| 摘要 |
The present invention relates to a pressure flotation tank for treatment of wastewater and, more specifically, to a pressure flotation tank for treatment of wastewater which increases a flotation removal efficiency of floated foreign substances having different size and properties among floated foreign substances, and naturally discharges sludge precipitated on the bottom of the pressure flotation tank. The pressure flotation tank of the present invention for solving the same problem comprises a body (100) purifying by mutually separating sludge and floated foreign substances included in wastewater by using buoyancy of fine bubbles while inducing precipitation; a scrape device (200) filtering floated foreign substances floated by buoyancy of the fine bubbles; a discharging means (300) installed on one side or both sides to the outside of the body (100), receiving purified water of the wastewater by multiple drain outer pipes (310) connected from the lower part of the body (100) and discharging the supplied purified water to the next stage; and a discharge hopper (400) installed on the lower end of the body (100) and naturally discharge the sludge precipitated on the lowest part of a floating space (140) to the outside. |
