ａ，１Ｂ，１Ｃ，１Ｄは、相対向する側壁上部または互いに直交する２つの側壁上部に設けた流水用孔部２同士が連通するよう平面で直列状態、Ｌ字型状態、並列状態の結合により、導入方向に沿って直進する方向または導入方向に直交する方向で順次に油水を流出可能にする。【選択図】図３